[MPICH] Fortran code problems

[Rajeev Thakur]

Your code looks ok, and I am not able to reproduce the problem here, at
least with a build of 1.0.5p4 that uses pgf90. I didn't try the -machinefile
option though. What happens if you just run it as mpiexec -n 4 testf ?

Rajeev 

> -----Original Message-----
> From: owner-mpich-discuss at mcs.anl.gov 
> [mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of Jeffrey 
> B. Layton
> Sent: Friday, July 20, 2007 1:30 PM
> To: mpich-discuss at mcs.anl.gov
> Subject: [MPICH] Fortran code problems
> 
> Afternoon,
> 
> I hate to use this mailing list as an MPI debugging list, I really
> do hate to. But I'm having some trouble with a Fortran90 code
> that I can't find or fix. I'm using gcc-3.4.2 (you might remember
> from yesterday :)  )  and g95 on a Centos 4 box. I built
> mpich2-1.0.5p4.
> 
> I took the first code from the MPI-2 on Parallel IO, which is
> in C, and I translated it into F90. I've attached both codes to
> this email. When I run the C code, I get the correct results.
> I added a printf statement to make sure all processes were
> making it to MPI_FINALIZE. Here's the output:
> 
> mpiexec -machinefile ./machinelist -np 4 ./testc
> myank: 1 before finalize
> myank: 2 before finalize
> myank: 3 before finalize
> myank: 0 before finalize
> 
> When I run the F90 code, I get the following:
> 
> mpiexec -machinefile ./machinelist -np 4 ./testf
>  MYRANK: 1  BEFORE FINALIZE
>  MYRANK: 2  BEFORE FINALIZE
>  MYRANK: 3  BEFORE FINALIZE
>  MYRANK: 3  BEFORE FINALIZE
> 
> Notice how rank3 is repeated. Here's the funny thing, the
> output files from the F90 code are correct. I can't seem to find
> out why MYRANK=3 is repeated. Any ideas?
> 
> TIA!
> 
> Jeff
> 
> 
> 
>