[petsc-users] Problem with mpi

[TAY Wee Beng]

Hi,

I have a mpi code which works fine in my previous clusters.

However, there's mpi problem when I use it in the new clusters, which 
use openmpi. I wonder if there's a relation.

The error is:

[n12-70:14429] *** An error occurred in MPI_comm_size
[n12-70:14429] *** on communicator MPI_COMM_WORLD
[n12-70:14429] *** MPI_ERR_COMM: invalid communicator
[n12-70:14429] *** MPI_ERRORS_ARE_FATAL (your MPI job will now abort)
2.48user 0.45system 0:03.99elapsed 73%CPU (0avgtext+0avgdata 
2871936maxresident)k
0inputs+0outputs (0major+185587minor)pagefaults 0swaps
--------------------------------------------------------------------------
mpiexec has exited due to process rank 3 with PID 14425 on
node n12-70 exiting without calling "finalize". This may
have caused other processes in the application to be
terminated by signals sent by mpiexec (as reported here).
--------------------------------------------------------------------------
[n12-70:14421] 3 more processes have sent help message 
help-mpi-errors.txt / mpi_errors_are_fatal
[n12-70:14421] Set MCA parameter "orte_base_help_aggregate" to 0 to see 
all help / error messages

I am not sure what other information you will need. I will provide more 
information if required. I tried running on 1, 4 and 8 processors but 
all can't work.

-- 
Yours sincerely,

TAY Wee Beng