xref: /petsc/include/petscvec_kokkos.hpp (revision 5fedec97950c19de564efaecd0f125b1a6cb2b20)
1 #if !defined(PETSCVEC_KOKKOS_HPP)
2 #define PETSCVEC_KOKKOS_HPP
3 
4 #include <petscconf.h>
5 
6 #if defined(PETSC_HAVE_KOKKOS)
7   #if defined(petsccomplexlib)
8     #error "Error: You must include petscvec_kokkos.hpp before other petsc headers in this C++ file to use petsc complex with Kokkos"
9   #endif
10 
11   #define PETSC_DESIRE_KOKKOS_COMPLEX   1   /* To control the definition of petsccomplexlib in petscsystypes.h */
12 #endif
13 
14 #include <petscvec.h>
15 
16 #if defined(PETSC_HAVE_KOKKOS)
17   #include <Kokkos_Core.hpp>
18 
19   /* REMOVE ME (?) */
20   #if defined(PETSC_HAVE_CUDA)
21     #define WaitForKokkos() (Kokkos::fence(),0)
22   #elif defined(PETSC_HAVE_HIP)
23     #define WaitForKokkos() (Kokkos::fence(),0)
24   #else
25     #define WaitForKokkos() 0
26   #endif
27 
28   /* Routines to get/restore Kokkos Views from PETSc vectors */
29 
30   /* Like VecGetArrayRead() */
31   template<class MemorySpace> PetscErrorCode VecGetKokkosView    (Vec,Kokkos::View<const PetscScalar*,MemorySpace>*);
32   template<class MemorySpace> PetscErrorCode VecRestoreKokkosView(Vec,Kokkos::View<const PetscScalar*,MemorySpace>*){return 0;}
33 
34   /* Like VecGetArray() */
35   template<class MemorySpace> PetscErrorCode VecGetKokkosView    (Vec,Kokkos::View<PetscScalar*,MemorySpace>*);
36   template<class MemorySpace> PetscErrorCode VecRestoreKokkosView(Vec,Kokkos::View<PetscScalar*,MemorySpace>*);
37 
38   /* Like VecGetArrayWrite() */
39   template<class MemorySpace> PetscErrorCode VecGetKokkosViewWrite    (Vec,Kokkos::View<PetscScalar*,MemorySpace>*);
40   template<class MemorySpace> PetscErrorCode VecRestoreKokkosViewWrite(Vec,Kokkos::View<PetscScalar*,MemorySpace>*);
41 
42 #endif
43 
44 #endif
45