JPL SGI Altix 3700 Systems

The Altix 3700 is a scalable shared-memory multiprocessor system from Silicon Graphics, Inc.

SGI's cc-NUMA (cache coherent non-uniform memory access) architecture supports shared-memory SMP (OpenMP or Pthreads) and message-passing (MPI or SHMEM) programming, or a combination of both (hybrid programming). It combines the scalability of a massively-parallel machine, and the high-capacity memory bandwidth of vector technology. No embarrassingly-parallel jobs are to be ran on these systems.

gemini.jpl.nasa.gov

Gemini is the front-end login system for the Altix cluster. Its primary purpose is for code development and other interactive tasks.

Peak Performance:

• 384 GFLOPS

Configuration:

• 64 Intel Itanium2 processors
• 64-bit architecture
• 1.5 GHz clock speed
• 6 MB cache per CPU
• 64 GB main memory
• 94 GB local disk (home)
• 22 TB SAN disk (workg)

Architecture:

• SGI cc-NUMA

Operating System:

• SuSE Linux 10

Job Scheduler:

• Altair's PBS Pro v10.0

castor.jpl.nasa.gov / pollux.jpl.nasa.gov

Castor and Pollux are the back-end compute systems for the Altix cluster. No code development should be performed on these systems.

Peak Performance:

• 1.54 TFLOPS

Configuration:

• 256 Intel Itanium2 processors
• 64-bit architecture
• 1.5 GHz clock speed
• 6 MB cache per CPU
• 512 GB main memory
• 957 GB local disk (lscratch)
• 44 TB SAN disk (workc) (Castor)
• 44 TB SAN disk (workp) (Pollux)

Architecture:

• SGI cc-NUMA

Operating System:

• SuSE Linux 10

Job Scheduler:

• Altair PBS Pro v10.0

For information on the Altix 3700 software, see the

JPL Altix 3700 Software Guide.

For an introductory tutorial on using the Altix systems, see the

Altix User's Guide.

Related pages:

SGI Altix 3700 Technical Information

SGI Online Software Documentation

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