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Subject: Re: [OMPI users] MPI can not open file?
From: Peter Kjellstrom (cap_at_[hidden])
Date: 2009-04-07 11:31:10


On Tuesday 07 April 2009, Bernhard Knapp wrote:
> Hi
>
> I am trying to get a parallel job of the gromacs software started. MPI
> seems to boot fine but unfortunately it seems not to be able to open a
> specified file although it is definitly in the directory where the job
> is started.

Do all the nodes (in your machinefile) see the same filesystem(s)?

Have you tried a trivial mpi-program (like MPI_init, open("...), MPI_fin..)?

I have compiled and executed gromacs (4.0.2) sucessfully with several OpenMPI
versions.

/Peter

> I also changed the file permissions to 777 but it does not
> affect the result. Any suggestions?
>
> cheers
> Bernhard
...
> Program mdrun, VERSION 4.0.3
> Source code file: gmxfio.c, line: 736
>
> Can not open file:
> 1fyt_PKYVKQNTLELAT_bindingRegionsOnly.md.tpr