[petsc-users] jacobians for multicomponent problems

domenico lahaye domenico_lahaye at yahoo.com
Wed Jun 24 02:39:25 CDT 2015

Would the same work for non-structured problems, for instance for power flow equations? 

Thx. Domenico Lahaye. 

      From: Matthew Knepley <knepley at gmail.com>
 To: Gideon Simpson <gideon.simpson at gmail.com> 
Cc: petsc-users <petsc-users at mcs.anl.gov> 
 Sent: Wednesday, June 24, 2015 5:05 AM
 Subject: Re: [petsc-users] jacobians for multicomponent problems
On Tue, Jun 23, 2015 at 7:52 PM, Gideon Simpson <gideon.simpson at gmail.com> wrote:

Suppose I have a problem for which the field variable has multiple components, in this case real and imaginary parts, and I have created a DM with two degrees of freedom.  When assembling a Jacobian associated with a nonlinear problem on this data, is there any data management accounting for the different components that makes this “easier?”

DMDA knows about components so that MatStencil has a .c slot for indices. Is that what you mean?


What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.
-- Norbert Wiener

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