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PaStiX: A Parallel Sparse Direct Solver Based on a Static Scheduling for Mixed 1D/2D Block Distributions

Abstract : We present and analyze a general algorithm which computes an efficient static scheduling of block computations for a parallel $LDL^t$ factorization of sparse symmetric positive definite systems based on a combination of 1D and 2D block distributions. Our solver uses a supernodal fan-in approach and is fully driven by this scheduling. We give an overview of the algorithm and present performance results and comparisons with PSPASES on an IBM-SP2 with 120 MHz Power2SC nodes for a collection of irregular problems.
keyword : Sparse
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Conference papers
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https://hal.inria.fr/inria-00346594
Contributor : Pierre Ramet <>
Submitted on : Thursday, December 11, 2008 - 6:45:04 PM
Last modification on : Friday, May 3, 2019 - 1:30:34 AM

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  • HAL Id : inria-00346594, version 1

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Pascal Hénon, Pierre Ramet, Jean Roman. PaStiX: A Parallel Sparse Direct Solver Based on a Static Scheduling for Mixed 1D/2D Block Distributions. Irregular'2000 workshop of IPDPS, 2000, Cancun, Mexico. pp.519-525. ⟨inria-00346594⟩

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