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Subject: Re: Crafty and NUMA

Author: Gian-Carlo Pascutto

Date: 23:24:00 09/02/03

Go up one level in this thread

On September 02, 2003 at 22:34:49, Robert Hyatt wrote:

>>Been working a year fulltime now :)
>>
>
>So?  It took you over a year to get your parallel search working.  It took
>me weeks.
>
>:)

In all fairness, he did a full DTS implementation, including rewriting the
program to a nonrecursive search, while you took an easy way out.

Diep's parallel performance does seem to be better than what you and I are
getting.

I wouldn't make that design decision for the common 2 or 4 way machines
you are most likely to end up working with, but given that he's now
working with 512, I'm sure it has payed off handsomely in the meantime.

Likewise, optimizing a program for Opteron NUMA is a whole different animal
than optimizing it for a 512 CPU NUMA Sun Altix.

I agree optimizing Crafty for the Opteron won't take an entire rewrite,
but please don't go claiming that 'NUMA-Crafty' will run well on any NUMA
machine.

--
GCP

• Re: Crafty and NUMA Robert Hyatt 08:52:01 09/03/03
  • Re: Crafty and NUMA Vincent Diepeveen 10:10:23 09/03/03
    • Re: Crafty and NUMA Robert Hyatt 10:45:51 09/03/03
      • compiling crafty at a cc-NUMA machine Vincent Diepeveen 11:22:24 09/03/03
        • Re: compiling crafty at a cc-NUMA machine Robert Hyatt 11:56:41 09/03/03
          • Re: compiling crafty at a cc-NUMA machine Vincent Diepeveen 12:20:44 09/03/03
            • Re: compiling crafty at a cc-NUMA machine Robert Hyatt 13:22:39 09/03/03
• Re: Crafty and NUMA Uri Blass 05:12:55 09/03/03
  • Re: Crafty and NUMA Robert Hyatt 08:53:58 09/03/03
    • Re: Crafty and NUMA Anthony Cozzie 16:23:46 09/03/03
      • Re: Crafty and NUMA Robert Hyatt 16:55:08 09/03/03
        • Re: Crafty and NUMA Anthony Cozzie 06:53:06 09/04/03
          • Re: Crafty and NUMA Robert Hyatt 07:41:16 09/04/03
        • Re: Crafty and NUMA Tony Werten 04:11:51 09/04/03
  • Re: Crafty and NUMA Vincent Diepeveen 06:08:46 09/03/03
    • Re: Crafty and NUMA Johan de Koning 00:44:22 09/04/03
      • Re: Crafty and NUMA Uri Blass 00:56:07 09/04/03
        • Re: Crafty and NUMA Robert Hyatt 07:44:37 09/04/03
    • Re: Crafty and NUMA Uri Blass 08:38:00 09/03/03
      • Re: Crafty and NUMA José de Jesús García Ruvalcaba 08:27:30 09/04/03
  • Re: Crafty and NUMA Gian-Carlo Pascutto 05:24:09 09/03/03
    • Re: Crafty and NUMA Uri Blass 05:59:24 09/03/03

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