From: Brian Gough <bjg@network-theory.co.uk>
To: Henry Sobotka <sobotka@axess.com>
Cc: gsl-discuss@sources.redhat.com
Subject: Re: gsl_multifit
Date: Wed, 19 Dec 2001 13:20:00 -0000 [thread overview]
Message-ID: <15311.64643.841991.415839@debian> (raw)
In-Reply-To: <3BCF554D.D5A@axess.com>
Henry Sobotka writes:
> Brian Gough wrote:
> >
> > For extra speed try recompiling the library with -DGSL_RANGE_CHECK_OFF=1.
> > Range checking is currently enabled by default, for safety, and puts an
> > overhead on every matrix/vector operation.
>
> Brian, are there any other similar macros that can be turned off at
> compiletime for performance gains?
No. That is the only macro, apart from HAVE_INLINE which is turned on
by default.
The only other optimization I have up my sleeve is to introduce more
use of BLAS functions. There are quite a few places where the code
uses a for-loop instead of calling the corresponding BLAS routine.
Brian
next prev parent reply other threads:[~2001-12-19 13:20 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-19 13:20 gsl_multifit Mikael Adlers
2001-12-19 13:20 ` gsl_multifit Kai Trukenmueller
2001-12-19 13:20 ` gsl_multifit Brian Gough
2001-12-19 13:20 ` gsl_multifit Henry Sobotka
2001-12-19 13:20 ` Brian Gough [this message]
2001-12-19 13:20 ` gsl_multifit Dirk Eddelbuettel
-- strict thread matches above, loose matches on Subject: below --
2001-12-19 13:20 gsl_multifit Kai Trukenmueller
2001-12-19 13:20 ` gsl_multifit Brian Gough
2001-12-19 13:20 ` gsl_multifit Kai Trukenmueller
2001-12-19 13:20 ` gsl_multifit Brian Gough
2001-12-19 13:20 gsl_multifit Mikael Adlers
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