BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Awards Ceremony and Closing DTSTART;VALUE=DATE-TIME:20211203T154500Z DTEND;VALUE=DATE-TIME:20211203T174500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1616@events.chpc.ac.za DESCRIPTION:Speakers: Happy Sithole ()\nPlease join the Awards Ceremony an d Closing Function of the 2021 CHPC National Conference.\n\nThe program in the session is as follows:\n\nWelcome Address: Dr Daniel Adams (DSI)\nSt udent Micro-Talks Awards - Dr Daniel Moeketsi (CHPC)\nDIRISA Student Datat hon Challenge - Ms Nobubele Shozi (DIRISA)\nCyber Security Competition - D r Renier van Heerden (SANReN)\nStudent Cluster Competition - Mr Nyameko Li sa (CHPC)\nVote of Thanks and Closing\n\nhttps://events.chpc.ac.za/event/9 8/contributions/1616/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1616/ END:VEVENT BEGIN:VEVENT SUMMARY:Trends and challenges in HPC from Dell Technologies DTSTART;VALUE=DATE-TIME:20211202T101500Z DTEND;VALUE=DATE-TIME:20211202T104500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1615@events.chpc.ac.za DESCRIPTION:Speakers: Kris Buggenhout ()\nThe talk will cover some of the trends in power\, cpu tech\, and the challenges we are being faced by our technology partners pushing the limits.\n\nhttps://events.chpc.ac.za/event /98/contributions/1615/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1615/ END:VEVENT BEGIN:VEVENT SUMMARY:Closing DTSTART;VALUE=DATE-TIME:20211202T124500Z DTEND;VALUE=DATE-TIME:20211202T130000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1614@events.chpc.ac.za DESCRIPTION:Closing\, next meeting in December 2022\n\nhttps://events.chpc .ac.za/event/98/contributions/1614/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1614/ END:VEVENT BEGIN:VEVENT SUMMARY:Road Map and Action Plan DTSTART;VALUE=DATE-TIME:20211202T121500Z DTEND;VALUE=DATE-TIME:20211202T124500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1613@events.chpc.ac.za DESCRIPTION:Road Map and Action Plan on Outcomes of the 11 th SADC Cyber-I nfrastructure Experts Meeting\n\nhttps://events.chpc.ac.za/event/98/contri butions/1613/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1613/ END:VEVENT BEGIN:VEVENT SUMMARY:Governance Structures DTSTART;VALUE=DATE-TIME:20211202T120000Z DTEND;VALUE=DATE-TIME:20211202T121500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1612@events.chpc.ac.za DESCRIPTION:Speakers: Anneline Morgan (SADC Secretariat)\nRecap on Governa nce Structures and update\n\n—SADC Secretariat\n\nhttps://events.chpc.ac .za/event/98/contributions/1612/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1612/ END:VEVENT BEGIN:VEVENT SUMMARY:Working Groups & Sub-Committees DTSTART;VALUE=DATE-TIME:20211202T113000Z DTEND;VALUE=DATE-TIME:20211202T120000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1611@events.chpc.ac.za DESCRIPTION:Update on Work Plans from Working Groups/Sub-Committees\n\nhtt ps://events.chpc.ac.za/event/98/contributions/1611/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1611/ END:VEVENT BEGIN:VEVENT SUMMARY:Reports and Updates from Member States DTSTART;VALUE=DATE-TIME:20211202T104500Z DTEND;VALUE=DATE-TIME:20211202T113000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1610@events.chpc.ac.za DESCRIPTION:Reports and Updates from Member States on programmes\, project s and infrastructures.\n\nhttps://events.chpc.ac.za/event/98/contributions /1610/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1610/ END:VEVENT BEGIN:VEVENT SUMMARY:Establishment NReNs DTSTART;VALUE=DATE-TIME:20211202T093000Z DTEND;VALUE=DATE-TIME:20211202T100000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1609@events.chpc.ac.za DESCRIPTION:Establishment NReNs\n\n—Ubuntu Net Alliance and NICIS\n\nhtt ps://events.chpc.ac.za/event/98/contributions/1609/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1609/ END:VEVENT BEGIN:VEVENT SUMMARY:Comments and Discussions DTSTART;VALUE=DATE-TIME:20211202T090000Z DTEND;VALUE=DATE-TIME:20211202T093000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1608@events.chpc.ac.za DESCRIPTION:https://events.chpc.ac.za/event/98/contributions/1608/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1608/ END:VEVENT BEGIN:VEVENT SUMMARY:Open and Distance Learning in SADC DTSTART;VALUE=DATE-TIME:20211202T084500Z DTEND;VALUE=DATE-TIME:20211202T090000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1607@events.chpc.ac.za DESCRIPTION:Status of Open and Distance Learning in SADC: implications of\ nCOVID-19 and future of digitation and the role of Cyber-\nInfrastructures .\n\n—Prof Martin Oosthuizen\, Southern African\nRegional University Ass ociations (TBC) \n\n—Dr Tshiamo Motshegwa\n\nhttps://events.chpc.ac.za/e vent/98/contributions/1607/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1607/ END:VEVENT BEGIN:VEVENT SUMMARY:Weather and Climate project DTSTART;VALUE=DATE-TIME:20211202T083000Z DTEND;VALUE=DATE-TIME:20211202T084500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1606@events.chpc.ac.za DESCRIPTION:Speakers: Mary-Jane Bopape (South African Weather Service)\nUp date and next steps on Weather and Climate project\n\n—Dr Mary-Jane\, Ch ief Scientist\, South African Weather Service\n\nhttps://events.chpc.ac.za /event/98/contributions/1606/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1606/ END:VEVENT BEGIN:VEVENT SUMMARY:UNECA Centre of Excellence on Digital Technologies DTSTART;VALUE=DATE-TIME:20211202T080000Z DTEND;VALUE=DATE-TIME:20211202T081500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1605@events.chpc.ac.za DESCRIPTION:United Nations Economic Commission for Africa (UNECA)\,\nCentr e of Excellence on Digital Technologies\n\n—Dr Mactar Seck\n\nhttps://ev ents.chpc.ac.za/event/98/contributions/1605/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1605/ END:VEVENT BEGIN:VEVENT SUMMARY:SADC Centre of Excellence on ICT DTSTART;VALUE=DATE-TIME:20211202T074500Z DTEND;VALUE=DATE-TIME:20211202T080000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1604@events.chpc.ac.za DESCRIPTION:Speakers: Anneline Morgan (SADC Secretariat)\nUpdate on establ ishment of SADC Centre of Excellence on ICT\n\n—SADC Secretariat\n\nhttp s://events.chpc.ac.za/event/98/contributions/1604/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1604/ END:VEVENT BEGIN:VEVENT SUMMARY:SADC Cyber-Infrastructure Framework DTSTART;VALUE=DATE-TIME:20211202T072000Z DTEND;VALUE=DATE-TIME:20211202T074500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1603@events.chpc.ac.za DESCRIPTION:Speakers: Happy Sithole (CHPC)\nProgress report on implementat ion of SADC Cyber-Infrastructure Framework\n—Dr Happy Sithole\, South Af rica\n\nhttps://events.chpc.ac.za/event/98/contributions/1603/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1603/ END:VEVENT BEGIN:VEVENT SUMMARY:SADC Secretariat DTSTART;VALUE=DATE-TIME:20211202T065500Z DTEND;VALUE=DATE-TIME:20211202T072000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1602@events.chpc.ac.za DESCRIPTION:Speakers: Anneline Morgan (SADC Secretariat)\nMs Anneline Morg an\, SADC Secretariat:\n\n• Record of the 10th SADC Cyber-Infrastructure Technical\nExperts meeting held in December 2020 virtual\n\n• Backgroun d\, expectations and outcomes of meeting\n\nhttps://events.chpc.ac.za/even t/98/contributions/1602/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1602/ END:VEVENT BEGIN:VEVENT SUMMARY:Welcome and Opening DTSTART;VALUE=DATE-TIME:20211202T063000Z DTEND;VALUE=DATE-TIME:20211202T065500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1601@events.chpc.ac.za DESCRIPTION:Speakers: Chomora Mikeka (Malawi)\nWelcome and Opening:\n\n• Welcome remarks SADC Chair\, Prof Chomora Mikeka\,\nMalawi\n\n• Remarks by Ms Anneline Morgan\, SADC Secretariat\n\nhttps://events.chpc.ac.za/eve nt/98/contributions/1601/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1601/ END:VEVENT BEGIN:VEVENT SUMMARY:The Lost Packet Warehousing Service DTSTART;VALUE=DATE-TIME:20211202T104500Z DTEND;VALUE=DATE-TIME:20211202T111500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1600@events.chpc.ac.za DESCRIPTION:Speakers: Heloise Meyer (CSIR)\nThe Lost Packet Warehousing Se rvice (LPWS) is a technological solution with a South African focus to ena ble the passive but continuous collection of cyber data. The purpose of LP WS is to function as the primary source of cyber data\, which will support the identification and detection of emerging trends and cyberattacks. LPW S aims to monitor threats at a national\, organisation and private level u sing a collection of deception technologies. Products offered by LPWS incl ude raw data sets\, available for use by universities\, cyber threat repor ts\, as well as the Honey Net Kit - a miniaturized but deployable prototyp e of LPWS.\n\nhttps://events.chpc.ac.za/event/98/contributions/1600/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1600/ END:VEVENT BEGIN:VEVENT SUMMARY:Update on High Performance Computing at HPE DTSTART;VALUE=DATE-TIME:20211202T093000Z DTEND;VALUE=DATE-TIME:20211202T100000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1599@events.chpc.ac.za DESCRIPTION:Speakers: Duncan Roweth ()\nThis talk will provide an update o n the way HPE is working with customers to provide technology and solution s to address the most challenging problems in high performance computing. It will include the need to make use of heterogeneous computing elements\, and how AI can be combined with HPC to enable end users to be more produc tive\n\nhttps://events.chpc.ac.za/event/98/contributions/1599/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1599/ END:VEVENT BEGIN:VEVENT SUMMARY:Vendor Crossfire: Mr Addison Snell and Mr Dan Olds DTSTART;VALUE=DATE-TIME:20211201T161500Z DTEND;VALUE=DATE-TIME:20211201T171500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1545@events.chpc.ac.za DESCRIPTION:Speakers: Dan Olds (OrionX)\, Addison Snell (Intersect360 Rese arch)\nThe Vendor Crossfire Session is focused on giving the audience the opportunity to learn more about the products and offerings of the conferen ce sponsors in a fun and engaging session.\n\nThe session will be facilita ted by Addison Snell and Dan Olds from Intersect360 and will also involve participation of the audience to e.g. vote on answers to questions posed t o vendor representatives.\n\nShort introductory presentations will be made by each vendor representative followed by a questions session. The follo wing representatives have been confirmed:\n\nDr Jean-Laurent Philippe (Int el)\nMr Yossi Avni (Nvidia)\nMr Olivier Blondel (HPE)\nMr Kamel Beyk (Dell Technologies)\nMr Ernst Burger (Altair)\n\nhttps://events.chpc.ac.za/even t/98/contributions/1545/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1545/ END:VEVENT BEGIN:VEVENT SUMMARY:Monitoring private cloud control plane security with Wazuh DTSTART;VALUE=DATE-TIME:20211202T132500Z DTEND;VALUE=DATE-TIME:20211202T135000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1598@events.chpc.ac.za DESCRIPTION:Speakers: Stig Telfer (StackHPC Ltd)\nhttps://events.chpc.ac.z a/event/98/contributions/1598/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1598/ END:VEVENT BEGIN:VEVENT SUMMARY:A machine learning-unlearning model for big data privacy protectio n DTSTART;VALUE=DATE-TIME:20211202T130000Z DTEND;VALUE=DATE-TIME:20211202T132500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1596@events.chpc.ac.za DESCRIPTION:Speakers: Themba Ngobeni (CSG International)\nhttps://events.c hpc.ac.za/event/98/contributions/1596/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1596/ END:VEVENT BEGIN:VEVENT SUMMARY:Quantum machine learning and mobile device security DTSTART;VALUE=DATE-TIME:20211202T122000Z DTEND;VALUE=DATE-TIME:20211202T124500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1595@events.chpc.ac.za DESCRIPTION:Speakers: Tawanda Chowuraya (Cape Peninsula University of Tech nology)\nhttps://events.chpc.ac.za/event/98/contributions/1595/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1595/ END:VEVENT BEGIN:VEVENT SUMMARY:More Security for High Performance Computing with Intel in the New Era of Supercomputing DTSTART;VALUE=DATE-TIME:20211201T101500Z DTEND;VALUE=DATE-TIME:20211201T111500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1594@events.chpc.ac.za DESCRIPTION:Speakers: Jean-Laurent Philippe (Intel)\nHPC users ask more of their HPC systems than ever before and they rely on Intel security innova tions as the trusted foundation for high performance computing\, protectin g applications and data. Intel deliver technology that improves foundation al security\, data and workload protection\, and software reliability\, us ing new hardware-based controls for cloud and enterprise environments\, in cluding the Intel® Software Guard Extensions (Intel® SGX). High Performa nce Computing is the foundation of research and discovery. Let’s look at Intel HPC strategy and new innovations including the latest Intel® Xeon ® Scalable processors\, data center GPUs and powerful software tools. Tog ether\, let's accelerate the next era of innovation in HPC.