[petsc-dev] questions on new include organization

[Jed Brown]

On Tue, Feb 12, 2013 at 11:31 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:

> Then would depend on how we would define how the grouping is handled and
> how the GetIndices would be used.  Some possibilities
>
> 1) ISGetIndices(is,int group_number, &indices) gives the indices for a
> group or
>

So by convention, group 0 is "offset" and group 1 is "size"? Do we need an
arbitrary number of groups? (Making the object more general makes it harder
to reason about what it does and harder to write non-implementation code
that manipulates these objects.)


>
> 2) ISGetIndices(is,&indices) simply returns all the indices for all the
> groups
>

That would need to be packed somehow.
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