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Confusion about nthread and ncore [message #89726]

Thu, 20 November 2014 10:04

chuxiangning
Messages: 17
Registered: September 2012

Junior Member

Hi All
It has always been confusing to me how IDL handles nthread and ncores.
I have an i7 which has 4 physical cores and 8 threads.
Matlab recognizes i7 as 4 cores and uses 4 threads. IDL recognizes i7 as 8 threads.
In my opinion, in a computation-heavy program, 4 threads should be used instead of 8, because using 8 threads actually slows down the program.
Is this correct?

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[Message index]

		Confusion about nthread and ncore By: chuxiangning on Thu, 20 November 2014 10:04
		Re: Confusion about nthread and ncore By: Sergey Anfinogentov on Fri, 21 November 2014 03:59
		Re: Confusion about nthread and ncore By: chuxiangning on Tue, 25 November 2014 09:38
		Re: Confusion about nthread and ncore By: victor.cazcarra on Thu, 27 November 2014 01:05
		Re: Confusion about nthread and ncore By: chuxiangning on Sat, 29 November 2014 16:40

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