Hi Kyle,
I was wrong about MPI_Finalize being invoked twice, I had miss read the
code. I'm not sure why pvbatch is hanging in MPI_Finalize on Nautilus. I
haven't been able to find anything in the debugger. This is new for 3.98.
Burlen
On 12/03/2012 07:36 AM, Kyle Lutz wrote:
Hi Burlen,
On Thu, Nov 29, 2012 at 1:27 PM, Burlen Loring<blor...@lbl.gov> wrote:
it looks like pvserver is also impacted, hanging after the gui disconnects.
On 11/28/2012 12:53 PM, Burlen Loring wrote:
Hi All,
some parallel tests have been failing for some time on Nautilus.
http://open.cdash.org/viewTest.php?onlyfailed&buildid=2684614
There are MPI calls made after finalize which cause deadlock issues on SGI
MPT. It affects pvbatch for sure. The following snip-it shows the bug, and
bug report here: http://paraview.org/Bug/view.php?id=13690
//----------------------------------------------------------------------------
bool vtkProcessModule::Finalize()
{
...
vtkProcessModule::GlobalController->Finalize(1);<-------mpi_finalize
called here
This shouldn't be calling MPI_Finalize() as the finalizedExternally
argument is 1 and in vtkMPIController::Finalize():
if (finalizedExternally == 0)
{
MPI_Finalize();
}
So my guess is that it's being invoked elsewhere.
...
#ifdef PARAVIEW_USE_MPI
if (vtkProcessModule::FinalizeMPI)
{
MPI_Barrier(MPI_COMM_WORLD);<-------------------------barrier after
mpi_finalize
MPI_Finalize();<--------------------------------------second
mpi_finalize
}
#endif
I've made a patch which should prevent this second of code from ever
being called twice by setting the FinalizeMPI flag to false after
calling MPI_Finalize(). Can you take a look here:
http://review.source.kitware.com/#/t/1808/ and let me know if that
helps the issue.
Otherwise, would you be able to set a breakpoint on MPI_Finalize() and
get a backtrace of where it gets invoked for the second time? That
would be very helpful in tracking down the problem.
Thanks,
Kyle
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