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Diffstat (limited to 'math/umfpack/pkg-descr')
| -rw-r--r-- | math/umfpack/pkg-descr | 30 |
1 files changed, 19 insertions, 11 deletions
diff --git a/math/umfpack/pkg-descr b/math/umfpack/pkg-descr index 6c105e99b54e..b31998a3ca0e 100644 --- a/math/umfpack/pkg-descr +++ b/math/umfpack/pkg-descr @@ -1,12 +1,20 @@ -UMFPACK Version 2.2 is a package for solving systems of sparse linear systems, -Ax=b, where A is sparse and can be unsymmetric. It is written in ANSI Fortran -77. There are options for choosing a good pivot order, factorizing a -subsequent matrix with the same pivot order and nonzero pattern as a -previously factorized matrix, and solving systems of linear equations with -the factors (with A, L, or U; or with their transposes in the single/double -precision versions). Iterative refinement, with sparse backward error -estimates, can be performed. Single and double precision, complex, and -complex double precision (complex*16) routines are available. (Note that -complex*16 is not ANSI Fortran-77, but is a common extension to it). +A package for solving systems of sparse linear systems Ax=b, where A is +sparse and can be unsymmetric. There are options for choosing a good +pivot order, factorizing a subsequent matrix with the same pivot order and +nonzero pattern as a previously factorized matrix, and solving systems of +linear equations with the factors (with A, L, or U; or with their +transposes in the single/double precision versions). Iterative +refinement, with sparse backward error estimates, can be performed. +Single and double precision, complex, and complex double precision +(complex*16) routines are available. -WWW: http://www.cise.ufl.edu/~davis/umfpack.html +WWW: http://www.cise.ufl.edu/research/sparse/umfpack/ + +This package also includes AMD, a set of routines for pre-ordering sparse +matrices prior to Cholesky or LU factorization using the aproximate +minimum degree ordering algorithm: + http://www.cise.ufl.edu/research/sparse/amd/ +_________ +Note: By default this port builds the C-callable interface using the CBLAS +interface from ATLAS, but other versions of BLAS could be used and there +is also a FORTRAN interface available. |