[Scilab-users] Pong contest

[Stéphane Mottelet]

Hi Rafael,

Normally the use of some reliable/multi platform  (sleep is not) synchronisation mechanism allows to have the same user experience regardless the actual hardware. Here we could aim at least 24 refreshs by second. But I am not sure that realtime() would be a better alternative. Maybe using an imported Java method would do it.

S.

> Le 7 juin 2020 à 09:54, Rafael Guerra <jrafaelbguerra at hotmail.com> a écrit :
> 
> 
> Hello Stéphane et al.,
>  
> Would it make sense in this “Pong contest”, in addition to the OS used, to also provide some sort of benchmarking of machine CPU?
>  
> Fyi, find below simple test by Gershenfeld (1999), it computes Pi=4*atan(1) by two methods:
>     Scalar test:  Pi(N)~Sum{i=1:N; 0.5/((i-0.75)*(i-0.25))}
>     Array test:   Pi(N)= Pi(N-1) + 0.5/((N-0.75)*(N-0.25))
>  
> // Based on benchmarking test in Gershenfeld Mathematical modeling book (1999)
> // There are 5 floating point operations per step, total 5 Mflop with N=1e6
> N= 1e6;
> tic();
> ps= 0;
> for i=1:N
>   ps= ps + 0.5/((i-0.75)*(i-0.25));
> end
> dt=toc();
> printf('...SCALAR RESULT:  Mflops= %4.3f ;  Pi ~ %7.6f \n',5.0/dt,ps);
>  
> tic();
> pv(1)= 0.5/((1-0.75)*(1-0.25));
> for i=2:N
>   pv(i)= pv(i-1) + 0.5/((i-0.75)*(i-0.25));
> end
> dt=toc();
> printf('...ARRAY RESULT:  Mflops= %4.3f ;  Pi ~ %7.6f \n',5.0/dt,pv(N));
>  
>  
> PS:
> ...SCALAR RESULT:  Mflops= 3.489
> ...ARRAY RESULT:  Mflops= 1.367
>  
> Regards,
> Rafael
>  
>  
> On 05-06-2020 14:48, Stéphane Mottelet wrote:
> Hello all, 
> 
> As you may have noticed, there is now a little game in the Gaphics/Animation section of the demonstrations. As the speed and responsiveness seems to be similar under all platforms, it would be funny to launch a little contest. In the next Scilab version it would be interesting to implement a high score online record, but until then, you can answer this message with the same kind of screenshot I joined, showing you score and just taken after the game end with and with the last dialog on the figure. 
> 
> Cheers,
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