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Conference Papers Year : 2013

Combining Static and Dynamic Validation of MPI Collective Communication

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Abstract

Collective MPI communications have to be executed in the same order by all processes in their ommunicator and the same number of times, otherwise a deadlock occurs. As soon as the controlflow involving these collective operations becomes more complex, in particular including conditionals on process ranks, ensuring the correction of such code is error-prone. We propose in this paper a static analysis to detect when such situation occurs, combined with a code transformation that prevents from eadlocking. We show on several benchmarks the small impact on performance and the ease of integration of our techniques in the development process.
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Dates and versions

hal-00920901 , version 1 (20-12-2013)

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Emmanuelle Saillard, Patrick Carribault, Denis Barthou. Combining Static and Dynamic Validation of MPI Collective Communication. EuroMPI 2013 - 20th European MPI Users' Group Meeting, Sep 2013, Madrid, Spain. pp.117-122, ⟨10.1145/2488551.2488555⟩. ⟨hal-00920901⟩
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