\n\nhttps://eve nts.chpc.ac.za/event/98/contributions/1594/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1594/ END:VEVENT BEGIN:VEVENT SUMMARY:Ransomware: An unwanted Christmas present DTSTART;VALUE=DATE-TIME:20211202T115500Z DTEND;VALUE=DATE-TIME:20211202T122000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1593@events.chpc.ac.za DESCRIPTION:Speakers: Taryn Woods (Dark Trace)\nhttps://events.chpc.ac.za/ event/98/contributions/1593/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1593/ END:VEVENT BEGIN:VEVENT SUMMARY:Migration towards single healthy trackable and access digital iden tity DTSTART;VALUE=DATE-TIME:20211202T113000Z DTEND;VALUE=DATE-TIME:20211202T115500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1592@events.chpc.ac.za DESCRIPTION:Speakers: Charles Sello Kungwane (City of Johannesburg)\nhttps ://events.chpc.ac.za/event/98/contributions/1592/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1592/ END:VEVENT BEGIN:VEVENT SUMMARY:Globally Federated Supercomputing: InfiniCortex and other explorat ions DTSTART;VALUE=DATE-TIME:20211201T091500Z DTEND;VALUE=DATE-TIME:20211201T100000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1591@events.chpc.ac.za DESCRIPTION:Speakers: Marek Michalewicz (Interdisciplinary Centre for Math ematical and Computational Modelling\, University of Warsaw)\nScientific e ndeavors of unprecedented scale\, such as Square Kilometre Array\, Large\n Synoptic Survey Telescope\, Large Hadron Collider\, will be or are already generating\ncolossal amounts of data. Furthermore\, in a fundamental mann er\, OMICS and AI\ndepend on the availability and easy access to big data. This forces us to rethink the\nhierarchy and relative importance of "comp ute - store - transport" elements. All these\ncomponents must be considere d on equal footing\, integrated and architected as almost\norganic\, coher ent and coalesced federation.\n\nIn this talk I will chronicle ***InfiniCo rtex*** project run between 2014-2016.\nSubsequently the U.S. DoE devised a concept of Superfacilities\; a Global Research\nPlatform was established to facilitate big scientific data collaborations at the global\nscale\; a nd in Europe EuroHPC Joint Undertaking is funding three pre-exascale\ncomp uting infrastructures\, each serving communities of users in many countrie s. All\nthis requires the tight integration of compute-store-transport and access components.\nWe are witnessing the emergence of Federated Supercom puting.\n\n***InfiniCortex*** was a supercomputer spanning the entire glob e. It combined\nsupercomputing and storage resources located in Asia\, Aus tralia\, USA and Europe into\none concurrent\, seamless\, global electroni c brain. Over the three years of project\nduration A*CRC in Singapore toge ther with dozens of partners around the world\nimplemented:\ni) ring-aroun d-the-world connectivity with most links at 100Gbps using exclusively\nInf iniBand transport\, allowing almost 100% efficient\, lossless and encrypte d\ncommunication between all processors\, everywhere (RDMA) and InfiniBand \nrouting\nii) InfiniCloud: “designer choice” HPC Cloud instances with no limits on size of\ncomputing resources\, spanning four continents\niii ) InfiniCortex enabled applications in critical areas of science and techn ology.\n\nI will also report on continuation of this work at ICM\, Univers ity of Warsaw with\npartners around the globe to transmit data between Eur ope and Australia\, and Europe\nand Singapore\, on establishing networks w ith efficient Data Trensfer Nodes (DTNs)\,\ninter-city or inter-continenta l connected infrastructure enabling high-priority\ncomputing\, distributed supercomputing\, collaboration\, and scientific research.\n\nhttps://even ts.chpc.ac.za/event/98/contributions/1591/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1591/ END:VEVENT BEGIN:VEVENT SUMMARY:Modelling & Simulation Decadal Plan: Dr Jeffrey Baloyi\, CSIR DTSTART;VALUE=DATE-TIME:20211201T090500Z DTEND;VALUE=DATE-TIME:20211201T091500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1589@events.chpc.ac.za DESCRIPTION:https://events.chpc.ac.za/event/98/contributions/1589/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1589/ END:VEVENT BEGIN:VEVENT SUMMARY:Welcome: Dr Happy Sithole\, NICIS DTSTART;VALUE=DATE-TIME:20211201T085000Z DTEND;VALUE=DATE-TIME:20211201T090500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1588@events.chpc.ac.za DESCRIPTION:https://events.chpc.ac.za/event/98/contributions/1588/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1588/ END:VEVENT BEGIN:VEVENT SUMMARY:Welcome: Prof Yonah Seleti\, DSI DTSTART;VALUE=DATE-TIME:20211201T083500Z DTEND;VALUE=DATE-TIME:20211201T085000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1587@events.chpc.ac.za DESCRIPTION:https://events.chpc.ac.za/event/98/contributions/1587/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1587/ END:VEVENT BEGIN:VEVENT SUMMARY:Opening: Chair: Dr Werner Janse van Rensburg\, CHPC DTSTART;VALUE=DATE-TIME:20211201T083000Z DTEND;VALUE=DATE-TIME:20211201T083500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1586@events.chpc.ac.za DESCRIPTION:https://events.chpc.ac.za/event/98/contributions/1586/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1586/ END:VEVENT BEGIN:VEVENT SUMMARY:Chameleon: Taking Science from Cloud to Edge DTSTART;VALUE=DATE-TIME:20211202T143000Z DTEND;VALUE=DATE-TIME:20211202T153000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1585@events.chpc.ac.za DESCRIPTION:Speakers: Kate Keahey (ANL)\nThe increasing popularity of IoT devices allows us to communicate better\, interact better\, and ultimately build a new type of a scientific instrument that will allow us to explore our environment in ways that we could only dream about just a few years a go. This disruptive opportunity raises a new set of challenges: how should we manage the massive amounts of data and network traffic such instrument s will eventually produce? What types of environments will be most suited to developing their full potential? What new security problems will arise? And finally: what are the best ways of leveraging intelligent edge to cre ate new types of applications? \n\nIn a research area that creates a new d eployment structure\, such questions are too often approached only theoret ically for lack of a realistic testbed — a scientific instrument that ke eps pace with the emergent requirements of science and allows researchers to deploy\, measure\, and analyze relevant scientific hypotheses. To help create such instrument\, the NSF-funded Chameleon testbed\, originally cre ated to provide a platform for datacenter research\, has now been extended to support experiments from cloud to edge. \n\nIn this talk\, I will firs t describe Chameleon — a scientific instrument for computer science syst ems research\, originally created to allow exploration of research topics in cloud computing such as virtualization\, programmable networking\, or p ower management -- as well as its recent extension to support experimenta tion at the edge. I will describe the testbed capabilities and operational practices required to provide a platform for experimentation in the edge to cloud continuum\, and give examples of edge to cloud research and educa tion projects our users created. I will also describe tools and services t hat Chameleon provides to improve experimental methodology and reproducibi lity of experiments in this environment\, and illustrate how a common expe rimentation platform can enhance sharing and scientific productivity.\n\nh ttps://events.chpc.ac.za/event/98/contributions/1585/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1585/ END:VEVENT BEGIN:VEVENT SUMMARY:Developments in African Cyber-infrastructure to Support Open Scien ce – SmartBotswana Initiative and A Case For A Botswana Open Science Pla tform DTSTART;VALUE=DATE-TIME:20211203T134000Z DTEND;VALUE=DATE-TIME:20211203T140500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1583@events.chpc.ac.za DESCRIPTION:Speakers: Tshiamo Motshegwa (University Of Botswana)\nhttps:// events.chpc.ac.za/event/98/contributions/1583/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1583/ END:VEVENT BEGIN:VEVENT SUMMARY:Distributed Machine Learning or Federated Learning for Big Data DTSTART;VALUE=DATE-TIME:20211203T131500Z DTEND;VALUE=DATE-TIME:20211203T134000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1582@events.chpc.ac.za DESCRIPTION:Speakers: Nelishia Pillay (University of Pretoria)\nhttps://ev ents.chpc.ac.za/event/98/contributions/1582/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1582/ END:VEVENT BEGIN:VEVENT SUMMARY:Online Education: Surprises and Insights DTSTART;VALUE=DATE-TIME:20211203T131500Z DTEND;VALUE=DATE-TIME:20211203T141500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1584@events.chpc.ac.za DESCRIPTION:Speakers: Bryan Johnston (CHPC)\, Verena Ras (University of Ca pe Town \; H3ABioNet)\n**BoF: Online Education: Surprises and Insights** \ n\n\nFor some\, the move to online education and training took place many years ago\, while for others\, the need to move online was thrust upon the m due to the global pandemic. No matter what the circumstances or motivati ons for the move\, the community of online educators and trainers have all encountered challenges\, experienced surprises\, and gained insights from their journeys into the online education space. After migrating\, some ha ve met with varying levels of success\, while others still struggle to est ablish a reliable and effective online programme. \n\nThis panel session w ill discuss some of the challenges in moving to an online education platfo rm. We will hear personal experiences from established online trainers fro m various regions about how they have implemented their programmes\, what surprises they experienced along the way\, and what insights they can shar e with others trying to move to an online education model. \n\nSpeakers: \ n\n - **David Joyner** (Georgia Tech)\; \n - **Ben Morse** (EPCC)\; \n - **Verena Ras** (CBIO)\n\nModerator: \n\n - **Bryan Johnston** (CHPC)\n\nh ttps://events.chpc.ac.za/event/98/contributions/1584/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1584/ END:VEVENT BEGIN:VEVENT SUMMARY:Practical Illustrations of Data-Driven Solutions for Societal Chal