Hello,

I have installed MPICH for Windows and tried to compile my first program. As I use Fortran, I have included the file mpif.h.

I cannot call the routine MPI_INIT(). The compiler report that this routine is not defined. Effectively, MPI_INIT() does not appear in mpif.h, while its C prototype may be found in mpi.h.

Has the distribution of mpif.h a known bug?

Thanks in advance for your help.

jojo

Sounds like you're not linking to the correct libraries.

Thanks a lot for your answer.

In which library file is MPI_INIT? MPI appears very unclear for me. I do not really understand how it is organized.

Thanks,

Best Regards,

jojo

On my system it looks like libmpi.a. You can use the 'nm' command to search archives. Try 'nm "library name" | grep -i mpi_init ' to look at the archive "library name". If the object is in the archive and defined you should only see a line that begins with 'T' followed by the object name.

I have found libmpich.a. Unfortunately, I use Windows XP and cannot read libmpich.a but I assume it is OK as you mention.

This file is in MPICH\SDK.gcc\lib and my (simple) makefile is as follows:

================================================== = # Makefile

toto: toto.o

g77 -I"C:\Program Files\MPICH\SDK.gcc\include" -L"C:\Program Files\MPICH\SDK.gcc\lib" -lmpich -o toto toto.o

toto.o: toto.f

g77 -I"C:\Program Files\MPICH\SDK.gcc\include" -L"C:\Program Files\MPICH\SDK.gcc\lib" -lmpich -c toto.f ================================================== ==

This makefile does not lead to any error excepted the one I mentioned when I try to include MPI routines but I think it is wrong and this is my problem.

Thanks a lot for your help.

jojo