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| software:openmpi:farber [2018-04-26 12:47] – sraskar | software:openmpi:farber [2021-04-27 16:21] (current) – external edit 127.0.0.1 | ||
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| + | ===== Open MPI on Farber ===== | ||
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| + | IT provides templates for two job script variants for the **mpi** parallel environment on Farber located in ''/ | ||
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| + | * OpenIB Verbs variant: **// | ||
| + | * Generally, you should get good performance from the default, verb-based openIB, approach, one that is not limited by the Grid Engine scheduler. | ||
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| + | * OpenIB Verbs hybrid variant with generic threads-per-worker: | ||
| + | * Same as OpenIB Verbs performance including OpenMP and MKL threading options for a hybrid variant. | ||
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| + | * Low-bandwidth Ethernet variant: **// | ||
| + | * If your openMPI program has been tuned for Ethernet rather than InfiniBand, this job script may be more suitable than the OpenIB Verbs script variant. | ||
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| + | You may copy and customize these templates to provide the best performance when running your Open MPI applications. See [[/ | ||
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| + | <note tip>It is a good idea to periodically check in ''/ | ||