[petsc-users] Regarding the status of VecSetValues(Blocked) for GPU vectors

[Barry Smith]

  We seem to be emphasizing using MatSetValuesCOO() for GPUs (can also be for CPUs); in the main branch you can find a simple example in src/mat/tutorials/ex18.c which demonstrates its use.

  Barry


> On Mar 17, 2022, at 4:46 PM, Sajid Ali Syed <sasyed at fnal.gov> wrote:
> 
> Hi PETSc-developers,
> 
> Is it possible to use VecSetValues with distributed-memory CUDA & Kokkos vectors from the device, i.e. can I call VecSetValues with GPU memory pointers and expect PETSc to figure out how to stash on the device it until I call VecAssemblyBegin (at which point PETSc could use GPU-aware MPI to populate off-process values) ?
> 
> If this is not currently supported, is supporting this on the roadmap? Thanks in advance!
> 
> Thank You,
> Sajid Ali (he/him) | Research Associate
> Scientific Computing Division
> Fermi National Accelerator Laboratory
> s-sajid-ali.github.io <http://s-sajid-ali.github.io/>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20220317/8c37a365/attachment.html>