Team GRAAL

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Section: Software

MUMPS

Participants : Maurice Brémond, Indranil Chowdhury, Guillaume Joslin, Jean-Yves L'Excellent [correspondent] , Bora Uçar.

Mumps (for MUltifrontal Massively Parallel Solver, see http://graal.ens-lyon.fr/MUMPS ) is a software package for the solution of large sparse systems of linear equations. The development of Mumps was initiated by the European project PARASOL (Esprit 4, LTR project 20160, 1996-1999), whose results and developments were public domain. Since then, mainly in collaboration with ENSEEIHT-IRIT (Toulouse, France), lots of developments have been done, to enhance the software with more functionalities and integrate recent research work. Recent developments also involve the former Inria project ScAlAppliX since the recruitment of Abdou Guermouche as an assistant professor at LaBRI, while Cerfacs contributes to some research work.

Mumps implements a direct method, the multifrontal method, and is a parallel code for distributed memory computers; it is unique by the performance obtained and the number of functionalities available, among which we can cite:

Mumps is currently used by thousands of academic and industrial organizations, for a wide range of application fields (see Section  4.1 ). Mumps users include:

The latest release is Mumps 4.9.2, available since November 2009 (see http://graal.ens-lyon.fr/MUMPS/ ). Most of the work in 2010 has concerned development work related to projects and contracts, and software and validation issues, in the context of a Mumps Action of Technological Development called “ADT-MUMPS”.


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