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Subject: Re: [OMPI users] Segmentation fault (11) Address not mapped (1)
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2008-08-16 07:57:58


It's not entirely clear that this means that it is a bug in Open MPI
-- there's not really enough information here to say where the problem
is. All that is clear is that a seg fault is happening somewhere in
LAPACK.

FWIW, I don't see MPI in the call stack of the segv at all. This
doesn't definitively mean that MPI is not involved, but it does
suggest that the bug is elsewhere. You might want to run this under a
debugger or examine the generated corefiles to see exactly what the
problem was.

On Aug 15, 2008, at 1:03 PM, C.Y. Lee wrote:

> All,
>
> I had a similar problem as James described in an earlier message: http://www.open-mpi.org/community/lists/users/2008/07/6204.php
> While he was able to recompile openmpi to solve the problem, I had
> no luck with my RedHat Enterprise 5 system.
> Here are two other threads with similar issues regarding openmpi on
> Ubuntu and OSX which were solved: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/234837
> http://www.somewhereville.com/?cat=55
>
> Now...
> Here is my story:
> I had Quantum Espresso (QE) running without problem using openmpi.
> However, when I tried to recompile QE with a recompiled fftw-2.1.5,
> it compiled without any error. But when I ran QE, it gave me the
> error below:
>
> *** Process received signal ***
> Signal: Segmentation fault (11)
> Signal code: Address not mapped (1)
> Failing at address: 0x22071b70
> [ 0] /lib64/libpthread.so.0 [0x352420de70]
> [ 1] /usr/lib64/liblapack.so.3(dsytf2_+0xc43) [0x2aaaaac9f5e3]
> [ 2] /usr/lib64/liblapack.so.3(dsytrf_+0x407) [0x2aaaaaca0567]
> [ 3] /opt/espresso-4.0.1/bin/pw.x(mix_rho_+0x828) [0x5044b8]
> [ 4] /opt/espresso-4.0.1/bin/pw.x(electrons_+0xb37) [0x4eae47]
> [ 5] /opt/espresso-4.0.1/bin/pw.x(MAIN__+0xbf) [0x42b3af]
> [ 6] /opt/espresso-4.0.1/bin/pw.x(main+0xe) [0x6aad5e]
> [ 7] /lib64/libc.so.6(__libc_start_main+0xf4) [0x352361d8a4]
> [ 8] /opt/espresso-4.0.1/bin/pw.x [0x42b239]
> *** End of error message ***
>
> From what I read from the above links, it seems to be a bug in
> openmpi.
> Please share your thoughts on this, thank you!
>
> CY
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-- 
Jeff Squyres
Cisco Systems