JPL Dell Xeon Clusters

The Dell Xeon clusters are scalable distributed-memory multiprocessor systems. Each of these clusters runs the Linux operating system.

cosmos.jpl.nasa.gov

The Cosmos cluster combines the scalability of a massively-parallel machine, and the high-capacity memory bandwidth of the Myrinet technology. It supports parallel programming with the message-passing interface (MPI).

Peak Performance:

• 6.55 TFLOPS

Configuration:

• 1 Head (login) node
• 1 Admin node
• 512 Compute nodes
• 2 Intel Pentium 4 Xeon processors per node
• 32-bit architecture
• 3.2 GHz clock speed
• 1 MB cache per CPU
• 2 GB memory (RAM) per CPU
• 53 GB local scratch disk per node
• 8 I/O nodes
• 255 GB disk per node
• 32 TB SFS Lustre Parallel File System

Architecture:

• Myricom Myrinet-2000 fibre interconnect
• 1000BaseT (Gigabit ethernet) interconnect

Operating System:

• RedHat Linux Enterprise Edition 4.4

Job Scheduler:

• Altair PBS Pro v10.0.0

galaxy.jpl.nasa.gov / nebula.jpl.nasa.gov

The Galaxy and Nebula clusters are both well suited for embarrassingly-parallel problems that divide easily amoungst the processors, rather than for massively-parallel problems.

Peak Performance:

• 3.13 TFLOPS

Configuration:

• 1 Head (login) node
• 1 Admin node
• 256 Compute nodes
• 2 Intel Pentium 4 Xeon processors per node
• 32-bit architecture
• 3.06 GHz clock speed
• 1 MB cache per CPU
• 2 GB memory (RAM) per CPU
• 53 GB local scratch disk per node
• 2 I/O nodes
• 1.8 TB disk per node

Architecture:

• 1000BaseT (Gigabit ethernet) interconnect

Operating System:

• RedHat Linux Enterprise Edition 4.4

Job Scheduler:

• Altair PBS Pro v10.0.0

For information on the Dell Xeon Cluster software, see the

JPL Dell Xeon Cluster Software Guide.

For an introductory tutorial on using the Dell 1750, see the

Dell Xeon Cluster User's Guide.

For information on reading or writing files larger than 2 gigabytes, see

2 GB File and Memory Size Limitations.

Related pages:

Dell PowerEdge 1750 Server Technical Information

Myricom Myrinet Components and Software Overview

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