[petsc-users] Matrix/Vector Assembly

[Matthew Knepley]

On Fri, Mar 30, 2012 at 5:59 PM, Andrew Spott <andrew.spott at gmail.com>wrote:

> When is it necessary to assemble a matrix/vector?  Do I need to do it
> after every change in the matrix/vector?  Or just after "AddValue(s)" type
> functions?


Every change.

   Matt


> -Andrew




-- 
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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