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Séminaire d'équipe(s) ParSys
Enhancing Asynchronous Iterative Linear Solvers Through Randomization
Masha Sosonkina

21 May 2019, 10h30
Salle/Bat : 465/PCRI-N
Contact :

Activités de recherche : Calcul à haute performance

Résumé :
Asynchronous implementations present a mechanism to improve the parallel performance of iterative linear system solution methods on highly parallel computing platforms by removing the synchronization overhead. In this talk, after a brief overview of asynchronous computations, we consider a class of asynchronous iterative linear system solvers that employ randomization to determine the component update orders, specifically focusing on the effects of non-uniform distributions. Results show that using such distributions may lead to a faster convergence than that when components are selected for updates uniformly. Finally, we note on the performance of hybrid parallel implementations of asynchronous methods.

Pour en savoir plus : https://parsys.lri.fr/seminar.html
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