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We evaluate the performance of our implementations using DDTBench and two mini-applications written with MPI derived datatypes and obtain communication speedups of up to 20x and mini-application speedup ... MPI's derived datatypes accomplish the former although their performance in current MPI implementations shows scope for improvement. JIT-compilation can be used for the latter. ... ACKNOWLEDGEMENTS EuroMPI ' 15 , 15 September 21-23, 2015, Bordeaux , France c 2015 ACM. ...doi:10.1145/2802658.2802659 dblp:conf/pvm/PrabhuG15 fatcat:mekb46sklvguppyirp5rdl6uuu
The third question stems from the modification of the rank mapping by node substitutions, which can incur additional message collisions. ... This paper considers the questions of how spare nodes should be allocated, how to substitute them for faulty nodes, and how much the communication performance is affected by such a substitution. ... This research is partially supported by the CREST project of the Japan Science and Technology Agency (JST). ...doi:10.1145/2802658.2802670 dblp:conf/pvm/HoriYHBBI15 fatcat:dqipvfldzjdfnjr7j2owdj7ou4
We consider the problem of accurately measuring the time to complete an MPI collective operation, as the result strongly depends on how the time is measured. ... Our goal is to develop an experimental method that allows for reproducible measurements of MPI collectives. ... Acknowledgments We thank Alf Gerisch (TU Darmstadt) for discussions and comments, and Thomas Geenen (SURFsara) for the access to the Dutch national supercomputer Cartesius. ...doi:10.1145/2802658.2802662 dblp:conf/pvm/HunoldC15 fatcat:e6hvfl4tgnd65f2nyuugj6audi