Package Name | QMRPACK |
Author(s) | R. Freund and N. Nachtigal |
Version | no version info available |
Date | 1996 |
Language | Fortran 77 |
Platform(s) | any |
References |
7.8
Lanczos Method 7.11 Lanczos Method for Complex Symmetrix Eigenproblems |
Functionality | The quasi-minimal residual (QMR) algorithm is a Krylov-subspace method for the iterative solution of large non-Hermitian linear systems. QMR is based on the look-ahead Lanczos algorithm that, by itself, can also be used to obtain approximate eigenvalues of large non-Hermitian matrices. QMRPACK is a software package with FORTRAN77 implementations of the QMR algorithm and variants thereof, and of the three-term and coupled two-term look-ahead Lanczos algorithms. |
Location |
code:
http://www.netlib.org/linalg/qmr documentation: QMRPACK web site ACM Transactions on Mathematical Software, Vol. 22, no. 1, p. 46-77, 1996 |
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