Author: Bernhard Bauer
Date: 23:32:01 01/24/01
Go up one level in this thread
On January 24, 2001 at 12:06:40, Robert Hyatt wrote: >On January 24, 2001 at 10:22:28, Bernhard Bauer wrote: > >>On January 24, 2001 at 06:51:30, David Rasmussen wrote: >> >>>I have a problem with Crafty. >>> >>>I'm trying to run it on a solaris system with 24 CPUs (I've tried it as well on >>>a 12 CPU machine of the same kind). >>> >>>I sometimes get the message "ERROR. no SMP block can be allocated". >>>What does this mean? What is the problem >> >>In chess.h is a line >>#define MAX_BLOCKS 16*CPUS >> >>You may change this line to a greater value. >>For CPUS=2 this did noz work for me, so I use >>#define MAX_BLOCKS 128 >>and that works. >> >>Kind regards >>Bernhard > > >When you say "did not work for me" do you mean you got the out of blocks >error? 2*16 should work for a dual. 4*16 works for my quad and never >produces an error. If you watch the SMP part of the statistics output, it >shows the max number of blocks used during a search: > > SMP-> split=507 stop=83 data=17/64 cpu=22.77 elap=6.18 > >in my case, 17 blocks was the peak usage, with a total of 64 (4*16). I would >definitely be interested to know your peak number for a dual system. I would >expect something in the 8-10 range typically. On my quad it averages about 12 >over the course of a game. Dear Mr. Hyatt, when I compiled Crafty 18.1 with makefile.nt under WIN2000 with the MS compiler C/C++-Compiler, Version 12.00.8804 Crafty compiled fine, no errors, but when I started the exe file I got an error immediatly. So if you ask "did you got the out of blocks error?" I will say yes or no, it simply didn't run. A window poped up which said I had a memory error. So I had no idea what the error coud be. First when I noticed the change from 17.14 to 18.1 in chess.h I was able to compile Crafty for SMP. When I ran the LCT2 test for 30 min/pos I got a peak number of 10/128. Kind regards Bernhard
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.