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SpTriSolve

5.0

5.0 | 1 rating Rate this file 2 Downloads (last 30 days) File Size: 2.75 KB File ID: #25253

SpTriSolve

07 Sep 2009 (Updated 06 Jan 2011)

Sparse triangular solve

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File Information
Description	Implements sparse triangular solve as a MEX function, thus is much faster than \. Useful for iterative methods (to apply a factored preconditioner).
MATLAB release	MATLAB 7.4 (R2007a)

Tags for This File
Everyone's Tags	linear system solve, numerical linear algebra, sparse matrix
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Comments and Ratings (1)
26 Jan 2011	Stefan	Thanks a lot, this function does a great job! The sptrisolve function is really much faster than the \. I observed a speedup factor of 7 for my ILU-preconditioned BiCG method and a factor of 4.7 in case of ILU-preconditioned BiCGSTAB. Now preconditioning not only reduces the number of iterates, but also computing time.

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Updates
08 Sep 2009	Removed binary .mexw32
04 Jan 2011	Now works with -largeArryDims (required on 64-bit machines).
06 Jan 2011	More bug fixes.

Tag Activity for this File
Tag	Applied By	Date/Time
numerical linear algebra	Haim Avron	08 Sep 2009 16:54:20
sparse matrix	Haim Avron	08 Sep 2009 16:54:21
linear system solve	Haim Avron	08 Sep 2009 16:54:21

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