[petsc-dev] Question about MPICH device we use

[Matthew Knepley]

We default to ch3:sock. Scott MacLachlan just had a long thread on the
Firedrake list where it ended up that reconfiguring using ch3:nemesis had a
2x performance boost on his 16-core proc, and noticeable effect on the 4
core speedup.

Why do we default to sock?

  Thanks,

     Matt

-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener

https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>
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