<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hi Yuji,<div class=""><br class=""></div><div class="">Thank you for checking my instance.</div><div class=""><br class=""></div><div class="">We also tried setting <span style="font-family: "Helvetica Neue"; font-size: 13px;" class="">CheckGapInLC=TRUE but it did not help either.</span></div><div class=""><font face="Helvetica Neue" size="2" class=""><br class=""></font></div><div class=""><font face="Helvetica Neue" size="2" class="">Best regards,</font></div><div class=""><font face="Helvetica Neue" size="2" class="">Sergey</font></div><div class=""><font face="Helvetica Neue" size="2" class=""><br class=""></font></div><div class=""><div><br class=""><blockquote type="cite" class=""><div class="">On 11 Sep 2022, at 17:42, Yuji Shinano <<a href="mailto:shinano@zib.de" class="">shinano@zib.de</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="">Hi Sergey,<br class=""><br class="">Thanks for the instance and configuration. I checked it.<br class="">Sorry, in the current implementation of FiberSCIP and ParaSCIP, controlling it only with the SCIP parameter looks difficult when it takes time to solve<br class="">(if it can be solved in the racing stage, the "NoPreprocessingInLC = TRUE" might work).<br class="">And it looks like the setting SCIP parameters for that is not good for FiberSCIP and ParaSCIP in a sense how it work is not clear.<br class="">I will add the feature rather UG side in the future. I think it can not control vividly, but when LC recognized that gap is reached,<br class="">then LC interrupts all computations from the UG side.<br class=""><br class="">Best regards,<br class="">Yuji<br class=""><br class="">--------------<br class="">Hi Yuji,<br class=""><br class="">Here are the instance and configuration files attached.<br class=""><br class="">Thank you in advance,<br class="">Best regards,<br class="">Sergey<br class=""><br class=""><br class="">> On 10 Sep 2022, at 08:55, Yuji Shinano <<a href="mailto:shinano@zib.de" class="">shinano@zib.de</a>> wrote:<br class="">><br class="">> Hi Sergey,<br class="">><br class="">> Can you send me the instance and parameters (UG and SCIP)? I will check it.<br class="">><br class="">> Best regards,<br class="">> Yuji<br class="">><br class="">> On 10.09.22 6:50, Sergey Smirnov wrote:<br class="">>> Hi Yuji,<br class="">>><br class="">>> Thank you for the suggestion. I tried to set NoPreprocessingInLC = TRUE in ug.set but both fscip and parascip still solved till zero gap.<br class="">>><br class="">>> Best regards,<br class="">>> Sergey<br class="">>><br class="">>>> On 9 Sep 2022, at 21:20, Yuji Shinano <<a href="mailto:shinano@zib.de" class="">shinano@zib.de</a>> wrote:<br class="">>>><br class="">>>> Hi,<br class="">>>><br class="">>>> This is one of the frequently asked questions. FiberSCIP/ParaSCIP solves the presolved instance in the Solvers.<br class="">>>> Therefore, the value is applied to solve the presolved instance. If you would like to control the gap more precisely,<br class="">>>> one way would be to set<br class="">>>> NoPreprocessingInLC = TRUE<br class="">>>> In the UG parameter file.<br class="">>>> However, this means that layered presolving does not work and may decrease its performance.<br class="">>>> Please try to run with the above parameter.<br class="">>>><br class="">>>> Best,<br class="">>>> Yuji<br class="">>>><br class=""><br class=""><br class="">On 09.09.22 19:45, Sergey Smirnov wrote:<br class=""><blockquote type="cite" class="">Hello, SCIP community,<br class=""><br class="">I have problems setting relative gap in parallel version of SCIP 8.0.1.<br class=""><br class="">When I set limits/gap = .5e-01 in scip.set and run scip like scip -f problem.cip -s scip.set scip stops after reaching the gap specified. However, fscip and parascip seem to ignore this parameter. For example, I run fscip the following way and it solves until optimality:<br class="">fscip ug.set problem.cip -s scip.set<br class=""><br class="">What is the correct way to set relative gap in fscip/parascip?<br class=""><br class="">Thank you in advance,<br class="">Best regards,<br class="">Sergey<br class=""><br class=""><br class="">_______________________________________________<br class="">Scip mailing list<br class=""><a href="mailto:Scip@zib.de" class="">Scip@zib.de</a><br class="">https://listserv.zib.de/mailman/listinfo/scip<br class=""></blockquote><br class=""><br class="">-- <br class="">--------------------------------------------------<br class="">Yuji Shinano<br class="">Zuse Institute Berlin<br class="">Takustrasse 7, 14195 Berlin-Dahlem, Germany<br class="">Phone:+49 30 84185-477, Fax:+49 30 84185-269<br class=""><br class="">_______________________________________________<br class="">Scip mailing list<br class=""><a href="mailto:Scip@zib.de" class="">Scip@zib.de</a><br class="">https://listserv.zib.de/mailman/listinfo/scip<br class=""></div></div></blockquote></div><br class=""></div></body></html>