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Re: vector of bin indices using histogram? [message #50754 is a reply to message #50748]

Wed, 18 October 2006 11:12

Foldy Lajos
Messages: 268
Registered: October 2001

Senior Member

On Wed, 18 Oct 2006, Paolo Grigis wrote:

> Yes, you're right, we should use smaller arrays such
> that everything fits into the cache.
>
> Using your md.pro, the ratio DIV/MUL in my systems
> are about:
>
> pentium 4 : 6.6
> xeon dual : 5.0
> sparc : 2.9
>
> Anybody with an AMD processor around?
>
> Ciao,
> Paolo
>

Opteron 142, linux, IDL 6.2:

IDL> .ru md
% Compiled module: $MAIN$.
DIV: 5.9537580
MUL: 3.1484690

FL 0.60j without SSE:

FL> .ru md
% Compiled routine: $MAIN$
DIV: 2.1138449
MUL: 2.1111529

FL 0.60j with SSE (default):

FL> .ru md
% Compiled routine: $MAIN$
DIV: 1.2792230
MUL: 1.2820880

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[Message index]

		Re: vector of bin indices using histogram? By: Paolo Grigis on Thu, 19 October 2006 00:45
		Re: vector of bin indices using histogram? By: greg michael on Wed, 18 October 2006 14:42
		Re: vector of bin indices using histogram? By: greg michael on Wed, 18 October 2006 14:07
		Re: vector of bin indices using histogram? By: Foldy Lajos on Wed, 18 October 2006 11:12
		Re: vector of bin indices using histogram? By: C. E. Ordonez on Wed, 18 October 2006 10:57
		Re: vector of bin indices using histogram? By: Jean H. on Wed, 18 October 2006 10:09
		Re: vector of bin indices using histogram? By: Paolo Grigis on Wed, 18 October 2006 09:56
		Re: vector of bin indices using histogram? By: Paolo Grigis on Wed, 18 October 2006 09:27
		Re: vector of bin indices using histogram? By: Foldy Lajos on Wed, 18 October 2006 09:25
		Re: vector of bin indices using histogram? By: David Fanning on Wed, 18 October 2006 09:06
		Re: vector of bin indices using histogram? By: Foldy Lajos on Wed, 18 October 2006 08:53
		Re: vector of bin indices using histogram? By: greg michael on Wed, 18 October 2006 08:38
		Re: vector of bin indices using histogram? By: Foldy Lajos on Wed, 18 October 2006 08:33
		Re: vector of bin indices using histogram? By: David Fanning on Wed, 18 October 2006 08:08
		Re: vector of bin indices using histogram? By: Paolo Grigis on Wed, 18 October 2006 07:47
		Re: vector of bin indices using histogram? By: greg michael on Wed, 18 October 2006 07:00
		Re: vector of bin indices using histogram? By: btt on Wed, 18 October 2006 06:19

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