[gmx-users] What does it mean by saying mca: base: component_find: unable to open....

[Mark Abraham]

On 06/17/2011 05:15 PM, xiaowu759 wrote:
> Dear gmxers,
> We have installed gmx-4.5.4 on one cluster from the source, without 
> any errors. I can also run mdrun in non-parallel way successful. 
> However, when I run mdrun in parallel way as follows:
>
> mpimdrun -h
>
> some messages are given:
>
> [node10:03709] mca: base: component_find: unable to open 
> /public/software/mpi/openmpi1.4-gnu/lib/openmpi/mca_btl_ofud: perhaps 
> a missing symbol, or compiled for a different version of Open MPI? 
> (ignored)
>
> [node10:03709] mca: base: component_find: unable to open 
> /public/software/mpi/openmpi1.4-gnu/lib/openmpi/mca_btl_openib: 
> perhaps a missing symbol, or compiled for a different version of Open 
> MPI? (ignored)
>
> NNODES=1, MYRANK=0, HOSTNAME=node10
>
> What does it mean by saying  so? Could you give me some hints for 
> dealing with it?

Either linking to MPI isn't working, or MPI isn't configured correctly. 
Try an MPI test program, or using static linking.

Mark
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