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<p>Hi,</p>
<p>I'm working on a supercomputer which only provides Spectrum MPI
implementation in modules. Since our code does not perform well
with Spectrum MPI I decided to install an MPICH build on our own
partition (I'm not an administrator.) The supercomputer has a
rhel8 system on ppc64le architecture with Slurm as the process
manager. I tried several building options according to the user
guide but could not run a job so I have a few questions. Here are
things I tried:</p>
<p>1. Build with Hydra PM. I could not launch a job with Hydra at
all.</p>
<p>2. Then I decided to use ``--with-pm=none`` option to build and
use srun + ``mpiexec -f hostfile`` to launch my job. But what
confuses me is the PMI setting:</p>
<p>srun --mpi=list gives following:</p>
<p>srun: mpi/mpichgm<br>
srun: mpi/mpichmx<br>
srun: mpi/none<br>
srun: mpi/mvapich<br>
srun: mpi/openmpi<br>
srun: mpi/pmi2<br>
srun: mpi/lam<br>
srun: mpi/mpich1_p4<br>
srun: mpi/mpich1_shmem</p>
<p>At first I tried use pmix since I found pmix libraries. But it
didn't do the trick. It segfaults on PMPI_Init_thread(). The error
message is:</p>
<p><i>[dcs135:2312190] PMIX ERROR: NOT-FOUND in file
client/pmix_client.c at line 562</i></p>
<p><i>Abort(1090831) on node 0 (rank 0 in comm 0): Fatal error in
PMPI_Init_thread: Other MPI error, error stack:</i><i><br>
</i><i>MPIR_Init_thread(159): </i><i><br>
</i><i>MPID_Init(509).......: </i><i><br>
</i><i>MPIR_pmi_init(92)....: PMIX_Init returned -46 </i><i><br>
</i><i>[dcs135:2312190:0:2312190] Caught signal 11 (Segmentation
fault: address not mapped to object at address (nil))</i><i><br>
</i></p>
<p>Then I switched to pmi2 but make keeps telling me undefined
reference to PMI2 library. (actually I couldn't find the pmi2
libraries either.)</p>
<p>Then I used ``--with-pmi=slurm``, and it turned out that I
couldn't locate the Slurm header files. I guess I don't have the
permission to access them.</p>
<p>I was wondering if it is still possible for me to build a usable
MPICH as a user? If yes, how can I do to have the PMI work?<br>
</p>
<p>Thanks!</p>
Feimi
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