How to profile/tune hypre BoomerAMG?

[jczhang07]

Hello,
In an openfoam application, I want to use BoomerAMG (via petsc, on CPU for the time being). How do I know the best parameters to apply? Is there any documentation on that?

Thanks!

-Junchao

[victorapm]

Hi Junchao,

The optimal parameters for BoomerAMG depend heavily on the specific problem setup, including the PDE, mesh type, and mesh size. We have some general guidelines available here, which may serve as a useful starting point.

However, fine-tuning requires deeper knowledge of the problem at hand. If you can provide more details about your setup, such as the type of equations you're solving, the mesh characteristics, and any solver settings you're using in PETSc, we can help suggest parameter choices that may improve performance.

[victorapm]

For fine-grained performance profiling, you may use dedicated tools such as Caliper (--with-caliper), HPCToolkit, TAU, Intel VTune, NVIDIA Systems (for CUDA runs on NVIDIA GPUs) or ROCm Systems (for HIP runs on AMD GPUs) depending on your specific needs and platform.

[victorapm]

@jczhang07 is this resolved? Thank you

[jczhang07]

No. I don't have a good understanding of the problem (equations and meshes) on hand. Once I know more, I will give update. Thanks for the patience.