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Subject: PVS and aspiration windows

Author: Tord Romstad

Date: 05:44:32 08/06/04

A basic question from a PVS newbie:

How much of an improvement should I expect to see when I introduce aspiration
windows in a PVS search?  When using an aspiration window of +- 0.5 pawns,
I don't see any improvement at all compared to a window of +- INFINITY.  In
most positions, the node counts differ by just a couple of % (and the version
with aspiration is not always the fastest).

Is this what I should expect, or should I start looking for a bug?

Tord

• Re: PVS and aspiration windows Gerd Isenberg 01:25:29 08/07/04
• Re: PVS and aspiration windows Chris Welty 23:30:42 08/06/04
• Re: PVS and aspiration windows José Carlos 16:32:02 08/06/04
• Re: PVS and aspiration windows Robert Hyatt 15:25:31 08/06/04
  • Re: PVS and aspiration windows (more) Robert Hyatt 19:26:41 08/06/04
    • Re: PVS and aspiration windows (more) Tord Romstad 01:26:16 08/08/04
• Re: PVS and aspiration windows Peter Fendrich 14:04:51 08/06/04
• Re: PVS and aspiration windows Bas Hamstra 11:32:29 08/06/04
• Re: PVS and aspiration windows James Swafford 08:08:38 08/06/04
• Re: PVS and aspiration windows Jan K. 07:55:27 08/06/04
• Re: PVS and aspiration windows Will Singleton 07:02:00 08/06/04
• Re: PVS and aspiration windows David Weller 06:55:22 08/06/04
  • Re: PVS and aspiration windows David Weller 07:42:55 08/06/04

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