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Re: Quickest method for calculation [message #71053 is a reply to message #71052]

Mon, 24 May 2010 12:10

Foldy Lajos
Messages: 268
Registered: October 2001

Senior Member

On Mon, 24 May 2010, Karl wrote:

> If your compiler is really good, you may be able to turn on an option
> that generates SSE code, which may give you another 2x to 3x. The
> above pattern is an easy one for the compiler to recognize as SIMD-
> exploitable. If the compiler doesn't do this for you and you have the
> time, you can write the SSE code yourself.

I think this will have no effect. The bottleneck is memory access, the CPU
is already starving on data.

regards,
lajos

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[Message index]

		Re: Quickest method for calculation By: jaz on Tue, 25 May 2010 15:53
		Re: Quickest method for calculation By: David Fanning on Mon, 24 May 2010 12:37
		Re: Quickest method for calculation By: Karl[1] on Mon, 24 May 2010 12:28
		Re: Quickest method for calculation By: Foldy Lajos on Mon, 24 May 2010 12:10
		Re: Quickest method for calculation By: David Fanning on Mon, 24 May 2010 09:12
		Re: Quickest method for calculation By: Karl[1] on Mon, 24 May 2010 08:58
		Re: Quickest method for calculation By: David Fanning on Mon, 24 May 2010 07:51
		Re: Quickest method for calculation By: Gray on Mon, 24 May 2010 07:39

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