[Mpi-forum] MPI-3 pre-proposal

Supalov, Alexander alexander.supalov at intel.com
Mon Apr 21 05:59:54 CDT 2008


This echoes in part the current subset proposal (see

Best regards.


-----Original Message-----
From: mpi-forum-bounces at lists.mpi-forum.org
[mailto:mpi-forum-bounces at lists.mpi-forum.org] On Behalf Of Jeff Squyres
Sent: Monday, April 14, 2008 10:49 PM
To: Main MPI Forum mailing list
Subject: [Mpi-forum] MPI-3 pre-proposal

I have a "pre-proposal" for the Forum, meaning that I have an idea but  
want to see if others find it valuable before spending the time to  
turn it into a formal proposal.

The general idea is to create a flexible mechanism to both pass hints  
from the user application to the MPI implementation and to pass  
information from the MPI implementation back to the application.  Some  
rough ideas:

- Allow hints to be passed from the app to the implementation on a per- 
handle basis (e.g., on a specific communicator)
- Allow hints to be passed from the app to the implementation for all  
instances of a handle type (e.g., for all communicators)
- Allow hints to be specified before MPI_INIT, or create another  
variant of MPI_INIT that allows passing hints
- Create a mechanism for an MPI implementation to pass arbitrary  
information back to the user, perhaps in response to an arbitrary  
query (maybe something along the lines of an MPI_Info in and and  
MPI_Info out)


Jeff Squyres
Cisco Systems

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