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International Parallel and Distributed Processing Symposium (IPDPS'03)
Load-Balancing Scatter Operations for Grid Computing
Nice, France
April 22-April 26
ISBN: 0-7695-1926-1
Stéphane Genaud, Universit? Louis Pasteur
Arnaud Giersch, Universit? Louis Pasteur
Frédéric Vivien, ?cole Normale Sup?rieure de Lyon
We present solutions to statically load-balance scatter operations in parallel codes run on Grids. Our load-balancing strategy is based on the modification of the data distributions used in scatter operations. We study the replacement of scatter operations with a parameterized scatter, allowing a custom distribution of data. The paper presents: 1) a general algorithm which finds an optimal distribution of data across processors; 2) a quicker guaranteed heuristic relying on hypotheses on communications and computations; 3) a policy on the ordering of the processors. Experimental results with an MPI scientific code illustrate the benefits obtained from our load-balancing.
Citation:
Stéphane Genaud, Arnaud Giersch, Frédéric Vivien, "Load-Balancing Scatter Operations for Grid Computing," ipdps, pp.101a, International Parallel and Distributed Processing Symposium (IPDPS'03), 2003
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