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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Running MPICH under Slurm, MPI_Comm_spawn unexpectedly creates new processes on any and all of the nodes that Slurm allocates to the job. I would like it to only create new processes locally on the node that called MPI_Comm_spawn.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’ve tried passing MPI_Comm_spawn an info struct created like this:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> MPI_Info info;<o:p></o:p></p>
<p class="MsoNormal"> MPI_Info_create(&info);<o:p></o:p></p>
<p class="MsoNormal"> MPI_Info_set(info, "host", host_name);<o:p></o:p></p>
<p class="MsoNormal"> MPI_Info_set(info, "bind_to", "core");<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">where hostname = “n001” or even the full name “n001.cluster.pssclabs.com”<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">but that doesn’t prevent the problem. Any suggestions?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Kurt<o:p></o:p></p>
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