1.0UCT HPChttps://ucthpc.uct.ac.zaAndrew Lewishttps://ucthpc.uct.ac.za/index.php/author/andrew-lewis/MPI affinity - UCT HPCrich600338<blockquote class="wp-embedded-content" data-secret="D9L18Fg7CZ"><a href="https://ucthpc.uct.ac.za/index.php/2015/08/06/mpi-affinity/">MPI affinity</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://ucthpc.uct.ac.za/index.php/2015/08/06/mpi-affinity/embed/#?secret=D9L18Fg7CZ" width="600" height="338" title="“MPI affinity” — UCT HPC" data-secret="D9L18Fg7CZ" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript">
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MPI socket vs core affinity When running a MPI job you can bind your threads to either a socket or to individual cores. There is no one best solution, the choice depends completely on your task and the way it deals with memory. For instance binding all cores to a socket may speed up the...