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message passing environment

ESAIM: Mathematical Modelling and Numerical Analysis (1)

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EasyMSG: Tools and techniques for an adaptive overlapping in SPMD programming
Pascal Havé
Journal:

ESAIM: Mathematical Modelling and Numerical Analysis / Volume 36 / Issue 5 / September 2002

Published online by Cambridge University Press:

15 October 2002, pp. 863-882

Print publication:

September 2002
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During the development of a parallel solver for Maxwell equations by integral formulations and Fast Multipole Method (FMM), we needed to optimize a critical part including a lot of communications and computations. Generally, many parallel programs need to communicate, but choosing explicitly the way and the instant may decrease the efficiency of the overall program. So, the overlapping of computations and communications may be a way to reduce this drawback. We will see a implementation of this techniques using dynamic and adaptive overlapping based on the EasyMSG high level C++ library over MPI, a case of SPMD programming.