[mpich-discuss] stuck on MPI_Finalize and -mpilog

[tsilva at coas.oregonstate.edu]

Hi all,

I am working on a MPMD, and all the three programs were getting stuck  
on reaching MPI_Finalize. I can get it to work with minimalistic code,  
but when I build the complete components it gets stuck. Also, it seems  
to me that mpi_sends an mpi_recvs are well matched in my code.
Not this is the gory part: when I compile the problematic program with  
-mpilog ithe job completes with no problems. I discovered this by  
chance and find it disquieting that (the lack of) a compiler option  
will break the code. Any ideas of could be happening here? I don't  
want the final code to use -mpilog

some details:
  AMD
  Lahey Fortran 64bit Pro
  mpich 1.2.7p1 (p4 device)

Why the mpich1? The cluster has mpich2 compiled with PGI. Because this  
compiler has a bug that conflicts with some of my code I was forced to  
use Lahey Fortran  for my project and found that I could create a  
local mpich1 and use mpirun without interfering with mpich2's daemon.

Cheers,
Tiago