Gesellschaft für Informatik e.V.

Lecture Notes in Informatics


Software Engineering 2012. Workshopband P-199, 75-88 (2012).

Gesellschaft für Informatik, Bonn
2012


Copyright © Gesellschaft für Informatik, Bonn

Contents

Making MPI Intelligent

Dirk Tetzlaff and Sabine Glesner

Abstract


Mapping parallel applications to multi-processor architectures requires information about the execution times of the concurrent processes to find an optimal allocation and must take into account the interprocessor communication at runtime, whose overheads have emerged as the major performance limitation. However, both information cannot be statically known in advance. In this paper we present a sophisticated approach for mapping parallel MPI applications to concurrent architectures using machine learning techniques. This automatically generates heuristics that provide the compiler with knowledge of the considered runtime behavior, hence yielding more precise heuristics than those generated by pure static analyses. The heuristics can be used to direct the runtime environment of MPI, which enables the reallocation of processes to other processors at runtime and, furthermore, results in a better initial allocation of MPI processes.


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Gesellschaft für Informatik, Bonn
ISBN 978-3-88579-293-2


Last changed 04.10.2013 18:38:01