[mvapich-discuss] Segmentation fault while running application

[Hari Subramoni]

Hello Chaitra,

>From the backtrace it seems that the failure (possibly a double free) is
happening in the application code. You mentioned that the Graph500 is a
tuned version. Does this mean that you have made local code changes to it?
If there are, could you try using an unmodified version of Graph500 and see
if the same failure happens?

Regards,
Hari.


On Tue, Aug 5, 2014 at 1:57 PM, Chaitra Kumar <chaitragkumar at gmail.com>
wrote:

> Hi Team,
>
> I am trying to run Graph500 (tuned mpi version) on MVAPICH2-2.0. The
> machine has infiniband.
>
> I am using following configuration to build MVAPICH2 (have enabled
> debugging options):
>
> ./configure --prefix=/home/padmanac/mvapich2 --enable-cxx
> --enable-threads=multiple --with-device=ch3:mrail --with-rdma=gen2
> --disable-fast --enable-g=all --enable-error-messages=all
>
> The command which I am using is to launch Graph500 is:
> mpiexec -f hostfile -np 50  -env MV2_DEBUG_CORESIZE=unlimited -env
> MV2_DEBUG_SHOW_BACKTRACE=1  -env MV2_ENABLE_AFFINITY=0
> ./graph500_mpi_custom_50 29
>
> This command always result in segmentation fault. From the coredump i have
> got the backtrace.
>
> Please find the trace below:
>
> (gdb) bt
> #0  0x00007f38f84b52dc in _int_free ()
>    from /home/padmanac/mvapich2/lib/libmpich.so.12
> #1  0x00007f38f84b3a96 in free ()
>    from /home/padmanac/mvapich2/lib/libmpich.so.12
> #2  0x00000000004054e5 in xfree ()
> #3  0x000000000040ca10 in bitmap::clear() () at bitmap.cpp:54
> #4  0x0000000000415cda in run_bfs(long, long*, bfs_settings const&) ()
>     at bfs_custom.cpp:2036
> #5  0x0000000000403a5d in main () at main.cpp:370
>
>
> Please let me know how to solve this? Am I missing some configuration flag?
>
> Thanks in advance.
>
> Regards,
> Chaitra
>
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