From owner-freebsd-hackers Tue Aug 20 07:47:12 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id HAA03763 for hackers-outgoing; Tue, 20 Aug 1996 07:47:12 -0700 (PDT) Received: from godzilla.zeta.org.au (godzilla.zeta.org.au [203.2.228.19]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id HAA03753 for ; Tue, 20 Aug 1996 07:47:07 -0700 (PDT) Received: (from bde@localhost) by godzilla.zeta.org.au (8.6.12/8.6.9) id AAA32287; Wed, 21 Aug 1996 00:45:39 +1000 Date: Wed, 21 Aug 1996 00:45:39 +1000 From: Bruce Evans Message-Id: <199608201445.AAA32287@godzilla.zeta.org.au> To: freebsd-hackers@freefall.freebsd.org, kuku@gilberto.physik.rwth-aachen.de Subject: Re: max math performance - how? Sender: owner-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk >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. Bruce