Author: Peter Kasinski
Date: 09:54:21 03/05/99
Go up one level in this thread
On March 05, 1999 at 12:23:35, Jon Dart wrote: >One thing to watch out for is that Win 98 and NT both normally give >a priority boost to the window that has the focus. You can adjust the >degree of boost (and if you do a lot of benchmarking you might want >to set it to zero). If you don't change it, you want to be sure that >your program has the focus or runs in the windows that has it. > >--Jon > Thanks Jon, All this is quite intriguing by now. I compiled Crafty and I am not getting this difference at all! Maybe 15%. I am beginning to think that I'm using some data types/structures which are handled much better by NT. Just to recap: a) machine has 192 Mb of RAM and I use 16Mb for this test b) there are no other processes running (CPU idle = 100%) c) I tried both Workstation and Network Server settings (this affects some applications) d) My program is in focus PK. >On March 04, 1999 at 17:12:46, Peter Kasinski wrote: > >>I tried runnig Pedestrian under Win98 and was shocked by how much slower it was >>than under NT. Details: >> >>a) same C++ compiler from Visual Studio 6 >>b) same hardware (PII 450) >>c) identical node counts and depths >>d) typical timing from one of the positions: >> >>Win 98 163.0 sec >>Win NT 4.01 73.9 sec >> >>Any idea why such a huge difference? >>I tried tweaking some optimization options but it didn't help. >> >>(win386.swp is not the answer, by the way) >> >>thanks, >>PK.
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.