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Re: optimal DotProduct function

Subject: Re: optimal DotProduct function
From: Steve Peters <email@hidden>
Date: Mon, 7 Nov 2005 08:48:48 -0800
Delivered-to: email@hidden
Delivered-to: email@hidden

On Nov 7, 2005, at 4:03 AM, email@hidden wrote:

Hello all.
I am trying to implement the most optimal dot product function (for
floating point data).

May be someone would point me to a better version of DotProduct
function?

See cblas_sdot() in the Accelerate framework (the algorithm is that of ATLAS — <http://math-atlas.sourceforge.net/>

float cblas_sdot(const int N, const float *X, const int incX,

const float *Y, const int incY);

Please be aware that the Level 1 BLAS (vector vector operations) are generally bound in performance by the rate at which operands can be fetched from memory.

SCP

Steve Peters
email@hidden

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