Performance analysis of pure MPI versus MPI+OpenMP for Jacobi Iteration and a 3D FFT on the Cray XT5

dc.contributor.advisor Soma Chaudhuri
dc.contributor.advisor Glenn Luecke Weiss, Olga
dc.contributor.department Computer Science 2018-08-11T19:05:46.000 2020-06-30T02:43:10Z 2020-06-30T02:43:10Z Sun Jan 01 00:00:00 UTC 2012 2013-06-05 2012-01-01
dc.description.abstract <p>Today many high performance computers are collections of shared memory compute nodes with each compute node having one or more multi-core processors. When writing parallel programs for these machines, one can use pure MPI or various hybrid approaches using MPI and OpenMP. Since OpenMP threads are lighter weight than MPI processes, one would expect that hybrid approaches will achieve better performance and scalability than pure MPI. In practice this is not always the case. This paper investigates the performance and scalability of pure MPI versus hybrid MPI+OpenMP for Jacobi iteration and for a 3D FFT on the Cray XT5.</p>
dc.format.mimetype application/pdf
dc.identifier archive/
dc.identifier.articleid 3516
dc.identifier.contextkey 3437878
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath etd/12509
dc.language.iso en
dc.source.bitstream archive/|||Fri Jan 14 19:23:33 UTC 2022
dc.subject.disciplines Computer Sciences
dc.subject.keywords Cray XT5
dc.subject.keywords FFT
dc.subject.keywords hybrid programming
dc.subject.keywords MPI
dc.subject.keywords OpenMP
dc.title Performance analysis of pure MPI versus MPI+OpenMP for Jacobi Iteration and a 3D FFT on the Cray XT5
dc.type article
dc.type.genre thesis
dspace.entity.type Publication
relation.isOrgUnitOfPublication f7be4eb9-d1d0-4081-859b-b15cee251456 thesis Master of Science
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