Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!decwrl!shelby!helens!news From: news@helens.Stanford.EDU (news) Newsgroups: comp.sys.sgi Subject: Re: Benchmarking the SGI: Floating point faster than integer? Message-ID: Date: 11 Sep 90 20:33:55 GMT References: <1464@ruunsa.fys.ruu.nl> Sender: news@helens.Stanford.EDU Organization: Stanford University Lines: 14 In-reply-to: chooft@ruunsa.fys.ruu.nl's message of 11 Sep 90 14:38:27 GMT The program is a rather extreme benchmark. A more balanced program representative of your application would make more sense as a purchasing criterion. But if you want raw multiplication speeds, each of the FORTRAN multiplies is actually four machine instructions: two loads, a multiply and a store. If you edit the assembly code to discount the loads and stores by repeating the mul instruction N times, the FP multiply is actually 3X faster than the integer!!! Jim Helman Department of Applied Physics Durand 012 Stanford University FAX: (415) 725-3377 (jim@KAOS.stanford.edu) Work: (415) 723-9127