Julien Langou

发表

Computing the R of the QR factorization of tall and skinny matrices using MPI_Reduce

Julien Langou, J. Langou, 2010, 1002.4250.

Abstract: Matrices Over Runtime Systems at Exascale

George Bosilca, Emmanuel Agullo, Matthias Messner, 2012, 2012 SC Companion: High Performance Computing, Networking Storage and Analysis.

Parallel tiled QR factorization for multicore architectures

Jack Dongarra, Julien Langou, Alfredo Buttari, 2008 .

LAPACK Working Note #224 QR Factorization of Tall and Skinny Matrices in a Grid Computing Environment

Emmanuel Agullo, Camille Coti, Julien Langou, 2009 .

Parallel tiled QR factorization for multicore architectures

Julien Langou, Jack J. Dongarra, Alfredo Buttari, 2007, Concurr. Comput. Pract. Exp..

Fault tolerant high performance computing by a coding approach

George Bosilca, Zizhong Chen, Julien Langou, 2005, PPoPP.

Distributed-Memory Task Execution and Dependence Tracking within DAGuE and the DPLASMA Project

George Bosilca, Jack Dongarra, Julien Langou, 2010 .

Poster: Matrices over Runtime Systems at Exascale

George Bosilca, Emmanuel Agullo, Matthias Messner, 2012, 2012 SC Companion: High Performance Computing, Networking Storage and Analysis.

Tiled QR factorization algorithms

Yves Robert, Mathias Jacquelin, Julien Langou, 2011, 2011 International Conference for High Performance Computing, Networking, Storage and Analysis (SC).

Computing the conditioning of the components of a linear least-squares solution

Julien Langou, Jack J. Dongarra, Serge Gratton, 2009, Numer. Linear Algebra Appl..

Fast Parallel Randomized QR with Column Pivoting Algorithms for Reliable Low-Rank Matrix Approximations

Ming Gu, Julien Langou, Jianwei Xiao, 2017, 2017 IEEE 24th International Conference on High Performance Computing (HiPC).

A distributed packed storage for large dense parallel in‐core calculations

Julien Langou, Luc Giraud, Serge Gratton, 2007, Concurr. Comput. Pract. Exp..

Algorithm-based fault tolerance applied to high performance computing

George Bosilca, Julien Langou, Jack J. Dongarra, 2009, J. Parallel Distributed Comput..

Rounding error analysis of the classical Gram-Schmidt orthogonalization process

Julien Langou, Luc Giraud, Miroslav Rozlozník, 2005, Numerische Mathematik.

A Rank-k Update Procedure for Reorthogonalizing the Orthogonal Factor from Modified Gram-Schmidt

Julien Langou, Luc Giraud, Serge Gratton, 2004, SIAM J. Matrix Anal. Appl..

A Makespan Lower Bound for the Tiled Cholesky Factorization Based on ALAP Schedule

Julien Langou, Olivier Beaumont, Willy Quach, 2020, Euro-Par.

LAPACK Working Note 93 Installation Guide for ScaLAPACK1

Jack Dongarra, Julien Langou, L. S. Blackford, 1995 .

QCG-OMPI: MPI applications on grids

Thomas Hérault, Franck Cappello, Emmanuel Agullo, 2011, Future Gener. Comput. Syst..

Flexible Development of Dense Linear Algebra Algorithms on Massively Parallel Architectures with DPLASMA

Thomas Hérault, George Bosilca, Julien Langou, 2011, 2011 IEEE International Symposium on Parallel and Distributed Processing Workshops and Phd Forum.

The Problem With the Linpack Benchmark 1.0 Matrix Generator

Julien Langou, Jack J. Dongarra, J. Dongarra, 2009, Int. J. High Perform. Comput. Appl..

Distibuted Dense Numerical Linear Algebra Algorithms on Massively Parallel Architectures: DPLASMA

Jack Dongarra, Julien Langou, Hatem Ltaief, 2011 .

