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IBM Portfolio Update IDC User Forum John S. Zuk WW Portfolio & Strategy; Deep Computing © 2008 IBM Corporation What’s new – Blue Gene/P Blue Gene/P job modes allow flexible use of node memory Two cores run one MPI process each Each process may spawn one thread on core not used by other process Memory / MPI process = ½ node memory Hybrid MPI/OpenMP programming model One core runs one MPI process Process may spawn threads on each of the other cores Memory / MPI process = full node memory Hybrid MPI/OpenMP programming model Application M M Memory address space 2 M M Core 3 P T M Memory address space P Core 0 T Application Core 2 Core 0 Core 0 M P P Core 3 P Core 2 P Core 1 P Core 1 Application CPU2 T CPU3 T M Memory address space Core 3 Memory / MPI process = ¼ node memory MPI programming model SMP Mode Core 2 Previously called Virtual Node Mode All four cores run one MPI process each No threading Dual Mode Core 1 Quad Mode T What’s new – Blue Gene/P High-Throughput Computing (HTC) modes on Blue Gene/P BG/P with HTC looks like a cluster for serial and “pleasantly” parallel apps Hybrid environment … standard HPC (MPI) apps plus now HTC apps Enables a new class of workloads that use many single-node jobs Easy administration using web-based Navigator HTC App6 App9 App8 App8 App1 App1 App1 App1 App7 App8 App9 App6 App1 App1 App1 App1 App6 App8 App8 App9 App1 App1 App1 App1 App7 App7 App9 App6 App1 App1 App1 App1 HPC Whitepaper HTC Q-Mode 512 nodes 3 HTC DM 256 nodes HTC SMP 256 nodes HPC 1024 nodes Why HTC? Collaboration across several National Energy Research organizations created Materials Aging Institute (MAI) to help power companies optimize operations and lifetimes of existing nuclear plants and support the design of next generation plants BG/P used to simulate, model and analyze equipment corrosion, component and materials degradation due to irradiation, and performance of nonmetallic materials EDF uses BG/P… In HPC mode for CFD and environment simulations with various apps such as Euler, Lagrangian SPH, Finite Element, VASP In HTC mode for CATHARE (used in thermal hydrodynamic studies) In HPC/HTC hybrid modes for risk analysis and process management Although MAI’s primary focus is on nuclear materials, research results will also benefit fossil and hydropower facilities www.spscicomp.org/ScicomP13/Presentations/User/PascalVezolle-EDF.pdf 4 What’s new – Software