Post on 11-May-2015
ASEMINAR REPORT
“Advance Network Storage Systems”
INDEX
Introduction
Overview of system blue gene/l supercomputerBlue gene system software
Blue gene/l simulation environment
Trends in supercomputerProgramming methodologies for petascale computing
Validating the architecture with application programs
Blue Gene science applications development
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Overview of system blue gene/l supercomputer
Overall Organization
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Blue Gene/L Communications Hardware
Torus
Tree
Ethernet
JTAG
Global interrupts
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TORUS
Basic architecture of the torus router
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TREES
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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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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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Blue Gene System Software
System Software for the I/O Nodes
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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:
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Communication Infrastructure
1 Packetizing and alignment
2 Packet ordering
Figure 2: BlueGene/L midplane package.
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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-scalescientific applications.
•A data parallel programming language,•Message passing between sequential processes,•Multithreading
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Blue Gene science applications development
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•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
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
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
Question & Answers
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Thank You
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