Author: Richard A. Fowell (fowell@netcom.com)
Date: 00:21:26 06/01/98
Go up one level in this thread
On May 30, 1998 at 21:00:37, Oliver Y. wrote: >Just read the latest Byte magazine which mentioned ByteInteger scores >for the G3 chip as 9.8/292MHz v.s. about 5.4? for the PII-400, approx... > The light dawns ... that's why the company that bought Byte shut Byte down! ( Mac-owner paranoia? Or the solution to a mystery? ) >Questions: >1. Why is the difference in scores not reflected in the SpecInteger >measurement (12.? v.s. 11.?); and which is more relevant to the strength >of Hiarcs6? Actually, the HIARCS 6.0 benchmarks I have (details at http://www.gambitsoft.com/chess/games/hiar6me.htm) give "only" a 1.56 factor speedup from PII to G3 at the same MHz) ------------------------------------------------------------------- Mac G3 /266 266MHz 750 39,934 nps 150 nps/MHz Sys 8, no extensions Pent II /266 266MHz PII 25,604 nps 96 nps/MHz > >2. How did the developers port Hiarcs to the Mac? Did they do a >thorough job, with the foresight to consider the issue in the following >question? Hmmm ... the fellow that did the port used to watch this group occasionally, but since he parted ways with the HIARCS team, I don't know if you'll get a solid answer on this. > >3. How much is the performance of Hiarcs affected by the size of the >backside cache? as well as the speed? Well, I have a good benchmark if some HIARCS Mac owner has the hardware and the inclination. > >4. I understand that the harddrive is not accessed much, but how >important is the system bus speed? > >5. Any other considerations re whether the G3 Desktop system's design >makes it a reasonable choice for those who just want to surf and >analyse? > >I already know that FP doesn't matter for chess analysis... >I don't know much about computers. >Why does the SSDF not rate the H6 on a Mac? At last - an easy question! The SSDF members mainly have PCs, and use Auto232. No-one has made a Mac clone of Auto232 that I know of. Even did they, the hardware issue means the SSDF, with their limited resources, would likely be reluctant to rate it. It's really not necessary, anyway - absent the fact that the Mac version has a fixed hash table size of 256K, the engines are identical, and my ca. 30-problem benchmark shows that the chess speed differential between two hardware platforms doesn't vary much for HIARCS. > >6. Any guess as to what Hiarcs 6 could be rated at if the Byte score is >correctly construed to effectively be analogous to a "1050MHz PentiumII? >Approx... Well, this would take a recompile of HIARCS, alas. *IF* the smaller HIARCS Mac hash size is not an issue, my benchmark indicates the 300MHz G3 is "only" a "467MHz Pentium II". > >Any comment would be helpful. The iMac debuts in August, and though it >has some limitations, it could possibly be a nice unit to analyse with >Hiarcs, or any other Mac software... If reminded, I could probably stop by the local Mac sales office and add it to my HIARCS 6.0 Mac benchmark stats.
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