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Dear Abde Ali,<br>
<br>
you could try to let SCIP delete variables which are (probably) not
needed anymore. Please have a look at the FAQ:<br>
<a class="moz-txt-link-freetext" href="http://scip.zib.de/doc/html/FAQ.php#howtodeletevariables">http://scip.zib.de/doc/html/FAQ.php#howtodeletevariables</a><br>
<br>
How many variables do you generate? And how much memory do you have
available, how long does it take until you run out of memory?<br>
<br>
Best,<br>
Gerald<br>
<br>
<div class="moz-cite-prefix">Am 14.07.2014 13:42, schrieb Abde Ali
Kagalwalla:<br>
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<div>Dear SCIP developers,<br>
<br>
</div>
Firstly, I would like to thank you for all your help in
working with the SCIP optimization framework. Using
SCIP, we recently had a paper titled "Benchmarking of
Mask Fracturing Heuristics" accepted at the
International Conference on Computer-Aided Design
(ICCAD) 2014. <br>
<br>
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In our project, we are solving very large ILPs using
branch-and-price. We run the optimizer with a fixed time
limit and report the best lower and upper bound. This
works reasonably well for most of our testcases. But there
are some testcases, where the total number of columns
added by the pricer (over several iterations) keeps
increasing and eventually the program uses too much memory
and is killed by the OS. <br>
<br>
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Now my question is if there is a way to avoid this. Is it
possible to specify some limit on the number of active
variables, etc. that could help us avoid this problem ?<br>
<br>
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Regards,<br>
<br>
</div>
Abde Ali <br>
</div>
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