On Sun, Apr 05, 2009 at 05:11:51PM -0500, Matthew Knepley wrote: > On Sun, Apr 5, 2009 at 2:54 PM, Anders Logg <[email protected]> wrote: > > Dirichlet BC would need to be added in/after each multiplication and > it should be possible to build it into the mult() operator and make it > efficient. > > > I still think the best way to handle this is to eliminate them, as I talked > about > last time at Simula. > > Matt
I think we're in position to do that now with the new FunctionSpace class. One could allow restrictions to be imposed, for example V.restrict(bc); But I haven't seen any good numbers to indicate it's worth the effort. How much better is it to eliminate, condition numbers etc for letting the constrained dofs just sit along? -- Anders
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