[mpich-discuss] having problem running MPICH on multiple nodes

Lu, Huiwei huiweilu at mcs.anl.gov
Tue Nov 25 23:44:10 CST 2014


So the error only happens when there is communication.

It may be caused by IB as your guessed before. Could you try to reconfigure MPICH using "./configure --with-device=ch3:nemesis:tcp” and try again?

—
Huiwei

> On Nov 25, 2014, at 11:23 PM, Amin Hassani <ahassani at cis.uab.edu> wrote:
> 
> Yes it works. 
> output:
> 
> $ mpirun -hostfile hosts-hydra -np 2  test
> rank 1
> rank 0
> 
> 
> Amin Hassani,
> CIS department at UAB,
> Birmingham, AL, USA.
> 
> On Tue, Nov 25, 2014 at 11:20 PM, Lu, Huiwei <huiweilu at mcs.anl.gov> wrote:
> Could you try to run the following simple code to see if it works?
> 
> #include <mpi.h>
> #include <stdio.h>
> int main(int argc, char** argv)
> {
>     int rank, size;
>     MPI_Init(&argc, &argv);
>     MPI_Comm_rank(MPI_COMM_WORLD, &rank);
>     printf("rank %d\n", rank);
>     MPI_Finalize();
>     return 0;
> }
> 
>> Huiwei
> 
> > On Nov 25, 2014, at 11:11 PM, Amin Hassani <ahassani at cis.uab.edu> wrote:
> >
> > No, I checked. Also I always install my MPI's in /nethome/students/ahassani/usr/mpi. I never install them in /nethome/students/ahassani/usr. So MPI files will never get there. Even if put the /usr/mpi/bin in front of /usr/bin, it won't affect anything. There has never been any mpi installed in /usr/bin.
> >
> > Thank you.
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