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Subject: Re: [OMPI users] MPI_Alltoallv function crashes when np > 100
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2011-05-20 07:26:19


I missed this email in my INBOX, sorry.

Can you be more specific about what exact error is occurring? You just say that the application crashes...? Please send all the information listed here:

    http://www.open-mpi.org/community/help/

On Apr 26, 2011, at 10:51 PM, ÃÏÏܾü wrote:

> It seems that the const variable SOMAXCONN who used by listen() system call causes this problem. Can anybody help me resolve this question?
>
> 2011/4/25 ÃÏÏܾü <xjun.meng_at_[hidden]>
> Dear all,
>
> As I mentioned, when I mpiruned an application with the parameter "np = 150(or bigger)", the application who used the MPI_Alltoallv function would carsh. The problem would recur no matter how many nodes we used.
>
> The edition of OpenMPI: 1.4.1 or 1.4.3
> The OS: linux redhat 2.6.32
>
> BTW, my nodes had enough memory to run the application, and the MPI_Alltoall function worked well at my environment.
> Did anybody meet the same problem? Thanks.
>
>
> Best Regards
>
>
>
>
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-- 
Jeff Squyres
jsquyres_at_[hidden]
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