Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: How to handle HUGE hash table?

Author: James Flanagan

Date: 02:38:59 03/30/00

Go up one level in this thread


This is some information that I generated a while back
with Crafty 17.6.  These are the totals for the
Crafty Bench command.  Decreasing from 48M to 48K
only increases execution time modestly. There
was an anomaly when the hash and hashp sizes were badly
mismatched.

Effect of Hash Table Sizes (flags = /Ob1gisy /G6Fr):
Hash     Hashp          Total Nodes*  Time     NPS
96M       8M              66707660    472s   141.3K
48M       8M              66640414    471s   141.5K
24M       8M              68453056    480s   142.6K
12M       8M              70362144    496s   141.9K
 6M       8M              82535653    578s   142.8K
 3M       8M              81501859    574s   142.0K
48K       8M             155261744   1027s   151.8K

48K      16K              81501850    604s   134.9K

48M      16M              66640414    470s   141.8K
48M       8M              66640414    471s   141.5K
48M       4M              66640414    472s   141.2K
48M       1M              66640414    483s   138.0K
48M      16K              66640414    490s   136.0K

*Total nodes were recalculated because
of a MS VC++ bug in this module of Crafty.




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.