J
Julien Langou
Researcher at University of Colorado Denver
Publications - 123
Citations - 4927
Julien Langou is an academic researcher from University of Colorado Denver. The author has contributed to research in topics: QR decomposition & Matrix (mathematics). The author has an hindex of 29, co-authored 117 publications receiving 4515 citations. Previous affiliations of Julien Langou include University of Tennessee.
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A class of parallel tiled linear algebra algorithms for multicore architectures
TL;DR: Algorithms for the Cholesky, LU and QR factorization where the operations can be represented as a sequence of small tasks that operate on square blocks of data are presented.
Journal ArticleDOI
Numerical linear algebra on emerging architectures: The PLASMA and MAGMA projects
Emmanuel Agullo,James Demmel,Jack Dongarra,Bilel Hadri,Jakub Kurzak,Julien Langou,Hatem Ltaief,Piotr Luszczek,Stanimire Tomov +8 more
TL;DR: A comparative study of PLASMA's performance against established linear algebra packages and some preliminary results of MAGMA on hybrid multi-core and GPU systems is presented.
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Communication-optimal Parallel and Sequential QR and LU Factorizations
TL;DR: Two parallel and sequential dense QR factorization algorithms that are both optimal (up to polylogarithmic factors) in the amount of communication they perform, and just as stable as Householder QR are presented.
Posted Content
Communication-optimal parallel and sequential QR and LU factorizations
TL;DR: In this article, the authors present parallel and sequential dense QR factorization algorithms that are both optimal (up to polylogarithmic factors) in the amount of communication they perform, and just as stable as Householder QR.
Journal ArticleDOI
Algorithm-based fault tolerance applied to high performance computing
TL;DR: A careful adaptation of the Algorithmic Based Fault Tolerance technique to the need of parallel distributed computation results in a strongly scalable mechanism for fault tolerance that can also detect and correct errors on the fly of a computation.