Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!emory!hubcap!ddyer From: ddyer@hubcap.clemson.edu (Doug) Newsgroups: comp.sys.amiga.advocacy Subject: Re: MIPS (was Re: NeXT Press Release) Message-ID: <1991Apr23.042113.23494@hubcap.clemson.edu> Date: 23 Apr 91 04:21:13 GMT References: <4c9Go-jt1@cs.psu.edu> <47555@ut-emx.uucp> <8107@jhunix.HCF.JHU.EDU> <&ubG#27w1@cs.psu.edu> Distribution: comp Organization: Clemson University Lines: 60 melling@cs.psu.edu (Michael D Mellinger) writes: >In article <8107@jhunix.HCF.JHU.EDU> barrett@jhunix.HCF.JHU.EDU (Dan Barrett) writes: > In article melling@cs.psu.edu (Michael D Mellinger) writes: > >>The 1+ has a few MIPS on the 040. > >WRONG. The Sparc 1+ is rated 15mips and so is the 68040. > I was under the impression that RISC MIPS and CISC MIPS are not > directly comparable like this. >Actually, the best way to compare performance is with SPECmarks. CISCS Just for everyones record: (off comp.arch) no cache 68040 486 SPARC330 68040 Integer gcc 13.8 13.8 13.8 12.4 espresso 13.4 12.2 11.6 12.8 li 15.5 16.8 11.2 14.9 eqntott 9.8 11.0 12.6 9.7 FP spice2g6 13.1 8.8 11.4 11.8 doduc 8.1 5.8 9.5 7.7 nasa7 12.1 5.8 14.0 11.5 matrix3000 11.5 9.5 14.7 10.8 fpppp 13.4 7.0 13.1 12.1 tomcatv 9.1 4.3 8.2 8.4 Means SPECmark 11.8 8.8 11.8 11.0 Integer 12.9 13.3 12.3 12.3 FP 11.0 6.6 11.6 10.2 All three are at 25mhz with 128k cache Note that SUN SS1+ is only 10.0 specmark (25mhz, 64kb cache) True, RISC has a MUCH higher instruction bandwidth than CISC. Still, in the experimental end, CISC (in the literal sense) is comming back in machines such as RS/6000, and HP cobras. They have a lengthy instruction set where complicated instructions (such as fused multiply-add) are shown to improve performance. I feel that the big loss in traditional CISC is in sticking architectural baggage on every new generation. Nick Trennedick (sp) mentioned that its highly intimidating to chase obscure quirks in the previous generation and have to implement them. Spare the flames against SPECmark and benchmarks. On the other hand, Im no architect expert (FAR cry from architect mongo level), so flame away! Mongo just pawn in chess game of life. Bye, Doug -- Doug Dyer ddyer@hubcap.clemson.edu