SPRAL Homepage

The Sparse Parallel Robust Algorithms Library (SPRAL) is an open-source library for sparse linear algebra and associated algorithms.

At present, the library offers the following packages:

RANDOM_MATRIX: Generates random matrices for testing purposes
SCALING: Calculates matrix scalings through a variety of algorithms
SSIDS: Sparse Symmetric Indefinte Direct Solver.
SSMFE: Sparse Symmetric Matrix-Free Eigensolver.
LSMR: Solves sparse least squares problems using the LSMR algorithm.

SPRAL Documentation

For detailed information about the SPRAL packages and API see:

Fortran Documentation

C Documentation

If the functionality you are looking for is not supported, it may be offered by our proprietary licenced HSL library (free to academics).

For more information about SPRAL, please contact hsl@stfc.ac.uk.