UMFPACK

UMFPACK is a set of routines for solving unsymmetric sparse linear systems, Ax=b, using the Unsymmetric MultiFrontal method. It uses dynamic memory allocation, and has a symbolic preordering and analysis phase that also reports the upper bounds on the nonzeros in L and U, flop count, and memory usage in the numeric phase. It can be used for real and complex matrices, rectangular and square, and both non-singular and singular.

Last updated 1 Jul, 2008


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BSD_2Clause

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Requirements
  • BLAS package (program runs considerably slower without this) (Weak Prerequisite)

Versions

4.4

4.4 stable released 2005-01-28

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User guide included and available in PDF format from http://www.cise.ufl.edu/research/sparse/umfpack/v4.3/UMFPACKv4.3/UMFPACK/Doc/UserGuide.pdf; User quickstart available in PDF format from http://www.cise.ufl.edu/research/sparse/umfpack/v4.3/UMFPACKv4.3/UMFPACK/Doc/QuickStart.pdf

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Please send comments on these web pages to bug-directory@fsf.org, send other questions to info@fsf.org.

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