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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I do not believe anyone has completed the GLPK to CLP (or CBC) link. Please look at email from Heinrich Schuchardt:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><a href="https://lists.gnu.org/archive/html/help-glpk/2015-05/msg00012.html">https://lists.gnu.org/archive/html/help-glpk/2015-05/msg00012.html</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Heinrich also sent me the following:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#00B050">“at the time of my testing GMPL postsolve processing did not work. As described in the Wikibook I was only able to export to CSV.<br>
<br>
The relevant coding is in<br>
</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><a href="https://github.com/coin-or/CoinUtils/blob/master/CoinUtils/src/CoinMpsIO.cpp">https://github.com/coin-or/CoinUtils/blob/master/CoinUtils/src/CoinMpsIO.cpp</a></span><br>
<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#00B050">method CoinMpsIO::readGMPL”</span><br>
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<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I tend to use GLPK to write out the “freemps” version of the .mps file, call CBC, have CBC write out a solution file, and then read in the solution file. So
this is by file transfer, and it means that any statements you make after the “solve;” statement in GLPK is missing. It also means a lack of integration with GUSEK.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">-Marc<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> clp-bounces@list.coin-or.org [mailto:clp-bounces@list.coin-or.org]
<b>On Behalf Of </b>Louis Mathieu<br>
<b>Sent:</b> Wednesday, July 08, 2015 8:17 AM<br>
<b>To:</b> clp@list.coin-or.org<br>
<b>Subject:</b> [Clp] switch from gusek (GLPK) to clp<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p style="background:white"><span style="font-family:"Calibri","sans-serif";color:black">Hello,<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif";color:black">I am currently working on a linear programming model.<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif";color:black">I started using GLPK (in fact Gusek). It allowed me to just write my constraints define my variables ... and solve my model.<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif";color:black">I would like to switch to CLP which seems faster for my model.<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif";color:black">Could you explain me how to replace Gusek by CLP ? I understood I have to develop in C++ using the API to use CLP solver, but CLP seems to be solving matrix problems (.mps), is
there any way feed clp using a model ? <o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif";color:black">Regards,<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif";color:black">L.M<o:p></o:p></span></p>
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