On Wed, 20 Feb 2019 10:46:10 -0500 Adam LeBlanc <alebl...@iol.unh.edu> wrote:
> Hello, > > When I do a run with OpenMPI v4.0.0 on Infiniband with this command: > mpirun --mca btl_openib_warn_no_device_params_found 0 --map-by node > --mca orte_base_help_aggregate 0 --mca btl openib,vader,self --mca > pml ob1 --mca btl_openib_allow_ib 1 -np 6 > -hostfile /home/aleblanc/ib-mpi-hosts IMB-MPI1 > > I get this error: ... > # Benchmarking Reduce_scatter ... > 2097152 20 8738.08 9340.50 9147.89 > [pandora:04500] *** Process received signal *** > [pandora:04500] Signal: Segmentation fault (11) This is very likely a bug in IMB not in OpenMPI. It's been discussed on the list before, thread name: MPI_Reduce_Scatter Segmentation Fault with Intel 2019 Update 1 Compilers on OPA-1... You can work around by using an older IMB version (the bug is in the newer/est version). /Peter K _______________________________________________ users mailing list users@lists.open-mpi.org https://lists.open-mpi.org/mailman/listinfo/users
