Re: Loops resource usage.

[Muthiah Annamalai]

On 6/22/07, John W. Eaton <address@hidden> wrote:
> On 21-Jun-2007, Muthiah Annamalai wrote:
>
> | Hello there,
> |
> | I wanted to ask if there is a difference between writing a program like
> |
> | for x=linspace(-pi:+pi,Npts)
> |    [X,Y,Z,L,M,N]=init_variables();
> |    do_a_time_consuming_long_computation();
> |
> |   %clear the memory used
> |
> |    clear all
> | end
> |
> | % and this function?
> |
> | for x=linspace(-pi:+pi,Npts)
> |    [X,Y,Z,L,M,N]=init_variables();
> |    do_a_time_consuming_long_computation();
> | end
> |
> |
> | My advisor told me, it saves something and does better in long programs.
> | Thanks in advance.
>
> Doing "clear all" also clears all function definitions, so they will
> have to be reloaded the next time through the loop (which will also
> cause any persistent variables to be reinitialized).  In Matlab, "clear
> all" also deletes debugging breakpoints.  Is that the effect you
> really want?
>
> jwe

First, thanks for answering this question (David Grohman, JWE).

I dont want things to be reloaded or lose context by clear all. I was
curious to know if doing something within loops will boost up memory
usage to brink of slowing down Octave itself.

> From what I hear it doesnt seem to be the case.

Thanks,
-Muthu