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Commit 51cb767b authored by Matthieu Schaller's avatar Matthieu Schaller
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Merge branch 'mpi_and_ht_affinity' into 'master'

Simplify, permit user control over affinity

This ensures we 'do the right thing' when the user imposes affinity through e.g. Intel MPI's I_MPI_PIN_DOMAIN or other mechanisms. Also no longer does works with a shuffled ```cpuid``` array, which will hopefully have less surprising failure modes, and means we don't have to handle hyperthreading explicitly. If we want to be clever in this way e.g. to maximise available cache, then we could replace libnuma with hwloc as discussed elsewhere.

Hopefully this gives us a reasonable affinity which is easily overridden using standard techniques.

See merge request !120
parents 145f97b5 e48bdf1c
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