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<div>What OS are you running? parallel_run does not work on macOS. It does work on Linux though.</div>
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<div>Cheers,</div>
<div>Arvid<br>
<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> users <users-bounces@lists.scilab.org> on behalf of Stéphane Mottelet <stephane.mottelet@utc.fr><br>
<b>Sent:</b> Saturday, October 22, 2016 4:33:22 PM<br>
<b>To:</b> Users mailing list for Scilab<br>
<b>Subject:</b> Re: [Scilab-users] scilab and "parallelization" objectives</font>
<div> </div>
</div>
<div>
<div></div>
<div>Hello,</div>
<div><br>
</div>
<div>As parallel_run is using child Scilab processes, the std output of all children is the terminal where you started Scilab and not the Scilab console.</div>
<div><br>
</div>
<div>S.</div>
<div><br>
Le 22 oct. 2016 à 15:11, <a href="mailto:paul.carrico@free.fr">paul.carrico@free.fr</a> a écrit :<br>
<br>
</div>
<blockquote type="cite">
<div>
<div class="pre" style="margin:0; padding:0; font-family:monospace">
<div class="pre" style="margin:0; padding:0; font-family:monospace">Thanks claus</div>
<div class="pre" style="margin:0; padding:0; font-family:monospace"> </div>
<div class="pre" style="margin:0; padding:0; font-family:monospace">I completely forgot this features (that I've ever tested but once only)</div>
<div class="pre" style="margin:0; padding:0; font-family:monospace"> </div>
<div class="pre" style="margin:0; padding:0; font-family:monospace">The first trial "works" if I focus only on the results, but as one can see on the screenshot, a part of the message appears in the console and the second one in the terminal (why ????).</div>
<div class="pre" style="margin:0; padding:0; font-family:monospace"> </div>
<div class="pre" style="margin:0; padding:0; font-family:monospace">The code is the following one for my very basic exemple (I used 2 CPU's here because of my laptop features)</div>
<div class="pre" style="margin:0; padding:0; font-family:monospace"> </div>
<div class="pre" style="margin:0; padding:0; font-family:monospace">Paul</div>
<div class="pre" style="margin:0; padding:0; font-family:monospace"> </div>
<div class="pre" style="margin:0; padding:0; font-family:monospace">######################################################################################</div>
<div class="pre" style="margin:0; padding:0; font-family:monospace">
<pre><span>mode</span><span>(</span><span>0</span><span>)</span>
<span>function</span> <span>status</span><span>=</span><span>test</span><span>(</span><span>i</span><span>, </span><span>t</span><span>)</span>
<span>printf</span><span>(</span><span>"</span><span>function %d is launched with a pause of %g second(s)\n</span><span>"</span><span>,</span><span>i</span><span>,</span><span>t</span><span>)</span><span>;</span>
<span>sleep</span><span>(</span><span>t</span><span>*</span><span>1000</span><span>)</span><span>;</span>
<span>printf</span><span>(</span><span>"</span><span>function %d is endeed\n\n</span><span>"</span><span>,</span><span>i</span><span>)</span><span>;</span>
<span>status</span> <span>=</span> <span>0</span><span>;</span>
<span>endfunction</span>
<span>// the duration is expressed in second(s)</span>
<span>//status = test(1,1);</span>
<span>//status = test(2,3);</span>
<span>//status = test(3,5);</span>
<span>//status = test(4,7);</span>
<span>number</span> <span>=</span> <span>[</span><span>1</span> <span>2</span><span>]</span>
<span>duration</span> <span>=</span> <span>[</span><span>1</span> <span>3</span><span>]</span>
<span>status</span> <span>=</span> <span>parallel_run</span><span>(</span><span>number</span><span>,</span><span>duration</span><span>,</span><span>"</span><span>test</span><span>"</span><span>)</span></pre>
</div>
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<div class="pre" style="margin:0; padding:0; font-family:monospace"> </div>
<div class="pre" style="margin:0; padding:0; font-family:monospace">Le 2016-10-22 10:26, Claus Futtrup a écrit :
<blockquote type="cite" style="padding:0 0.4em; border-left:#1010ff 2px solid; margin:0">
Hi Paul<br>
<br>
Have you/he/she looked into parallel_run() ?<br>
<br>
Best regards,<br>
Claus<br>
<br>
On 22-10-2016 09:33, <a href="mailto:paul.carrico@free.fr">paul.carrico@free.fr</a> wrote:<br>
<br>
<blockquote type="cite" style="padding:0 0.4em; border-left:#1010ff 2px solid; margin:0">
Hi All<br>
<br>
Maybe my previous email was unclear, but the example hereafter<br>
summarizes what I would like to do :<br>
- here function is launched when the previous is finished<br>
("sequential way"),<br>
- it is possible to launch them simultaneously?<br>
<br>
_Nb_: I'm currently on Scilab 5.5.4 and maybe only the latest beta<br>
release allows this ?<br>
<br>
If I can do this, then "bingo"<br>
<br>
Thanks<br>
<br>
Paul<br>
---------------------------------------------------------------<br>
<br>
mode(0)<br>
<br>
function status=test(i, t)<br>
printf("function %d is launched\n",i);<br>
sleep(t*1000);<br>
printf("function %d is endeed\n\n",i);<br>
status = 0;<br>
endfunction<br>
<br>
// the duration is expressed in second(s)<br>
status = test(1,1);<br>
status = test(2,3);<br>
status = test(3,5);<br>
status = test(4,7);<br>
<br>
-------------------------<br>
<br>
DE: "Paul Carrico" <<a href="mailto:paul.carrico@esterline.com">paul.carrico@esterline.com</a>><br>
À: "International users mailing list for Scilab.<br>
(<a href="mailto:users@lists.scilab.org">users@lists.scilab.org</a>)" <<a href="mailto:users@lists.scilab.org">users@lists.scilab.org</a>><br>
ENVOYÉ: Jeudi 20 Octobre 2016 15:41:18<br>
OBJET: [Scilab-users] scilab and "parallelization" objectives<br>
<br>
Dear All,<br>
<br>
My internship had an interesting request and I’m not able to<br>
answer to him JJ<br>
<br>
The context is the following one:<br>
<br>
- We are using a parallel finite element solver on 4<br>
PROCESSORS (under Linux),<br>
<br>
- We are performing optimization with an external<br>
optimizer,<br>
<br>
- Scilab has been interfaced with both the optimizer and<br>
the solver,<br>
<br>
- For the moment, the optimization loops are<br>
“basically” performed using the parallelization capabilities of<br>
the solvers.<br>
<br>
In practice, Scilab “runs” the solver and “waits” the end of<br>
the simulation (always using 4 processors) before calculating the<br>
cost function value, giving the later value to the optimizer and<br>
then closing.<br>
<br>
IMAGINE THAT NOW we would like to run 4 DIFFERENT SIMULATIONS EACH<br>
ON 1 PROCESSOR in order to determine the gain (CPU time) … how to<br>
proceed ?<br>
<br>
In practice Scilab must be able to :<br>
<br>
- Launch 1rst calculation and to handback …<br>
<br>
- … to launch the 2nd one … and so on<br>
<br>
We can imagine creating a function per calculation (and I prefer in<br>
order to mix stuffs), then running independently but at the same<br>
time the different functions.<br>
<br>
Honestly I’ve never done this before and I’m wondering how to<br>
proceed … or if it is possible : any feedback on it ?<br>
<br>
Thanks and regards<br>
<br>
Paul<br>
<br>
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