Author: Robert Hyatt
Date: 07:11:06 08/24/99
Go up one level in this thread
On August 24, 1999 at 06:27:34, Rémi Coulom wrote: >On August 21, 1999 at 14:04:45, Dave Gomboc wrote: > >>On August 21, 1999 at 06:13:53, Rémi Coulom wrote: >> >>>Hi, >>> >>>I plan to buy new hardware soon, and I hesitate about buying a multiprocessor >>>motherboard. I would like to try parallel search algorithms for The Crazy Bishop >>>and I wonder if it possible to experiment them with multiple threads on a single >>>processor. From the little experience of parallel programming I have, I guess >>>that there are some problems that could arise when two threads are running on >>>two processors simultaneously that would not arise when they run in different >>>time slices on the same processor. I would like to know what more experienced >>>parallel searchers think. >>> >>>Thanks, >>> >>>Remi >> >>I'm wondering if you're hesitating about buying a multiprocessor mainboard >>because of the price! :-) or because you're unsure of how stable/safe they are. >>I've used an ASUS P2B-D for a year, and it's been great. If you wanted 4 >>processors instead of 2, maybe ask Bob and Bruce what they are using. >> >>Dave > >I simply thought that a single faster processor could be of more interest than >two slower ones for the same price. But parallel programming looks really fun >and I will probably choose a bi-processor. I am now looking forward to my first >nasty multithread bug :-). > >Remi Dual 350's will be slower than a single 600 by a significant margin. But if you get the dual 350, you can debug a parallel search, and a quad 600 will be _far_ faster than a single 600... roughly 3x faster or a bit more, depending on how good you are at parallel search issues... It is unlikely that you will find most bugs using two threads on a single processor... the timing just isn't the same. You will find a lot, of course, but every time you port to a new platform you will find more. I ran for a good while on a dual 300, and had good results. Moving to my quad P6/200 (when it arrived) immediately highlighted many more bugs...
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.