The first one is the critical one. If the build was not configured --with-cuda, then it's unlikely cuda-aware MPI is supported.
On Tue, Oct 30, 2018, 12:10 PM Andrei Berceanu <andreicberce...@gmail.com> wrote: > Thanks! I tried both and > ompi_info -a | grep "\-with\-cuda" returns nothing, while > ompi_info -a | grep "xtensions" returns > MPI extensions: affinity, cuda > > It seems the two outputs are in conflict, what does that mean? > > > On Tue, Oct 30, 2018 at 8:50 PM Akshay Venkatesh <akshay.v.3...@gmail.com> > wrote: > >> Andrei, >> >> I generally check with one of these two: >> >> $ ompi_info -a | grep "\-with\-cuda" >> Configure command line: '--prefix=$HOME/ompi/build-cuda' >> '--enable-mpirun-prefix-by-default' '--with-cuda=/usr/local/cuda' >> '--with-ucx=$HOME/ucx-github/build' >> '--with-ucx-libdir=$HOME/ucx-github/build/lib' '--enable-debug' >> '--enable-mem-debug' '--enable-mpi-fortran=no' '--disable-oshmem' >> '--enable-install-libpmix' '--with-ompi-pmix-rte' >> >> $ ompi_info -a | grep "xtensions" >> MPI extensions: affinity, cuda, pcollreq >> >> >> On Tue, Oct 30, 2018 at 11:40 AM Andrei Berceanu < >> andreicberce...@gmail.com> wrote: >> >>> Hi all, >>> >>> I am using openmpi@3.1.2 on an Ubuntu@16.04.5 box, how can I check if >>> it has CUDA support or not? >>> >>> Best, >>> Andrei >>> _______________________________________________ >>> users mailing list >>> users@lists.open-mpi.org >>> https://lists.open-mpi.org/mailman/listinfo/users >> >> >> >> -- >> -Akshay >> NVIDIA >> _______________________________________________ >> users mailing list >> users@lists.open-mpi.org >> https://lists.open-mpi.org/mailman/listinfo/users > > _______________________________________________ > users mailing list > users@lists.open-mpi.org > https://lists.open-mpi.org/mailman/listinfo/users
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