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Subject: Re: The need to unmake move

Author: Sune Fischer

Date: 13:28:31 08/25/03

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On August 25, 2003 at 16:17:34, Dan Andersson wrote:

> I would rather have 2.4 MNps on a single CPU :) And a single agent search will
>be more efficient except special cases. A pardox is that larger cache can be
>counter productive for some parallel applications due to increased memory
>traffic.

Yes, but this memory trafic is a different animal than what the thread was
talking about.

The tread was about making/uncopying, and for that you don't need inter chip
communication, each thread can run independently and can uncopy independently on
its own stack. For this double cache bandwidth is good, two chips can simply
copy double as fast as one chips so Bob's argument that 2.4 Mnps was more than
twice as bad 1 Mnps isn't valid concerning this specific issue.

I realize there are many other factors pointing in the negative direction (e.g.
copying the stack itself between chips would be a killer).

-S.

>MvH Dan Andersson



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