From: Derek G. <fri...@gm...> - 2009-03-25 16:14:40
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So... I got a question from one of my colleagues this morning about adding just one more equation (one more row and column to the matrix) to an existing NonlinearImplicitSystem. Essentially, this is adding one global scalar equation. In this case both the row and column are actually going to be dense... Any ideas on this? It's almost like I need to add a node that's connected to every other node... or something. Thanks, Derek |
From: John P. <jwp...@gm...> - 2009-03-25 16:33:44
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On Wed, Mar 25, 2009 at 11:14 AM, Derek Gaston <fri...@gm...> wrote: > So... I got a question from one of my colleagues this morning about adding > just one more equation (one more row and column to the matrix) to an > existing NonlinearImplicitSystem. Essentially, this is adding one global > scalar equation. In this case both the row and column are actually going to > be dense... > Any ideas on this? It's almost like I need to add a node that's connected > to every other node... or something. Sounds like he's doing continuation? This has been discussed a few times on the list, in the context of building/solving actual Jacobians. Are you wanting to do this matrix-free? -- John |