It looks like the segfault was reported from the MXM library. But as you mentioned, MVAPICH works fine. Thus, we should verify whether this is an MPICH issue or a MXM issue. I will try to reproduce the issue on our test platform and keep you updated. Could you please confirm if this is your configure ? MPICH version: 3.2.1 ./configure --prefix=/opt/mpich-install --with-device=ch3:nemesis:mxm --with-mxm=/opt/hpcx-v2.0.0-gcc-inbox-redhat6.9-x86_64/mxm Meanwhile, could you please also try mpich-3.3a3 (see http://www.mpich.org/downloads/) ? It includes a few bug fixes. Thanks, Min On 2018/01/26 16:47, [email protected] wrote:

I tried using OSU benchmark with OSU MVAPICH2 and that worked fine, was able to verify infiniband is being used.  However, there is a segmentation fault when using MPICH, see below.  When re-compiled MPICH without MXM, the OSU benchmark works as expected as well as reports slower speed of 1Gb ethernet network...

 It seems to be related to MXM, so perhaps I need to contact Mellanox regarding this?

Thanks

$ which mpirun /opt/mpich-install/bin/mpirun

$ mpirun -np 2 -hostfile /opt/machinelist ./osu_bibw [1517005194.381407] [n001:18086:0]         sys.c:744  MXM  WARN Conflicting CPU frequencies detected, using: 2101.00 [1517005194.513782] [n002:32344:0]         sys.c:744  MXM  WARN Conflicting CPU frequencies detected, using: 2101.00 [1517005194.599025] [n002:32344:0]    proto_ep.c:179  MXM  WARN tl dc is requested but not supported [1517005194.655493] [n001:18086:0]    proto_ep.c:179  MXM  WARN tl dc is requested but not supported # OSU MPI Bi-Directional Bandwidth Test v5.4.0 # Size      Bandwidth (MB/s) 1                       1.64 2                       4.88 4                       9.84 8                      19.83 16                     39.48 32                     76.25 64                    150.78 [n002:32344:0] Caught signal 11 (Segmentation fault) ==== backtrace ====  2 0x000000000005767c mxm_handle_error() /scrap/jenkins/workspace/hpc-power-pack/label/r-vmb-rhel6-u9-x86-64-MOFED-CHECKER/hpcx_root/src/hpcx-v2.0.0-gcc-inbox-redhat6.9-x86_64/mxm-v3.6/src/mxm/util/debug/debug.c:641  3 0x00000000000577ec mxm_error_signal_handler() /scrap/jenkins/workspace/hpc-power-pack/label/r-vmb-rhel6-u9-x86-64-MOFED-CHECKER/hpcx_root/src/hpcx-v2.0.0-gcc-inbox-redhat6.9-x86_64/mxm-v3.6/src/mxm/util/debug/debug.c:616  4 0x0000003550432510 killpg()  ??:0  5 0x0000000000056258 mxm_mpool_put() /scrap/jenkins/workspace/hpc-power-pack/label/r-vmb-rhel6-u9-x86-64-MOFED-CHECKER/hpcx_root/src/hpcx-v2.0.0-gcc-inbox-redhat6.9-x86_64/mxm-v3.6/src/mxm/util/datatype/mpool.c:210  6 0x00000000000689ce mxm_cib_ep_poll_tx() /scrap/jenkins/workspace/hpc-power-pack/label/r-vmb-rhel6-u9-x86-64-MOFED-CHECKER/hpcx_root/src/hpcx-v2.0.0-gcc-inbox-redhat6.9-x86_64/mxm-v3.6/src/mxm/tl/cib/cib_progress.c:527  7 0x000000000006913d mxm_cib_ep_progress() /scrap/jenkins/workspace/hpc-power-pack/label/r-vmb-rhel6-u9-x86-64-MOFED-CHECKER/hpcx_root/src/hpcx-v2.0.0-gcc-inbox-redhat6.9-x86_64/mxm-v3.6/src/mxm/tl/cib/cib_progress.c:552  8 0x000000000004268a mxm_notifier_chain_call() /scrap/jenkins/workspace/hpc-power-pack/label/r-vmb-rhel6-u9-x86-64-MOFED-CHECKER/hpcx_root/src/hpcx-v2.0.0-gcc-inbox-redhat6.9-x86_64/mxm-v3.6/src/./mxm/util/datatype/callback.h:74  9 0x000000000004268a mxm_progress_internal() /scrap/jenkins/workspace/hpc-power-pack/label/r-vmb-rhel6-u9-x86-64-MOFED-CHECKER/hpcx_root/src/hpcx-v2.0.0-gcc-inbox-redhat6.9-x86_64/mxm-v3.6/src/mxm/core/mxm.c:64 10 0x000000000004268a mxm_progress() /scrap/jenkins/workspace/hpc-power-pack/label/r-vmb-rhel6-u9-x86-64-MOFED-CHECKER/hpcx_root/src/hpcx-v2.0.0-gcc-inbox-redhat6.9-x86_64/mxm-v3.6/src/mxm/core/mxm.c:346 11 0x0000000000177a49 MPID_nem_mxm_poll()  ??:0 12 0x0000000000169be8 MPIDI_CH3I_Progress()  ??:0 13 0x00000000000d0ba7 MPIR_Waitall_impl()  ??:0 14 0x00000000000d1308 PMPI_Waitall()  ??:0 15 0x0000000000401904 main() /opt/downloads/osu-micro-benchmarks-5.4/mpi/pt2pt/osu_bibw.c:146 16 0x000000355041ed1d __libc_start_main()  ??:0 17 0x0000000000401269 _start()  ??:0 ===================

===================================================================================

=   BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES =   PID 32344 RUNNING AT n002 =   EXIT CODE: 139 =   CLEANING UP REMAINING PROCESSES =   YOU CAN IGNORE THE BELOW CLEANUP MESSAGES ===================================================================================

[proxy:0:[email protected]] HYD_pmcd_pmip_control_cmd_cb (pm/pmiserv/pmip_cb.c:887): assert (!closed) failed [proxy:0:[email protected]] HYDT_dmxu_poll_wait_for_event (tools/demux/demux_poll.c:76): callback returned error status [proxy:0:[email protected]] main (pm/pmiserv/pmip.c:202): demux engine error waiting for event [[email protected]] HYDT_bscu_wait_for_completion (tools/bootstrap/utils/bscu_wait.c:76): one of the processes terminated badly; aborting [[email protected]] HYDT_bsci_wait_for_completion (tools/bootstrap/src/bsci_wait.c:23): launcher returned error waiting for completion [[email protected]] HYD_pmci_wait_for_completion (pm/pmiserv/pmiserv_pmci.c:218): launcher returned error waiting for completion [[email protected]] main (ui/mpich/mpiexec.c:340): process manager error waiting for completion

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