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Fast and Efficient Total Exchange on Two Clusters
Abstract : Total Exchange is one of the most important collective communication patterns for scientific applications. In this paper we propose an algorithm called ${\mathcal LG}$ for the total exchange redistribution problem between two clusters. In our approach we perform communications in two different phases, aiming to minimize the number of communication steps through the wide-area network. Therefore, we are able to reduce the number of messages exchanged through the backbone to only 2× max (n 1 ,n 2) against 2×n 1 ×n 2 messages with the traditional strategy (where n 1 and n 2 are the number of nodes of each clusters). Experimental results show that we reach over than 50% of performance improvement comparing to the traditional strategies.
Cited literature [19 references]
https://hal.inria.fr/inria-00177533
Contributor : Emmanuel Jeannot <>
Submitted on : Tuesday, October 16, 2007 - 11:29:12 AM
Last modification on : Friday, February 26, 2021 - 3:28:02 PM
Long-term archiving on: : Monday, September 24, 2012 - 1:15:15 PM
Contributor : Emmanuel Jeannot <>
Submitted on : Tuesday, October 16, 2007 - 11:29:12 AM
Last modification on : Friday, February 26, 2021 - 3:28:02 PM
Long-term archiving on: : Monday, September 24, 2012 - 1:15:15 PM
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europar07.pdf
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