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Subject: Mac Hiarcs v the Big Boys on the Big Iron

Author: George Sobala

Date: 11:56:44 01/20/05


Well, maybe the title is over the top, but here are the results of Hiarcs 9.6
running on a G4 1.25GHz eMac against (a) Gandalf 6 and (b) Shredder 8, both of
which were running on a 1.6GHz Centrino.

The Centrino does 2.4 x as many nodes per second for engines that I can directly
compare on both machines (Ruffian 2, Deep Sjeng, Fruit), so it is a much faster
computer. How much this translates to ELO performance is a matter of debate, if
one assumes that a 2 fold speed increase equates to 40 ELO then 2.4x is about 50
ELO.

64M hash
4 minutes + 2 seconds per move
4 and some 5 piece TBs
Played out on ICC
Hiarcs and Gandalf used their own books and played under X/Winboard
Shredder8 used Deep Sjeng's book under ChessPartner 5.3

Hiarcs9.6

Results against Gandalf6:
  White:  47.72%   +  9  = 23  - 11    21.0 /  44
  Black:  50.00%   + 15  = 16  - 15    23.0 /  46
  Total:  48.88%   + 24  = 39  - 26    44.0 /  90

Results against Shredder8:
  White:  36.00%   +  4  = 10  - 11     9.0 /  25
  Black:  24.00%   +  2  =  8  - 15     6.0 /  25
  Total:  30.00%   +  6  = 18  - 26    15.0 /  50

So after trying to allow for the differences in processor speeds, this is not
quite as good a performance as those I have previously reported for Hiarcs 9.6.
Perhaps equal to what one would have expected from Hiarcs 9.0.




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