[mpich-discuss] Problems with Pcontrol and MPE2 -- fixed, please accept this patch

[Anthony Chan]

Great.  I will look into the bug with your test program.

Thanks,
A.Chan

----- "Brian Wainscott" <brian at lstc.com> wrote:

> Hi Anthony,
> 
> OK, I've created a short program that does this:
> 
>  1 -- creates and dups some communicators
>  2 -- frees some of them
>  3 -- uses some of them, then frees them.
> 
> It can be compiled without any calls to MPI_Pcontrol, in which case it
> runs fine
> and produces a log file.  It can also be compiled with calls to
> MPI_Pcontrol(0)
> just before (1) and a call to MPI_Pcontrol(1) between (2) and (3). 
> (see
> WITH_PCONTROL at the top of the source file).
> 
> If I build it with the MPI_Pcontrol calls in place, it segfaults with
> your latest
> changes.  Hopefully this will help you figure out what is going on.
> 
> I'm using OpenMPI with MPE2, but I really don't think that matters.  I
> built it
> with this command:
> 
> mpecc -mpilog -o dynasim dynasim.c
> 
> and ran it on 4 processors.
> 
> Good luck, and let me know what you find out.
> 
> Brian