[petsc-dev] Mat/DM dependency

[Barry Smith]

On Jan 1, 2010, at 7:12 PM, Jed Brown wrote:

> On Fri, 1 Jan 2010 14:50:33 -0600, Matthew Knepley  
> <knepley at gmail.com> wrote:
>> That is definitely a problem.

   I am not convinced yet that this is a problem. The dependency is  
only in one specific Mat implementation that should not require  
pulling in the DM library unless that specific Mat implementation is  
specifically used. Since that specific Mat implementation is not used  
in the Mat examples it should not require pulling in the DM library.

    Barry


>> It makes me think we need an R^N part just
>> like we have now, and then a more general part with operators on  
>> fiber
>> bundles.
>
> The question is whether it is important to separate that stuff (which
> depends on both Vec and DM) from DM (which already depends on Vec).
>
> Jed