lenges DTSTART;VALUE=DATE-TIME:20211203T101500Z DTEND;VALUE=DATE-TIME:20211203T104000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1580@events.chpc.ac.za DESCRIPTION:Speakers: Kassim Mwitondi (Sheffield Hallam University)\nhttps ://events.chpc.ac.za/event/98/contributions/1580/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1580/ END:VEVENT BEGIN:VEVENT SUMMARY:Life and Times of the Ilifu OpenStack Cluster DTSTART;VALUE=DATE-TIME:20211203T120000Z DTEND;VALUE=DATE-TIME:20211203T122500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1581@events.chpc.ac.za DESCRIPTION:Speakers: Rob Simmonds (University of Cape Town)\nhttps://even ts.chpc.ac.za/event/98/contributions/1581/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1581/ END:VEVENT BEGIN:VEVENT SUMMARY:Meeting New Challenges and Seizing New Opportunities using Researc h Data DTSTART;VALUE=DATE-TIME:20211203T122500Z DTEND;VALUE=DATE-TIME:20211203T125000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1552@events.chpc.ac.za DESCRIPTION:Speakers: Hanlie Smuts (University of Pretoria)\nhttps://event s.chpc.ac.za/event/98/contributions/1552/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1552/ END:VEVENT BEGIN:VEVENT SUMMARY:Building local communities of practice DTSTART;VALUE=DATE-TIME:20211203T110500Z DTEND;VALUE=DATE-TIME:20211203T113000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1554@events.chpc.ac.za DESCRIPTION:Speakers: Niklas Zimmer (University of Cape Town)\nhttps://eve nts.chpc.ac.za/event/98/contributions/1554/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1554/ END:VEVENT BEGIN:VEVENT SUMMARY:Research Data Services – The Maturation Talk DTSTART;VALUE=DATE-TIME:20211203T104000Z DTEND;VALUE=DATE-TIME:20211203T110500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1553@events.chpc.ac.za DESCRIPTION:Speakers: Isak van der Walt (University of Pretoria)\nhttps:// events.chpc.ac.za/event/98/contributions/1553/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1553/ END:VEVENT BEGIN:VEVENT SUMMARY:The Internet of Things and Information Warfare DTSTART;VALUE=DATE-TIME:20211202T101500Z DTEND;VALUE=DATE-TIME:20211202T104500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1558@events.chpc.ac.za DESCRIPTION:Speakers: Brett van Niekerk (University of KwaZulu-Natal)\nWit h the advent of the Fourth Industrial Revolution\, there is a rise of conn ected ‘smart’ devices called the Internet of things (IoT). This has po ssible implications for the network architecture and exhibits an increase in the variety and volume of data that needs to be catered for on networks . In addition\, IoT has been seen to result in a broader attack surface fo r information warfare as well as the utilisation of compromised IoT device s to conduct attacks that have disrupted large networks. The presentation will provide an overview of IoT-related security incidents and focus on th e security considerations of IoT\, as well as information warfare attacks enabled by IoT.\n\nhttps://events.chpc.ac.za/event/98/contributions/1558/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1558/ END:VEVENT BEGIN:VEVENT SUMMARY:HPC Cloud Use Cases and Best Practices DTSTART;VALUE=DATE-TIME:20211202T104500Z DTEND;VALUE=DATE-TIME:20211202T111500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1576@events.chpc.ac.za DESCRIPTION:Speakers: Fritz Ferstl (Altair)\nThis talk will discuss the cu rrent state-of-the-art of HPC cloud usage in various application sectors a nd will look at best practices and common pitfalls when adopting cloud inf rastructures for HPC. The focus will be on non-trivial use cases. Concrete examples of existing cloud deployments will showcase what is feasible and advisable today. The talk will also give a perspective on trends and futu re developments.\n\nhttps://events.chpc.ac.za/event/98/contributions/1576/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1576/ END:VEVENT BEGIN:VEVENT SUMMARY:Computational chemistry and its application in pharmacy and drug d evelopment DTSTART;VALUE=DATE-TIME:20211201T123000Z DTEND;VALUE=DATE-TIME:20211201T130000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1575@events.chpc.ac.za DESCRIPTION:Speakers: Ponnadurai Ramasami ()\n**Summary:** \nComputational chemistry involves the use of theoretical methods and computers to solve chemistry and interdisciplinary problems. It has progressed with the explo sive increase of computational power and availability of user-friendly sof tware. Computational chemistry is also benefiting from the boom of the ICT sector.\nThis presentation gives an overview of the fundamentals of compu tational chemistry methods and their applications in pharmacy and drug dev elopment.\n\n**Objectives:** \n1. Collaboration with Computational Chemist ry Group\, Department of Chemistry\, Faculty of Science\, University of Ma uritius.\n2. Increase awareness of faculty and students about the importan ce of the computational chemistry and its use in all fields of science\, e specially in pharmacy and health sciences.\n3. Possibility to do joint gra duation project with Prof Ramasami.\n\nhttps://events.chpc.ac.za/event/98/ contributions/1575/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1575/ END:VEVENT BEGIN:VEVENT SUMMARY:Leveraging New Interfaces to Low-Latency Storage DTSTART;VALUE=DATE-TIME:20211202T134500Z DTEND;VALUE=DATE-TIME:20211202T141500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1486@events.chpc.ac.za DESCRIPTION:Speakers: Luke Logan (Illinois Institute of Technology)\nThe g ap between I/O performance and memory performance is decreasing due to the emergence of fast\, low-latency storage such as NVMe and persistent memor y (PMEM). However\, traditional interfaces to storage (e.g.\, POSIX) do no t fully leverage these new device characteristics\, resulting in significa nt performance degradation. New interfaces to storage must be utilized in order to achieve the full potential of these low-latency technologies. To demonstrate this\, we present pMEMCPY: a simple\, lightweight\, and portab le I/O library for storing data in persistent memory. As opposed to tradit ional storage APIs\, pMEMCPY uses memory mapping. We demonstrate that our approach is up to 2x faster than alternative interfaces to storage under r eal workloads.\n\nhttps://events.chpc.ac.za/event/98/contributions/1486/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1486/ END:VEVENT BEGIN:VEVENT SUMMARY:SCTuner— an autotuner for I/O library DTSTART;VALUE=DATE-TIME:20211202T131500Z DTEND;VALUE=DATE-TIME:20211202T134500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1488@events.chpc.ac.za DESCRIPTION:Speakers: Bing Xie (ORNL)\nIn HPC\, typical scientific codes often manage a massive amount of data utilizing I/O middle ware libraries\, such as HDF5\, PnetCDF\, ADIOS\, etc. These libraries support a variety of data structures and allow end users to optimize I/O p erformance by tuning configurations across multiple layers of the HPC I/O middleware stack. This work proposes SCTuner\, an autotuner built within t he I/O library itself to tune the configurations across I/O layers dynamic ally and agilely at application runtime. To this end\, we introduce an I/O statistical benchmarking method to profile the behaviors of individ ual supercomputer I/O subsystems with varied configurations across I/O lay ers. Next\, we use the benchmarking results as the built-in knowledge in S CTuner\, implement an I/O pattern extractor\, and plan to implement an on line performance tuner as the runtime of SCTuner. We conducted a benchmark ing analysis on the Summit supercomputer and its GPFS file system Alpine. The preliminary results show that our method can effectively extract the c onsistent I/O behaviors of the target system under production load\, building the base for I/O autotuning at application runt ime.\n\nhttps://events.chpc.ac.za/event/98/contributions/1488/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1488/ END:VEVENT BEGIN:VEVENT SUMMARY:Evaluating and Characterizing Parallel I/O in HPC Systems: Best Pr actices and Future Directions DTSTART;VALUE=DATE-TIME:20211202T123000Z DTEND;VALUE=DATE-TIME:20211202T130000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1484@events.chpc.ac.za DESCRIPTION:Speakers: Sarah Neuwirth (Goethe-University Frankfurt)\nAs a recent I/O behaviour analysis [1] has revealed\, High Performance C omputing(HPC) storage systems may no longer be dominated by write I/O – challenging the long- and widely-held belief that HPC workloads are write-intensive. HPC applications are evolving to include not only tradit ional scale-up modelling and simulation bulk-synchronous workloads but als o scale-out workloads [2] like artificial intelligence (AI)\,advanc ed and big data analytics [3]\, machine learning\, deep learning [4]\, and complex multi-step workflows [5]–[7]. Exascale workflow s are projected to include multiple different components from both scale-up and scale-out communities operating together to drive scient ific discovery and innovation.With the often conflicting design choices be tween optimizing for write-intensive vs. read-intensive workloads\, having flexible I/O systems will be crucial to support these emer ging hybrid workloads. Another performance aspect is the intensifyi ng complexity of parallel file and storage systems in large-scale cluster environments. Storage system designs are advancing beyond the traditional two-tiered file system and archive model by introd ucing new tiers of temporary\,fast storage close to the computing resources with distinctly different performance characteristics. The c hanging landscape of emerging hybrid HPC workloads along with the ever increasing gap between the compute and storage performance cap abilities reinforce the need for an in-depth understanding of extre me-scale parallel I/O and for rethinking existing data storage and managem ent evaluation techniques and strategies.In this talk\, an overview a nd taxonomy [8] of the current state-of-the-art research on large-sca le parallel I/O evaluation and characterization techniques in the context of HPC systems is presented. Traditionally\, the process of understanding large-scale I/O behaviour and performance for specific applications or storage systems is performed iteratively and empirically in a closed l oop fashion\, as outlined in Figure 1\, and consists of three main phases: (1) Measurements and Statistics Collection\, (2) Modelling and Prediction \, and (3) Simulation. The overview and broad knowledge base provided by t his talk is invaluable to the whole scientific community\, as applications often observe poor performance due to bottlenecks in the parallel I/O and storage system. In addition\, this talk aims to identify future re-search challenges with regard to emerging exascale computing systems an d more complex hybrid HPC workloads.\n\nhttps://events.chpc.ac.za/event/98 /contributions/1484/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1484/ END:VEVENT BEGIN:VEVENT SUMMARY:Virtual Log-Structured Storage for High-Performance Streaming DTSTART;VALUE=DATE-TIME:20211202T120000Z DTEND;VALUE=DATE-TIME:20211202T123000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1478@events.chpc.ac.za DESCRIPTION:Speakers: Ovidiu-Cristian Marcu (University of Luxembourg)\nOv er the past decade\, given the higher number of data sources (e.g.