Did you remember to build the Slurm pmi and pmi2 libraries? They aren't built by default - IIRC, you have to manually go into a subdirectory and do a "make install" to have them built and installed. You might check the Slurm documentation for details.
You also might need to add a --with-pmi-libdir=... to the OMPI configure line - IIRC, Slurm puts those libraries in some subdirectory that may not be immediately obvious. > On Dec 20, 2020, at 6:52 AM, Philipp Heckmann via users > <users@lists.open-mpi.org> wrote: > > Hello everyone, > > > I'm new to this list and as well to OpenMPI. I hope this is not a stupid > question: > > I use following machine: > Operating System: CentOS Linux 7 (Core) > CPE OS Name: cpe:/o:centos:centos:7 > Kernel: Linux 3.10.0-1127.19.1.el7.x86_64 > Architecture: x86-64 > > In the FAQ I found this post: > > Does Open MPI support "srun -n X my_mpi_application"? > > This is exactly what I want to achieve, starting MPI-Jobs using slurms > run or sbatch without the mpirun command. So I installed slurm 20.02.5 > and now I tried to configure OpenMPI 3.1.6 with ./configure ./configure > —with-pmi=/usr > > > and this is the output: > > checking if user requested PMI support... yes > checking for pmi.h in /usr... not found > checking for pmi.h in /usr/include... found > checking pmi.h usability... yes > checking pmi.h presence... yes > checking for pmi.h... yes > checking for libpmi in /usr/lib... checking for libpmi in /usr/lib64... > not found > checking for pmi2.h in /usr... not found > checking for pmi2.h in /usr/include... found > checking pmi2.h usability... yes > checking pmi2.h presence... yes > checking for pmi2.h... yes > checking for libpmi2 in /usr/lib... checking for libpmi2 in > /usr/lib64... not found > checking can PMI support be built... no > configure: WARNING: PMI support requested (via --with-pmi) but neither > pmi.h > configure: WARNING: nor pmi2.h were found under locations: > configure: WARNING: /usr > configure: WARNING: /usr/slurm > configure: WARNING: Specified path: /usr > configure: WARNING: OR neither libpmi nor libpmi2 were found under: > configure: WARNING: /lib > configure: WARNING: /lib64 > configure: WARNING: Specified path: > configure: error: Aborting > > So it finds the pmi.h and pmi2.h but not the libpmi and libpmi2. Is > there a way to install pmi2 first? Where do I find this? Slurm is > installed in /usr/local but I don't find the files libpmi or libpmi2 > anywhere on the machine. > Pmix is not necessary because the cluster is quite small with 5 nodes > with 64 cpus in total. > > Any help is appreciated. Thanks in advance and all the Best! > > Philipp Heckmann > > > > > > >
