MIME-Version: 1.0 Server: CERN/3.0 Date: Sunday, 24-Nov-96 23:03:10 GMT Content-Type: text/html Content-Length: 881 Last-Modified: Thursday, 17-Oct-96 19:55:18 GMT PSSLS: Parallel Solution of Sparse Least Squares Problems

PSSLS(Parallel Solution of Sparse Least Squares Problems) is a sparse matrix package for solving large, sparse, linear least squares problems on distributed-memory machines. This package is implemented in ANSI C using double-precision arithmetic. The IBM Message-Passing Library(MPL) is used for communication among processors.

PSSLS is a parallel direct sparse solver. To solve a sparse linear least squares problem, a sparse QR decomposition is computed. Then a sparse triangular system is solved. Both the sparse QR factorization and the triangular solution are carried out by a blocked-oriented parallel multifrontal scheme. A user's guide to PSSLS is available here. For further information regarding PSSLS, please contact the author(csun@cs.cornell.edu).