Pipelined Preconditioned Conjugate Gradient Methods for real and complex linear systems for distributed memory architectures

•We introduce PIPECG-OATI-c to solve complex Hermitian and symmetric linear systems.•PIPECG-OATI-c reduces synchronizations in PCG and overlaps them with computations.•We provide optimized implementations for PIPECG-OATI-c.•We obtain 25% performance improvement over PCG for 1B problem on 16K cores.•...

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Veröffentlicht in:	Journal of parallel and distributed computing Jg. 163; S. 147 - 155
Hauptverfasser:	Tiwari, Manasi, Vadhiyar, Sathish
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	Elsevier Inc 01.05.2022
Schlagworte:	Complex Hermitian positive definite systems Complex symmetric systems Overlapping communication and computations Pipelining Preconditioned Conjugate Gradient Complex Hermitian positive definite systems Overlapping communication and computations Pipelining Complex symmetric systems Preconditioned Conjugate Gradient
ISSN:	0743-7315, 1096-0848
Online-Zugang:	Volltext
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