I found out that the package i compiled had an mpi.h file of its own, called
in the source code through a line: include "mpi.h". I changed that line to :
include <mpi.h> and bypassed that problem (in order to include the LAM's
mpi.h.
Unfortunately it performed another problem. I stops during the execution of
a specific procedure. I have tried and compiled the program using:
LAM 6.5.9
LAM 7.0.6
MPICH 1.2.5.2
And it persistently crashes while trying to execute this specific procedure.
I have tried to contact the authors of the program and they never replied.
Still I do not know what to do. I am pretty sure it is a minor bug because i
have compiled that program in the past in a HP-UX machine and i know that it
worked fine. I think that HP has its own implementation of mpi. Do you know
any standard cross platform inconsistencies? Anything i could try?
Once more thank you very much,
Gkikas
-----Original Message-----
From: lam-bounces_at_[hidden] [mailto:lam-bounces_at_[hidden]] On Behalf Of
Jeff Squyres
Sent: Friday, August 06, 2004 2:02 PM
To: General LAM/MPI mailing list
Subject: Re: LAM: Invalid communicator
Just as the error message says, it means that you're calling
MPI_COMM_SIZE with an invalid communicator. ;-)
This can happen if you MPI_COMM_FREE a communicator and then call
MPI_COMM_SIZE with that communicator, or you pass in NULL to
MPI_COMM_SIZE, or something similar to that.
On Aug 6, 2004, at 4:23 AM, Gkikas Magiorkinis wrote:
> Hi again,
>
> I have finally installed LAM and compiled a program which outputs:
>
> MPI_Comm_size: invalid communicator: Invalid argument (rank 0,
> MPI_COMM_WORLD)
> MPI_Comm_size: invalid communicator: Invalid argument (rank 1,
> MPI_COMM_WORLD)
> Rank (1, MPI_COMM_WORLD): Call stack within LAM:
> Rank (1, MPI_COMM_WORLD): - MPI_Comm_size()
> Rank (1, MPI_COMM_WORLD): - main ()
> MPI_Comm_size: invalid communicator: Invalid argument (rank 0,
> MPI_COMM_WORLD)
>
> Does anyone have any idea why this could be hapenning?
--
{+} Jeff Squyres
{+} jsquyres_at_[hidden]
{+} http://www.lam-mpi.org/
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