Jeff,
thanks for the input. I found the problem and it was my program's problem. The fortran version of the ring as well as my program run. So, it looks like lam works under the combination of gcc, g++ and pgf90.
Marcelo
> On Fri, 21 May 2004, Marcelo Barreiro wrote:
>
> > I have compiled version 7.0.6 of lam-mpi on RH linux. I had to
> use
> > different vendors for C and fortran compilers: I used cc and c++,
> and
> > pgf90. I know that it is preferible not to do so, but my fortran
> > programs are in pgf90 and I do not have the C compilers from PGI.
>
> Hmm. This sounds dubious; I have never tried this combination, but
> I'm
> not 100% sure that it will work. I'm not saying that it
> *definitely
> won't* work; I'm just saying that I've never tested that. How's
> that for
> weasel-wording? ;-)
>
> > The examples that come with the distribution run OK. I run hello,
> pi and
> > trivial.
>
> Ok, good.
>
> Can you run the fortran versions of these as well? Perhaps the
> fortran
> ring program? If you can run these, then the combination
> (gcc/g++/pgf90)
> should be ok.
>
> > The result of 'mpif77 -showme' is
> >
> > pgf90 -I/home/mrb/bin/lam7_bin/include -
> L/home/mrb/bin/lam7_bin/lib
> > -llammpio -llamf77mpi -lmpi -llam -lutil -lpthread
> >
> > and of 'laminfo' is
> >
> > LAM/MPI: 7.0.6
> > Prefix: /home/mrb/bin/lam7_bin
> >
> > When I run my program (in pgf90) I get the following error, and
> the
> > program stops:
> >
> > 0: init_descriptor: invalid target descriptor
> > [snipped]
>
> Note that this is the real error -- LAM's lengthy message after
> this is
> simply telling you that at least one process died before executing
> or
> completing MPI_INIT.
>
> > I have seen in the mailing list that many other people have had
> the same
> > error message, but it is not clear to me what the cause can be.
> There
> > was no lam installed in the machine before I installed version
> 7.0.6.
> I actually searched through the archives and didn't see anyone else
> reporting this error message before. :-\
>
> I unfortunately do not have a lot of F90 experience -- I'm not sure
> if
> this is an f90 problem or not, but it kinda looks like it. Can you
> run
> your program as a singleton? i.e., something like:
>
> lamboot
> ./my_program
>
> I realize that it may not do anything useful with just one process,
> but
> you eliminate a bunch of troubleshooting variables by just running
> it
> serially (vs. through mpirun and the lamd's).
>
> Does your program do anything significant before MPI_INIT? This is
> where
> you might start looking -- see if something is failing (potentially
> unrelated to MPI) before MPI_INIT has a chance to execute. This is
> all
> assuming that you can run the fortran MPI examples properly (hello,
> ring,
> etc.).
>
> --
> {+} Jeff Squyres
> {+} jsquyres_at_[hidden]
> {+} http://www.lam-mpi.org/
> _______________________________________________
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