\, Cloud applications\, Internet of things) and critical business demands\, Big Da ta transitioned from batch-oriented to real-time analytics. Stream storage systems\, such as Apache Kafka\, are well known for their increasing role in real-time Big Data analytics. For scalable stream data ingestion and p rocessing\, they logically split a data stream topic into multiple partiti ons. Stream storage systems keep multiple data stream copies to protect ag ainst data loss while implementing a stream partition as a replicated log. This architectural choice enables simplified development while trading cl uster size with performance and the number of streams optimally managed. T his paper introduces a shared virtual log-structured storage approach for improving the cluster throughput when multiple producers and consumers wri te and consume in parallel data streams. Stream partitions are associated with shared replicated virtual logs transparently to the user\, effectivel y separating the implementation of stream partitioning (and data ordering) from data replication (and durability). We implement the virtual log tech nique in the KerA stream storage system. When comparing with Apache Kafka\ , KerA improves the cluster ingestion throughput (for replication factor t hree) by up to 4x when multiple producers write over hundreds of data stre ams. Furthermore\, we present the initial results of running experiments w ith KerA over Infiniband and Singularity in an HPC cluster.\n\nhttps://eve nts.chpc.ac.za/event/98/contributions/1478/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1478/ END:VEVENT BEGIN:VEVENT SUMMARY:The value of Higher Performance Computing for decision-making in t he National Policy Data Observatory during the COVID-19 pandemic. DTSTART;VALUE=DATE-TIME:20211202T154500Z DTEND;VALUE=DATE-TIME:20211202T164500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1573@events.chpc.ac.za DESCRIPTION:Speakers: Jabu Mtsweni (CSIR)\, Ashwell Jenneker (Industry)\nT BC\n\nhttps://events.chpc.ac.za/event/98/contributions/1573/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1573/ END:VEVENT BEGIN:VEVENT SUMMARY:Infectious disease susceptibility in the context of African geneti c diversity DTSTART;VALUE=DATE-TIME:20211202T120000Z DTEND;VALUE=DATE-TIME:20211202T123000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1572@events.chpc.ac.za DESCRIPTION:Speakers: Marlo Möller (Stellenbosch University)\nDuring late 2019\, the world saw the emergence of the Coronavirus Disease 2019 (COVID -19) pandemic caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). To date\, more than 242 million infections have been obser ved in 223 countries/territories across the globe\, with a staggering 4.9 million individuals losing their lives to COVID-19. South Africa has not r emained unscathed by the pandemic\, having more than 2.9 million COVID-19 cases and over 88 000 COVID-19 deaths. Significant inter-individual variab ility has been observed in host responses to COVID-19\, with host genetic factors being proposed as a contributor to SARS-CoV-2 susceptibility and d isease severity. This observation echoes that of the ancient disease of tu berculosis (TB)\, still a chief cause of death in many areas\, with Africa home to most high burden countries. To find the genetic underpinnings of TB in South Africa\, we have studied the complete susceptibility spectrum\ , from individuals with rare susceptibility mutations to common genetic va riants in the general population. We used association studies\, genome wid e linkage studies and genome-wide association studies and incorporated pop ulation genetics and computational analyses to identify genes and loci tha t inform the variation in disease outcome between individuals. We are esta blishing a large COVID-19 cohort representative of South African populatio ns\, including individuals that have tested both positive and negative for SARS-CoV-2 to elucidate the underlying genetic markers that are associate d with both infection and severe/critical COVID-19. This includes whole ge nome sequencing of younger individuals diagnosed with a rare Multisystem I nflammatory Syndrome in Children (MIS-C) that is directly related to a pre vious SARS-CoV-2 infection\, which is often very mild or asymptomatic in c hildren. Our findings could assist with the management of infectious disea ses in resource-poor African settings\, where an overburdened healthcare s ystem in the past has not been able to accommodate infection surges.\n\nht tps://events.chpc.ac.za/event/98/contributions/1572/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1572/ END:VEVENT BEGIN:VEVENT SUMMARY:BoF: NVIDIA Deep Learning Institute – bringing AI and GPU-accel erated computing to Academic Institutions DTSTART;VALUE=DATE-TIME:20211203T120000Z DTEND;VALUE=DATE-TIME:20211203T130000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1571@events.chpc.ac.za DESCRIPTION:Speakers: Kevin McFall (NVIDIA)\nBirds-of-a-Feather (BoF)\n\nT he NVIDIA Deep Learning Institute (DLI) offers resources for diverse learn ing needs giving individuals\, teams\, organizations\, educators\, and stu dents what they need to advance their knowledge in accelerated computing\, AI\, accelerated data science\, graphics and simulation\, and more. Many DLI programs specifically target academia with the goal of providing facul ty with free training for themselves and their students. This includes fac ulty development workshops\, a certification program for faculty to delive r NVIDIA training material on NVIDIA hardware\, and teaching kits with wor ked problems\, access to online training\, and credits for cloud GPU resou rces. Other NVIDIA programs for academia include a hardware grant program\ , graduate fellowships\, and other funding opportunities. This session wil l present the programs NVIDIA has to offer academia and how they can suppo rt both instruction and research.\n \nTarget Audience: instructional and r esearch faculty in accelerated computing\, AI\, and data science\n\nhttps: //events.chpc.ac.za/event/98/contributions/1571/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1571/ END:VEVENT BEGIN:VEVENT SUMMARY:BoF: South African Modelling and Simulation Roadmap DTSTART;VALUE=DATE-TIME:20211202T131500Z DTEND;VALUE=DATE-TIME:20211202T141500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1569@events.chpc.ac.za DESCRIPTION:Speakers: Regina Maphanga (CSIR)\n**Birds-of-a-Feather (BoF):* *\n\nResearch and developments in Modelling and Simulation (M&S) domain ar e taking place in disparate communities considering different models and p henomena across the various length scales\, with considerable advancements in multiscale approaches and multidisciplinary optimisation. This BoF ses sion seeks to bring together M&S community across disciplines to engage on the National Science and Innovation System: Modelling and Simulation Doma in. The discussions will guide and contribute to the development of Modell ing and Simulation roadmap. \n\n**Programme:**\n\nWelcome - Prof Regina Ma phanga (3 min)\nBackground and Objectives for the M&S Program - Dr Jeffer y Baloyi (15 min)\nProposed Business Plan - Prof Regina Maphanga (15 min )\nDiscussions - All (20 min)\nWay forward - Dr Jeffery Baloyi (5 min)\n Closure\n\nhttps://events.chpc.ac.za/event/98/contributions/1569/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1569/ END:VEVENT BEGIN:VEVENT SUMMARY:Electronic signatures security DTSTART;VALUE=DATE-TIME:20211202T093000Z DTEND;VALUE=DATE-TIME:20211202T100000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1568@events.chpc.ac.za DESCRIPTION:Speakers: Sune Von Solms (University of Johannesburg)\nMany co mpanies are joining the worldwide drive toward a paperless environment. Th e utilisation of digital documents\, contracts or approval forms can save organisations large costs and time as documents can be electronically sign ed and transmitted to their destination within minutes. Electronic signatu res can bring many advantages\, but a review of the current situation show s many cybersecurity threats around the signing of documents in a digital form. Many companies are still in the early phases of utilising electronic signatures\, with many potential opportunities for manipulation. This pap er discusses the various types of electronic signatures\, how they can be exploited and recommends general security measures individuals and organis ations can follow in order to use electronic signatures more securely.\n\n https://events.chpc.ac.za/event/98/contributions/1568/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1568/ END:VEVENT BEGIN:VEVENT SUMMARY:Using genome-resolved metagenomics to understand microbial contrib utions to ecosystem functioning DTSTART;VALUE=DATE-TIME:20211203T120000Z DTEND;VALUE=DATE-TIME:20211203T123000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1567@events.chpc.ac.za DESCRIPTION:Speakers: Thulani Makhalanyane (University of Pretoria)\nMicro biomes mediate crucial ecosystem processes in terrestrial and marine envir onments\, yet data regarding their precise responses to climate change rem ains limited. This knowledge deficit is especially true for extreme Antarc tic environments where the importance of microbial communities is thought to be more pronounced due to the depauperate and oligotrophic nature of su ch systems. Here\, I will discuss our work in understudied deserts (such a s the McMurdo Dry Valleys) and oceans (such as the Southern Ocean) ecosyst ems. I will discuss key insights regarding the diversity and functional tr aits of microbiomes in these regions. I will also highlight how the applic ation of mesocosms (such as ocean acidification experiments) has allowed u s to predict the response of microbiomes to anthropogenic change. I will c onclude by discussing key questions for future research in Antarctic envir onments.\n\nhttps://events.chpc.ac.za/event/98/contributions/1567/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1567/ END:VEVENT BEGIN:VEVENT SUMMARY:Rational design of Sn(IV) porphyrins for photodynamic therapy: fur ther progress and future perspectives DTSTART;VALUE=DATE-TIME:20211202T123000Z DTEND;VALUE=DATE-TIME:20211202T130000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1566@events.chpc.ac.za DESCRIPTION:Speakers: John Mack (Rhodes University)\nOver the last year\, considerable further progress has been made in using a rational design app roach [1] guided by calculations with the Gaussian 09 software package on the Lengau cluster and an application of Michl’s perimeter model [1\,2] to prepare novel Sn(IV) complexes of porphyrin dyes and porphyrin analogue s that are suitable for use as photosensitizer dyes in photodynamic therap y [3-8]. Axial ligation results in low levels of aggregation\, while the S n(IV) ion promotes intersystem crossing resulting in relatively high singl et oxygen quantum yields through a heavy atom effect. Relatively low IC50 values have been obtained during *in vitro* studies against MCF-7 breast c ancer cells [3-9]. Future directions on the use of the Gaussian 09 softwar e package in the context of this research will be described.\n**References **\n[1] J. Mack\, *Chem. Rev.* **2017**\, *117*\, 3444-3478.\n[2] J. Michl \, *Tetrahedron* **1984**\, *40*\, 3845-3934.\n[3] B. Babu\, J. Mack\, T. Nyokong\, *Dalton Trans.* **2020**\, *49*\, 9568-9573.\n[4] B. Babu\, E. P rinsloo\, J. Mack\, T. Nyokong\, *New J. Chem.*\, **2020**\, *44*\, 11006- 11012.\n[5] B. Babu\, J. Mack\, T. Nyokong\, *Dalton Trans.* **2020**\, *4 9*\, 15180-15183.\n[6] B. Babu\, J. Mack\, T. Nyokong\, *Dalton Trans.* ** 2021**\, *50*\, 2177-2182.\n[7] B. Babu\, J. Mack\, T. Nyokong\, *New J. C hem.*\, **2021**\, *45*\, 5654-5658.\n[8] R.C. Soy\, B. Babu\, J. Mack\, T . Nyokong\, *Dyes Pigments*\, **2021**\, *194*\, 109631.\n[9] B. Babu\, A. Sindelo\, J. Mack\, T. Nyokong\, Dyes Pigments\, **2021**\, 185A\, 108886 .