comparing GPU's

sleigher · 2011-07-02, 16:58

Has there been any research put into time that different CUDA gpu's take for polynomial selection? Like 8800 GT vs 465 GT? Does the number of cores affect the timing significantly?

Is there any place I can read into this topic that you all know of?

Thanks

--

Christenson · 2011-07-02, 17:21

http://mersenneforum.org/forumdisplay.php?f=92
may interest you for general comparisons of GPUs.....

Karl M Johnson · 2011-07-02, 18:37

Basically, the more cores(excluding gpus of sm_21 architecture) at higher clock(s), the faster the polyselection.

jasonp · 2011-07-02, 22:53

Recent work on the poly selection code has reduced the GPU side of things to a curiosity and not a critical advance; the GPU does run faster on smaller problems but smaller problems (< 130-140 digits) don't need that much help selecting polynomials.

2011-07-02, 16:58	#1
sleigher Mar 2010 110011₂ Posts	comparing GPU's Has there been any research put into time that different CUDA gpu's take for polynomial selection? Like 8800 GT vs 465 GT? Does the number of cores affect the timing significantly? Is there any place I can read into this topic that you all know of? Thanks --

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2011-07-02, 17:21	#2
Christenson Dec 2010 Monticello 5×359 Posts	http://mersenneforum.org/forumdisplay.php?f=92 may interest you for general comparisons of GPUs.....

2011-07-02, 18:37	#3
Karl M Johnson Mar 2010 19B₁₆ Posts	Basically, the more cores(excluding gpus of sm_21 architecture) at higher clock(s), the faster the polyselection.

2011-07-02, 22:53	#4
jasonp Tribal Bullet Oct 2004 110111010101₂ Posts	Recent work on the poly selection code has reduced the GPU side of things to a curiosity and not a critical advance; the GPU does run faster on smaller problems but smaller problems (< 130-140 digits) don't need that much help selecting polynomials.