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<p class="MsoNormal">Thanks for the reply, Hui.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">configure --prefix=/home/kmccall/mpich-install-4.0b1 --with-device=ch3:nemesis --disable-fortran -enable-debuginfo --enable-g=debug
<o:p></o:p></p>
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<p class="MsoNormal">The program is run via sbatch, which is given a bash script as an argument.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">sbatch --nodes=2 --ntasks=2 --cpus-per-task=24 <bash_script><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The bash script calls mpiexec:<o:p></o:p></p>
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<p class="MsoNormal">mpiexec -print-all-exitcodes -enable-x -np 2 -wdir ${work_dir} -env DISPLAY localhost:10.0 --ppn 1 <cmd><o:p></o:p></p>
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<p class="MsoNormal"><b>From:</b> Zhou, Hui <zhouh@anl.gov> <br>
<b>Sent:</b> Friday, January 7, 2022 2:39 PM<br>
<b>To:</b> discuss@mpich.org<br>
<b>Cc:</b> Mccall, Kurt E. (MSFC-EV41) <kurt.e.mccall@nasa.gov><br>
<b>Subject:</b> [EXTERNAL] Re: Slurm and MPI_Comm_spawn<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">MPICH uses PMI 1 by default.<o:p></o:p></p>
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<p class="MsoNormal">How is your MPICH configured? And how do you run your program, is it via srun?<o:p></o:p></p>
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<p class="MsoNormal">-- <br>
Hui Zhou<o:p></o:p></p>
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<b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">Mccall, Kurt E. (MSFC-EV41) via discuss <<a href="mailto:discuss@mpich.org">discuss@mpich.org</a>><br>
<b>Date: </b>Friday, January 7, 2022 at 2:21 PM<br>
<b>To: </b><a href="mailto:discuss@mpich.org">discuss@mpich.org</a> <<a href="mailto:discuss@mpich.org">discuss@mpich.org</a>><br>
<b>Cc: </b>Mccall, Kurt E. (MSFC-EV41) <<a href="mailto:kurt.e.mccall@nasa.gov">kurt.e.mccall@nasa.gov</a>><br>
<b>Subject: </b>[mpich-discuss] Slurm and MPI_Comm_spawn<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in">My MPICH/Slurm job is failing when the call to MPI_Comm_spawn is made. The Slurm MPI guide
<a href="https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fslurm.schedmd.com%2Fmpi_guide.html%23mpich2&data=04%7C01%7Ckurt.e.mccall%40nasa.gov%7C85a0f5810bf64b7adaee08d9d21db0c7%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C637771847237637255%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=ypExoCbDiU1nAf7Y8XHIj8Og9I3ZRK0IgKXZi0KHnCw%3D&reserved=0">
https://slurm.schedmd.com/mpi_guide.html#mpich2</a> specifically states that MPI_Comm_spawn will work going through Hydra’s PMI 1.1 interface.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> <o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">How do I ensure that it goes through that interface?
<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> <o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">Maybe we’ll have to rebuild Slurm to support PMI 1.1. This Slurm command yields the following and PMI 1.1 is not mentioned, although PMI 2 is.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> <o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">$ srun –mpi=list<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">srun: MPI types are...<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">srun: cray_shasta<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">srun: pmi2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">srun: none<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> <o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> <o:p></o:p></p>
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