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Routines for solving unsymmetric sparse linear systems

  • 'SuiteSparse' is a suite of sparse matrix algorithms, including: '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.



Verified by

Verified on


Verified by

Janet Casey

Verified on

30 January 2003

Leaders and contributors

Esmond Ng Contributor
John Gilbert Contributor
Stefan Larimore Contributor
Timothy Davis Maintainer
Patrick Amestoy Contributor
Steven Hadfield Contributor
Iain Duff Contributor

Resources and communication

AudienceResource typeURI
Bug Tracking,Developer,

Software prerequisites

Weak prerequisiteBLAS package (program runs considerably slower without this)


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