[mpich-discuss] f77 bindings and profiling

[Balaji, Pavan]

Florin,

What version of MPICH are you using?  There should be an -lmpifort in the library list.  Here’s what I get with mpich-3.2a2, which is correct:

% mpif77 -show ./examples/f77/fpi.f 
/usr/local/bin/gfortran -Wl,-flat_namespace ./examples/f77/fpi.f -I/usr/local/Cellar/mpich2/3.1.3/include -I/usr/local/Cellar/mpich2/3.1.3/include -L/usr/local/Cellar/mpich2/3.1.3/lib -lmpifort -lmpi -lpmpi

% PROFILE_PRELIB=-lfoo mpif77 -show ./examples/f77/fpi.f 
/usr/local/bin/gfortran -Wl,-flat_namespace ./examples/f77/fpi.f -I/usr/local/Cellar/mpich2/3.1.3/include -I/usr/local/Cellar/mpich2/3.1.3/include -L/usr/local/Cellar/mpich2/3.1.3/lib -lmpifort -lfoo -lmpi -lpmpi

In the latter case, the Fortran symbols are in the libmpifort library, which uses libfoo when it tries to find the corresponding C symbols.

  — Pavan

> On Nov 17, 2014, at 3:28 PM, Isaila, Florin D. <fisaila at mcs.anl.gov> wrote:
> 
> Hi , 
> 
> I am trying to use MPI profiling to make mpi_init from a F77 program call my MPI_Init (written in C), but I do not manage to achieve that. In this simple F77 program:
>        program main
>        include  'mpif.h'      
>        integer error
>        call mpi_init(error)
>        call mpi_finalize(error)
>        end
> 
> I try to make the mpi_init  call: 
> int MPI_Init (int *argc, char ***argv){  int ret;
>   printf("My function!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
>   ret = PMPI_Init(argc, argv);
>   return ret;
> }
> 
> My MPI_Init belongs to a library libtarget.a I created. I use -profile for compiling and I created the target.conf containing:
> PROFILE_PRELIB="-L/homes/fisaila/benches/try/staticlib_mpif77 -ltarget" 
> in the right place. 
> 
> The library appears in the command line  before the mpich library: 
> mpif77 -show -g -profile=target init_finalize.f -o init_finalize
> gfortran -g init_finalize.f -o init_finalize -I/homes/fisaila/software/mpich/include -L/homes/fisaila/software/mpich/lib -L/homes/fisaila/benches/try/staticlib_mpif77 -ltarget -Wl,-rpath -Wl,/homes/fisaila/software/mpich/lib -lmpich -lopa -lmpl -lrt -lpthread
> 
> However, the program never gets into my MPI_Init. 
> 
> Any suggestion about what I am missing?
> 
> Thanks
> Florin
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
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--
Pavan Balaji  ✉️
http://www.mcs.anl.gov/~balaji

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