Bug 98070 - math/umfpack: use BLAS instead of ATLAS by default
Summary: math/umfpack: use BLAS instead of ATLAS by default
Status: Closed FIXED
Alias: None
Product: Ports & Packages
Classification: Unclassified
Component: Individual Port(s) (show other bugs)
Version: Latest
Hardware: Any Any
: Normal Affects Only Me
Assignee: freebsd-ports-bugs (Nobody)
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2006-05-29 05:10 UTC by giffunip
Modified: 2006-05-29 21:36 UTC (History)
0 users

See Also:


Attachments
file.diff (2.14 KB, patch)
2006-05-29 05:10 UTC, giffunip
no flags Details | Diff

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Description giffunip 2006-05-29 05:10:17 UTC
I used to recommend the use of ATLAS over the standard fortran BLAS. Unfortunately for some time we are not packaging ATLAS anymore, and very recently the source code of GotoBLAS has been made available for research purposes. GotoBLAS is said to be faster than ATLAS and the shared library is exchangeable with the standard BLAS. Curiously the standard BLAS is known to beat both GotoBLAS and ATLAS when the problems are not too complex, so I expect it's better for beginners.

I am hereto recommending the use of shared blas by default but leaving a WITH_ATLAS knob in case someone doesn't have access to GotoBLAS and wants to try to squeeze some more performance.

How-To-Repeat: BTW, I am also aware there is a new version of umfpack, but it's now LGPL'd and it requires other ports to work so it's not very high in my priorities at the time.
Comment 1 Thierry Thomas freebsd_committer freebsd_triage 2006-05-29 21:35:52 UTC
State Changed
From-To: open->closed


Committed, thanks! 
(with minor modifications)