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<div class="moz-cite-prefix">Dear George,<br>
<br>
it seems like you don't have a pure LP, but also some quadratic
constraints inside your problem. For example, the constraint that
SoPlex complains about contains the product of RadioAirtime#1 and
RadioLossRate#1.<br>
<br>
You can model this with ZIMPL and it is even possible to express
this problem as an LP file, but it is not purely linear anymore.<br>
<br>
Therefore, SoPlex cannot solve it, but you need to use SCIP for
that. Was there any particular reason why you wanted to use SoPlex
instead of SCIP? If so, we might find a way to do the same within
SCIP.<br>
<br>
Best,<br>
Gerald<br>
<br>
On 26.07.2013 10:13, George Nychis wrote:<br>
</div>
<blockquote
cite="mid:CA+7oygczoODrt9R0yq6R2F4eYxg0h_-8dWvPsHCOBYUVH_MzCg@mail.gmail.com"
type="cite">
<div dir="ltr">I am trying to run an LP file through soplex that
was generated by zimpl. However, when I try to I get:
<div><br>
</div>
<div>
<div>Loading LP file spectrum_optimization.lp</div>
<div>ELPFRD15 Syntax error in line 205</div>
<div>error while reading file "spectrum_optimization.lp"</div>
</div>
<div><br>
</div>
<div>This points to the following lines:</div>
<div><br>
</div>
<div>
<div> airtime_eq_re@19:</div>
<div> - RadioAirtime#1 + GoodAirtime#1</div>
<div> + [ + RadioAirtime#1 * RadioLossRate#1 ] <--- line
205</div>
<div> = 0</div>
</div>
<div><br>
</div>
<div>I've attached the zmpl files and the lp output. I am able
to run this through scip using both of these commands:</div>
<div>scip -f spectrum_optimization.zpl</div>
<div>scip -f spectrum_optimization.lp</div>
<div><br>
</div>
<div>So, something seems to be wrong when parsing with soplex.
I'd greatly appreciate any help.</div>
<div><br>
</div>
<div>Thanks!</div>
<div>George</div>
<div><br>
</div>
<div><br>
</div>
</div>
<br>
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<br>
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