Communication-Efficient String Sorting

There has been surprisingly little work on algorithms for sorting strings on distributed-memory parallel machines. We develop efficient algorithms for this problem based on the multi-way merging principle. These algorithms inspect only characters that are needed to determine the sorting order. Moreo...

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Vydané v:	Proceedings - IEEE International Parallel and Distributed Processing Symposium s. 137 - 147
Hlavní autori:	Bingmann, Timo, Sanders, Peter, Schimek, Matthias
Médium:	Konferenčný príspevok..
Jazyk:	English
Vydavateľské údaje:	IEEE 01.05.2020
Predmet:	Arrays Buildings Clustering algorithms communication-efficient algorithm distributed-memory algorithm Merging Partitioning algorithms Sorting string sorting
ISSN:	1530-2075
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Popis
Shrnutí:	There has been surprisingly little work on algorithms for sorting strings on distributed-memory parallel machines. We develop efficient algorithms for this problem based on the multi-way merging principle. These algorithms inspect only characters that are needed to determine the sorting order. Moreover, communication volume is reduced by also communicating (roughly) only those characters and by communicating repetitions of the same prefixes only once. Experiments on up to 1280 cores reveal that these algorithm are often more than five times faster than previous algorithms.
ISSN:	1530-2075
DOI:	10.1109/IPDPS47924.2020.00024