[petsc-users] ksp solve error with nested matrix

[Lawrence Mitchell]

On 09/02/17 17:29, Barry Smith wrote:
> 
>> On Feb 8, 2017, at 11:39 PM, Dave May <dave.mayhem23 at gmail.com> wrote:
>>
>> Any time you modify one of the submats, you need to call assembly begin/end on that sub matrix AND on the outer matnest object.
> 
>    Weird, and prone to errors it seems to me. Perhaps this needs to be rethought

If you just call assembly begin/end on the outer object, that takes
care of calling it on the nested matrices.  But that's still not
ideal, I think.

Lawrence

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