Author: Dann Corbit
Date: 10:44:23 06/20/01
Go up one level in this thread
On June 20, 2001 at 13:14:37, Carlos del Cacho wrote: >On June 20, 2001 at 07:35:24, Uri Blass wrote: > >>Crafty needs only 2.2 seconds to calculate perft 5(the number of legal games >>with 5 moves) and only 54.76 seconds to calculate perft 6(119,060,324 nodes) >> >>It is clear that Crafty does not use hash tables to calculate perft faster. >> >>Is there another program (with free or without free source code) that can >>calculate perft (without hash) faster than Crafty? >> >>Uri > > >It is a well known fact that bitboards are slow at move generation using 32 bit >architecture hardware. Some results on my K6 400 MHz > >Crafty 17.14 | Pepito | A 0x88 thing I'm messing with (ANSI C) > | | >ply 5: 8.02 | ply 5: 6.91 | ply 5: 4.17 >ply 6: 196.96 | ply 6: 161.00 | ply 6: 90.50 Depends on the chip used. Here's an AMD 950 MHz: --------------------------------- Crafty v18.10 White(1): perft 5 total moves=4865609 time=1.97 White(1): --------------------------------- Pepito> perft 5 Time spent: 2.07 Paths searched: 4865609 ---------------------------------
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