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Re: Intel iMac IDL performance [message #48087 is a reply to message #47930]

Mon, 20 March 2006 08:19

JD Smith
Messages: 850
Registered: December 1999

Senior Member

On Mon, 13 Mar 2006 18:59:00 +0100, Wolf Schweitzer wrote:

> JD Smith wrote:
>> This assumes TPOOL_MIN_ELTS=100000. Setting tpool_min_elts with CPU will
>> reset this, which will make the size of the vector much smaller, and make
>> this somewhat artificial (though I don't doubt a factor of 10, really). I
>> guess I should have put a:
>>
>> cpu,tpool_min_elts=100000
>>
>> first, to even the playing field.
>>
>> JD
>
> I did set the vector to 100000 (which rids me of depending on that
> assumption with the threadpool minimal elements - setting being constant).
>
> Then I vary TPOOL_MIN_ELTS until I find the fastest speed. I personally
> would see no point in recording an artificially slow speed just because
> for a given machine / task, the TPOOL_MIN_ELTS is suboptimal. So you'd
> first seek the best speed, and record that.

Because that's somewhat unrealistic, given how the optimum variable will
change depending on the code executing. I think 100000 is a good
conservative choice, though it might be worth trying half that and double
that.

JD

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[Message index]

		Intel iMac IDL performance By: K. Bowman on Mon, 27 February 2006 13:09
		Re: Intel iMac IDL performance By: K. Bowman on Wed, 01 March 2006 06:44
		Re: Intel iMac IDL performance By: Richard French on Tue, 28 February 2006 14:53
		Re: Intel iMac IDL performance By: K. Bowman on Tue, 28 February 2006 13:25
		Re: Intel iMac IDL performance By: JD Smith on Tue, 28 February 2006 12:55
		Re: Intel iMac IDL performance By: JD Smith on Tue, 28 February 2006 09:07
		Re: Intel iMac IDL performance By: Wolf Schweitzer on Mon, 13 March 2006 09:59
		Re: Intel iMac IDL performance By: JD Smith on Mon, 20 March 2006 08:19

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