Date: Tue, 20 Aug 1996 15:20:25 +0200 From: Christoph Kukulies <kuku@gilberto.physik.rwth-aachen.de> To: freebsd-hackers@freefall.FreeBSD.org Subject: max math performance - how? Message-ID: <199608201320.PAA01722@gilberto.physik.rwth-aachen.de>
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I digged out a scientific test I compiled some time back in 386bsd times. At that time I hacked around with different libms and I had a binary lying around (statically linked) which outperforms every newly linked version of that benchmark. (It is a bunch of fortran programs, the so called 'Lund' benchmark from Lund University - a program that physicists are mainly interested in seeing perform fast). Now I have no idea what I did at that time - maybe I took some early verrsion of the libmsun or was there something different in 386bsd days (Bruce?) Anyway, with g77 or f77 (f2c) I get time lundtst 5.085u 0.015s 0:07.66 66.4% 545+402k 0+0io 0pf+0w time lundtst.withnormal.libm 7.032u .... time lundtst.static.386bsd 4.184u 0.023s 0:05.61 74.8% 454+422k 0+0io 0pf+0w That means with some unknown old method I'm getting around 20% better performance. Now give me back that mathlib :-) --Chris Christoph P. U. Kukulies kuku@gil.physik.rwth-aachen.de
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