Hash Functions for Datatype Signatures in MPI

George Bosilca, Julien Langou, Jack J. Dongarra, 2005, PVM/MPI.

A Critical Path Approach to Analyzing Parallelism of Algorithmic Variants. Application to Cholesky Inversion pdf

Julien Langou, Henricus Bouwmeester, J. Langou, 2010, ArXiv.

The Impact of Multicore on Math Software

Julien Langou, Jack J. Dongarra, Stanimire Tomov, 2006, PARA.

Performance Optimization and Modeling of Blocked Sparse Kernels

Victor Eijkhout, Julien Langou, Alfredo Buttari, 2007, Int. J. High Perform. Comput. Appl..

Rectangular full packed format for cholesky's algorithm: factorization, solution, and inversion pdf

Julien Langou, Jack J. Dongarra, Fred G. Gustavson, 2009, TOMS.

NanoPSE: Nanoscience Problem Solving Environment for atomistic electronic structure of semiconductor nanostructures

Jack Dongarra, Julien Langou, Lin-Wang Wang, 2005 .

Parallel Dense Linear Algebra Software in the Multicore Era

Jack Dongarra, Julien Langou, Alfredo Buttari, 2009 .

Parallel Linear Algebra Software

Victor Eijkhout, Jack Dongarra, Julien Langou, 2006, Parallel Processing for Scientific Computing.

A Makespan Lower Bound for the Scheduling of the Tiled Cholesky Factorization based on ALAP scheduling pdf

Julien Langou, Willy Quach, J. Langou, 2015, ArXiv.

Self-adapting numerical software (SANS) effort

Victor Eijkhout, Erika Fuentes, Zizhong Chen, 2006, IBM J. Res. Dev..

How LAPACK library enables Microsoft Visual Studio support with CMake and LAPACKE

Julien Langou, Brad King, Bill Hoffman, 2012 .

Disaster Survival Guide in Petascale Computing: An Algorithmic Approach

Jack Dongarra, George Bosilca, Zizhong Chen, 2013 .

The Cycle-Convergence of Restarted GMRES for Normal Matrices Is Sublinear

Julien Langou, Eugene Vecharynski, J. Langou, 2008, SIAM J. Sci. Comput..

Bidiagonalization with Parallel Tiled Algorithms pdf

Yves Robert, Julien Langou, Jack J. Dongarra, 2016, ArXiv.

Any admissible cycle‐convergence behavior is possible for restarted GMRES at its initial cycles

Julien Langou, Eugene Vecharynski, J. Langou, 2011, Numer. Linear Algebra Appl..

Hierarchical QR factorization algorithms for multi-core clusters

Thomas Hérault, Yves Robert, Mathias Jacquelin, 2013, Parallel Comput..

Mixed Precision Iterative Refinement Techniques for the Solution of Dense Linear Systems

Julien Langou, Jack J. Dongarra, Piotr Luszczek, 2007, Int. J. High Perform. Comput. Appl..

A Class of Parallel Tiled Linear Algebra Algorithms for Multicore Architectures

Julien Langou, Jack J. Dongarra, Alfredo Buttari, 2007, Parallel Comput..

Conjugate-gradient eigenvalue solvers in computing electronic properties of nanostructure architectures

Julien Langou, Jack J. Dongarra, Stanimire Tomov, 2006, Int. J. Comput. Sci. Eng..

Numerical linear algebra on emerging architectures: The PLASMA and MAGMA projects

Jack Dongarra, Emmanuel Agullo, Julien Langou, 2009 .

2016 Dense Linear Algebra Software Packages Survey

Jack Dongarra, James Demmel, Julien Langou, 2016 .

Accelerating scientific computations with mixed precision algorithms

Julien Langou, Jack J. Dongarra, Stanimire Tomov, 2008, Comput. Phys. Commun..

Algorithmic Based Fault Tolerance Applied to High Performance Computing pdf

George Bosilca, Julien Langou, Jack J. Dongarra, 2008, ArXiv.

