Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!samsung!zaphod.mps.ohio-state.edu!mips!apple!netcom!hue From: hue@netcom.UUCP (Jonathan Hue) Newsgroups: comp.sys.amiga.hardware Subject: Re: URGENT How fast is 2630 Message-ID: <8249@netcom.UUCP> Date: 3 Mar 90 08:16:53 GMT References: <4ZvUba200XNI88ZUU8@cs.cmu.edu> Organization: NetCom- The Bay Area's Public Access Unix System {408 249-0290 guest} Lines: 25 In article portuesi@sgi.com (Michael Portuesi) writes: > >Does the new IBM machine really do 25 MFlops, or is it just 25 MIPS? They claim 27 to 41 MIPS based upon Dhrystone 1.1, a fairly useless benchmark. They also say 22.3 to 34.7 Specmarks, which I think is a useful number. As far as FP goes, they say 7.5 MFLOPs for the slowest boxes, 13 for the fastest. There's an RISC System/6000 in the corner where I work, I think it's a 520 (the cheapest, slowest deskside model) but there aren't any labels on it. I've been running rayshade (ray tracer posted to comp.sources.unix) on it and the NeXT on my desk. The NeXT is probably comparable to a 2630 (25MHz '882) and took 13 hours to render a scene. The IBM box took 2hours and 39 minutes for the same picture. I'm sure the OS and compiler we have is much older than what was used to run the benchmarks, and will be much improved when the OS finally ships, so these numbers will probably go up (who knows how much). Anyone porting rayshade to the Amiga? It should be pretty easy. I bet the same image takes about a week to render on a Amiga 500 with s/w floating point. I've already got some of the images converted to HAM for the Amiga, they are really very nice. -Jonathan