\n\nhttps://events.chpc.ac.za/event/98/contributions/1566/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1566/ END:VEVENT BEGIN:VEVENT SUMMARY:South African Universities in a Time Of Increasing Disruption DTSTART;VALUE=DATE-TIME:20211202T090000Z DTEND;VALUE=DATE-TIME:20211202T093000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1564@events.chpc.ac.za DESCRIPTION:Speakers: Johan Coetzee (University of the Free State)\nThe Fo urth Industrial Revolution (4IR) and the Coronavirus Disease 2019 (COVID-1 9) have disrupted the higher education environment in unprecedented ways. This presentation is based on research conducted by the Faculty of Economi c and Management Sciences at the University of the Free State that identif ies the impact of increasing disruption driven by the 4IR and COVID-19 on the content and curriculum design of degree programmes in economic and man agement sciences offered by South African universities. The setting is six South African and five top-tier US and UK universities. The study used a non-positivist qualitative research design and specifically the case-study approach. A document analysis of the information in university yearbooks and prospectuses was conducted\, using a purposive sampling design. The re sults indicate that an online presence will become more important due to i ncreased disruption\, and will not only ensure an additional revenue strea m\, but also promote continuity in operations and mitigate threats from co mpetitors. COVID-19 has accelerated the extent of this disruption and expe dited the migration to online teaching and learning platforms. Furthermore \, since science\, technology\, engineering and mathematics are integral t o the majority of 4IR-related modules\, South African universities must no t shy away from degree programmes that ignore inter- and multi-disciplinar y curriculum designs. Coupled with the challenges facing the majority of S outh African students to access electronic devices\, data and the internet \, COVID-19 has thrust this challenge to the forefront in the South Africa n higher education landscape. By comparing the developments in South Afric an universities with those in trendsetting\, top-tier\, global universitie s\, management can assess the extent to which they are internationally com petitive and adapting to the demands of the 4IR.\n\nhttps://events.chpc.ac .za/event/98/contributions/1564/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1564/ END:VEVENT BEGIN:VEVENT SUMMARY:HPC Market Update and Insights from SC21 DTSTART;VALUE=DATE-TIME:20211201T154500Z DTEND;VALUE=DATE-TIME:20211201T161500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1563@events.chpc.ac.za DESCRIPTION:Speakers: Addison Snell (Intersect360 Research)\nAddison Snell of Intersect360 Research will give an overview of the latest market resea rch and insights for HPC and AI\, including revised market guidance for 20 21\, highlights of their recent HPC software survey\, and insights from SC 21.\n\nhttps://events.chpc.ac.za/event/98/contributions/1563/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1563/ END:VEVENT BEGIN:VEVENT SUMMARY:KEYNOTE 3: 4IR and opportunities within the next decade of compute : The era of Specialized and Confidential Compute DTSTART;VALUE=DATE-TIME:20211201T143000Z DTEND;VALUE=DATE-TIME:20211201T153000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1555@events.chpc.ac.za DESCRIPTION:Speakers: Stephen Ozoigbo (ARM)\nThe Arm ecosystem has defined the last three decades of compute technology and will continue to do so f or a long time to come. Arm’s ambitions for the emerging markets are con sistent with our vision towards deploying technology that enables opportun ity for a globally connected population. \n\nThe new Armv9 architecture forms the leading edge of the next 300 billion Arm-based chips. It include s the Arm Confidential Compute Architecture (Arm CCA)\, a key feature of A rmv9-A\, and the next step in transforming the trust model of compute envi ronments in every application. Armv9 is also be driven by the demand for i ncreasingly specialized\, secure\, and high-performance processing built o n the economics\, design freedom and accessibility of general-purpose comp ute.\n\nConfidential compute is important for client devices. The Arm CCA security features will make their way across all tiers of computing applic ations\, and help to protect IoT sensors\, handsets\, laptops the Internet and the cloud. As digital transformation activities mature across emergin g markets\, public and private stakeholders are focused on ensuring that s ecurity remains at the forefront of their national interests. In the next decade of compute\, the digitization activities around data sovereignty\, information security and national security interests will be critical\, an d policy stakeholders in these markets will embrace programs and practices with a focus on security innovations that ensure competitiveness and pres erve competitive advantages. \n\nIn support of these innovations\, Armv9 i s geared to change the economics and expectations for new and evolving tec hnologies around 5G\, cloud\, and HPC. Performance-wise\, the v9 instructi on set is an upgrade of Arm’s Scalable Vector Extension technology (SVE) . SVE is currently used in the Arm-based Fujitsu A64FX chip that powers Fu gaku - the world’s fastest supercomputer - and SVE2 opens a range of new approaches to deploying more powerful AI across the Cloud\, Edge\, and en dpoints.\n\nIn my proposed presentation\, I will discuss how the Armv9 arc hitecture will influence the next decade of compute\, while supporting cri tical activities that allow emerging market stakeholders to fully embrace multi-sectorial digital transformation and participate in the Fourth Indus trial Revolution (4IR). I will share ecosystem driven solutions that showc ase the transformational power of Confidential Compute\, and highlight how the Armv9 architecture\, driven by our broad ecosystem\, is delivering be st-in-class solutions for Cloud\, Edge and Endpoint AI needs for all tiers of ICT stakeholders.\n\nhttps://events.chpc.ac.za/event/98/contributions/ 1555/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1555/ END:VEVENT BEGIN:VEVENT SUMMARY:KEYNOTE 7: A Pivot of HPC towards Memory-Centric Computers for AI DTSTART;VALUE=DATE-TIME:20211203T143000Z DTEND;VALUE=DATE-TIME:20211203T153000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1535@events.chpc.ac.za DESCRIPTION:Speakers: Thomas Sterling (Indiana University)\nThroughout the rapid evolution of HPC driven by technology advances reflected by Moore ’s Law\, processor core architecture has dominated computer design acros s ten orders (or more) of magnitude in delivered performance. But with the achievement of nanoscale device technology\, exponential gain has stagnat ed demanding alternative innovative strategies. Concurrently\, workloads h ave pivoted from linear algebra to artificial intelligence (AI) with empha sis on supervised machine learning (ML) applications. To address these com bined challenges\, transformative architectures are being explored that ar e memory-centric\, embody data-oriented semantics\, and optimize for laten cy and bandwidth rather than FPU utilization. This closing Keynote address will describe a class of non von Neumann architectures that will accelera te dynamic graph processing across highly scalable computing systems beyon d Exascale through to the end of this decade. A brief discussion of early attempts of memory-centric computing such as SIMD and PIM will motivate re volutionary concepts of the future. Questions from the audience will be we lcome assuming remote communication technology permits.\n\nhttps://events. chpc.ac.za/event/98/contributions/1535/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1535/ END:VEVENT BEGIN:VEVENT SUMMARY:KEYNOTE 6: The evolution of the ARDC Nectar Research Cloud - respo nding to the demands of multi-disciplinary national research in unpreceden ted times. DTSTART;VALUE=DATE-TIME:20211203T090000Z DTEND;VALUE=DATE-TIME:20211203T100000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1533@events.chpc.ac.za DESCRIPTION:Speakers: Carmel Walsh (ARDC)\nThe Nectar Research Cloud has b een supporting Australian national research since 2012. In the last 18 mo nths the ARDC has doubled Nectar’s national capacity and increased its investment in leading-edge technology. This has enabled ARDC Nectar to be flexible in responding to changing research demands and challenges during the COVID-19 Pandemic.\n\nThe talk will highlight how we have approached s ignificant growth in demand\, completing a comprehensive refresh program w hilst also maintaining high levels of service provision with\ncontinual se rvice improvement\, designing and scaling new services for national benefi t and trialling and testing innovative technology at scale\, ensuring we h ave a responsive and adaptive national research cloud for an increasingly digital research ecosystem. \n\nARDC has built a large community through o ur ARDC Research Platforms projects that are developing virtual research e nvironments\, enabling us to design\, test and scale these new services wi th this extended community. The new and improved infrastructure\, services and capabilities of Nectar will support the requirements of research plat forms for image processing\, machine learning\, drones\, genomics\, ecosys tems science\, and sensitive data.\n\nI will also discuss some case studie s in which we were quickly able to provision urgently needed additional co mpute for Covid-19 modelling and responses to the pandemic in a time where supply chain issues and economic pressures made it more challenging.\n\nh ttps://events.chpc.ac.za/event/98/contributions/1533/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1533/ END:VEVENT BEGIN:VEVENT SUMMARY:Introducing Cloud-Native Supercomputing: Bare-Metal\, Secured Supe rcomputing Architecture DTSTART;VALUE=DATE-TIME:20211202T090000Z DTEND;VALUE=DATE-TIME:20211202T093000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1527@events.chpc.ac.za DESCRIPTION:Speakers: Gilad Shainer (NVIDIA)\, David Slama ()\nHigh-perfor mance computing and artificial intelligence have driven supercomputers int o wide commercial use as the primary data processing engines enabling rese arch\, scientific discoveries\, and product development. Extracting the hi ghest possible performance from supercomputing systems while achieving eff icient utilization has traditionally been incompatible with the secured\, multi-tenant architecture of modern cloud computing. A cloud-native superc omputing platform aims at the goal of combining peak system performance wi th a modern zero-trust model for security isolation and multi-tenancy. The key element enabling this architecture transition is the data processing unit (DPU). \n\nThe DPU is a fully integrated data-center-on-a-chip platfo rm that imbues each supercomputing node with two new capabilities: First\, an infrastructure control plane\nprocessor that secures user access\, sto rage access\, networking\, and life-cycle orchestration for the computing node in the data center or at the edge\, offloading\nthese services from t he main compute processor and enabling bare-metal multi-\ntenancy. Second\ , an isolated line-rate data path with hardware acceleration that\nenables high performance. All this infrastructure allows a cloud-native HPC and\n AI platform architecture that delivers HPC performance on an infrastructur e\nplatform that meets cloud services requirements. The implementation of the infrastructure comes from the open-source community and driven by stan dards\, similarly as how some of the traditional HPC software stack that i s maintained by a community including commercial companies\, academic orga nizations\, and government agencies.