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From: graichen@omega.physik.fu-berlin.de (Thomas Graichen)
Subject: Re: slow math library
Message-ID: <QZNUB1RW@math.fu-berlin.de>
Sender: news@math.fu-berlin.de (Math Department)
Nntp-Posting-Host: omega.physik.fu-berlin.de
Organization: Free University of Berlin, Germany
References: <EYMUB1UR@math.fu-berlin.de>
Date: Tue, 22 Nov 1994 11:13:48 GMT
Lines: 41
graichen@omega.physik.fu-berlin.de (Thomas Graichen) writes:
>hello
>-----
>in the last day's i tried freebsd (1.1) - i think it's really good and more
>consistent than all the linux distributions i've used before but i've found
>one problem for me - the math-library (floating-point-operations) seem to be
>very slow (factor 2-4 slower like under linux on the same machine) - i've
>also tried the msun lib (from 1.1.5) - but i can't see the big improvement -
>but floating point speed is important for me because i do mostly numerical
>stuff on that machine - can anybody tell me if there is a faster math-lib
>for freebsd - or if not - can somebody who knows something about this try to
>improve the mathlib
>t
>p.s.: i've compiled the msun lib with the HAVE_FPU define compiled - that
>is'nt the error
sorry - i've found my mistake now - at first: the msun-lib is faster than
the standard freebsd libm and secondly (my mistake): if you compile it with
the HAVE_FPU (i had a typo in the definition) it again faster - and it is as
fast as the one under linux - this way the problem is solved using the msun
lib - thanks to jean-marc zucconi
thomas
______________________________________________________||______________________
__||
Perfection is reached, not when there is no __|| thomas graichen
longer anything to add, but when there __|| freie universitaet berlin
is no longer anything to take away __|| fachbereich physik
__||
- Antoine de Saint-Exupery - __||
___________________________||____email: graichen@omega.physik.fu-berlin.de____
--
______________________________________________________||______________________
__||
Perfection is reached, not when there is no __|| thomas graichen