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Subject: Re: OT -> if you had the choice...

Author: Eugene Nalimov

Date: 15:57:08 11/05/03

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On November 05, 2003 at 18:17:03, Robert Hyatt wrote:

>On November 05, 2003 at 16:41:51, Eugene Nalimov wrote:
>
>>On November 05, 2003 at 09:54:13, Robert Hyatt wrote:
>>
>>>On November 05, 2003 at 05:22:16, Ed Schröder wrote:
>>>
>>>>If you the choice between:
>>>>
>>>>1) AMD Opteron 244, 1.8 Ghz, S-940 Box
>>>>
>>>>and:
>>>>
>>>>2) AMD MP 2600+, 266Mhz
>>>>
>>>>then what would be the best choice regarding speed.
>>>>
>>>>I wonder...
>>>>
>>>>Ed
>>>
>>>for me, I'd take the opteron.
>>>
>>>Crafty gets about 2M nps on a 1.8ghz opteron...  single processor.
>>
>>Not exactly. Following are 2 log files from (new version of) Crafty running on
>>1.8GHz quad Opteron system. Run time vary from run to run, but those are typical
>>ones
>>
>>1 CPU:  1,762knps
>>4 CPUs: 6,856knps
>
>OK... I had done the calculation wrong.  I thought that 6.8M for 4 was
>basically 3.2X faster than 1, due to the NUMA scaling issues.  It looks
>from the above that it is now scaling almost 4:1 which is great.  :)
>
>Now if my dual xeon would just scale 2.0  :)

What is current number? I believe we improved it when you made some global
per-thread one, no?

Thanks,
Eugene



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