|Anonymous | Login | Signup for a new account||2017-03-30 07:54 MSK|
|Main | My View | View Issues | Change Log | Roadmap | Docs|
|Viewing Issue Simple Details|
|ID||Category||Severity||Reproducibility||Date Submitted||Last Update|
|0000442||[ALGLIB] Linear algebra||feature||have not tried||2012-01-29 13:54||2012-02-15 10:22|
|Summary||0000442: Efficiently handle zero elements during triangular/orthogonal factorization|
Dense Level 2 LU/QR/... performance on sparse matrices stored in the dense form can be significantly improved.
The idea is to skip rows of rank-1 updates which have zero coefficients. It can be done with just one "if", its cost is insignificant, and it can have major performance consequences on some types of the matrices.
|There are no notes attached to this issue.|
|2012-01-29 13:54||SergeyB||New Issue|
|2012-01-29 13:54||SergeyB||Programming language||=> Unspecified|
|2012-02-15 10:22||SergeyB||Target Version||3.6.0 => Near future|
|Mantis 1.1.6[^] Copyright © 2000 - 2008 Mantis Group|