Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!decwrl!shelby!portia.stanford.edu!baroque!jim From: jim@baroque.Stanford.EDU (James Helman) Newsgroups: comp.sys.sgi Subject: Re: Benchmarking the SGI: Floating point faster than integer? Message-ID: Date: 11 Sep 90 20:51:29 GMT References: <1464@ruunsa.fys.ruu.nl> Sender: news@portia.Stanford.EDU (USENET News System) Organization: Stanford University Lines: 16 In-Reply-To: chooft@ruunsa.fys.ruu.nl's message of 11 Sep 90 14:38:27 GMT [repost, original apparently lost in NNTP land] The program is a rather extreme benchmark. A more balanced program representative of your application would make more sense as a purchasing critereon. But if you want raw multiplication speeds, each of the FORTRAN multiplies is actually 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