A backward/forward recovery approach for the preconditioned conjugate gradient method pdf

Yves Robert, Julien Langou, Bora Uçar, 2015, J. Comput. Sci..

Automated derivation of parametric data movement lower bounds for affine programs

Julien Langou, P. Sadayappan, Fabrice Rastello, 2019, PLDI.

Topic 10: Parallel Numerical Algorithms - (Introduction)

Laura Grigori, Julien Langou, Marián Vajtersic, 2013, Euro-Par.

Hierarchical QR Factorization Algorithms for Multi-core Cluster Systems

Thomas Hérault, Yves Robert, Julien Langou, 2011, 2012 IEEE 26th International Parallel and Distributed Processing Symposium.

Mixing LU and QR factorization algorithms to design high-performance dense linear algebra solvers

Yves Robert, Julien Langou, Jack J. Dongarra, 2015, J. Parallel Distributed Comput..

A distributed packed storage for large dense parallel in-core calculations: Research Articles

Julien Langou, Luc Giraud, Serge Gratton, 2007 .

A note on the error analysis of classical Gram–Schmidt

Julien Langou, Jesse L. Barlow, Alicja Smoktunowicz, 2006, Numerische Mathematik.

Parallel Tiled QR Factorization for Multicore Architectures

Julien Langou, Jack J. Dongarra, Alfredo Buttari, 2007, PPAM.

Algorithm 842: A set of GMRES routines for real and complex arithmetics on high performance computers

Julien Langou, Luc Giraud, Serge Gratton, 2005, TOMS.

Towards an Efficient Tile Matrix Inversion of Symmetric Positive Definite Matrices on Multicore Architectures

Emmanuel Agullo, Julien Langou, Jack J. Dongarra, 2010, VECPAR.

New eigensolvers and preconditioners for large scale nanoscience simulations

Julien Langou, Stanimire Tomov, Andrew Canning, 2006 .

Prospectus for a Dense Linear Algebra Software Library

James Demmel, William Kahan, Julien Langou, 2007, Handbook of Parallel Computing.

Flexible Variants of Block Restarted GMRES Methods with Application to Geophysics

Henri Calandra, Julien Langou, Serge Gratton, 2012, SIAM J. Sci. Comput..

Prospectus for the Next LAPACK and ScaLAPACK Libraries

James Demmel, William Kahan, Julien Langou, 2006, PARA.

Advanced MPI Programming

George Bosilca, Julien Langou, 2007, PVM/MPI.

Communication-optimal Parallel and Sequential QR and LU Factorizations

James Demmel, Laura Grigori, Julien Langou, 2008, SIAM J. Sci. Comput..

Convergence in Backward Error of Relaxed GMRES

Julien Langou, Luc Giraud, Serge Gratton, 2007, SIAM J. Sci. Comput..

Recent Advances in Dense Linear Algebra: Minisymposium Abstract

Julien Langou, Daniel Kressner, 2006, PARA.

ON THE PARALLEL SOLUTION OF LARGE INDUSTRIAL WAVE PROPAGATION PROBLEMS

Julien Langou, Luc Giraud, G. Sylvand, 2005 .

Communication-avoiding parallel and sequential QR factorizations pdf

James Demmel, Laura Grigori, Julien Langou, 2008, ArXiv.

Bidiagonalization and R-Bidiagonalization: Parallel Tiled Algorithms, Critical Paths and Distributed-Memory Implementation

Yves Robert, Julien Langou, Jack J. Dongarra, 2017, 2017 IEEE International Parallel and Distributed Processing Symposium (IPDPS).

Summary of Software for Linear Algebra Freely Available on the Web

Victor Eijkhout, Jack Dongarra, Julien Langou, 2006 .

Recovery Patterns for Iterative Methods in a Parallel Unstable Environment

George Bosilca, Zizhong Chen, Julien Langou, 2007, SIAM J. Sci. Comput..

Low synchronization GMRES algorithms pdf

Shreyas Ananthan, Julien Langou, Stephen Thomas, 2018, ArXiv.

