Author: Kai Lübke
Date: 02:15:10 01/21/99
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On January 21, 1999 at 01:41:18, Steven Juchnowski wrote: >For what ever reason, Junior5 can lose up to 70% of it's speed >when used against other software on the same hardware. > >Most other programs can lose 5-50% under the same conditions. Since I used to play single-machine games myself in the past, I still test programs as to how they work under these conditions. My observations are as follows (all considerations for "permanent brain off", of course): DOS programs: don't slow down others noticably, get slowed down to 70% (not *by* 70%) by Windows programs such as Chessmaster or Nimzo 98. Windows programs: Chessmaster 5500/6000: slows opponent down to 75-80% Nimzo 98: slows opponent down to 45-55% Virtual Chess II: slows opponent down to 65-75% Fritz 5 (16 bit): slows opponent down to 95-98% These slowdowns are mutual, i.e. in a Nimzo vs. CM game, CM would play at about 50% and Nimzo at about 75% of its usual speed. Now for the 32 bit Chessbase programs (Fritz 5.32, Junior 5, very likely also Nimzo 99), it is a different story. They don't cause much slowdown themselves, but they are _extremely_ sensitive towards other programs running. I have seen Junior 5 slow down to some 3-5 Knps (!!!) when for example Chessmaster is running at the same time (even if CM just sits there doing nothing), the same against Nimzo 98 and Genius 5 Windows. The general rule is: single-machine testing with any 32 bit Chessbase program is strongly discouraged, at least against other Windows programs (except Fritz 5 and WinBoard which are "friendly"). --- Shep
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