Hi Rafael
...SCALAR RESULT: Mflops= 2.737 ; Pi ~ 3.141592
...ARRAY RESULT: Mflops= 1.284 ; Pi ~ 3.141592
The machine is a two-year old Lenovo T480, Core i7 8th Gen. Built-in
Intel Graphics (no external card)
/Claus
On 07-06-2020 09:54, Rafael Guerra wrote:
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;
fori=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));
fori=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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