[Ipopt] Dependency of IPOPT on METIS

[Stefan Vigerske]

Hi,

Metis is only a dependency of some linear solvers, it's not used by the 
Ipopt itself.
You can build Ipopt without linear solver, because linear solvers can be 
loaded dynamically at runtime.

Stefan

On 10/28/2013 03:03 PM, Dominique Orban wrote:
> When configuring IPOPT, it's possible to specify where METIS is installed. I'm wondering if METIS is really a (optional) dependency of core IPOPT, or just a dependency of the linear solver.
>
> It turns out that it's perfectly possible to build IPOPT to completion without specifying any linear solver (which seems odd to me), and this raises my question about METIS: what is METIS used for in core IPOPT when it is passed to `configure`?
>
> Thanks.
>
> --
> Dominique
>
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