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Enabling Application Resilience With and Without the MPI Standard

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Executive Summary

As recent research has demonstrated, it is becoming a necessity for large scale applications to have the ability to tolerate process failure during an execution. As the number of processes increases, checkpoint/restart fault tolerance approaches requiring large concurrent state check-pointing become untenable and radically new methods to address fault tolerance are needed. This paper addresses these challenges by proposing a novel approach to a minimalistic fault discovery and management model. Such a model allows application to run to completion despite fail-stop failures. As a proof of concept, in addition to the proposed fault tolerance model, an implementation in the context of the Open MPI library is provided, evaluated and analyzed.

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