Reply To: Manipulating populations with postprocessors on GPU
I see, this is interesting!
An efficient general implementation will require custom MPI communication I think, executing parts on CPU won’t change the fundamental problem of the data not being available where it needs to be.
For an intermediary step: How large of a simulation domain / how many cells do you currently plan to use this on? If you can e.g. be sure that this will fit on a single node or even single GPU (which can fit a lot of cells nowadays) the implementation will be much simpler.