MUMPS

MUMPS Main Features:
- Solution of large linear systems with symmetric positive definite matrices, general symmetric matrices and general unsymmetric matrices
- Real or complex arithmetic (single or double precision)
- Parallel factorization and solve phases (uniprocessor version also available)
- Out of core numerical phases
- Iterative refinement and backward error analysis
- Various matrix input formats (assembled, distributed, elemental format)
- Partial factorization and Schur complement matrix (centralized or 2D block-cyclic)
- Interfaces to MUMPS: Fortran, C, Matlab and Scilab
- Several reorderings interfaced: AMD, QMAD, AMF, PORD, METIS, PARMETIS, SCOTCH, PT-SCOTCH
- Symmetric indefinite matrices: preprocesssing and 2-by-2 pivots
- Parallel analysis and matrix scaling
- Computation of the determinant (with an option to discard factors)
- Forward elimination during factorization