[petsc-users] Modifying the structure of a matrix.

[Jed Brown]

On Mon, May 14, 2012 at 10:39 PM, Andrew Spott <andrew.spott at gmail.com>wrote:

> That is what I figure.
>
> I'm curious though if you need to manually determine the local row
> distribution after you do that.  (for example, say you completely remove
> all the values from the local range of one processor… that processor
> wouldn't be utilized unless you redistribute the matrix)
>

What sizes and method are we talking about? Usually additional (compact)
basis functions only make sense to add to one of a small number of
processes.
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