giga rays on intel phi

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Zelcious
Posts: 42
Joined: Mon Jul 23, 2012 11:05 am

Re: giga rays on intel phi

Postby Zelcious » Sat Sep 14, 2013 5:39 pm

What percentage of the inner loops use double precision? Can you give a rough estimate?

mpeterson
Posts: 50
Joined: Fri Jan 06, 2012 3:09 pm

Re: giga rays on intel phi

Postby mpeterson » Sat Sep 14, 2013 5:41 pm

keep in mind that the titan has 2x the horsepower of phi. so phi
is not a bad platform for rt/pt.

graphicsMan
Posts: 154
Joined: Mon Nov 28, 2011 7:28 pm

Re: giga rays on intel phi

Postby graphicsMan » Mon Sep 16, 2013 1:40 am

Yeah, raw FLOPS definitely has little to do with how well a processor will compute specific tasks. I'll be interested to see how these two processors compete as you develop similar specialized kernels for the Titan platform. I think a key thing about Phi is that it has more memory than GPUs have, and going forward memory will likely be a main factor for which platform to choose.

Dade
Posts: 206
Joined: Fri Dec 02, 2011 8:00 am

Re: giga rays on intel phi

Postby Dade » Mon Sep 16, 2013 6:22 am

graphicsMan wrote:I think a key thing about Phi is that it has more memory than GPUs have, and going forward memory will likely be a main factor for which platform to choose.


There is a Quadro card with 12GB of ram, what is the larger memory configuration available for Xeon Phi ?

voxelium
Posts: 15
Joined: Fri Apr 27, 2012 11:10 am
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Re: giga rays on intel phi

Postby voxelium » Mon Sep 16, 2013 10:06 am

Dade wrote:There is a Quadro card with 12GB of ram, what is the larger memory configuration available for Xeon Phi ?

16 GB: http://ark.intel.com/products/75799/Int ... Hz-61-core


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