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INDEX

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

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INDEX

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  1. 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

  2. B. E. COMPUTER SEMINAR Overview of system blue gene/l supercomputer Overall Organization

  3. B. E. COMPUTER SEMINAR Blue Gene/L Communications Hardware Torus Tree Ethernet JTAG Global interrupts

  4. B. E. COMPUTER SEMINAR TORUS Basic architecture of the torus router

  5. B. E. COMPUTER SEMINAR TREES

  6. B. E. COMPUTER SEMINAR ETHERNET Only I/O nodes are attached to the Gbit/s Ethernet network, giving 1024x1Gbit/s links to external file servers. JTAG The JTAG protocol is used for reading and writing to any address of the 16 KB SRAMs in the BG/L chips. Outline of the Blue Gene/L system software.

  7. B. E. COMPUTER SEMINAR Hardware Technologies for petascale computing • 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 Special Purpose hardware Built a family of special-purpose attached processors for performing the gravitational force computations that form the inner loop of N-body simulation problems.

  8. B. E. COMPUTER SEMINAR Blue Gene System Software System Software for the I/O Nodes

  9. B. E. COMPUTER SEMINAR System Software for the Compute Nodes • CIOD in two scenarios: • driven by a console shell (called CIOMAN) • driven by a job scheduler (such as LoadLeveler) System Management Software Midplane Management and Control System (MMCS) The custom control library can perform: • 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. Compiler and Run-time Support • Linux for I/O nodes • BLRTS for compute nodes

  10. B. E. COMPUTER SEMINAR Communication Infrastructure 1 Packetizing and alignment 2 Packet ordering Figure 2: BlueGene/L midplane package.

  11. B. E. COMPUTER SEMINAR Blue Gene/L Simulation Environment Trends in Performance of Super Computer • Rapid changes in vendors, architectures, technologies, and system • usagein last 50 yrs. • The Top500 list has been updated twice a year since June 1993 Programming methodologies for petascale computing • A data parallel programming language, • Message passing between sequential processes, • Multithreading Validating the architecture with application programs BlueGene/L’s unique features are especially appealing for ASCI-scale scientific applications.

  12. B. E. COMPUTER SEMINAR Blue Gene science applications development • 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

  13. 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

  14. 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

  15. B. E. COMPUTER SEMINAR Question & Answers

  16. B. E. COMPUTER SEMINAR ThankYou

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