Hi,
<div><br></div><div>I am testing Symphony with a simple example in AMPL format:</div><div><div><font face="'courier new', monospace"><br></font></div><div><font face="'courier new', monospace"><div>symphony -F file.mod -D file.dat</div>
</font></div><div><font face="'courier new', monospace"><br></font></div></div><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><div><div><span style="font-family:'courier new',monospace">-- file.mod ------</span><span style="font-family:'courier new',monospace">------------</span></div>
</div><div><div><font face="'courier new', monospace">var y >= 0;</font></div></div><div><div><font face="'courier new', monospace"><br></font></div></div><div><div><font face="'courier new', monospace">minimize ObjectiveFunction: y;</font></div>
</div><div><div><font face="'courier new', monospace"><br></font></div></div><div><div><font face="'courier new', monospace">subject to C1: y >= 1.0;</font></div></div><div><div><font face="'courier new', monospace">subject to C2: y <= 2.0;</font></div>
</div><div><div><font face="'courier new', monospace">subject to C3: y = 1.1;</font></div></div><div><div><font face="'courier new', monospace"><br></font></div></div><div><div><font face="'courier new', monospace">end;</font></div>
</div><div><span style="font-family:'courier new',monospace">------------------</span><span style="font-family:'courier new',monospace">------------</span></div><div><span style="font-family:'courier new',monospace"><br>
</span></div><div><div><span style="font-family:'courier new',monospace">-- file.dat ------</span><span style="font-family:'courier new',monospace">------------</span></div></div><div><span style="font-family:'courier new',monospace">data;</span></div>
<div><span style="font-family:'courier new',monospace">end;</span></div><div><div><span style="font-family:'courier new',monospace">------------------</span><span style="font-family:'courier new',monospace">------------</span></div>
</div></blockquote><div><span style="font-family:'courier new',monospace"><br></span></div><div><font face="arial, helvetica, sans-serif">The solution given by the program is 2.0 instead of 1.1 (see attached file). If I choose maximize, the solution is 1.0. If I remove C3, the problem is unbounded. Is there any option that I missing?</font></div>
<div><font face="arial, helvetica, sans-serif"><br></font></div><div><font face="arial, helvetica, sans-serif">I compiled Sympthony in SUSE Linux with gcc 4.5.1 with the following commands:</font></div><div><font face="arial, helvetica, sans-serif"><br>
</font></div><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><div><font face="'courier new', monospace">./configure --with-gmpl --enable-openm</font></div><div><font face="'courier new', monospace">make</font></div>
</blockquote><div><font face="arial, helvetica, sans-serif"><br></font></div><div><font face="arial, helvetica, sans-serif">Thanks a lot,</font></div><div><font face="arial, helvetica, sans-serif">Federico.</font></div><div>
<br></div>-- <br>Federico Larumbe<br>École Polytechnique de Montréal<br>Montréal H3C 3A9<br><br>Group for Research in Decision Analysis (GERAD)<br>tel +1 514 3406053 xt 6931<br>fax +1 514 3405665<br>
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