Sorry for the delay -- I replied to the original post on the user's
list.
On May 12, 2009, at 6:21 AM, Katz, Jacob wrote:
Fwd’ing to devel list as a bug report…
Thanks.
--------------------------------
Jacob M. Katz | jacob.k...@intel.com | Work: +972-4-865-5726 | iNet:
(8)-465-5726
From: users-boun...@open-mpi.org [mailto:users-boun...@open-mpi.org]
On Behalf Of Katz, Jacob
Sent: Sunday, May 10, 2009 12:52
To: Open MPI Users
Subject: [OMPI users] Bug in return status of MPI_WAIT()?
Hi,
While trying error-related functionality of OMPI, I came across a
situation where when I use MPI_ERRORS_RETURN error handler, the
errors do not come out correctly from WAIT calls.
The program below correctly terminates with a fatal “message
truncated” error, but when the line setting the error handler to
MPI_ERRORS_RETURN is uncommented, it silently completes. I expected
the print out that checks the status after WAIT call to be executed,
but it wasn’t.
The issue didn’t happen when using blocking recv.
A bug or my incorrect usage?
Thanks!
// mpic++ -o test test.cpp
// mpirun -np2 ./test
#include "mpi.h"
#include <iostream>
using namespace std;
int main (int argc, char *argv[])
{
int rank;
char buf[100] = "hmmmm";
MPI::Status stat;
MPI::Init(argc, argv);
rank = MPI::COMM_WORLD.Get_rank();
// MPI::COMM_WORLD.Set_errhandler(MPI::ERRORS_RETURN);
if (rank == 0)
{
MPI::Request r = MPI::COMM_WORLD.Irecv(buf, 1, MPI_CHAR,
MPI::ANY_SOURCE, MPI::ANY_TAG);
r.Wait(stat);
if (stat.Get_error() != MPI::SUCCESS)
{
cout << "0: Error during recv" << endl;
}
}
else
{
MPI::COMM_WORLD.Send(buf, 2, MPI_CHAR, 0, 0);
}
MPI::Finalize();
return (0);
}
--------------------------------
Jacob M. Katz | jacob.k...@intel.com | Work: +972-4-865-5726 | iNet:
(8)-465-5726
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