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

B. E. COMPUTER SEMINAR

Overview of system blue gene/l supercomputer

Overall Organization

B. E. COMPUTER SEMINAR

Blue Gene/L Communications Hardware

Torus

Tree

Ethernet

JTAG

Global interrupts

B. E. COMPUTER SEMINAR

TORUS

Basic architecture of the torus router

B. E. COMPUTER SEMINAR

TREES

B. E. COMPUTER SEMINAR

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.

B. E. COMPUTER SEMINAR

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.

B. E. COMPUTER SEMINAR

Blue Gene System Software

System Software for the I/O Nodes

B. E. COMPUTER SEMINAR

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

Communication Infrastructure

1 Packetizing and alignment

2 Packet ordering

Figure 2: BlueGene/L midplane package.

B. E. COMPUTER SEMINAR

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

B. E. COMPUTER SEMINAR

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

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

B. E. COMPUTER SEMINAR

Thank You

B. E. COMPUTER SEMINAR