\n\nWe'll introduce the new supercompu ting architecture\, discuss the first cloud native supercomputers\, \, rev iew first applications performance results\, and explore future directions .\n\nhttps://events.chpc.ac.za/event/98/contributions/1527/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1527/ END:VEVENT BEGIN:VEVENT SUMMARY:FPGA Acceleration of GWAS Permutation Testing DTSTART;VALUE=DATE-TIME:20211203T104500Z DTEND;VALUE=DATE-TIME:20211203T111500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1529@events.chpc.ac.za DESCRIPTION:Speakers: Yaniv Swiel (Wits)\nThe large sample sizes of modern genetic datasets has necessitated the development of high-throughput acce lerators in order to allow bioinformatics research to be performed in a re asonable amount of time. Although the inherently parallel nature of FPGAs makes them well suited to accelerating high-throughput workloads\, they ar e not commonly employed as bioinformatics accelerators (in lieu of CPUs an d/or GPUs) due to their high cost and the fact that developing FPGA-accele rated algorithms is a more complex and time-consuming process than the dev elopment of software for CPUs or GPUs. The availability of cloud-based FPG A instances\, however\, has made powerful FPGAs accessible to bioinformati cs labs and the continuous improvement of FPGA design tools has reduced mu ch of the complexity of FPGA development.\n\nThis work determines the effi cacy of FPGAs when applied to the acceleration of GWAS permutation testing - a computationally expensive bioinformatics algorithm that involves the repeated multiplication of a constant matrix with a changing vector - by p resenting the design and evaluation of an FPGA-based accelerator designed to run on an AWS EC2 FPGA instance. \n\nThis work shows that the FPGA acce lerator is orders of magnitude faster than a popular CPU-based GWAS tool w ithout an apparent loss of accuracy. Furthermore\, this work demonstrates that FPGA acceleration enables the handling of workloads which are almost unfeasible for current CPU-based methods. This work\, therefore\, proves t hat FPGAs can effectively accelerate high-throughput bioinformatics worklo ads at relatively low cost.\n\nhttps://events.chpc.ac.za/event/98/contribu tions/1529/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1529/ END:VEVENT BEGIN:VEVENT SUMMARY:Prime Number algorithm for massively parallel Processor-in-memory machine DTSTART;VALUE=DATE-TIME:20211203T101500Z DTEND;VALUE=DATE-TIME:20211203T104500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1528@events.chpc.ac.za DESCRIPTION:Speakers: Andy Rabagliati (UCT)\nPrime Number algorithm for ma ssively parallel Processor-in-memory machine\n\nDoing Sieve of Eratosthene s on a 1024-way bit-serial processor implemented on an FPGA\n\nThe bit-ser ial processors very simple\, backed with 512 bits of RAM.\n\nAll processor s perform the same operation\, subject to individual processor\nenables\, encompassing boolean logic\, and can read and write their own\n512 bit RAM .\n\nThe 512 bits are allocated among variables\, of arbitrary width\, per haps 32 bits.\n\nBy a succession of boolean operations\, addition\, subtra ction multiply and\ndivide are coded into routines. All these operations h appen in parallel.\n\nAlgorithm design can be difficult\, as all program b ranch paths must be traversed.\n\nA simple sieve on a regular processor ta kes time proportional to the total\nnumber of candidate primes tested\, an d the number of factors used in the divisions.\n\nI present a sieve algori thm with time only proportional to the number of factors.\n\nhttps://event s.chpc.ac.za/event/98/contributions/1528/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1528/ END:VEVENT BEGIN:VEVENT SUMMARY:Overview of http://CASABIO.org\, The First Vertically Integrated C itizen Science Platfor DTSTART;VALUE=DATE-TIME:20211201T134500Z DTEND;VALUE=DATE-TIME:20211201T141500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1525@events.chpc.ac.za DESCRIPTION:Speakers: David Gwynne-Evans (CASABIO.org)\nCASABIO is a citiz en science platform currently focused on African plants. A number of innov ations have been pioneered by CASABIO and these are showcased in the prese ntation. Most importantly CASABIO is the only platform to create a workflo w that allows one to efficiently go from field observation to label. In ad dition\, there are a number of protective features aimed at protecting pla nts in the field from poaching. This is becoming increasingly critical wit h the poaching that is currently taking place in the arid regions of South Africa. CASABIO is also an organisation with a number of assets aimed at facilitating research. We will be publicly revealing for the first time so me of these assets.\n\nhttps://events.chpc.ac.za/event/98/contributions/15 25/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1525/ END:VEVENT BEGIN:VEVENT SUMMARY:Processing longitudinal population data using CHPC DTSTART;VALUE=DATE-TIME:20211201T131500Z DTEND;VALUE=DATE-TIME:20211201T134500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1524@events.chpc.ac.za DESCRIPTION:Speakers: Kobus Herbst (SAPRIN)\nThe South African Population Research Infrastructure Network (SAPRIN) curates longitudinal population d ata collected by four nodes from a total population of more than 400 000 i ndividuals. Due to the dynamic nature of these study populations data repr esenting episodes of individual surveillance needs to be combined in a way that maintains data integrity and takes into account variations between d ata collection sites.\n\nWe need to deconstruct 4\,5 million person years of observation into a day level dataset\, requiring the kind of processing and storage capacity provided by a high performance computing environment such as CHPC. \n\nWe will describe a data processing pipeline\, originall y developed in Pentaho and recently converted to the julia programming lan guage which scales well on the CHPC environment.\n\nhttps://events.chpc.ac .za/event/98/contributions/1524/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1524/ END:VEVENT BEGIN:VEVENT SUMMARY:Smart Spectrum Sharing (S3): Toolboxes to Support Efficient Utilis ation of the National Spectrum Resources DTSTART;VALUE=DATE-TIME:20211201T123000Z DTEND;VALUE=DATE-TIME:20211201T130000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1537@events.chpc.ac.za DESCRIPTION:Speakers: Luzango Mfupe (CSIR)\nThe demand by consumers for ac cess to ubiquitous and affordable communication services including the ap plications of the fourth industrial revolution\, with the need to connect everything to the internet (machine-to-machine\, and human-to-machine comm unications) is exponentially growing in both speed and volume. Radio frequ ency (RF) spectrum is a finite resource of the national ICT infrastructure necessary for enabling exchange of information. In most developing countr ies\, wireless communication technologies remain the cost-effective and pr eferred solution for providing broadband communication networks due to the lack of\, or limited coverage of fixed communication infrastructures such as fiber optic cables which is attributable to the high investment costs. However\, the deployment of wireless network infrastructure depends on th e availability of RF spectrum. As such\, the demand for access to RF spect rum continues to increase and therefore necessitates for an efficient util isation of it. Unfortunately\, the dominant RF spectrum access techniques and management regimes are inefficient since they are based on the tradit ional command-and-control approaches\, which are static in nature. The use of such (outdated) regimes has resulted into an “artificial” scarcity of RF spectrum. This artificially created scarcity leads to two main prob lems: i) limited or inadequate access to RF spectrum\, and ii) high cost o f network deployment which translates to high cost of data. Both these pro blems have a negative impact towards deploying wireless broadband networks for provisioning of universal broadband and communications infrastructure s to the needy communities. The CSIR Smart Spectrum Sharing (S3) platfor m is meant to make available efficient RF spectrum utilisation toolboxes t o stakeholders in the telecommunication sector value chain including the n ational regulators\, network operators and policy-makers to support the ef forts to reduce the cost of communications and easy the barrier of entry i n the telecommunication sector.\n\nhttps://events.chpc.ac.za/event/98/cont ributions/1537/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1537/ END:VEVENT BEGIN:VEVENT SUMMARY:CSIR CHPC support during the National Department of Health Communi ty Health Worker Covid-19 Household Screening Campaign DTSTART;VALUE=DATE-TIME:20211201T120000Z DTEND;VALUE=DATE-TIME:20211201T123000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1526@events.chpc.ac.za DESCRIPTION:Speakers: Herman le Roux (CSIR)\nDuring the start of the Covid -19 pandemic last year\, the National Department of Health launched a numb er of initiatives to combat the spread of the virus. One such initiative w as to conduct household screenings during Lockdown Level 5. This entailed using Community Health Workers to conduct Household Screenings. A basic qu estionnaire was defined and deployed using the Cmore platform. The latter is a collaboration and shared situation awareness platform developed by th e CSIR. It has web and mobile applications. The latter was configured to c ollect screening data entered by approximately 25\,000 Community Health Wo rkers\, which overloaded the existing Cmore production infrastructure host ed in the CSIR ICT Data Centre (on dedicated hardware). Since the health w orkers were deployed across all 9 provinces\, the decision was made to spl it the deployment into 10 servers\, thus 9 provinces plus a spare for nati onal. The CSIR CHPC team got onboard\, and configured 10 servers\, each wi th 164GB RAM\, 32 vCPUs\, and approx. 100GB disk space. This was done in l ess than two weeks. However\, the difficult part was to get an operational copy of the Cmore platform with all its configured data onto the 10 serve rs. This required some innovative approaches\, but the servers were deploy ed\, and more than 3m household screening records collected. 4 of the 10 s ervers remain active\, now for other Covid-19 related deployments in suppo rt of Western Cape Government Health\, Gauteng Province Department Roads & Transport and the National Institute for Occupational Health.\n\nhttps:// events.chpc.ac.za/event/98/contributions/1526/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1526/ END:VEVENT BEGIN:VEVENT SUMMARY:Understanding metal losses during furnace tapping operations using HPC DTSTART;VALUE=DATE-TIME:20211203T134500Z DTEND;VALUE=DATE-TIME:20211203T141500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1519@events.chpc.ac.za DESCRIPTION:Speakers: Quinn Reynolds (Mintek)\nDuring the pyrometallurgica l production of industrial commodities such as ferromanganese and ferrochr omium in electric smelting furnaces\, immiscible molten slag and metal pha ses are tapped from the unit at regular intervals. This process involves o pening a dedicated channel in the furnace sidewall (the tap-hole) and allo wing the contents of the vessel to drain through it. After exiting the tap -hole\, the stream of molten material is directed along open launder chann els and empties into one or more storage ladles. During this process inter mixing of slag and metal phases often occurs\, and if not carefully manage d\, can result in significant metal being lost to the waste slag by entrai nment. \n\nIn this presentation we show the results of a computational flu id dynamics study of the multiphase free surface fluid flow in tapping lad les\, and examine how the application of high-performance computing has gr eatly expanded our ability to explore the unusual and challenging paramete r spaces of problems in pyrometallurgy. Access to facilities such as CHPC allows us to build deeper intuition and fundamental understanding of the c omplex fluid flow phenomena occurring during ladle tapping\, and is able t o guide us to practical engineering solutions for mitigating losses due to phase mixing.