2. INDEX
Introduction
Overview of system blue gene/l supercomputer
Blue gene system software
Blue gene/l simulation environment
Trends in supercomputer
Programming methodologies for petascale computing
Validating the architecture with application programs
Blue Gene science applications development
B. E. COMPUTER SEMINAR
3. Overview of system blue gene/l supercomputer
Overall Organization
B. E. COMPUTER SEMINAR
7. ETHERNET
JTAG
Outline of the Blue Gene/L system software.
Only I/O nodes are attached to the Gbit/s Ethernet network, giving
1024x1Gbit/s links to external file servers.
The JTAG protocol is used for reading and writing to any address of the 16 KB
SRAMs in the BG/L chips.
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8. Hardware Technologies for petascale computing
Special Purpose hardware
5 main categories:
• Conventional technologies
• Processing in-memory (PIM) designs
• Designs based on super conducting processor technology
• Special purpose hardware designs
• Schemes that use the aggregate computing power of Web-distributed processors
Built a family of special-purpose attached processors for performing the
gravitational force computations that form the inner loop of N-body simulation
problems.
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9. Blue Gene System Software
System Software for the I/O Nodes
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10. System Software for the Compute Nodes
System Management Software
Compiler and Run-time Support
CIOD in two scenarios:
• driven by a console shell (called CIOMAN)
• driven by a job scheduler (such as LoadLeveler)
Midplane Management and Control System (MMCS)
•low level hardware operations
• turn on power supplies, monitor temperature sensors and fans,
and react accordingly.
• configure and initialize IDo, Link and BG/L chips
• read and write configuration registers, SRAM and reset the cores
of a BG/L chip.
• Linux for I/O nodes
• BLRTS for compute nodes
The custom control library can perform:
B. E. COMPUTER SEMINAR
12. Blue Gene/L Simulation Environment
Trends in Performance of Super Computer
Programming methodologies for petascale computing
Validating the architecture with application programs
•Rapid changes in vendors, architectures, technologies, and system
usagein last 50 yrs.
•The Top500 list has been updated twice a year since June 1993
BlueGene/L’s unique features are especially appealing for ASCI-scale
scientific applications.
•A data parallel programming language,
•Message passing between sequential processes,
•Multithreading
B. E. COMPUTER SEMINAR
13. Blue Gene science applications development
B. E. COMPUTER SEMINAR
•It is the application platform for the Blue Gene Science program
•It serves as a prototyping platform for research into application
frameworks suitable for cellular architectures.
•It provides an application perspective in close contact with the
hardware and systems software development teams
14. Conclusion/Summary Point
•New series of high performance machines
•The first small prototypes will be available
•Simulation environment
•Demonstrate a complete and functional system
software environment before hardware becomes available
15. Bibliography
[1] “An Overview of the Blue Gene /L System Software Organization”, 5 5
George Alm’asi, Ralph Bellofatto, Jos´e Brunheroto , C¢alin Cas¸caval ,
Jos´e G. Casta˜nos , Luis Ceze , Paul Crumley , C. Christopher Erway ,
Joseph Gagliano , Derek Lieber , Xavier Martorell , Jos´e E. Moreira ,
Alda Sanomiya , and Karin Strauss
[2] “High Performance Computing-The Quest for Petascale Computing”,
Jack J. Dongarra, David W. Walker
[3] “An Overview of Blue Gene/L Supercomputer”, W Barrett, C Engel, B
Drehmel, B Hilgart, D Hill, F Kasemkhani, D Krolak, CT Li, T Liebsch, J Marcella,
A Muff, A Okomo, M Rouse, A Schram, M Tubbs, G Ulsh, C Wait, J Wittrup
