Thread Subject: Why is Matlab2007a Slow Compared to v6.5.1

I've been performing image analysis on a series of images with MATLAB
6.5.1. The program I've written performs many iterations and has an
operating speed of 30-40 seconds. I needed to compile the program and
thus used MATLAB 2007A with Compiler 4.6; however, the operating
speed of both the 2007a m-file and stand-alone executalbe is 4
minutes.

Why is 2007a so much slower than v6.5.1? I can't find a compiler for
6.5.1: is there another solution?

Jason Heinrich wrote:
>
>
> I've been performing image analysis on a series of images with
> MATLAB
> 6.5.1. The program I've written performs many iterations and has an
> operating speed of 30-40 seconds. I needed to compile the program
> and
> thus used MATLAB 2007A with Compiler 4.6; however, the operating
> speed of both the 2007a m-file and stand-alone executalbe is 4
> minutes.
>
> Why is 2007a so much slower than v6.5.1? I can't find a compiler
> for
> 6.5.1: is there another solution?
  
Try PROFILE to find out why your code is slower with R2007a.

Matlab Compiler now and a few releases back doesn't improve speed.

Did you ask The Mathworks about the compiler for Matlab v6.5.1. There
certainly was one.

/ per