[mlpack] maximum problem size for PrimalDualSolver?

[Joe Dinius]

Agreed.  I have made the change in the sdrsac-cpp repo and the error seen
previously is no longer observed.  Now I need to verify correct execution.
Thanks, Ryan!

On Mon, Sep 2, 2019 at 1:38 PM Ryan Curtin <ryan at ratml.org> wrote:

> On Mon, Sep 02, 2019 at 01:35:18PM -0700, Joe Dinius wrote:
> > Ryan,
> >
> > Thanks so much for your awesome explanation and for looking into it!
> It's
> > really amusing (to me anyways) that, just before reading this, I was
> going
> > through the armadillo docs and read the following:
> >
> >    - *Can I use the C++11 auto keyword with Armadillo objects and/or
> >    expressions?*
> >    Use of C++11 *auto* is *not recommended* with Armadillo objects and
> >    expressions. Armadillo has a template meta-programming framework which
> >    creates lots of short lived temporaries that are not handled by
> *auto*.
> >
> > and *immediately* thought "maybe this is what's happening with my SDP
> > code".  HAHAHA.  I will try it out and let you know how it goes.
>
> Ha!  Yeah, hopefully it works.  But even so like I said it's a little
> strange for auto to fail in this way, since the type of n_rows should be
> easily deducible.
>
> --
> Ryan Curtin    | "What? Facts?"
> ryan at ratml.org |   - Joe Cairo
>
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