Hi folks, 

  I'm doing some stuff with ASMVankaPC applied to an extruded mesh (so I'm working on a patch of columns) and a mixed system, so the matrices are getting relatively big. Does anyone have any tips on how to use different algorithms with the solver to use less memory?

One idea I had is that I think that it would be possible to eliminate down to one single variable, solve that and back substitute. It looks like MUMPS has some Schur complement options, for example, but I don't know how to pipe the DOFs I want to eliminate down to MUMPS - is it possible?

all the best

--cjc