Re: [Libmesh-users] TransientSystem::old_solution vs TransientSystem::old_local_solution

[Yuxiang W. <yw...@vi...>]

Thank you John for the clarification and the pointer! I will read more into
numeric_vector.h.

Have a great one,
Shawn

On Mon, Jun 17, 2019 at 6:05 AM John Peterson <jwp...@gm...> wrote:

>
>
> On Mon, Jun 10, 2019 at 12:52 AM Yuxiang Wang <yw...@vi...> wrote:
>
>> Dear all,
>>
>> Quick question - in using the TransientSystem::old_solution vs
>> TransientSystem::old_local_solution, I noticed that the former seems to be
>> exactly the latter plus two size checks. Therefore, can I simply use the
>> latter (old_local_solution) if I am sure that the DOF number is correct?
>>
>
> I think the main difference between old_solution and old_local_solution is
> that the former is of type PARALLEL while the latter is of type GHOSTED
> (see numeric_vector.h for some description of the different types). The
> latter should be used when doing assembly.
>
> --
> John
>


-- 
Yuxiang "Shawn" Wang, PhD
yw...@vi...
+1 (434) 284-0836