https://forums.autodesk.com/t5/flexsim-forum/bug-in-how-many-cores-to-use-with-optimizer/m-p/13526469#M36197 <P>This has been fixed in 16.2.1.</P> Mon, 17 Oct 2016 15:44:55 GMT philboboADSK 2016-10-17T15:44:55Z https://forums.autodesk.com/t5/flexsim-forum/bug-in-how-many-cores-to-use-with-optimizer/m-p/13526468#M36196 <P><I>[ FlexSim 16.2.0 ]</I></P><P>Hi,</P><P>I was running the optimizer in FlexSim 16.2 on my machine with 8 cores (intel i-7 4700MQ so hyperthreading) and noticed that if I run an experiment that only needs say 4 cores (e.g. 4 scenarios and 1 replication each) then if I run the optimizer after it then only 4 cores are used by the optimizer although 8 cores could be used as there are more than 4 different scenarios to consider for the optimizer. But if I run the experimenter so that it uses all 8 cores then the optimizer will use all the 8 cores if run after the experimenter. I am using the value of zero for "Max Cores" on the Advanced tab. Also, if I run the experimenter with 4 cores and then change the "Max Cores" value to 8 after the experiment is done then all 8 are used. But if I run the experiment again that uses only 4 cores then only the 4 cores are used for the next optimization round. If I stop the optimizer and run it again then all 8 cores are used. So the problem is seen only if running the optimizer directly after the experimenter when a lesser amount of cores was used in the experimenter than the optimizer could use.</P><P>It seems that the experimenter sets the value of used cores when run. Is this a bug or am I using the optimizer incorrectly? Or does it have something to do with the hyperthreading?</P><P>See the experimenter/optimizer tutorial model attached (<A href="https://answers.flexsim.com/storage/attachments/2687-experimenterexample.fsm">experimenterexample.fsm</A>) where the issue is seen. </P><P>Thank you!</P><P>Kind regards,</P><P>Axel</P> Wed, 28 Sep 2016 09:17:03 GMT https://forums.autodesk.com/t5/flexsim-forum/bug-in-how-many-cores-to-use-with-optimizer/m-p/13526468#M36196 axel_kohonen 2016-09-28T09:17:03Z https://forums.autodesk.com/t5/flexsim-forum/bug-in-how-many-cores-to-use-with-optimizer/m-p/13526469#M36197 <P>This has been fixed in 16.2.1.</P> Mon, 17 Oct 2016 15:44:55 GMT https://forums.autodesk.com/t5/flexsim-forum/bug-in-how-many-cores-to-use-with-optimizer/m-p/13526469#M36197 philboboADSK 2016-10-17T15:44:55Z https://forums.autodesk.com/t5/flexsim-forum/bug-in-how-many-cores-to-use-with-optimizer/m-p/13526470#M36198 <P>Hi Phil,</P><P>Great! Thank you!</P><P>Axel </P> Tue, 18 Oct 2016 04:19:14 GMT https://forums.autodesk.com/t5/flexsim-forum/bug-in-how-many-cores-to-use-with-optimizer/m-p/13526470#M36198 axel_kohonen 2016-10-18T04:19:14Z