Hello,
after a few days of struggling and looking for the answer
I decided to ask here.
I installed LAM/MPI 7.1.3 on my Kubuntu 7.05.1 (Feisty Fawn):
./configure --prefix=/opt/mpi --with-fc=lf95
make
make install
(Lahey Fortran 6.2-1 was already installed and working fine
and enviroment variables PATH, LD_LIBRARY_PATH set properly).
Installation completeted successfully. After compilation
of the code tmpi.f90:
!------------
program testmpi
implicit none
include 'mpif.h'
integer ierr
call MPI_INIT(ierr)
print*,"hello..."
call MPI_FINALIZE(ierr)
end program testmpi
!------------
with
mpif77 tmpi.f90 -o myprog
(no errors, no warnings, executable created)
I tried:
mpirun -np 2 ./myprog
and I got:
-----------------------------------------------------------------------------
It seems that [at least] one of the processes that was started with
mpirun did not invoke MPI_INIT before quitting (it is possible that
more than one process did not invoke MPI_INIT -- mpirun was only
notified of the first one, which was on node n0).
mpirun can *only* be used with MPI programs (i.e., programs that
invoke MPI_INIT and MPI_FINALIZE). You can use the "lamexec" program
to run non-MPI programs over the lambooted nodes.
-----------------------------------------------------------------------------
It seems that something really wrong happened, and the executable
didn't even reach MPI_INIT. What could be the problem here?
What's more interesting, everything works fine if I use
gfortran instead of Lahey. And example programs in C cause
no problems in both of the cases (compiled with mpicc).
I also tried LAM/MPI test suite. All tests with C files
passed and failed on *.f files.
Any hints?
Best regards,
Maciej Marek
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