Parallel performance of Jacobi eigenvalue solution

Abstract

In this paper we focus on Jacobi like resolution of the eigenproblem for a real symmetric matrix from a parallel performance point of view: we try to optimize the algorithm working on the communication intensive part of the code. We discuss several parallel implementations and propose an implementation which overlaps the communications by the computations to reach a better efficiency. We show that the overlapping implementation can lead to significant improvements. We conclude by presenting our future work.