[RegCNET] A small code for checking if MPICH well installed
XUNQIANG BI
bixq at ictp.it
Tue Nov 25 09:17:11 CET 2008
Dear all:
There are some reports about the parallel environment configuration
at RegCNET. Here is a small code to check if the MPICH is well
installed. It is a basic requirement that your MPICH to pass
this check (though the byteswapio problem is not included at
this check).
sample.f
include 'mpif.h'
integer myid,ierr,NCPU
integer status(MPI_STATUS_SIZE)
call MPI_INIT(ierr)
call MPI_COMM_RANK(MPI_COMM_WORLD,myid,ierr)
call MPI_COMM_SIZE(MPI_COMM_WORLD,NCPU,ierr)
print *,"process",myid,"of",NCPU
call MPI_FINALIZE(ierr)
stop
end
then,
You compile it,
mpif90 -o a.out sample.f
Then submit the job,
mpirun -np 4 ./a.out
Best regards,
Xunqiang Bi
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