Transcript Slide 1
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
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What’s new – Software