[Ipopt] size limitations in precompiled binaries for IpOpt?

Stefan Vigerske stefan at math.hu-berlin.de
Thu Oct 27 18:54:27 EDT 2011


no, the only limits are the size of your memory and the address space.
But your problem size does not seem large.


> For the precompiled binaries (3.9.2 in particular), are there any limitations on the sizes of the arrays?
> I’m working with a problem of packing unequal size circles, which works fine for up to 20 circles but
> dies for 21 circles.  The error message I get implies that one of the arrays is the wrong size.
> I’m using Mathematica to calculate the objective function, constraints, and the various derivatives.
> The problem could also be in my interface to Mathematica.
> Here’s the beginning of the log for 20 circles:
> This is Ipopt version 3.9.2, running with linear solver mumps.
> Number of nonzeros in equality constraint Jacobian...:        0
> Number of nonzeros in inequality constraint Jacobian.:      820
> Number of nonzeros in Lagrangian Hessian.............:      820
> Total number of variables............................:       41
>                       variables with only lower bounds:        0
>                  variables with lower and upper bounds:       41
>                       variables with only upper bounds:        0
> Total number of equality constraints.................:        0
> Total number of inequality constraints...............:      210
>          inequality constraints with only lower bounds:        0
>     inequality constraints with lower and upper bounds:      210
>          inequality constraints with only upper bounds:        0
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