Date: Tue, 20 Aug 1996 18:17:46 +0200 (MET DST) From: Christoph Kukulies <kuku@gilberto.physik.rwth-aachen.de> To: bde@zeta.org.au (Bruce Evans) Cc: freebsd-hackers@freefall.freebsd.org, kuku@gilberto.physik.rwth-aachen.de Subject: Re: max math performance - how? Message-ID: <199608201617.SAA02640@gilberto.physik.rwth-aachen.de> In-Reply-To: <199608201445.AAA32287@godzilla.zeta.org.au> from Bruce Evans at "Aug 21, 96 00:45:39 am"
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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?) > > 386BSD used libm, which is slow. -current uses msun, which is > slower, except possibly if it is compiled with option HAVE_FPU. That's what I did before these measurements: /etc/make.conf HAVE_FPU, cd /usr/src/lib/msun, make cleandir depend all install > > Bruce > --Chris Christoph P. U. Kukulies kuku@gil.physik.rwth-aachen.de
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