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<p>Hi Michael,</p>
<div class="moz-cite-prefix">Le 15/05/2022 à 16:05, Michael J.
McCann a écrit :<br>
</div>
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cite="mid:86127540-d513-9900-2aaa-66f103d41062@ieee.org">
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<font size="4">Currently I'm not using the ODE solvers but it's an
area of interest since mathematical modelling is the core of my
business. I'd like to see that in Xcos I can get the full range
of ODE solvers (at least for 'real-only' as distinct from
'complex-number' issues).<br>
<br>
</font></blockquote>
<p><font size="4">In fact among actual available solvers in
Sundials, the only missing in Xcos is ARK/ERKODE, since IDA and
CVODE are already available. We already have a few Runge-Kutta
methods but this is a home made fixed-step</font><font size="4"><font
size="4"> implementation of these, hence the integration in
Xcos could be the next step if new solvers are really needed.</font></font></p>
<font size="4"><font size="4"> </font></font> <font size="4"><font
size="4">S.</font></font>
<blockquote type="cite"
cite="mid:86127540-d513-9900-2aaa-66f103d41062@ieee.org"><font
size="4"> </font><br>
<div class="moz-cite-prefix">On 13/05/2022 12:03, Federico Miyara
wrote:<br>
</div>
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cite="mid:2065684f-e0a3-fa71-3b5f-0271029d0548@fceia.unr.edu.ar">
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<br>
<font face="Courier New">Stéphane,<br>
<br>
I don't regularly use ODE solvers for the time being, but I
think any improvement is valuable and is worth the effort. The
lack or paucity of feedback in this list is not an evidence of
lack of interest for the Scilab users community. It may also
encourage other potential users to move to Scilab. I'm
grateful for your effort and feel reassured that in the event
I need the feature, I'll have better solvers.<br>
<br>
Regards,<br>
<br>
Federico Miyara<br>
</font><br>
<div class="moz-cite-prefix">On 13/05/2022 11:45, Stéphane
Mottelet wrote:<br>
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cite="mid:8f06436c-577e-8fea-4f58-6322ccae4768@utc.fr">
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<p>Hello,</p>
<p>Did anybody give a try to the Windows build ?<br>
</p>
<p>Frankly speaking, if nobody cares about improved numerical
methods in Scilab, things can be left as is, and time could
be spent on other features (but not by me...).</p>
<p>I can also prepare a Linux build, if users of this os want
to test...<br>
</p>
<p>Regards,</p>
<p>S.<br>
</p>
<div class="moz-cite-prefix">Le 27/04/2022 à 17:32, Stéphane
Mottelet a écrit :<br>
</div>
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<p>Hi all, <br>
<br>
The next version of scilab will include a new module
"Sundials". This module provides new full featured ODE
solvers: arkode(), cvode() and DAE solver ida(), all
handling complex numbers and dense/sparse/banded
Jacobians. Each solver has specific features, e.g. ida()
handles DAE, arkode() handles mixed implicit/explicit
Runge-Kutta methods and cvode() can do forward sensitivity
computation. <br>
<br>
The module also includes a general-purpose nonlinear
system solver: kinsol(), who takes advantage of the module
architecture (parsing, computation engine and SUNDIALS
abstraction of various linear solvers). <br>
</p>
<p>Current help pages can be found @ <a
class="moz-txt-link-freetext"
href="https://antispam.utc.fr/proxy/v3?i=SHV0Y1JZQjNyckJFa3dUQiblhF5YcUqtiWCaK_ri0kk&r=T0hnMlUyVEgwNmlmdHc1NTiGTQVgIg9a1MYkHb_GeosOO-jCQ_NnAucfYCLceioT&f=V3p0eFlQOUZ4czh2enpJS67gBdM2WVME2HqVPefA4FpGU6HeKhrEzrhzAHs-d_Wu&u=https%3A//www.utc.fr/~mottelet/scilab/sundials/&k=ZVd0"
moz-do-not-send="true">https://www.utc.fr/~mottelet/scilab/sundials/</a>
and a <b>Windows</b> build of Scilab (in addition to the
already available macOS build) including the new module is
available at <br>
<br>
<a class="moz-txt-link-freetext"
href="https://antispam.utc.fr/proxy/v3?i=SHV0Y1JZQjNyckJFa3dUQiblhF5YcUqtiWCaK_ri0kk&r=T0hnMlUyVEgwNmlmdHc1NTiGTQVgIg9a1MYkHb_GeosOO-jCQ_NnAucfYCLceioT&f=V3p0eFlQOUZ4czh2enpJS67gBdM2WVME2HqVPefA4FpGU6HeKhrEzrhzAHs-d_Wu&u=https%3A//www.utc.fr/~mottelet/scilab_for_macOS.html&k=ZVd0"
moz-do-not-send="true">https://www.utc.fr/~mottelet/scilab_for_macOS.html</a>
<br>
</p>
<p>The help pages propose a lot of examples and two demos
(this section is to be enriched) are available.<br>
</p>
<p>Comments are welcome ! <br>
</p>
<pre class="moz-signature" cols="72">--
Stéphane Mottelet
Ingénieur de recherche
EA 4297 Transformations Intégrées de la Matière Renouvelable
Département Génie des Procédés Industriels
Sorbonne Universités - Université de Technologie de Compiègne
CS 60319, 60203 Compiègne cedex
Tel : +33(0)344234688
<a class="moz-txt-link-freetext" href="https://antispam.utc.fr/proxy/v3?i=SHV0Y1JZQjNyckJFa3dUQiblhF5YcUqtiWCaK_ri0kk&r=T0hnMlUyVEgwNmlmdHc1NTiGTQVgIg9a1MYkHb_GeosOO-jCQ_NnAucfYCLceioT&f=V3p0eFlQOUZ4czh2enpJS67gBdM2WVME2HqVPefA4FpGU6HeKhrEzrhzAHs-d_Wu&u=http%3A//www.utc.fr/~mottelet&k=ZVd0" moz-do-not-send="true">http://www.utc.fr/~mottelet</a>
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<pre class="moz-signature" cols="72">--
Stéphane Mottelet
Ingénieur de recherche
EA 4297 Transformations Intégrées de la Matière Renouvelable
Département Génie des Procédés Industriels
Sorbonne Universités - Université de Technologie de Compiègne
CS 60319, 60203 Compiègne cedex
Tel : +33(0)344234688
<a class="moz-txt-link-freetext" href="http://www.utc.fr/~mottelet" moz-do-not-send="true">http://www.utc.fr/~mottelet</a>
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<pre class="moz-signature" cols="72">--
Stéphane Mottelet
Ingénieur de recherche
EA 4297 Transformations Intégrées de la Matière Renouvelable
Département Génie des Procédés Industriels
Sorbonne Universités - Université de Technologie de Compiègne
CS 60319, 60203 Compiègne cedex
Tel : +33(0)344234688
<a class="moz-txt-link-freetext" href="http://www.utc.fr/~mottelet">http://www.utc.fr/~mottelet</a>
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