QR factorization of tall and skinny matrices in a grid computing environment

Thomas Hérault, Emmanuel Agullo, Camille Coti, 2009, 2010 IEEE International Symposium on Parallel & Distributed Processing (IPDPS).

Level-3 Cholesky Factorization Routines Improve Performance of Many Cholesky Algorithms

Julien Langou, Jack J. Dongarra, Fred G. Gustavson, 2013, TOMS.

Tools and techniques for performance - Exploiting the performance of 32 bit floating point arithmetic in obtaining 64 bit accuracy (revisiting iterative refinement for linear systems)

Julien Langou, Jack J. Dongarra, Piotr Luszczek, 2006, SC.

LU factorization for accelerator-based systems

Emmanuel Agullo, Cédric Augonnet, Julien Langou, 2011, 2011 9th IEEE/ACS International Conference on Computer Systems and Applications (AICCSA).

software (SANS) effort

Victor Eijkhout, Erika Fuentes, Jack Dongarra, 2006 .

Building fault surviv-able mpi programs with ft-mpi using diskless-checkpointing

Jack Dongarra, George Bosilca, Zizhong Chen, 2005 .

A Greedy Algorithm for Optimally Pipelining a Reduction pdf

Julien Langou, Bradley R. Lowery, J. Langou, 2013, ArXiv.

Designing LU-QR Hybrid Solvers for Performance and Stability

Yves Robert, Julien Langou, Jack J. Dongarra, 2014, 2014 IEEE 28th International Parallel and Distributed Processing Symposium.

Exploiting Mixed Precision Floating Point Hardware in Scientific Computations

Julien Langou, Jack J. Dongarra, Stanimire Tomov, 2006, High Performance Computing Workshop.

Multithreading in the PLASMA Library

Jack Dongarra, Julien Langou, Piotr Luszczek, 2014 .

A Robust Criterion for the Modified Gram-Schmidt Algorithm with Selective Reorthogonalization

Julien Langou, Luc Giraud, 2003, SIAM J. Sci. Comput..

The Problem with the Linpack Benchmark Matrix Generator

Jack Dongarra, Julien Langou, 2008 .

Comparison of Nonlinear Conjugate-Gradient Methods for Computing the Electronic Properties of Nanostructure Architectures

Julien Langou, Jack J. Dongarra, Stanimire Tomov, 2005, International Conference on Computational Science.

Low-Synch Gram-Schmidt with Delayed Reorthogonalization for Krylov Solvers pdf

Julien Langou, Ichitaro Yamazaki, Erik G. Boman, 2021, ArXiv.

Low synchronization Gram–Schmidt and generalized minimal residual algorithms

Shreyas Ananthan, Julien Langou, Ulrike Meier Yang, 2020, Numer. Linear Algebra Appl..

Performance evaluation of eigensolvers in nanostructurecomputations

Jack Dongarra, Julien Langou, Stanimire Tomov, 2006 .

Using spectral low rank preconditioners for large electromagnetic calculations

Julien Langou, Luc Giraud, Iain S. Duff, 2005 .

ROBUST SELECTIVE GRAM-SCHMIDT REORTHOGONALIZATION

Julien Langou, Luc Giraud, 2002 .

Stability Analysis of QR factorization in an Oblique Inner Product

Julien Langou, Bradley R. Lowery, J. Langou, 2014, 1401.5171.

Preconditioned iterative methods for linear systems, eigenvalue and singular value problems

Julien Langou, Eugene Vecharynski, Andrew Knyazev, 2011 .

Solving large linear systems with multiple right-hand sides

Julien Langou, J. Langou, 2003 .

On matrix balancing and eigenvector computation

Julien Langou, Bradley R. Lowery, Rodney James, 2014 .

Towards bulk based preconditioning for quantum dot computations

Jack Dongarra, Julien Langou, Stanimire Tomov, 2006 .

Parallel Tiled QR Factorization for Multicore Architectures LAPACK Working Note # 190

Jack Dongarra, Julien Langou, Alfredo Buttari, 2007 .