Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Rebel running (on machines with more than 64MB RAM) slows down by 50%.

Author: Moritz Berger

Date: 13:18:16 11/07/97

Go up one level in this thread


On November 07, 1997 at 13:01:44, Komputer Korner wrote:

>The following was Moritz Berger's response to my complaint about the
>subject of Rebel slowing down on my machine with 144Mb of RAM.
>
>"Tecra 710 and up support 144 MB fully cacheable memory, I have one
>myself (144 MB, successfully used with Linux, NT, 95, Solaris so far).
< snip >
>The following is Andy Duplain's explanation. The QUESTION IS WHO IS
>RIGHT?
>
>"the tag ram used for the caching can only
>> serve the first 64MB; putting more than 64MB in, on a system with such
>> limitations, is detremental to all software and O/S's I would have
>thought.
>Andy Duplain"
< snip >

Just try Fritz 5 with e.g. 100 MB hash tables on your 144 MB machine
(should be no problem under NT 4 SP3). I did this and let it ponder for
a long while. I then compared the times given for the primary variants
with those on my P166 (128 MB RAM, 100 MB hash tables). I noticed that
my P133 Toshiba notebook stayed constantly at about 72% the speed of my
P166 desktop machine (GA 586DX dual Pentium board, 512 KB sync. cache,
512 MB cacheable area). This proves beyond doubt that the Toshiba Tecra
caches >64MB RAM.

Moritz



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.