Skip to Main content Skip to Navigation
Reports

Impact of the Implementation of MPI Point-to-Point Communications on the Performance of Two General Sparse Solvers

Abstract : We examine the send and receive mechanisms of MPI and how to implement message passing robustly so that performance is not significantly affected by changes to the MPI system. We discuss this within the context of two different parallel algorithms for sparse Gaussian elimination: a multifrontal solver (MUMPS), and a supernodal one (SuperLU). The performance of our initial strategies based on simple MPI point-to-point communication primitives is very sensitive to the MPI system, particularly the way MPI buffers are used. Using more sophisticated nonblocking communication primitives improves the performance robustness and scalability, but at the cost of increased code complexity.
Document type :
Reports
Complete list of metadata

https://hal.inria.fr/inria-00072216
Contributor : Rapport de Recherche Inria <>
Submitted on : Tuesday, May 23, 2006 - 8:07:45 PM
Last modification on : Thursday, March 18, 2021 - 2:29:32 PM
Long-term archiving on: : Sunday, April 4, 2010 - 10:58:47 PM

Identifiers

  • HAL Id : inria-00072216, version 1

Citation

Patrick Amestoy, Iain S. Duff, Jean-Yves l'Excellent, Xiaoye S. Li. Impact of the Implementation of MPI Point-to-Point Communications on the Performance of Two General Sparse Solvers. [Research Report] RR-4372, INRIA. 2002. ⟨inria-00072216⟩

Share

Metrics

Record views

351

Files downloads

530