1: #include <petsc/private/petschypre.h>
  2: #include <Kokkos_Core.hpp>
  3: #include <../src/mat/impls/hypre/mhypre.h>

  5: PetscErrorCode MatZeroRows_Kokkos(PetscInt n, const PetscInt rows[], const HYPRE_Int i[], const HYPRE_Int j[], HYPRE_Complex a[], HYPRE_Complex diag)
  6: {
  7:   PetscFunctionBegin;
  8:   if (!n) PetscFunctionReturn(PETSC_SUCCESS);
  9:   PetscCall(PetscKokkosInitializeCheck()); // As we might have not created any petsc/kokkos object yet
 10:   Kokkos::parallel_for(
 11:     Kokkos::TeamPolicy<>(n, Kokkos::AUTO()), KOKKOS_LAMBDA(const Kokkos::TeamPolicy<>::member_type &t) {
 12:       PetscInt r = rows[t.league_rank()]; // row r
 13:       Kokkos::parallel_for(Kokkos::TeamThreadRange(t, i[r + 1] - i[r]), [&](PetscInt c) {
 14:         if (r == j[i[r] + c]) a[i[r] + c] = diag;
 15:         else a[i[r] + c] = 0.0;
 16:       });
 17:     });
 18:   PetscFunctionReturn(PETSC_SUCCESS);
 19: }