[Mpi3-ft] MPI Fault Tolerance scenarios

Supalov, Alexander alexander.supalov at intel.com
Tue Mar 3 02:12:47 CST 2009

Right. The low-level interface may be optional.

From: mpi3-ft-bounces at lists.mpi-forum.org [mailto:mpi3-ft-bounces at lists.mpi-forum.org] On Behalf Of Greg Bronevetsky
Sent: Monday, March 02, 2009 7:41 PM
To: MPI 3.0 Fault Tolerance and Dynamic Process Control working Group; MPI 3.0 Fault Tolerance and Dynamic Process Control working Group
Subject: Re: [Mpi3-ft] MPI Fault Tolerance scenarios

What I'm proposing is:

- Define a standard set of FT error handlers for a defined set of policies (see, e.g., Bronis' proposal aired at the telecon: nothing, local MPI calls, pt2pt w/o affected process, coll w/o affected process, pt2pt w/ affected process, coll w/ affected process)
- Provide a prototype implementation of those handlers in terms of the proposed API
- Allow implementors to provide error handlers that do not use this API, if they find a better way of fixing particular FT issues up
- Allow users to create their own error handlers using the proposed API, to which end the API should be functional inside an error handler

Alexander, just to clarify, are you suggesting that we have two APIs, one low-level API and another API that consists of easy-to-use error handlers?

Greg Bronevetsky
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