\n\nhttps://events.chpc.ac.za/event/98/contributions/1519/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1519/ END:VEVENT BEGIN:VEVENT SUMMARY:Improved COVID-19 classification of cough audio DTSTART;VALUE=DATE-TIME:20211203T131500Z DTEND;VALUE=DATE-TIME:20211203T134500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1517@events.chpc.ac.za DESCRIPTION:Speakers: Thomas Niesler (University of Stellenbosch)\nWe repo rt progress in our research aiming to detect COVID-19 from smartphone aud io recordings. In our previous work we reported that it is possible to d iscriminate between recordings of COVID-19 positive coughs and coughs by COVID-19 negative or healthy individuals using machine learning algorithm s. Since the available datasets of COVID-19 coughs are small\, the classi fiers exhibited a fairly high variance. In subsequent work we have invest igated the effectiveness of transfer learning and bottleneck feature extr action for audio COVID-19 classification\, in this case performing experi ments for three sound classes: cough\, breath and speech. For pre-trainin g\, we use datasets that contain recordings of coughing\, sneezing\, spee ch and other noises\, but do not contain COVID-19 labels. Convolutional neural network (CNN)\, long short term memory (LSTM) and Resnet50 archite ctures were considered. The pre-trained networks are subsequently either f ine-tuned using smaller datasets of coughing with COVID-19 labels in the p rocess of transfer learning\, or are used as bottleneck feature extractors . Results show that a Resnet50 classifier trained by this transfer learni ng process delivers optimal or near-optimal performance across all dataset s achieving areas under the \nreceiver operating characteristic (ROC AUC) of 0.98\, 0.94 and 0.92 respectively for the three sound classes (coughs\ , breaths and speech). This indicates that coughs carry the strongest COV ID-19 signature\, followed by breath and speech. Our results also show th at applying transfer learning to capitalise on the larger datasets withou t COVID-19 labels leads not only to improved performance\, but also stron gly reduces the standard deviation of the classifier AUCs measured on the test sets during cross-validation\, indicating better generalisation. We conclude that transfer learning and bottleneck feature extraction can im prove COVID-19 cough\, breath and speech audio classification\, yielding automatic classifiers with higher accuracy. Since audio classification is non-contact\, does not require specialist medical expertise or laboratory facilities and can be deployed on inexpensive consumer hardware\, it rep resents an attractive method of screening.\n\nhttps://events.chpc.ac.za/ev ent/98/contributions/1517/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1517/ END:VEVENT BEGIN:VEVENT SUMMARY:Computational chemistry methods in understanding the properties of porous materials DTSTART;VALUE=DATE-TIME:20211203T123000Z DTEND;VALUE=DATE-TIME:20211203T130000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1521@events.chpc.ac.za DESCRIPTION:Speakers: Catharine Esterhuysen (Department of Chemistry and P olymer Science\, Stellenbosch University)\nIntermolecular interactions pla y a fundamentally important role in the properties of solid materials. For instance\, molecules ("guests") are taken up into porous materials ("host s") as a result of the interactions between these species\, while the mann er in which they interact has an influence on the sorption ability of the porous material. Several examples from our work will be used to show that calculations performed using the CHPC's computational facility allow us to explain the role that intermolecular interactions play in the unusual sor ption properties of various porous compounds. For instance\, the interacti ons between carbon dioxide and a host porous metal-organic framework yield anomalous sorption isotherms that can be explained by the electrostatic i nteractions between host and guest.[1] This can be extended to study mixtu res of gases\, where CO2 and N2 interact differently with the frameworks\, leading to non-ideal sorption behaviour that influences the ability of a porous compound to separate CO2 from N2.[2] Molecular dynamics calculation s and in combination with simulation of sorption isotherms using the BioVi a MaterialsStudio suite available through the CHPC can hence be used to id entify materials that will yield superior gas separation compounds. \n \n [1] Bezuidenhout\, C. X.\; Smith\, V. J.\; Bhatt\, P. M.\; Esterhuysen\, C .\; Barbour\, L. J. Angew. Chem. Int. Ed. 2015\, 54\, 2079–2083.\n[2] Co standius\, A. J.\; Barbour\, L. J.\; Esterhuysen\, C. In preparation.\n\nh ttps://events.chpc.ac.za/event/98/contributions/1521/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1521/ END:VEVENT BEGIN:VEVENT SUMMARY:Bioinformatics for vegetable breeding at Starke Ayres DTSTART;VALUE=DATE-TIME:20211203T104500Z DTEND;VALUE=DATE-TIME:20211203T111500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1515@events.chpc.ac.za DESCRIPTION:Speakers: Godwin Mafireyi (Starke Ayres)\nStarke Ayres is one of Africa’s largest seed companies in Africa which specializes in the de velopment of superior vegetable seed varieties. Bioinformatics forms a cru cial part of plant breeding as it helps researchers gain a deeper understa nding of the genetics of their germplasm. To do this\, we employ bioinform atics tools and software to perform computationally demanding processes su ch as read alignment to reference genomes\, variant discovery\, genome ass embly and phylogenetics among other processes. As bioinformatics must deal with large amounts of sequence data\, computational resources often becom e a limiting factor. We have been able to use CHPC massive computational p ower to accelerate molecular marker discovery for several traits. These pr ojects would have otherwise been extremely slow or not possible if we reli ed on desktop computers with limited memory\, processing power and storge. The vast amount of core bioinformatics tools and software that is preinst alled and configured on CHPC\, save a lot of time that could have been use d to configure and install these software packages on our local machines. In addition\, parallelization capabilities of CHPC using MPI have made dat a processing quicker and more efficient.\n\nhttps://events.chpc.ac.za/even t/98/contributions/1515/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1515/ END:VEVENT BEGIN:VEVENT SUMMARY:Regional and coastal ocean modelling: toward an operational system for well-informed decision making DTSTART;VALUE=DATE-TIME:20211203T101500Z DTEND;VALUE=DATE-TIME:20211203T104500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1513@events.chpc.ac.za DESCRIPTION:Speakers: Jennifer Veitch (South African Environmental Observa tion Network (SAEON))\nNumerical modelling is an essential component of in tegrated ocean monitoring and\, together with in situ observations and rem ote sensing products\, is one of the critical tools informing stakeholders about highly variable regional and coastal environments. Operational ocea n modelling becomes particularly valuable in South Africa when one conside rs the dynamic nature of its surrounding oceans\, including but not limite d to its proximity to one of the most energetic current systems in the wor ld\, the Agulhas Current. The Agulhas Current exhibits intense mesoscale activity in the form of events such as eddy shedding events at the Agulhas Retroflection\, the interaction of eddies from the Mozambique Channel wit h the Agulhas Current proper\, and the meandering nature of the Agulhas Re turn Current. The unpredictability and intensity of the currents represent a direct risk to industrial\, commercial and leisure activities\, for exa mple\, accidental pollutants\, such as oil spills\, which may advect onsho re to the detriment of the coastal environment. Furthermore\, the Benguela Current system is known to be sensitive to climate change\, and climate v ariability such as the El Niño Southern Oscillation (ENSO). Understanding these dynamics and their function in the ecosystem\, such as associations to harmful algal blooms (HABs) is an important part of resource managemen t. Hence\, the development of regional operational modelling capacity is o f key interest. This program supports SOMISANA (Sustainable Ocean Modellin g Initiative: a South African Approach) whose vision is to facilitate the local development and sustainability of an operational ocean current forec ast system for the South African exclusive economic zone and to do so in a transformative fashion. To this end\, its two immediate goals are: (1) to develop local numerical ocean modelling capacity via student supervision and (2) to develop high resolution ‘hindcast’ numerical models\, optim ized for South Africa’s shelf region as well as bay-scale forecast model s\, downscaled from freely available global products that poorly resolve t he processes in these regions. These objectives will not only lay the foun dation for the development of South Africa’s operational ocean forecasti ng system\, they will also ensure our contribution to UN Decade of Ocean S cience endorsed projects: CoastPredict and ForeSea.\n\nhttps://events.chpc .ac.za/event/98/contributions/1513/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1513/ END:VEVENT BEGIN:VEVENT SUMMARY:Application of Computational Alchemy to screen alloys of alumina ( Al2O3) as a catalyst support DTSTART;VALUE=DATE-TIME:20211202T104500Z DTEND;VALUE=DATE-TIME:20211202T111500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1522@events.chpc.ac.za DESCRIPTION:Speakers: Cecil Ouma (HySA - Infrastracturte)\nDescriptors de rived from density functional theory (DFT) calculations have been the stan dard when it comes to screening any alloy configuration space. However\, d eriving descriptors using DFT comes with high computational costs since an y alloy configuration space is expansive. DFT derived descriptors have bee n used for scaling relationships (SR)\, quantitative structure property re lationships (QSPR) and of late artificial intelligence/machine learning (A I/ML) in screening for alloys and catalysts. However\, SR and QSPR still r equire lots of DFT calculations and AI/ML need lots of training data. Cata lyst support have not been intensively investigated. Much of the focus has been on the catalyst. However\, alumina (Al2O3) has been the most dominan t support in use. Computational alchemy can be used to approximate a desc riptor on a large number of random/hypothetical alloy configurations with low computational cost. This is because it only requires a single set of r eference DFT calculations. Transition metal doped Al2O3 has been reported to possess excellent attributes\, such as the ability to promote surface d iffusion and prevent clustering/sintering by suppressing grain growth. In this study\, using the binding energy as a descriptor\, we screen for rand om/hypothetical alloys of the catalyst support Al2O3 using computational a lchemy. We explore in this study\, some of the limitations of challenges o f this approach in screening for a broad range of alloys. Pt is introduced at different locations within the alloy matrix to make Al2O3 a conductor and suitable for computational alchemy. Like previous studies\, on metal a lloys\, computational alchemy predicts adsorbate BEs in close agreement wi th those obtained using DFT calculations. This study provides insights on how computational alchemy can be useful in materials’ predictions at low computational costs.