[Beowulf] Optimizations for smaller scale linux clusters

[John Hearns]

Trevor,
If you have a Mellanox fabric it is well worth looking at:

http://www.mellanox.com/related-docs/prod_software/Performance_Tuning_Guide_for_Mellanox_Network_Adapters.pdf


Also look at my pet tuning parameter of  min_free_kbytes !!

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