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How do I build Open MPI with memory affinity / NUMA support (e.g., libnuma)?

April 26, 2017affinity build memory MPI numa support

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How do I build Open MPI with memory affinity / NUMA support (e.g., libnuma)?

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Open MPI currently only supports libnuma memory affinity for Linux-based systems (please let us know if there are other NUMA libraries that you need supported!). Support for libnuma must be explicitly requested with the “–with-libnuma” command line switch to Open MPI’s configure script. In general, the procedure is the same building support for high-speed interconnect networks, except that you use –with-libnuma. For example: shell$ ./configure –with-libnuma=/path/to/libnuma/installation After Open MPI is installed, you should see an maffinity component named “libnuma”: shell$ ompi_info | grep libnuma MCA maffinity: libnuma (MCA v1.0, API v1.0, Component v1.0) Specific frameworks and version numbers may vary, depending on your version of Open MPI. See this FAQ entry for more details. 32. How do I not build a specific plugin / component for Open MPI? The –enable-mca-no-build option to Open MPI’s configure script enables you to specify a list of components that you want to skip buildi