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IBM POWER5+ supercomputer





IBM POWER5+ - SCHIRRA SUPERCOMPUTER

The IBM supercomputer is the first of multiple systems selected to evaluate next-generation technology to meet NASA's future supercomputing requirements. The system is named "Schirra" to honor the late astronaut Walter Schirra.

Schirra System Facts

Manufacturer - IBM

System Architecture
  • 6 Cabinets
  • 4.8 Tflop/s cluster
  • Nodes
    • 40 IBM 9118-575 nodes
    • POWER5+ processors
    • Processor speed - 1.9GHz
    • 320 (dual core) processors, 640 cores
    • 36MB L3 cache per processor
Subsystem
  • 2 front-end nodes
Memory
  • Type - IBM DIMMS
  • Per core - 2GB
  • Total Memory - 1,280GB
Interconnect
  • Internode - High Performance Switch among nodes
  • Intranode - Enhanced Distributed Switch within nodes
  • 10Gb Ethernet LAN/WAN connection from front-end and storage nodes
Storage - Data Direct RAID, 160TB
  • IBM General Parallel File System (GPFS) - cluster-wide filesystem
Operating Environment
  • Operating system - AIX Unix
  • Job Scheduler - PBS
  • Compilers - IBM C/C++, IBM Fortran, IBM POE, gcc, g++


ADDITIONAL INFORMATION

 + Getting an account at NAS

+ IBM POWER System Documentation

+ Walter Schirra Biography



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Last Updated: August 26, 2008