Freeing up memory occupied by mex ?

[Rishi Amrit]

Hi,

    I am using IPOPT ( https://projects.coin-or.org/Ipopt ) nonlinear solver
for solving some large scale NLP's. It's used with Octave via mex interface
provided along with the package. Quite expectedly, while solving large scale
problems, memory usage will be high. Once an IPOPT call is finished, Octave
still uses a lot of my system memory untill I exit. If I save all the
variables in the workspace in a mat file, after the ipopt call, exit octave,
restart it and load the variables back, I do not have Octave using all the
memory it was using in the last call. So it seems the mex interface did not
clean up the memory before coming out of the call. Is there a way to free up
all that heavy memory that was being used by the mex function, without
having to restart octave ?

Thanks,

Best,
Rishi
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