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Subject: Re: [OMPI users] execution problem on remote nodes with MPI 1.3
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2010-01-13 07:58:24


Do you get a core dump of your application on the 2nd node? You might want to look at it and see exactly where the seg fault occurred. The stack trace that is shown below does not include any MPI functions, suggesting that this might be an error in your application.

On Jan 13, 2010, at 6:06 AM, <gina.scorre1979_at_[hidden]> wrote:

> I've a problem with a parallel execution of my personal mpi program.
>
> When I execute it on localhost it works fine, but when I try to run it with two
> machines I receive this error:
>
> pietro_at_pietro-laptop:~/Scrivania$ mpirun --
> prefix /home/user/MPI/ -np 4 --host user_at_xxx.yyy.zzz.kkk algo1.exe a2.txt b2.
> txt
> user_at_xxx.yyy.zzz.kkk's password:
> [user:04778] *** Process received signal
> ***
> [user:04778] Signal: Segmentation fault (11)
> [user:04778] Signal code:
> Address not mapped (1)
> [user:04778] Failing at address: (nil)
> [user:04778] [ 0]
> [0xe10410]
> [user:04778] [ 1] algo1.exe(main+0xb9) [0x8048c8d]
> [user:04778] [ 2]
> /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe6) [0xba5b56]
> [user:04778] [
> 3] algo1.exe [0x8048b41]
> [user:04778] *** End of error message ***
>
> --------------------------------------------------------------------------
>
> mpirun noticed that process rank 0 with PID 4778 on node user_at_xxx.yyy.zzz.kkk
> exited on signal 11 (Segmentation fault).
>
> --------------------------------------------------------------------------
>
>
> where:
> -> xxx.yyy.zzz.kkk is the IP of the other machine.
> -> /home/user/MPI/
> is the installation path of MPI 1.3 of the other machine
>
> I hope that someone
> can give me a some advices to solve this problem.
> Thanks for your time
> _______________________________________________
> users mailing list
> users_at_[hidden]
> http://www.open-mpi.org/mailman/listinfo.cgi/users
>

-- 
Jeff Squyres
jsquyres_at_[hidden]