\n\nhttps://events.chpc.ac.za/event/98/contributions/ 1522/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1522/ END:VEVENT BEGIN:VEVENT SUMMARY:The usefulness of high-performance computing in small scale hydrop ower technology: Investigating the hydrodynamic effects of hydrokinetic tu rbines through validated CFD models DTSTART;VALUE=DATE-TIME:20211202T101500Z DTEND;VALUE=DATE-TIME:20211202T104500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1516@events.chpc.ac.za DESCRIPTION:Speakers: Chantel Niebuhr (University of Pretoria)\nHydrokinet ic energy generation devices within water infrastructure are becoming an e ver-increasing alternative power source. In these applications the extent and characteristics of the downstream wake are of great importance. The vo rtex formation and diffusion of the wake has a complex formation and is de pendent on numerous factors. Validated Computational Fluid Dynamics (CFD) models provide a detailed insight into these formations. These models allo w analysis of the wake behaviour which are helpful in design and installat ion of these systems. Additionally\, the effects of submergence depth and blockage ratio are also possible. Previously costly laboratory testing and simplified inaccurate numerical modelling was utilized due to the large c omputational resources needed to accurately simulate these applications. T he presentation will discuss the simulations made possible through the CHP C resource\, the challenges\, success\, and relevance of the results.\n\nh ttps://events.chpc.ac.za/event/98/contributions/1516/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1516/ END:VEVENT BEGIN:VEVENT SUMMARY:Investigating the Pressure Effects on Structural Behaviour of Garn et-Type Li7La3Zr2O12 Solid Electrolyte Material: A Classical Molecular Dyn amics Study DTSTART;VALUE=DATE-TIME:20211202T093000Z DTEND;VALUE=DATE-TIME:20211202T100000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1520@events.chpc.ac.za DESCRIPTION:Speakers: Raesibe Sylvia Ledwaba (University of Limpopo)\nThe cubic garnet-type Li7La3Zr2O12 is an eminent candidate for next-generation solid state battery technology due to its thermal stability and high ioni c conductivity. As such\, its operation mechanisms need to be thoroughly u nderstood\, particularly focusing on the structural instability challenge reported to occur at lower temperatures. Herein\, the statistical sampling capability of molecular dynamics simulations is employed during the inves tigation of fundamental structural\, kinetic and thermodynamic properties emanating its subjection to pressure and temperature. Systematic induction of pressure yielded transition of the tetragonal phase to the cubic phase at 2 GPa pressure. The lattice parameters for the cubic and tetragonal ph ases\, acquired in the current study are within 0.38 % agreement with lite rature. Furthermore\, the XRD graphs confirm varying phases under differen t pressure conditions. The temperature phase diagram for 0 GPa structure a grees well with the literature trends and interestingly\, the 2 GPa struct ure retained the cubic phase at various temperatures and confirmed in the XRDs and temperature phase diagram. Interrogation of LaO8 dodecahedral and ZrO6 octahedra demonstrated no significant variations in bond lengths and bond angles giving a good indication for the regulation of Li+-transport channel size in the 2 GPa structure. Efforts in this study are a prelimin ary stage to fully understanding the thermodynamic impact as a structural modification avenue pending further investigations.\n\nhttps://events.chpc .ac.za/event/98/contributions/1520/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1520/ END:VEVENT BEGIN:VEVENT SUMMARY:Agriculture Empowered by SuperComputing DTSTART;VALUE=DATE-TIME:20211202T090000Z DTEND;VALUE=DATE-TIME:20211202T093000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1518@events.chpc.ac.za DESCRIPTION:Speakers: Nicolas Erdody (Open Parallel Ltd)\nToday data is ga thered at different scales and at different frequencies by different organ isations using different types of devices much more than any other time in history. \n\nMost of it is gathered using already outdated technologies a nd systems. This creates an integration challenge: digesting data at the l ocal scale\, using it to update regional and nationwide scale models\, and feeding thus learned models back to the local scale to inform local infer ence. \n\nIf every farm has thousands of affordable sensors embedded in th eir environment (soil\, waterways\, animals) constantly “tasting” soil chemistry\, flow rates\, and any kind of biological activity\, it will pr oduce a massive amount of data per day that has to be stored\, analysed\, curated and maintained.\n\nWe could seed all the information such as crop variations\, soil health\, and weather patterns combined with insurance op tions\, credit availability and market forecasts into a single database an d then analyse it through AI and data analytics. Then the goal is to devel op personalised services for a sector replete with challenges such as peak ing yields\, water stress\, degrading soil and comparative lack of infrast ructure.\n\nThis is supercomputing territory. Real-time advanced modelling and simulation for quick decision-making requires significant computing p ower. In this talk\, Open Parallel's Nicolás Erdödy outlines the powerfu l modern technology tools and models available\, but not often used\, for the agriculture sector and how a system of systems similar to a digital tw in shall be developed -from the edge to exascale computing\, to optimise p roduction while measuring climate change as it happens.\n\nhttps://events. chpc.ac.za/event/98/contributions/1518/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1518/ END:VEVENT BEGIN:VEVENT SUMMARY:Computational Chemistry within the Laboratory of Applied Molecular Modelling at NWU DTSTART;VALUE=DATE-TIME:20211201T134500Z DTEND;VALUE=DATE-TIME:20211201T141500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1514@events.chpc.ac.za DESCRIPTION:Speakers: Cornie van Sittert (North-West University)\nIn 2002 with support from the Research Focus Area (Separation Technology) at North -West University (NWU)\, the Laboratory for Applied Molecular Modelling (L AMM) was established. After the evaluation of the researchers' abilities and the research needs\, an investment was made in Accelrys Materials Stud io software. Additionally\, ten workstations and a 12 CPU cluster were ac quired. The focus of the research done at that time in the LAMM was homog eneous catalysis\, which was limited to reactions in the gas phase. Trans ition state calculations\, as well as reaction in solutions\, were a chall enge.\n\nAround the same time\, the CHPC was established. However\, only on 23 January 2016\, the application to register a program at the CHPC was approved. The title of this program is: "Computational Chemistry within the Laboratory of Applied Molecular Modelling at NWU".\n\nWithin this prog ram\, the LAMM supports and facilitates the use of computational chemistry in research at NWU. The projects that ran between January 2016 and March 2018 was: 1. Solvent extraction of Ta\, Nb\, Hf and Zr from various minera ls\; 2. Polymer Blends - a collaboration with UFS and Qatar University. 3. Identification of mechanisms in biochemistry\; 4. Homogeneous and Heterog eneous catalysis\; 5. Collaboration with a group in China on polyphosphaze nes\; and 6. Interfaces in crystals with mechanical engineering at NWU. I n this period (26 months)\, the program used 213896 CPU hours per month. Since then\, some projects ran to completion\, some were added\, some were completed\, and some expanded. The CPU hours have increased to 790636 CP U hours per month.\n\nThe project that expanded the most is "Homogeneous a nd Heterogeneous catalysis"\, specifically heterogeneous catalysis. The f ocus in heterogeneous catalysis is on developing new/alternative catalysts to apply in the generation of alternative renewable energy and pollution control.\n\nhttps://events.chpc.ac.za/event/98/contributions/1514/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1514/ END:VEVENT BEGIN:VEVENT SUMMARY:Surface Enhanced Raman spectroscopy substrates: towards sensitive bio-sensing of infectious diseases DTSTART;VALUE=DATE-TIME:20211201T131500Z DTEND;VALUE=DATE-TIME:20211201T134500Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1539@events.chpc.ac.za DESCRIPTION:Speakers: Nikiwe Mhlanga (Dr)\nSurface-enhanced Raman spectros copy (SERS) is a phenomenon that amplifies conventional Raman signal with roughened metallic substrates. Gold and silver metallic nanoparticles are commonly used as SERS substrates. The application of SERS in diagnostics yields sensitivity\, multiplexing\, and quantification of disease causati ves. However\, the understanding of the SERS architecture and mechanism i s still elusive. Hence the use of density functional theory (DFT) to stud y its chemistry. DFT is used to study the interaction of the metallic sub strates with SERS tags and biological molecules. The simulation results in form experimental work towards the fabrication of reproducible\, sensitive \, qualitative SERS biosensors.\n\nhttps://events.chpc.ac.za/event/98/cont ributions/1539/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1539/ END:VEVENT BEGIN:VEVENT SUMMARY:The IPCC Assessment Report Six: modelling contributions from the C HPC DTSTART;VALUE=DATE-TIME:20211201T120000Z DTEND;VALUE=DATE-TIME:20211201T123000Z DTSTAMP;VALUE=DATE-TIME:20260317T130228Z UID:indico-contribution-98-1512@events.chpc.ac.za DESCRIPTION:Speakers: Francois Engelbrecht (Global Change Institute\, Univ ersity of the Witwatersrand)\nThe Intergovernmental Panel on Climate Chang e (IPCC) Assessment Report Six (AR6) Working Group I (WGI) report\, releas ed in August 2021\, is widely regarded as the most influential and compreh ensive report on climate change composed to date. The report was described as a 'code red' for humanity by the United Nations Secretary General\, an d served as a direct input to the 26th Conference of the Parties (COP26) i n November 2021. African climate science is well represented in the report \, including several modelling papers on the projected climate change futu res of the African continent. The CHPC and most recently its Lengau cluste r played a critical role and in fact made feasible the completion of sever al computationally expensive simulations that underpinned several papers r eferenced by the IPCC AR6. This talk will review those papers\, and their significance. Future directions in Earth System Modelling will also be dis cussed\, in the context of convection permitting models and exascale compu ting\, and the role of the CHPC in ensuring that South African climate mod elling remains internationally competitive will be emphasized.\n\nhttps:// events.chpc.ac.za/event/98/contributions/1512/ LOCATION: URL:https://events.chpc.ac.za/event/98/contributions/1512/ END:VEVENT END:VCALENDAR