Re: [Libmesh-users] NonlinearImplicitSystem Jacobian

2015-09-29 Thread Harshad Sahasrabudhe
> > How far non-local and how sparse are you talking? If i and j are on > neighboring elements we have some options for automatically expanding > the Jacobian that far. If i and j might be halfway across the mesh > then support is more limited and potentially much more expensive. I basically ha

Re: [Libmesh-users] NonlinearImplicitSystem Jacobian

2015-09-29 Thread Harshad Sahasrabudhe
> > How far non-local and how sparse are you talking? If i and j are on > neighboring elements we have some options for automatically expanding > the Jacobian that far. If i and j might be halfway across the mesh > then support is more limited and potentially much more expensive. I basically ha

Re: [Libmesh-users] NonlinearImplicitSystem Jacobian

2015-09-29 Thread Roy Stogner
On Tue, 29 Sep 2015, Harshad Sahasrabudhe wrote: > I'm solving a system of equations in which I need non-local contributions > to the Jacobian, as in Ke(i,j) where i and j are dof indices which might > not be on the same element. Can this be done in NonlinearImplicitSystem? If > yes, then how is