[mvapich-discuss] MVAPICH2-2.3b hwloc topology issue

[Sourav Chakraborty]

Hi Doug,

The attached patch should fix the issue for Hydra. It'll be included in the
upcoming MVAPICH2-2.3rc1 release.

Thanks,
Sourav


On Tue, Nov 28, 2017 at 3:59 PM, Doug Johnson <djohnson at osc.edu> wrote:

> Hi Sourav,
>
> I do not see the problem when using mpirun_rsh, but I do when using
> mpiexec hydra.
>
> Doug
>
> Sourav Chakraborty <chakraborty.52 at buckeyemail.osu.edu> writes:
>
> > Hi Doug,
> >
> > The xml file is created by MVAPICH2 during startup. The error could be
> due to some permission issue while
> > accessing the /tmp directory.
> >
> > We tried out the same build options with 2.3b on Owens but were not able
> to reproduce the issue. Please let us
> > know if the error persists.
> >
> > -bash-4.2$ ./bin/mpichversion
> > MVAPICH2 Version: 2.3b
> > MVAPICH2 Release date: Thu Aug 10 22:00:00 EST 2017
> > MVAPICH2 Device: ch3:mrail
> > MVAPICH2 configure: --prefix=/users/PZS0622/osc1006/devel/mvapich2/install
> --enable-shared --with-mpe
> > --enable-romio --enable-mpit-pvars=mv2 --disable-option-checking
> --with-file-system=ufs+nfs+gpfs
> > --with-pbs=/opt/torque --with-pbs-lib=/opt/torque/lib64
> --with-pbs-include=/opt/torque/include CC=icc CXX=icpc
> > FC=ifort
> > MVAPICH2 CC: icc -DNDEBUG -DNVALGRIND -O2
> > MVAPICH2 CXX: icpc -DNDEBUG -DNVALGRIND -O2
> > MVAPICH2 F77: ifort -L/lib -L/lib -O2
> > MVAPICH2 FC: ifort -O2
> >
> > -bash-4.2$ ./bin/mpirun_rsh -np 56 -hostfile $PBS_NODEFILE
> MV2_HCA_AWARE_PROCESS_MAPPING=0
> > ./libexec/osu-micro-benchmarks/mpi/startup/osu_init
> > # OSU MPI Init Test v5.3.2
> > nprocs: 56, min: 885 ms, max: 934 ms, avg: 905 ms
> > -bash-4.2$
> >
> > Thanks,
> > Sourav
> >
> > On Mon, Nov 27, 2017 at 2:26 PM, Doug Johnson <djohnson at osc.edu> wrote:
> >
> >  Hi,
> >
> >  I'm testing 2.3b and have encountered a problem with the new hwloc
> >  topology routines in src/mpid/ch3/channels/common/
> src/affinity/hwloc_bind.c.
> >  Simple tests fail to start, hanging due to missing files under /tmp.
> >  The strace command shows the following.
> >
> >  access("/tmp/mv2-hwloc-kvs_28818_0-o0433.ten.osc.edu-6758.xml", F_OK)
> = -1 ENOENT (No such file or
> >  directory)
> >
> >  The xml file is missing on all the nodes where I'm attempting to launch
> >  the job. Are there possibly dependencies that I'm missing for this file
> >  to be created successfully? (don't have time to step through the code.)
> >
> >  I was able to continue my tests successfully by setting
> >  MV2_BCAST_HWLOC_TOPOLOGY=0.
> >
> >  Output from mpichversion looks like the following.
> >
> >  MVAPICH2 Version: 2.3b
> >  MVAPICH2 Release date: Thu Aug 10 22:00:00 EST 2017
> >  MVAPICH2 Device: ch3:mrail
> >  MVAPICH2 configure: --prefix=/opt/mvapich2/intel/17.0/2.3b
> --enable-shared --with-mpe --enable-romio
> >  --enable-mpit-pvars=mv2 --disable-option-checking
> --with-file-system=ufs+nfs+gpfs --with-pbs=/opt/torque
> >  --with-pbs-lib=/opt/torque/lib64 --with-pbs-include=/opt/torque/include
> >  MVAPICH2 CC: icc -DNDEBUG -DNVALGRIND -O2
> >  MVAPICH2 CXX: icpc -DNDEBUG -DNVALGRIND -O2
> >  MVAPICH2 F77: ifort -L/lib -L/lib -O2
> >  MVAPICH2 FC: ifort -O2
> >
> >  Best,
> >  Doug
> >  _______________________________________________
> >  mvapich-discuss mailing list
> >  mvapich-discuss at cse.ohio-state.edu
> >  http://mailman.cse.ohio-state.edu/mailman/listinfo/mvapich-discuss
>
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