FYI, I've built Barry's updates on SUMMIT and tested it on SUMMITDEV. I
can't run on SUMMIT now. It has been merged in the master branch.
THis is how you run the cuda tests (in the PETSc root directory):
make -f gmakefile.test test globsearch="snes*tutorials*ex19*cuda*"
Mark
On Thu, Sep 20, 20
Brian,
I have finished making the (relatively few) changes needed to get PETSc's
GAMG to run on a combination of the CPU and GPU. Any of the AMG kernels that
has a CUDA backed is run automatically on the GPU while the kernels without a
CUDA backend are run on the CPU. In particular t
Hi Brian,
Your message to petsc-dev has prompted some ongoing discussion among the core
PETSc developers, and we'll hopefully be able to give you an outline of a
coherent plan to help you meet your ECP milestones soon.
We have had adding GPU support within PETSc's GAMG preconditioner on our lis
Hi Jed,
Good to hear from you! For the first cases where the geometry is not
moving the matrix stays fixed for many many solves and shipping it once to
the GPU makes perfect sense.
Mark has been helping us with our AMG parameter space. plain GAMG
aggregation has worked well for us (hence w
Brian, how frequently do you need to update the matrix (thus rebuild the
preconditioner)?
If it is infrequent, we could (in the near term) provide AMG setup on
CPU with solves on GPU.
What is your typical problem size per node to be run on Summit? What is
your MPI/OpenMP(?) decomposition?
Are t
So Baky and I have been at the Brookhaven GPU Hackathon now for three days,
talking to everyone. We have also been emailing with people who will
respond to us from the hypre team and the PETSc team, as well as reading
every blog post and mail archive and message board and from what we can
tell, a
