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Iteration-fusing conjugate gradient for sparse linear systems with MPI + OmpSs
dc.contributor.author | Barreda Vayá, Maria | |
dc.contributor.author | Aliaga Estellés, José Ignacio | |
dc.contributor.author | Beltran Querol, Vicenç | |
dc.contributor.author | Casas, Marc | |
dc.date.accessioned | 2020-03-24T08:22:55Z | |
dc.date.available | 2020-03-24T08:22:55Z | |
dc.date.issued | 2019-12-10 | |
dc.identifier.citation | Barreda, M., Aliaga, J.I., Beltran, V. et al. Iteration-fusing conjugate gradient for sparse linear systems with MPI + OmpSs. J Supercomput (2019). https://doi.org/10.1007/s11227-019-03100-4 | ca_CA |
dc.identifier.uri | http://hdl.handle.net/10234/187064 | |
dc.description.abstract | In this paper, we target the parallel solution of sparse linear systems via iterative Krylov subspace-based method enhanced with a block-Jacobi preconditioner on a cluster of multicore processors. In order to tackle large-scale problems, we develop task-parallel implementations of the preconditioned conjugate gradient method that improve the interoperability between the message-passing interface and OmpSs programming models. Specifically, we progressively integrate several communication-reduction and iteration-fusing strategies into the initial code, obtaining more efficient versions of the method. For all these implementations, we analyze the communication patterns and perform a comparative analysis of their performance and scalability on a cluster consisting of 32 nodes with 24 cores each. The experimental analysis shows that the techniques described in the paper outperform the classical method by a margin that varies between 6 and 48%, depending on the evaluation. | ca_CA |
dc.format.extent | 21 p. | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | Springer | ca_CA |
dc.rights | © 2020 Springer Nature Switzerland AG. Part of Springer Nature. | ca_CA |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | * |
dc.subject | sparse linear systems | ca_CA |
dc.subject | multicore processors | ca_CA |
dc.subject | distributed systems | ca_CA |
dc.subject | communication-reduction strategies | ca_CA |
dc.subject | iteration fusing | ca_CA |
dc.title | Iteration-fusing conjugate gradient for sparse linear systems with MPI + OmpSs | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | https://doi.org/10.1007/s11227-019-03100-4 | |
dc.relation.projectID | H2020 EU FETHPC (Project 671602 “INTERTWinE.” ) ; Ministerio de Economía y Competitividad, Spain (Project TIN2017-82972-R) ; Universitat Jaume I (POSDOC-A/2017/11 project). | ca_CA |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | ca_CA |
dc.relation.publisherVersion | https://link.springer.com/article/10.1007/s11227-019-03100-4#citeas | ca_CA |
dc.type.version | info:eu-repo/semantics/acceptedVersion | ca_CA |
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