[petsc-dev] [petsc-maint] running CUDA on SUMMIT

[Jed Brown]

Brad Aagaard via petsc-dev <petsc-dev at mcs.anl.gov> writes:

> Q2 is often useful in problems with body forces (such as gravitational 
> body forces), which tend to have linear variations in stress.

It's similar on the free-surface Stokes side, where pressure has a
linear gradient and must be paired with a stable velocity space.

Regarding elasticity, it would be useful to have collect some
application problems where Q2 shows a big advantage.

We should be able to solve Q2 at the same or lower cost per dof to Q1
(multigrid for this case isn't off-the-shelf at present, but it's
something we're working on).

> On 8/14/19 2:51 PM, Mark Adams via petsc-dev wrote:
>> 
>> 
>>     Do you have any applications that specifically want Q2 (versus Q1)
>>     elasticity or have some test problems that would benefit?
>> 
>> 
>> No, I'm just trying to push things.