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Subject: Re: [OMPI users] MPI_Alltoallv function crashes when np > 100
From: ÃÏÏܾü (xjun.meng_at_[hidden])
Date: 2011-04-26 22:51:21

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