Solves a set of sparse, symmetric linear equations using a conjugate gradient type method.

Software by Rasmus Munk Larsen for large and sparse SVD calculations, with versions in Fortran and Matlab.

Fortran 77 subroutines for solving large sparse linear systems by adaptive accelerated iterative algorithms.

Includes a block-band matrix solver and a Fortran 90 makefile with corresponding dependency generator. By Udo Grabowski.

Fortran 77 source code for solving sparse asymmetric linear equations, including a version for complex matrices. There are copyright restrictions.

Fortran 90 modules by Ernst Meese for the compressed sparse row (CSR) and the modified sparse row (MSR) data storage formats, a very general incomplete LU factorisation routine, the Krylov subspace solvers CGS, BiCGSTAB and GMRES.

The optimqr program will read a description of the sparsity pattern of some system matrix for system of linear equations. It will then apply heuristic branch and bound search to find a near-optimal ordering of the rows and columns of the system matrix...

Solves sparse linear equations using a conjugate-gradient type method.