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Advanced MPI scheduling: Difference between revisions
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==== Whole nodes ==== <!--T:17--> | ==== Whole nodes ==== <!--T:17--> | ||
''Some 48-core nodes with Skylake processors are now available at [[Cedar]], and [[Niagara]] has 40-core nodes with hyperthreading. This section is awaiting revision to reflect these changes.'' | |||
Most nodes in [[Cedar]] and [[Graham]] have 32 cores and 128GB or more of memory. If you have a large parallel job to run, which can use 32 or a multiple of 32 cores efficiently, you should request whole nodes like so: | Most nodes in [[Cedar]] and [[Graham]] have 32 cores and 128GB or more of memory. If you have a large parallel job to run, which can use 32 or a multiple of 32 cores efficiently, you should request whole nodes like so: | ||
--nodes=2 | --nodes=2 | ||