Lars Karlsson

Universitetspedagogiska konferensen 2019: Helhetssyn på undervisning - kropp, känsla och kognition i akademin, Umeå: Universitetspedagogik och lärandestöd (UPL), Umeå universitet 2019 : 21-21

Karlsson, Lars; Pettersson, Jonny

Parallel robust solution of triangular linear systems

Concurrency and Computation, John Wiley & Sons 2019, Vol. 31, (19)

Kjelgaard Mikkelsen, Carl Christian; Schwarz, Angelika Beatrix; Karlsson, Lars

D7.8 Release of the NLAFET library

NLAFET Consortium; Umeå University 2019

Kågström, Bo; Myllykoski, Mirko; Karlsson, Lars; et al.

Scalable eigenvector computation for the non-symmetric eigenvalue problem

Parallel Computing, Elsevier 2019, Vol. 85 : 131-140

Schwarz, Angelika Beatrix; Karlsson, Lars

Distributed one-stage Hessenberg-triangular reduction with wavefront scheduling

SIAM Journal on Scientific Computing, Society for Industrial and Applied Mathematics 2018, Vol. 40, (2) : C157-C180

Adlerborn, Björn; Karlsson, Lars; Kågström, Bo

A Householder-Based Algorithm for Hessenberg-Triangular Reduction

SIAM Journal on Matrix Analysis and Applications, SIAM Publications 2018, Vol. 39, (3) : 1270-1294

Bujanović, Zvonimir; Karlsson, Lars; Kressner, Daniel

On the Tunability of a New Hessenberg Reduction Algorithm Using Parallel Cache Assignment

Parallel Processing and Applied Mathematics. PPAM 2017: Part 1, Springer 2018 : 579-589

Eljammaly, Mahmoud; Karlsson, Lars; Kågström, Bo

An auto-tuning framework for a NUMA-aware Hessenberg reduction algorithm

ICPE '18 Companion of the 2018 ACM/SPEC International Conference on Performance Engineering, ACM Digital Library 2018 : 5-8

Eljammaly, Mahmoud; Karlsson, Lars; Kågström, Bo

Blocked Algorithms for Robust Solution of Triangular Linear Systems

Parallel Processing and Applied Mathematics: 12th International Conference, PPAM 2017, Lublin, Poland, September 10-13, 2017, Revised Selected Papers, Part I, Springer 2018 : 68-78

Kjelgaard Mikkelsen, Carl Christian; Karlsson, Lars

D2.6 Prototype Software for Eigenvalue Problem Solvers

NLAFET Consortium; Umeå University 2018

Myllykoski, Mirko; Karlsson, Lars; Kågström, Bo; et al.

Towards Highly Parallel and Compute-Bound Computation of Eigenvectors of Matrices in Schur Form

Report / UMINF, 17.10

Adlerborn, Björn; Kjelgaard Mikkelsen, Carl Christian; Karlsson, Lars; et al.

Parallel and Heterogeneous $m$-Hessenberg-Triangular-Triangular Reduction

SIAM Journal on Scientific Computing, Vol. 39, (1) : C29-C47

Bosner, Nela; Karlsson, Lars

An auto-tuning framework for a NUMA-aware Hessenberg reduction algorithm

Report / UMINF, 17.19

Eljammaly, Mahmoud; Karlsson, Lars; Kågström, Bo

Negative stride in the column-major format makes sense and has useful applications

Report / UMINF, 17.17

Karlsson, Lars; Kjelgaard Mikkelsen, Carl Christian

Robust Solution of Triangular Linear Systems

Report / UMINF, 17.09

Kjelgaard Mikkelsen, Carl Christian; Karlsson, Lars

D2.5 Eigenvalue problem solvers

NLAFET 2017

Kjelgaard Mikkelsen, Carl Christian; Myllykoski, Mirko; Adlerborn, Björn; et al.

Task-Based Parallel Algorithms for Eigenvalue Reordering of Matrices in Real Schur Forms

Report / UMINF, 17.11

Myllykoski, Mirko; Kjelgaard Mikkelsen, Carl Christian; Karlsson, Lars; et al.

Distributed one-stage Hessenberg-triangular reduction with wavefront scheduling

Report / UMINF, 16.10

Adlerborn, Björn; Kågström, Bo; Karlsson, Lars

A library for storing and manipulating dense tensors

Report / UMINF, 17.22

Eljammaly, Mahmoud; Karlsson, Lars

Evaluation of the Tunability of a New NUMA-Aware Hessenberg Reduction Algorithm

Report / UMINF, 16.21

Eljammaly, Mahmoud; Karlsson, Lars; Kågström, Bo

Parallel algorithms for tensor completion in the CP format

Parallel Computing, Vol. 57 : 222-234

Karlsson, Lars; Kressner, Daniel; Uschmajew, Andre

Algorithms for Hessenberg-Triangular Reduction of Fiedler Linearization of Matrix Polynomials

SIAM Journal on Scientific Computing, Vol. 37, (3) : C384-C414

Karlsson, Lars; Tisseur, Francoise

Improving Perfect Parallelism

Parallel Processing and Applied Mathematics: 10th International Conference, PPAM 2013, Warsaw, Poland, September 8-11, 2013, Revised Selected Papers, Part I, Springer Berlin/Heidelberg 2014 : 76-85

Karlsson, Lars; Kjelgaard Mikkelsen, Carl Christian; Kågström, Bo

Optimally Packed Chains of Bulges in Multishift QR Algorithms

ACM Transactions on Mathematical Software, Vol. 40, (2) : 12-

Karlsson, Lars; Kressner, Daniel; Lang, Bruno

Fine-Grained Bulge-Chasing Kernels for Strongly Scalable Parallel QR Algorithms

Parallel Computing, Elsevier 2014, (7) : 271-288

Karlsson, Lars; Kågström, Bo; Wadbro, Eddie

Parallel and Cache-Efficient In-Place Matrix Storage Format Conversion

ACM Transactions on Mathematical Software, New York: Association for Computing Machinery 2012, Vol. 38, (3) : 17:1-17:32

Gustavson, Fred; Karlsson, Lars; Kågström, Bo

Efficient Reduction from Block Hessenberg Form to Hessenberg Form Using Shared Memory

Applied parallel and scientific computing: Part II : 258-268