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International High Performance Computing Troels Haugbølle Centre for Star and Planet Formation Niels Bohr Institute PRACE User Forum Why International HPC ? • Large-scale science projects can require resources beyond what is available in Denmark: • Achieving science that requires enormous resources for a short time [capability computing] • Carrying out science programs that necessitates a large amount of resources [capability & capacity computing] • Why should you care ? Break new ground scientifically, go to the next level • Danish membership of PRACE give researchers in Denmark free access to the largest computers in Europe • Even larger resources exist through INCITE and HPCI DeiC, Middelfart – Oktober 2015 Troels Haugbølle – [email protected] The HPC Pyramid Tier-0 International 50.000+ cores PRACE Tier-1 Computerome Tier-1: National & International 10-50.000 cores Tier-2: Local HPC centers 1.000-10.000 cores DeiC, Middelfart – Oktober 2015 Local centers Abacus-2.0 Troels Haugbølle – [email protected] http://www.prace-ri.eu/prace-in-a-few-words • 25 members countries • Hosting members: €400M (30 ø/ch) • Established in 2010 • EU & other members: €130M • • 412 projects awarded 10.700 million core-hours • 18 Pflops/s at 6 world-class systems DeiC, Middelfart – Oktober 2015 Troels Haugbølle – [email protected] FERMI (IT) 2 PFs, 164 TB 163.840 cores Blue-Gene/Q SUPERMUC (DE) 3.2 PFs, 340 TB 155.656 cores x86 + Infiniband Curie (FR) 2 PFs, 378 TB 52.992 cores x86 + Infiniband DeiC, Middelfart – Oktober 2015 Mare Nostrum (ES) 1 PFs, 100 TB 49.568 cores x86 + Infiniband JUQUEEN (DE) 5.9 PFs, 459 TB 458.752 cores Blue-Gene/Q HORNET (DE) 3.8 PFs, 493 TB 94.565 cores Cray XC40 Troels Haugbølle – [email protected] What does PRACE offer to Danish researchers ? • • Access based on scientific excellence Access is free, once awarded • Three levels: • Prepatory access: Used to establish the readiness of codes, comes with abundant technical support – low threshold • • • DECI Tier-1 access: One call per year; collection of national Tier-1 machines; based on juste retour for 70% of resources, 30% are “free”, and can be used by e.g. Danish researchers Tier-0 access: Two calls per year, based on membership and pure scientific excellence PRACE Training and support: • PRACE offer courses at all levels by the best international experts • • Workshops about scaling of your own applications PRACE make BEST PRACTICE guides for different HPC architectures DeiC, Middelfart – Oktober 2015 Troels Haugbølle – [email protected] DK: ~3% or 320 million core-hours Access to PRACE resources by country 2010-2015 DeiC, Middelfart – Oktober 2015 Troels Haugbølle – [email protected] PRACE by discipline DeiC, Middelfart – Oktober 2015 Troels Haugbølle – [email protected] PRACE Tier-0 Call is open! MareNostrum: 120 million core-hours FERMI: 390 million core-hours Typically 10 (MN) or 40 (FERMI) million core-hours per project Transition: Larger grants in the future http://www.prace-ri.eu/prace-project-access DeiC, Middelfart – Oktober 2015 Troels Haugbølle – [email protected] Requirements for Tier-0 • Excellent, exciting, and disruptive science(!) • ~10 pages of application; some parts highly technical – but return is equivalent to ~1 MDKK • Open research by industry is encouraged • Application readiness, proven scalability past 1000 cores DeiC, Middelfart – Oktober 2015 Troels Haugbølle – [email protected] Requirements for Tier-1 • Excellent and exciting science • ~3-4 pages of application containing • Scientific objectives; technical innovation potential • Profile and performance of code(s), including scalability • How requested core-hours was calculated • Specific benefits expected from PRACE • Typical grant size: 0.5 to 3 million core-hours • Call deadline just passed in September (every year) • Many machine types: Cray, x86, GPUs, Phi’s, BG/Q, SMPs • ~100 Million core-hours offered DeiC, Middelfart – Oktober 2015 Troels Haugbølle – [email protected] Access through PRACE Peer Review Free-of-charge required to publish results at the end of the award period Open to international projects Project Access (every 6 months) award period 1 to 3 years Individual researchers and groups No restriction on nationality for both researcher and centre Required to demonstrate technical feasibility of project Preparatory Access (cut-off date every 3 months) Optional support from PRACE experts Prepare proposals for Project Access [From PRACE standard slides] Project Access Open Call for Proposals Technical Review Priorisation Scientific Right + Peer Review to reply Resource Allocation ~ 3 Months ~ 2 Months Technical experts in PRACE systems and software Researchers with expertise in scientific field of proposal Project + Final Report Up to 3 years Access Committee Researcher www.prace-ri.eu/call-announcements/ [From PRACE standard slides] DeiC http://www.prace-ri.eu/organization DeiC, Middelfart – Oktober 2015 Troels Haugbølle – [email protected] PRACE is too complicated for me! Core-hours Application Scalability Science case Additional PRACE activities • Preparatory grants: • Very easy to obtain • Grants to establish scaling, remove bottlenecks SEND YOUR STUDENTS • Lots of technical support AND YOURSELF! • ~100.000 core-hours, not for science • PRACE Advanced Training centers: (~70 free schools/yr!) • BSC (Barcelona), CINECA (Italy), CSC (Finland), EPCC (Edinburgh), Gauss Centre for Supercomputing (Germany), Maison de la simulation (Paris) • Best of the best teachers http://www.prace-ri.eu/trainings • Topics: Parallel programming, viz, scaling, application specific schools, data analytics, etc etc • Train-the-Trainers program for teachers DeiC, Middelfart – Oktober 2015 Troels Haugbølle – [email protected] Beyond PRACE • Use your network! Has worked well for us to get access in Germany, Spain, NASA/Ames, Blue Waters, SDSC, … • Go beyond PRACE Grants of ~100 million core-hours Deadline spring 2016, 6 Int. projects https://proposals.doeleadershipcomputing.org Grants of 10-100 million core-hours Call for proposals open; deadline November 2 http://www.hpci-office.jp/pages/e_h28_boshu DeiC, Middelfart – Oktober 2015 Troels Haugbølle – [email protected] Summary • Through international HPC Danish research and industry can get access to substantial resources at all levels • Tier-1: 0.5-3 million core-hours • Tier-0: ~10 million core-hours (to increase in next call!) • …and beyond: at the ~100 million core-hour level • Universally based on scientific excellence • PRACE also give access to valuable training resources • PRACE is currently in a transition phase; this should be resolved by 2016 • Some scientific breakthroughs can only be achieved using international resources ! Critical for the success of Danish researchers, and a necessary complement to national HPC DeiC, Middelfart – Oktober 2015 Troels Haugbølle – [email protected]
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