speed of Scilab 5.3.2 vs Scilab 5.3.1

[Ginters Bušs]

And about 1.65sec. on Scilab 4.1.2.

So, still Scilab 4 is faster, but only marginally.


On Wed, Jul 20, 2011 at 11:23 AM, Ginters Bušs <ginters.buss at gmail.com>wrote:

> Hi,
>
> Just to let you know:
> I just found out that version 5.3.2. runs faster than 5.3.1.
>
> Say, this code:
>
> tic()
> sigeta=2; sigeps=1;
> mi=[]; c=[]; y=[]; skait=[]; sauc2=[]; rho=[];
> f1=1.2; f2=-0.5;
> n=102000; k=2000;
> c=grand(n,1,'nor',0,sigeta);
> c(2)=f1*c(1)+c(2);
> mi=grand(n,1,'nor',0,sigeps);
> for i=3:n;
>     c(i)=c(i)+f1*c(i-1)+f2*c(i-2);
> end
> for i=2:n;
>     mi(i)=mi(i)+mi(i-1);
> end
> y=c+mi;
> y(1:k)=[];
> c(1:k)=[];
> i=1:length(y);
> skait=sum((y(i)-mean(y)).*(c(i)-mean(c)));
> sauc2=sum((y(i)-mean(y))^2)*sum((c(i)-mean(c))^2);
> rho=skait/sqrt(sauc2)
> toc()
>
> takes approx. 1.75sec. (on my PC) on Scilab 5.3.2, while approx. 6 sec. on
> Scilab 5.3.1.
>
> Gin.
>
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