Joshua Hursey <jjhursey@open-mpi.org> · 09/20/2010 10:05 AM

(MPI_ERR_COUNT, MPI_ERR_TAG) except
by a bug in the application itself?
How can it be easier for someone to know how to continue
from an arbitrary application bug with confidence that the application
is still giving good answers, than to just fix the app?
During EuroMPI and the MPI Forum meeting last week
the issue of the MPI state after an error was brought up a few times. The
issue is that since the state is undefined then no portable program can
be written that uses the errorhandlers then MPI functionality following
the error. This issue is particularly difficult for applications that wish
to catch informational or warning type errors (e.g., MPI_ERR_COUNT, MPI_ERR_TAG,
MPI_ERR_UNSUPPORTED_OPERATION). These operations are often recoverable
by the MPI implementation and/or the application.

To address this portability issue, I am bringing out the MPI_ERR_CANNOT_CONTINUE
error class from the stabilization proposal. I presented the idea to the
MPI Forum during a plenary session last week and received a positive response
on building a formal proposal [Straw vote: 22 (yes), 0 (no), 3 (abstain)].

I have created a first draft of the proposal for the working group to review
on the wiki at the link below:

https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/ft/err_cannot_continue

I would like to have this proposal ready by the Oct. meeting so we can
have a formal plenary session on it. If all goes well, maybe we can get
a first reading by Dec.

Let me know what you think about this proposal.

-- Josh

------------------------------------

Joshua Hursey

Postdoctoral Research Associate

Oak Ridge National Laboratory

http://www.cs.indiana.edu/~jjhursey

_______________________________________________

mpi3-ft mailing list

mpi3-ft@lists.mpi-forum.org

http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-ft

From:	Joshua Hursey <jjhursey@open-mpi.org>
To:	"MPI 3.0 Fault Tolerance and Dynamic Process Control working Group" <mpi3-ft@lists.mpi-forum.org>
Date:	09/20/2010 10:05 AM
Subject:	[Mpi3-ft] Defining the state of MPI after an error
Sent by:	mpi3-ft-bounces@lists.mpi-forum.org