Pl unsubscribe me. On Fri, 5 Mar, 2021, 6:02 AM Gilles Gouaillardet via users, < users@lists.open-mpi.org> wrote:
> On top of XPMEM, try to also force btl/vader with > mpirun --mca pml ob1 --mca btl vader,self, ... > > On Fri, Mar 5, 2021 at 8:37 AM Nathan Hjelm via users > <users@lists.open-mpi.org> wrote: > > > > I would run the v4.x series and install xpmem if you can ( > http://github.com/hjelmn/xpmem). You will need to build with > —with-xpmem=/path/to/xpmem to use xpmem otherwise vader will default to > using CMA. This will provide the best possible performance. > > > > -Nathan > > > > On Mar 4, 2021, at 5:55 AM, Raut, S Biplab via users < > users@lists.open-mpi.org> wrote: > > > > [AMD Official Use Only - Internal Distribution Only] > > > > It is a single node execution, so it should be using shared memory > (vader). > > > > With Regards, > > S. Biplab Raut > > > > From: Heinz, Michael William <michael.william.he...@cornelisnetworks.com > > > > Sent: Thursday, March 4, 2021 5:17 PM > > To: Open MPI Users <users@lists.open-mpi.org> > > Cc: Raut, S Biplab <biplab.r...@amd.com> > > Subject: Re: [OMPI users] Stable and performant openMPI version for > Ubuntu20.04 ? > > > > [CAUTION: External Email] > > > > What interconnect are you using at run time? That is, are you using > Ethernet or InfiniBand or Omnipath? > > > > Sent from my iPad > > > > > > > > On Mar 4, 2021, at 5:05 AM, Raut, S Biplab via users < > users@lists.open-mpi.org> wrote: > > > > > > [AMD Official Use Only - Internal Distribution Only] > > > > After downloading a particular openMPI version, let’s say v3.1.1 from > https://download.open-mpi.org/release/open-mpi/v3.1/openmpi-3.1.1.tar.gz > , I follow the below steps. > > ./configure --prefix="$INSTALL_DIR" --enable-mpi-fortran > --enable-mpi-cxx --enable-shared=yes --enable-static=yes > --enable-mpi1-compatibility > > make -j > > make install > > export PATH=$INSTALL_DIR/bin:$PATH > > export LD_LIBRARY_PATH=$INSTALL_DIR/lib:$LD_LIBRARY_PATH > > Additionally, I also install libnuma-dev on the machine. > > > > For all the machines having Ubuntu 18.04 and 19.04, it works correctly > and results in expected performance/GFLOPS. > > But, when OS is changed to Ubuntu 20.04, then I start getting the issues > as mentioned in my original/previous mail below. > > > > With Regards, > > S. Biplab Raut > > > > From: users <users-boun...@lists.open-mpi.org> On Behalf Of John Hearns > via users > > Sent: Thursday, March 4, 2021 1:53 PM > > To: Open MPI Users <users@lists.open-mpi.org> > > Cc: John Hearns <hear...@gmail.com> > > Subject: Re: [OMPI users] Stable and performant openMPI version for > Ubuntu20.04 ? > > > > [CAUTION: External Email] > > How are you installing the OpenMPI versions? Are you using packages > which are distributed by the OS? > > > > It might be worth looking at using Easybuid or Spack > > https://docs.easybuild.io/en/latest/Introduction.html > > https://spack.readthedocs.io/en/latest/ > > > > > > On Thu, 4 Mar 2021 at 07:35, Raut, S Biplab via users < > users@lists.open-mpi.org> wrote: > > > > [AMD Official Use Only - Internal Distribution Only] > > > > Dear Experts, > > Until recently, I was using openMPI3.1.1 to run > single node 128 ranks MPI application on Ubuntu18.04 and Ubuntu19.04. > > But, now the OS on these machines are upgraded to Ubuntu20.04, and I > have been observing program hangs with openMPI3.1.1 version. > > So, I tried with openMPI4.0.5 version – The program ran properly without > any issues but there is a performance regression in my application. > > > > Can I know the stable openMPI version recommended for Ubuntu20.04 that > has no known regression compared to v3.1.1. > > > > With Regards, > > S. Biplab Raut > > > > >
