[petsc-dev] Mat assembly on GPUs ...

[Jed Brown]

We are interested in assembling point-block diagonals for use in
pbjacobi smoothing.  This is much simpler than AIJ, but lots of people
will need AIJ so it's certainly worthwhile.

Mark Adams <mfadams at lbl.gov> writes:

> Is there any plans/interest in assembling AIJ matrices on GPUs?
>
> I have a somewhat strangely balanced FE operator and I have each thread
> block create one element matrix, one thread per integration point with an
> expensive computation at each integration point. Then I assemble the
> matrices on the CPU.
>
> I want to parallelize assembly on GPU machines, with coloring or DD I
> assume. Does anyone else care about this?
>
> Thanks,
> Mark