Correct. Here's the original commit that fixed the problem:
https://svn.open-mpi.org/trac/ompi/changeset/16360
And the commit to the v1.2 branch:
https://svn.open-mpi.org/trac/ompi/changeset/16519
On Dec 12, 2007, at 2:43 PM, Moreland, Kenneth wrote:
Thanks Tim. I've since noticed similar problems with MPI_Allgatherv
and
MPI_Scatterv. I'm guessing they are all related. Do you happen to
know
if those are being fixed as well?
-Ken
-----Original Message-----
From: users-boun...@open-mpi.org [mailto:users-boun...@open-mpi.org]
On
Behalf Of Tim Mattox
Sent: Tuesday, December 11, 2007 3:34 PM
To: Open MPI Users
Subject: Re: [OMPI users] Problems with GATHERV on one process
Hello Ken,
This is a known bug, which is fixed in the upcoming 1.2.5 release.
We
expect 1.2.5
to come out very soon. We should have a new release candidate for
1.2.5
posted
by tomorrow.
See these tickets about the bug if you care to look:
https://svn.open-mpi.org/trac/ompi/ticket/1166
https://svn.open-mpi.org/trac/ompi/ticket/1157
On Dec 11, 2007 2:48 PM, Moreland, Kenneth <kmo...@sandia.gov> wrote:
I recently ran into a problem with GATHERV while running some
randomized
tests on my MPI code. The problem seems to occur when running
MPI_Gatherv with a displacement on a communicator with a single
process.
The code listed below exercises this errant behavior. I have tried
it
on OpenMPI 1.1.2 and 1.2.4.
Granted, this is not a situation that one would normally run into in
a
real application, but I just wanted to check to make sure I was not
doing anything wrong.
-Ken
#include <mpi.h>
#include <stdlib.h>
#include <stdio.h>
int main(int argc, char **argv)
{
int rank;
MPI_Comm smallComm;
int senddata[4], recvdata[4], length, offset;
MPI_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
// Split up into communicators of size 1.
MPI_Comm_split(MPI_COMM_WORLD, rank, 0, &smallComm);
// Now try to do a gatherv.
senddata[0] = 5; senddata[1] = 6; senddata[2] = 7; senddata[3] =
8;
recvdata[0] = 0; recvdata[1] = 0; recvdata[2] = 0; recvdata[3] =
0;
length = 3;
offset = 1;
MPI_Gatherv(senddata, length, MPI_INT,
recvdata, &length, &offset, MPI_INT, 0, smallComm);
if (senddata[0] != recvdata[offset])
{
printf("%d: %d != %d?\n", rank, senddata[0], recvdata[offset]);
}
else
{
printf("%d: Everything OK.\n", rank);
}
return 0;
}
**** Kenneth Moreland
*** Sandia National Laboratories
***********
*** *** *** email: kmo...@sandia.gov
** *** ** phone: (505) 844-8919
*** fax: (505) 845-0833
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--
Tim Mattox, Ph.D. - http://homepage.mac.com/tmattox/
tmat...@gmail.com || timat...@open-mpi.org
I'm a bright... http://www.the-brights.net/
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Jeff Squyres
Cisco Systems
