You might try with -pc_type jacobi (and remove mat_type hypre) to get a
baseline. Does that work and how much memory usage do you see?
>From there you could try -pc_type gamg to test the built-in AMG.
However, 32M equations in 3D (Lapalcian?) might be too much. AMG does use a
lot of memory.
On Fri
On Fri, Dec 3, 2021 at 7:57 AM Karthikeyan Chockalingam - STFC UKRI <
karthikeyan.chockalin...@stfc.ac.uk> wrote:
> Hello,
>
>
>
> I am able to successfully run hypre on gpus but the problem seems to
> consumption a lot of memory. I ran ksp/ksp/tutorial/ex45 on a grid of 320
> x 320 x 320 using 6
Hello,
I am able to successfully run hypre on gpus but the problem seems to
consumption a lot of memory. I ran ksp/ksp/tutorial/ex45 on a grid of 320 x
320 x 320 using 6 gpus by the following options
mpirun -n 6 ./ex45 -da_grid_x 320 -da_grid_y 320 -da_grid_z 320 -dm_mat_type
hypre -dm_vec_t
