[petsc-dev] Fwd: rename SNES methods ls, tr etc

[Anton Popov]

On 12/6/12 7:30 PM, Jed Brown wrote:
> Matt and I have talked about this many, many times. Removing Dirichlet 
> dofs entirely is inconvenient for structured grids and does not allow 
> any data structure reuse in cases of phase change or similar where a 
> node changes from Dirichlet to Neumann or vice-versa. It is also much 
> less convenient for visualization because you need to embed the 
> solution in the larger space before visualizing.
>
> I'm not a big fan of having two ways to do things, so since it's 
> sometimes necessary, I usually recommend always leaving the Dirichlet 
> dofs in using the procedure explained above. Regardless, the 
> implementation is definitely not more complicated in defect correction 
> mode than in "non-defect Picard". Dave May asserts that it is simpler 
> to think about and to implement in defect correction mode.
>
> On Thu, Dec 6, 2012 at 8:39 AM, Matthew Knepley <knepley at gmail.com 
> <mailto:knepley at gmail.com>> wrote:
>
>     I know Jed likes this, but I think it is simpler to think about
>     the problem with
>     Dirichlet unknowns removed from the solve. We can do both.
>
>
Jed, Matt,
it's clear now
thanks!

Anton
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