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<div class="moz-cite-prefix">Hi Rafael</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">...SCALAR RESULT: Mflops= 2.737 ; Pi
~ 3.141592 <br>
...ARRAY RESULT: Mflops= 1.284 ; Pi ~ 3.141592<br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">The machine is a two-year old Lenovo
T480, Core i7 8th Gen. Built-in Intel Graphics (no external card)<br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">/Claus</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">On 07-06-2020 09:54, Rafael Guerra
wrote:<br>
</div>
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<div class="WordSection1">
<p class="MsoNormal"><span style="color:#002060">Hello </span>Stéphane
et al.,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#002060">Wo</span>uld it
make sense in this “Pong contest”, in addition to the OS used,
to also provide some sort of benchmarking of machine CPU?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Fyi, find below simple test by Gershenfeld
(1999), it computes Pi=4*atan(1) by two methods:
<o:p></o:p></p>
<p class="MsoNormal"> Scalar test: Pi(N)~Sum{i=1:N;
0.5/((i-0.75)*(i-0.25))} <o:p>
</o:p></p>
<p class="MsoNormal"> Array test: Pi(N)= Pi(N-1) +
0.5/((N-0.75)*(N-0.25))<o:p></o:p></p>
<p class="MsoNormal"><span style="color:#002060" lang="PT"><o:p> </o:p></span></p>
<p class="MsoNormal"><i><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#64AE64">//
Based on benchmarking test in Gershenfeld Mathematical
modeling book (1999)</span></i><span
style="font-size:9.0pt;font-family:"Monospaced",serif"><o:p></o:p></span></p>
<p class="MsoNormal"><i><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#64AE64">//
There are 5 floating point operations per step, total 5
Mflop with N=1e6</span></i><span
style="font-size:9.0pt;font-family:"Monospaced",serif"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:black"
lang="PT">N</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#5C5C5C"
lang="PT">=</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif"
lang="PT">
<span style="color:rosybrown">1e6</span><span
style="color:black">;</span><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#32B9B9"
lang="PT">tic</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#4A55DB"
lang="PT">()</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:black"
lang="PT">;</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif"
lang="PT"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:black"
lang="PT">ps</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#5C5C5C"
lang="PT">=</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif"
lang="PT">
<span style="color:rosybrown">0</span><span
style="color:black">;</span><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#A020F0"
lang="PT">for</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif"
lang="PT">
<span style="color:black">i</span><span
style="color:#5C5C5C">=</span><span
style="color:rosybrown">1</span><span
style="color:#FFAA00">:</span><span style="color:black">N</span><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif"
lang="PT">
</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:black">ps</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#5C5C5C">=</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif">
<span style="color:black">ps</span> <span
style="color:#5C5C5C">+</span> <span
style="color:rosybrown">
0.5</span><span style="color:#5C5C5C">/</span><span
style="color:#4A55DB">((</span><span style="color:black">i</span><span
style="color:#5C5C5C">-</span><span
style="color:rosybrown">0.75</span><span
style="color:#4A55DB">)</span><span style="color:#5C5C5C">*</span><span
style="color:#4A55DB">(</span><span style="color:black">i</span><span
style="color:#5C5C5C">-</span><span
style="color:rosybrown">0.25</span><span
style="color:#4A55DB">))</span><span style="color:black">;</span><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#A020F0">end</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:black">dt</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#5C5C5C">=</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#32B9B9">toc</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#4A55DB">()</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:black">;</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#32B9B9">printf</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#4A55DB">(</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:rosybrown">'...SCALAR
RESULT: Mflops= %4.3f ; Pi ~ %7.6f \n'</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:black">,</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:rosybrown">5.0</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#5C5C5C">/</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:black">dt,ps</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#4A55DB">)</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:black">;</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#32B9B9">tic</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#4A55DB">()</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:black">;</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:black">pv</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#4A55DB">(</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:rosybrown">1</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#4A55DB">)</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#5C5C5C">=</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif">
<span style="color:rosybrown">0.5</span><span
style="color:#5C5C5C">/</span><span style="color:#4A55DB">((</span><span
style="color:rosybrown">1</span><span
style="color:#5C5C5C">-</span><span
style="color:rosybrown">0.75</span><span
style="color:#4A55DB">)</span><span style="color:#5C5C5C">*</span><span
style="color:#4A55DB">(</span><span
style="color:rosybrown">1</span><span
style="color:#5C5C5C">-</span><span
style="color:rosybrown">0.25</span><span
style="color:#4A55DB">))</span><span style="color:black">;</span><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#A020F0">for</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif">
<span style="color:black">i</span><span
style="color:#5C5C5C">=</span><span
style="color:rosybrown">2</span><span
style="color:#FFAA00">:</span><span style="color:black">N</span><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif">
<span style="color:black">pv</span><span
style="color:#4A55DB">(</span><span style="color:black">i</span><span
style="color:#4A55DB">)</span><span style="color:#5C5C5C">=</span>
<span style="color:black">pv</span><span
style="color:#4A55DB">(</span><span style="color:black">i</span><span
style="color:#5C5C5C">-</span><span
style="color:rosybrown">1</span><span
style="color:#4A55DB">)</span>
<span style="color:#5C5C5C">+</span> <span
style="color:rosybrown">0.5</span><span
style="color:#5C5C5C">/</span><span style="color:#4A55DB">((</span><span
style="color:black">i</span><span style="color:#5C5C5C">-</span><span
style="color:rosybrown">0.75</span><span
style="color:#4A55DB">)</span><span style="color:#5C5C5C">*</span><span
style="color:#4A55DB">(</span><span style="color:black">i</span><span
style="color:#5C5C5C">-</span><span
style="color:rosybrown">0.25</span><span
style="color:#4A55DB">))</span><span style="color:black">;</span><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#A020F0">end</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:black">dt</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#5C5C5C">=</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#32B9B9">toc</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#4A55DB">()</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:black">;</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#32B9B9">printf</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#4A55DB">(</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:rosybrown">'...ARRAY
RESULT: Mflops= %4.3f ; Pi ~ %7.6f \n'</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:black">,</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:rosybrown">5.0</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#5C5C5C">/</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:black">dt,pv</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#4A55DB">(</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:black">N</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#4A55DB">))</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:black">;</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">PS:<o:p></o:p></p>
<p class="MsoNormal">...SCALAR RESULT: Mflops= 3.489<o:p></o:p></p>
<p class="MsoNormal">...ARRAY RESULT: Mflops= 1.367<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal">Rafael<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">On 05-06-2020 14:48, Stéphane Mottelet
wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"
style="mso-margin-top-alt:5.0pt;margin-right:.5in;margin-bottom:5.0pt;margin-left:.5in">Hello
all, <br>
<br>
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.
<br>
<br>
Cheers, <o:p></o:p></p>
</blockquote>
</div>
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