No, I'm pretty sure it doesn't: https://github.com/JuliaOpt/NLopt.jl/blob/master/REQUIRE
I just realized one of the opt runs is actually calling out to the LightXML package. I think it is likely the mem leak is in there. We create a very large number of XML objects, dump them to strings and then don't hold on to them from the Julia side. I guess it might not be releasing them on the C side of LightXML or in the julia binding. Just a guess though. Cheers, Robert On Thu, Jan 22, 2015 at 12:08 AM, Jameson Nash <vtjn...@gmail.com> wrote: > Does NLopt use the FastAnonymous package to create function closures? > > On Wed, Jan 21, 2015 at 4:58 PM Robert Feldt <robert.fe...@gmail.com> > wrote: > >> I am running optimizations using different algorithms within the NLopt.jl >> package. Memory slowly builds until the julia process is killed. I thought >> the problem might be that the NLopt opt objects leaks some memory so I >> tried the following code after each optimization run (there is a big loop >> running multiple optimization runs after each other) to release the >> NLopt::Opt object saved in my nlopt in "slot" named "opt" object: >> >> # Overwrite the opt object to try to give back its memory. There seems >> to be mem leaks >> # when we have long-running opt runs: >> NLopt.destroy(nlopt.opt) # Not sure what is the effect of this but we >> try... >> nlopt.opt = nothing >> gc() >> >> but memory keeps building. I guess it could be in my (large and very >> complex and thus hard to distill down to an example) code used in the >> fitness function that NLopt calls out to but this is normal Julia code and >> should be garbage collected. I realize it is hard to debug without more >> concrete code but if anyone has ideas on why the Julia process might slowly >> but continuously be increasing its mem use (I'm running on a MacBoock Pro >> with Yosemite) I'd appreciate any tips/pointers or how to debug further. >> >> Each NLopt run is on the order of 15 minutes with around 2000 function >> evaluations. >> >> Regards, >> >> Robert Feldt >> >> -- Best regards, /Robert Feldt -- Tech. Dr. (PhD), Professor of Software Engineering Blekinge Institute of Technology, Software Engineering Research Lab, and Chalmers, Software Engineering Dept Explanea.com - Igniting your Software innovation robert.feldt (a) bth.se or robert.feldt (a) chalmers.se or robert.feldt (a) gmail.com Mobile phone: +46 (0) 733 580 580 http://www.robertfeldt.net <http://www.cse.chalmers.se/~feldt>
