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Subject: Re: [OMPI devel] Intermittent mpirun crash?
From: Rolf vandeVaart (rvandevaart_at_[hidden])
Date: 2014-01-30 11:56:55


I did build with --enable-debug. And I experimented with sending signal 11 to mpirun to see what I get out. In that case, I get a nice backtrace.
Weird.

[rvandevaart_at_drossetti-ivy0 intel_tests]$ mpirun -np 2 sleep 20
[drossetti-ivy0:14033] *** Process (mpirun)received signal ***
[drossetti-ivy0:14033] Signal: Segmentation fault (11)
[drossetti-ivy0:14033] Signal code: (0)
[drossetti-ivy0:14033] Failing at address: 0x7e5500005ace
[drossetti-ivy0:14033] End of signal information - not sleeping
[drossetti-ivy0:14033] *** Return value from opal_backtrace_buffer is 0 ***
[drossetti-ivy0:14033] [ 0] /lib64/libpthread.so.0(+0xf500) [0x7f27b2fd8500]
[drossetti-ivy0:14033] [ 1] /lib64/libc.so.6(__poll+0x53) [0x7f27b2d15293]
[drossetti-ivy0:14033] [ 2] /geppetto/home/rvandevaart/ompi/ompi-v1.7/64-nocuda/lib/libopen-pal.so.6(+0x963e5) [0x7f27b3d283e5]
[drossetti-ivy0:14033] [ 3] /geppetto/home/rvandevaart/ompi/ompi-v1.7/64-nocuda/lib/libopen-pal.so.6(opal_libevent2021_event_base_loop+0x26e) [0x7f27b3d1cdfc]
[drossetti-ivy0:14033] [ 4] mpirun(orterun+0x137d) [0x4052b6]
[drossetti-ivy0:14033] [ 5] mpirun(main+0x20) [0x4037b4]
[drossetti-ivy0:14033] [ 6] /lib64/libc.so.6(__libc_start_main+0xfd) [0x7f27b2c54cdd]
[drossetti-ivy0:14033] [ 7] mpirun() [0x4036d9]
[drossetti-ivy0:14033] *** End of error message ***
[rvandevaart_at_drossetti-ivy0 intel_tests]$
_____________________
From: devel [devel-bounces_at_[hidden]] On Behalf Of Ralph Castain [rhc_at_[hidden]]
Sent: Thursday, January 30, 2014 11:51 AM
To: Open MPI Developers
Subject: Re: [OMPI devel] Intermittent mpirun crash?

Huh - not much info there, I'm afraid. I gather you didn't build this with --enable-debug?

On Jan 30, 2014, at 8:26 AM, Rolf vandeVaart <rvandevaart_at_[hidden]> wrote:

> I am seeing this happening to me very intermittently. Looks like mpirun is getting a SEGV. Is anyone else seeing this?
> This is 1.7.4 built yesterday. (Note that I added some stuff to what is being printed out so the message is slightly different than 1.7.4 output)
>
> mpirun - -np 6 -host drossetti-ivy0,drossetti-ivy1,drossetti-ivy2,drossetti-ivy3 --mca btl_openib_warn_default_gid_prefix 0 -- `pwd`/src/MPI_Waitsome_p_c
> MPITEST info (0): Starting: MPI_Waitsome_p: Persistent Waitsome using two nodes
> MPITEST_results: MPI_Waitsome_p: Persistent Waitsome using two nodes all tests PASSED (742)
> [drossetti-ivy0:10353] *** Process (mpirun)received signal ***
> [drossetti-ivy0:10353] Signal: Segmentation fault (11)
> [drossetti-ivy0:10353] Signal code: Address not mapped (1)
> [drossetti-ivy0:10353] Failing at address: 0x7fd31e5f208d
> [drossetti-ivy0:10353] End of signal information - not sleeping
> gmake[1]: *** [MPI_Waitsome_p_c] Segmentation fault (core dumped)
> gmake[1]: Leaving directory `/geppetto/home/rvandevaart/public/ompi-tests/trunk/intel_tests'
>
> (gdb) where
> #0 0x00007fd31f620807 in ?? () from /lib64/libgcc_s.so.1
> #1 0x00007fd31f6210b9 in _Unwind_Backtrace () from /lib64/libgcc_s.so.1
> #2 0x00007fd31fb2893e in backtrace () from /lib64/libc.so.6
> #3 0x00007fd320b0d622 in opal_backtrace_buffer (message_out=0x7fd31e5e33a0, len_out=0x7fd31e5e33ac)
> at ../../../../../opal/mca/backtrace/execinfo/backtrace_execinfo.c:57
> #4 0x00007fd320b0a794 in show_stackframe (signo=11, info=0x7fd31e5e3930, p=0x7fd31e5e3800) at ../../../opal/util/stacktrace.c:354
> #5 <signal handler called>
> #6 0x00007fd31e5f208d in ?? ()
> #7 0x00007fd31e5e46d8 in ?? ()
> #8 0x000000000000c2a8 in ?? ()
> #9 0x0000000000000000 in ?? ()
>
>
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