MPICH does not need to use Spectrum MPI's libraries. Are you sure your application isn't actually linked against Spectrum MPI and not MPICH? Ken On 9/20/21, 6:33 PM, "Feimi Yu via discuss" <[email protected]> wrote: Thank you for the hint! I finally got my job running on my own MPI build. Just out of curious: Actually, I searched this libmpiprofilesupport library before and discovered that it is specific to Spectrum MPI so I didn't go further. But MPICH just ran magically after I load Spectrum MPI and have the Spectrum MPI lib path in $LD_LIBRARY_PATH. Why does MPICH have to use Spectrum MPI's libraries? Thanks! Feimi On 9/19/2021 1:57 PM, Zhou, Hui wrote: > ./step-17.release: error while loading shared libraries: libmpiprofilesupport.so.3: cannot open shared object file: No such file or directory This is complaining about cannot finding a dynamic library (that is linked in your binary) on the compute node. Make sure the path to that library is in the LD_LIBRARY_PATH. ________________________________________ From: Feimi Yu <[email protected]> <mailto:[email protected]> Sent: Saturday, September 18, 2021 9:13 PM To: Zhou, Hui <[email protected]> <mailto:[email protected]>; [email protected] <[email protected]> <mailto:[email protected]> Subject: Re: [mpich-discuss] Installing MPICH on clusters Hi Hui, Thank you for the response! Here is the Slurm batch file I used to run a program with MPICH configured with Hydra: #!/bin/bash #SBATCH --job-name=5e-7 #SBATCH --partition=el8 #SBATCH --time 6:00:00 #SBATCH --ntasks 40 #SBATCH --nodes 1 #SBATCH --gres=gpu:4 date export LD_LIBRARY_PATH=/gpfs/u/home/CFSI/CFSIfmyu/barn-shared/dcs-rh8/mpich-build/lib:$MPI_ROOT:$LD_LIBRARY_PATH srun --mpi=mpichmx hostname -s | sort -u > /tmp/hosts.$SLURM_JOB_ID awk "{ print \$0 \":40\"; }" /tmp/hosts.$SLURM_JOB_ID >/tmp/tmp.$SLURM_JOB_ID mv /tmp/tmp.$SLURM_JOB_ID ./hosts.$SLURM_JOB_ID /gpfs/u/home/CFSI/CFSIfmyu/barn-shared/dcs-rh8/mpich-build/bin/mpiexec -f ./hosts.$SLURM_JOB_ID -np $SLURM_NPROCS ./step-17.release date And the error message is: ./step-17.release: error while loading shared libraries: libmpiprofilesupport.so.3: cannot open shared object file: No such file or directory I was not sure if this is related to a network problem because the clusters use Infiniband. Running "/sbin/ifconfig" gives ib0, ib1, ib2 and ib3. I tried the option "-iface ib0" and the error message became: [mpiexec@dcs176] HYDU_sock_get_iface_ip (utils/sock/sock.c:451): unable to find interface ib0 [mpiexec@dcs176] HYDU_sock_create_and_listen_portstr (utils/sock/sock.c:496): unable to get network interface IP [mpiexec@dcs176] HYD_pmci_launch_procs (pm/pmiserv/pmiserv_pmci.c:79): unable to create PMI port [mpiexec@dcs176] main (ui/mpich/mpiexec.c:322): process manager returned error launching processes Specifying ib1-ib3 gives similar results. Thanks! Feimi On 9/17/21 7:57 PM, Zhou, Hui wrote: Hi Feimi, Hydra should be able to work with slurm. How are you launching the job and what is the failure message? -- Hui Zhou ________________________________________ From: Feimi Yu via discuss <[email protected]> <mailto:[email protected]> Sent: Friday, September 17, 2021 10:55 AM To: [email protected] <[email protected]> <mailto:[email protected]> Cc: Feimi Yu <[email protected]> <mailto:[email protected]> Subject: [mpich-discuss] Installing MPICH on clusters Hi, 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: 1. Build with Hydra PM. I could not launch a job with Hydra at all. 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: srun --mpi=list gives following: srun: mpi/mpichgm srun: mpi/mpichmx srun: mpi/none srun: mpi/mvapich srun: mpi/openmpi srun: mpi/pmi2 srun: mpi/lam srun: mpi/mpich1_p4 srun: mpi/mpich1_shmem 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: [dcs135:2312190] PMIX ERROR: NOT-FOUND in file client/pmix_client.c at line 562 Abort(1090831) on node 0 (rank 0 in comm 0): Fatal error in PMPI_Init_thread: Other MPI error, error stack: MPIR_Init_thread(159): MPID_Init(509).......: MPIR_pmi_init(92)....: PMIX_Init returned -46 [dcs135:2312190:0:2312190] Caught signal 11 (Segmentation fault: address not mapped to object at address (nil)) Then I switched to pmi2 but make keeps telling me undefined reference to PMI2 library. (actually I couldn't find the pmi2 libraries either.) 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. 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? Thanks! Feimi