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Subject: [OMPI users] Question on building OpenMPI with support for memory affinity
From: Blosch, Edwin L (edwin.l.blosch_at_[hidden])
Date: 2013-05-29 09:45:26


The FAQ talks about building support for memory affinity by adding -with-libnuma=<path>

However, I did not do that, and yet when I check ompi_info, it looks like there is support from the hwloc module.

Can I assume the FAQ is a little stale and that -with-libnuma is not really necessary anymore?

[bloscel_at_mgmt1 bin]$ ./ompi_info | grep affi
          MPI extensions: affinity example
           MCA paffinity: hwloc (MCA v2.0, API v2.0, Component v1.6.4)
           MCA maffinity: first_use (MCA v2.0, API v2.0, Component v1.6.4)
           MCA maffinity: hwloc (MCA v2.0, API v2.0, Component v1.6.4)