Currently the semi-smooth VI solver (VINEWTONSSLS) doesn't play well with
the matrix-free SNES (aka JFNK). This is partly because the calculation of
the merit function gradient requires the action of the transpose of the
Jacobian, which isn't implemented for MATMFFD. Presumably, the merit
Todd,
What's the semi-smooth version in TAO that respect the bounds at the
iterates?
Maybe that would be a good place to attempt a unification with SNESVI.
The current implementation could benefit from refactoring to enable more
composability:
could we use a VIRS method inside VISS and allow for
The ssfls and asfls solvers respect feasibility, ssils and asils do not
(the 'f' stands for feasibility, 'i' for infeasibility)
ssfls - semismooth, feasible, with line search
asfls - active set semismooth, feasible, with line search
On Fri, Aug 1, 2014 at 10:45 AM, Karpeyev, Dmitry
