1 #include <petsc/private/deviceimpl.h> 2 #include <petscpkg_version.h> 3 #include <Kokkos_Core.hpp> 4 5 PetscBool PetscKokkosInitialized = PETSC_FALSE; 6 7 PetscErrorCode PetscKokkosFinalize_Private(void) 8 { 9 PetscFunctionBegin; 10 Kokkos::finalize(); 11 PetscFunctionReturn(PETSC_SUCCESS); 12 } 13 14 PetscErrorCode PetscKokkosIsInitialized_Private(PetscBool *isInitialized) 15 { 16 PetscFunctionBegin; 17 *isInitialized = Kokkos::is_initialized() ? PETSC_TRUE : PETSC_FALSE; 18 PetscFunctionReturn(PETSC_SUCCESS); 19 } 20 21 /* Initialize Kokkos if not yet */ 22 PetscErrorCode PetscKokkosInitializeCheck(void) 23 { 24 PetscFunctionBegin; 25 if (!Kokkos::is_initialized()) { 26 #if PETSC_PKG_KOKKOS_VERSION_GE(3, 6, 99) 27 auto args = Kokkos::InitializationSettings(); 28 #else 29 auto args = Kokkos::InitArguments{}; /* use default constructor */ 30 #endif 31 32 #if (defined(KOKKOS_ENABLE_CUDA) && PetscDefined(HAVE_CUDA)) || (defined(KOKKOS_ENABLE_HIP) && PetscDefined(HAVE_HIP)) || (defined(KOKKOS_ENABLE_SYCL) && PetscDefined(HAVE_SYCL)) 33 /* Kokkos does not support CUDA and HIP at the same time (but we do :)) */ 34 PetscDeviceContext dctx; 35 36 PetscCall(PetscDeviceContextGetCurrentContext(&dctx)); 37 #if PETSC_PKG_KOKKOS_VERSION_GE(3, 6, 99) 38 args.set_device_id(static_cast<int>(dctx->device->deviceId)); 39 #else 40 PetscCall(PetscMPIIntCast(dctx->device->deviceId, &args.device_id)); 41 #endif 42 #endif 43 44 #if PETSC_PKG_KOKKOS_VERSION_GE(3, 6, 99) 45 args.set_disable_warnings(!PetscDefined(HAVE_KOKKOS_INIT_WARNINGS)); 46 #else 47 args.disable_warnings = !PetscDefined(HAVE_KOKKOS_INIT_WARNINGS); 48 #endif 49 50 /* To use PetscNumOMPThreads, one has to configure petsc --with-openmp. 51 Otherwise, let's keep the default value (-1) of args.num_threads. 52 */ 53 #if defined(KOKKOS_ENABLE_OPENMP) && PetscDefined(HAVE_OPENMP) 54 #if PETSC_PKG_KOKKOS_VERSION_GE(3, 6, 99) 55 args.set_num_threads(PetscNumOMPThreads); 56 #else 57 args.num_threads = PetscNumOMPThreads; 58 #endif 59 #endif 60 61 Kokkos::initialize(args); 62 PetscBeganKokkos = PETSC_TRUE; 63 } 64 PetscKokkosInitialized = PETSC_TRUE; 65 PetscFunctionReturn(PETSC_SUCCESS); 66 } 67