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Conference Papers Year : 2007

Improving Reactivity and Communication Overlap in MPI using a Generic I/O Manager

Abstract

MPI applications may waste thousands of CPU cycles if they do not efficiently overlap communications and computation. In this paper, we present a generic and portable I/O manager that is able to make communication progress asynchronously using tasklets. It chooses automatically the most appropriate communication method, depending on the context: multi-threaded application or not, SMP machine or not. We have implemented and evaluated our I/O manager with Mad-MPI, our own MPI implementation, and compared it to other existing MPI implementations regarding the ability to efficiently overlap communication and computation.
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Dates and versions

inria-00177167 , version 1 (05-10-2007)

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François Trahay, Alexandre Denis, Olivier Aumage, Raymond Namyst. Improving Reactivity and Communication Overlap in MPI using a Generic I/O Manager. EuroPVM/MPI 2007, Oct 2007, Paris, France. pp.170-177, ⟨10.1007/978-3-540-75416-9_27⟩. ⟨inria-00177167⟩
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