[petsc-users] Confusion with MatGetLocalSubMatrix

[Lawrence Mitchell]

On 19 Dec 2014, at 18:01, Jed Brown <jed at jedbrown.org> wrote:

> Lawrence Mitchell <lawrence.mitchell at imperial.ac.uk> writes:
>> What is ISSetBlockSize for then?  Just hanging information on the IS for use elsewhere?
> 
> The index set would need to be contiguous:

So given my field layout, I think I do have a contiguous set, but this is probably an aside.

Cheers,

Lawrence
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