Yuval, Please refer to our debugging guide here: https://www.open-mpi.org/faq/?category=debugging <https://www.open-mpi.org/faq/?category=debugging>
As for me, I always use gdb attach (number 6 on the guide). You also want to compile Open MPI in debug build by configure flag —enable-debug. Arm > On Oct 10, 2018, at 6:39 AM, Yuval Shaia <yuval.sh...@oracle.com> wrote: > > Hello, > I'm currently working on a new RDMA device so that it will work with Open > MPI platform. > > During my work i came to a point where the program crashes but leaves not > enough information for me to find the root cause. > > I tried to run gdb with the command line (mpirun -np 2 ring_c) but > obviously that didn't help as it just tried to debug mpirun and not ring_c. > > Then i tried --debug option but it fails since it works with limited list > of debuggers which unfortunately are not available in Fedora repo. > > This is the (part of the) crash log i see when running ring_c: > [fc28-2:01086] *** Process received signal *** > [fc28-2:01086] Signal: Segmentation fault (11) > [fc28-2:01086] Signal code: Invalid permissions (2) > [fc28-2:01086] Failing at address: 0x211dfc0 > [fc28-2:01087] *** Process received signal *** > [fc28-2:01087] Signal: Segmentation fault (11) > [fc28-2:01087] Signal code: Invalid permissions (2) > [fc28-2:01087] Failing at address: 0x2656fc0 > [fc28-2:01087] [fc28-2:01086] [ 0] > /lib64/libpthread.so.0(+0x11fc0)[0x7f2dd089afc0] > [fc28-2:01086] [ 1] [0x211dfc0] > [fc28-2:01086] *** End of error message *** > [ 0] /lib64/libpthread.so.0(+0x11fc0)[0x7fcfc7553fc0] > [fc28-2:01087] [ 1] [0x2656fc0] > [fc28-2:01087] *** End of error message *** > ------------------------------------------------------- > Primary job terminated normally, but 1 process returned > a non-zero exit code. Per user-direction, the job has been aborted. > ------------------------------------------------------- > > And here are the command line parameters i'm using: > btl_base_verbose = 100 > btl_openib_verbose = 100 > btl = openib,self > btl_openib_receive_queues = P,4096,8,6,4 > btl_openib_cpc_include = rdmacm > > Appreciate any help here. > > Thanks, > Yuval > _______________________________________________ > devel mailing list > devel@lists.open-mpi.org > https://lists.open-mpi.org/mailman/listinfo/devel
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