I'm using the MMA method, I believe it requires a hessian approximation? What are the alternatives? I thought this method was popular for topology optimization, where usually many variables are employed.
Take care Miguel On Fri, Sep 5, 2014 at 8:21 AM, Grey Gordon <[email protected]> wrote: > Sounds like you may just be running out of memory causing a segfault. If > you are using some derivative method that requires a hessian approximation, > 1000 x 1000 matrix is quite large. > > Best, > Grey Gordon > > > On Sep 4, 2014, at 11:51 PM, Miguel Angel Salazar de Troya < > [email protected]> wrote: > > Hi all > > I'm trying to run nlopt inside of a loop. For each iteration, I increase > the number of variables to optimize, using the last result as initial > estimation (it's a field in a mesh that has been refined, hence the > increase in the number of variables) and inialize again nlopt, but I'm > running into some segfault problems that are hard to track (it only happens > with a large number of variables, +1000 thousand, and valgrind runs really > slow for those cases). > > I would just like to know if this is possible (running nlopt inside a for > loop) and what is the best way to do it. > > Thanks > Miguel > -- > *Miguel Angel Salazar de Troya* > Graduate Research Assistant > Department of Mechanical Science and Engineering > University of Illinois at Urbana-Champaign > (217) 550-2360 > [email protected] > > _______________________________________________ > NLopt-discuss mailing list > [email protected] > http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/nlopt-discuss > > > -- *Miguel Angel Salazar de Troya* Graduate Research Assistant Department of Mechanical Science and Engineering University of Illinois at Urbana-Champaign (217) 550-2360 [email protected]
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