Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!elroy.jpl.nasa.gov!sdd.hp.com!uakari.primate.wisc.edu!aplcen!boingo.med.jhu.edu!haven.umd.edu!udel!nigel.ee.udel.edu!mccalpin From: mccalpin@perelandra.cms.udel.edu (John D. McCalpin) Newsgroups: comp.unix.aix Subject: Re: IBM 6000 vs HP 9000 series 700 Message-ID: Date: 27 Jun 91 21:43:21 GMT References: <1991Jun25.160925.53455@eagle.wesleyan.edu> <1991Jun25.214124.29573@aplcen.apl.jhu.edu> <1991Jun26.191020.26093@cs.utk.edu> <1145@hrshcx.csd.harris.com> <1991Jun27.194224.29879@leland.Stanford.EDU> Sender: usenet@ee.udel.edu Organization: College of Marine Studies, U. Del. Lines: 27 Nntp-Posting-Host: perelandra.cms.udel.edu In-reply-to: fangchin@leland.Stanford.EDU's message of 27 Jun 91 19:42:24 GMT >>>>> On 27 Jun 91 19:42:24 GMT, fangchin@leland.Stanford.EDU (Chin Fang) said: Chin> This leads me to... a 40Mhz i860 offers 80 MFLOPs. Can IBM Chin> Austin people design a addon board to utilize i860 for us? Chin> After all, IBM owns part of Intel and if RISC 6000 lines are Chin> designed for technical users, I would say the more MFLOPS the Chin> bigger your market share will be :-) Now this is THE MOTIVATION Chin> for IBM :-) A 40 MHz RISC-System/6000 can also do 80 MFLOPS, and IBM seems to have done a much better job at writing good compilers for their CPU than Intel has. I have important pieces of my fluid dynamics codes that run at over 25 MFLOPS on the Model 320 and over 60 MFLOPS on a Model 550. Unfortunately not all of the code runs that fast yet --- there are still memory bandwidth bottlenecks to deal with.... If someone wants to build a "Real (tm)" number-crunching machine, then it is going to have to support 2 64-bit loads, 1 64-bit store, 1 64-bit FP add, 1 64-bit FP multiply, and 1 logical operation/branch per cycle. Right now if you want one of those, you will have to call Cray Research.... -- John D. McCalpin mccalpin@perelandra.cms.udel.edu Assistant Professor mccalpin@brahms.udel.edu College of Marine Studies, U. Del. J.MCCALPIN/OMNET