On 12/03/2015 13:43, Tomáš Greif wrote:
How BLAS and LAPACK are related, does R need both?
Both.
I am trying to understsand different BLAS options in R and I am quite not
sure if LAPACK is part of BLAS, or separate library or something else.
Based on http://www.netlib.org/lapack/ it looks like LAPACK is some kind of
BLAS extension ("LAPACK routines are written so that as much as possible of
the computation is performed by calls to the Basic Linear Algebra
Subprograms (BLAS)").
No, LAPACK is a set of routines distinct from BLAS. However, the
standard LAPACK tarball includes a reference set of BLAS routines which
are also available separately. Hence some confusion. But the confusion
is that BLAS is part of LAPACK, not v.v.
This is not an R-help topic (see the posting guide, including what it
says about HTML mail).
Tomas
[[alternative HTML version deleted]]
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
--
Brian D. Ripley, rip...@stats.ox.ac.uk
Emeritus Professor of Applied Statistics, University of Oxford
1 South Parks Road, Oxford OX1 3TG, UK
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
