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Pamunkey

Pamunkey is a subcluster of Chesapeake composed of two 64-core Opteron "Abu Dhabi" nodes connected with 10 Gigabit Ethernet. Its front-end is chesapeake.hpc.vims.edu.

Both nodes have the node property c19. Specify, for example, in your job script:

  #PBS -l nodes=1:c19:ppn=8

Because of the processor topology, you will generally get the most consistent performance by specifying ppn as an even number.

Preferred filesystems

The preferred filesystem for Pamunkey is /local/scr, which on Pamunkey nodes is much larger and faster than the /local/scr on most other nodes. If you need a global filesystem, the preferred filesystem is /ches/scr10, which is about 50% faster than /ches/data10.