Compare Fortran. Buy Fortran at Shopping.com.

Code by Yousef Saad and Jun Zhang to solve general sparse linear systems by using Krylov subspace methods preconditioned by some multi-level block ILU (BILUM) preconditioning techniques.

By Udo Grabowski.

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

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

Provides computational kernels for fundamental sparse matrix operations.

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

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 & bound search to find a near-optimal ordering of the rows and columns of the system matrix. The ordering is written to disk. The codegen.pl program can then read the system ordering, and create a solver written in Fortran 77, that will solve the system using sparse QR factorization (using Givens rotations).

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

By Yousef Saad and Kesheng Wu.

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.

Fortran 77 code for sparse matrix multiplication, transposition, and format conversion.

General purpose Fortran library by Yousef Saad for sparse matrix computations.

Comprised of four numerical (iterative) methods for computing the singular value decomposition (SVD) of large sparse matrices using double precision Fortran 77.

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

Code for sparse linear equations (symmetric or general) and sparse least squares, and updating a dense square factorization L C = U.

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

Fortran 77 code that solves sparse systems of linear algebraic equations by Gaussian elimination.