[petsc-dev] Non-scalable matrix operations

[Jed Brown]

On Fri, Dec 23, 2011 at 08:09, Matthew Knepley <knepley at gmail.com> wrote:

> We need ISGlobalToLocalMappingApply(). This could be done with an STL map
> :)
>

I'm not convinced it's really necessary, except to work with legacy
interfaces. But it would be easy to sort the global indices in the
ISLocalToGlobalMapping so that each lookup could be a binary search.
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