1 #include "hostdevice.hpp" 2 3 namespace Petsc 4 { 5 6 namespace device 7 { 8 9 namespace host 10 { 11 12 PetscErrorCode Device::initialize(MPI_Comm comm, PetscInt *defaultDeviceId, PetscBool *defaultView, PetscDeviceInitType *defaultInitType) noexcept 13 { 14 PetscFunctionBegin; 15 // the host is always id 0 16 *defaultDeviceId = 0; 17 // the host is always "lazily" initialized 18 *defaultInitType = PETSC_DEVICE_INIT_LAZY; 19 20 PetscOptionsBegin(comm, nullptr, "PetscDevice host Options", "Sys"); 21 PetscCall(base_type::PetscOptionDeviceView(PetscOptionsObject, defaultView, nullptr)); 22 PetscOptionsEnd(); 23 PetscFunctionReturn(PETSC_SUCCESS); 24 } 25 26 PetscErrorCode Device::get_attribute_(PetscInt, PetscDeviceAttribute attr, void *value) noexcept 27 { 28 PetscFunctionBegin; 29 switch (attr) { 30 case PETSC_DEVICE_ATTR_SIZE_T_SHARED_MEM_PER_BLOCK: 31 *static_cast<std::size_t *>(value) = 64000; 32 break; 33 default: 34 PetscUnreachable(); 35 } 36 PetscFunctionReturn(PETSC_SUCCESS); 37 } 38 39 } // namespace host 40 41 } // namespace device 42 43 } // namespace Petsc 44