1 // Copyright (c) 2017-2022, Lawrence Livermore National Security, LLC and other CEED contributors. 2 // All Rights Reserved. See the top-level LICENSE and NOTICE files for details. 3 // 4 // SPDX-License-Identifier: BSD-2-Clause 5 // 6 // This file is part of CEED: http://github.com/ceed 7 8 #include "ceed-cuda-common.h" 9 10 #include <ceed.h> 11 #include <ceed/backend.h> 12 #include <cuda_runtime.h> 13 #include <stdlib.h> 14 #include <string.h> 15 16 //------------------------------------------------------------------------------ 17 // Device information backend init 18 //------------------------------------------------------------------------------ 19 int CeedInit_Cuda(Ceed ceed, const char *resource) { 20 const char *device_spec = strstr(resource, ":device_id="); 21 const int device_id = (device_spec) ? atoi(device_spec + 11) : -1; 22 23 int current_device_id; 24 CeedCallCuda(ceed, cudaGetDevice(¤t_device_id)); 25 if (device_id >= 0 && current_device_id != device_id) { 26 CeedCallCuda(ceed, cudaSetDevice(device_id)); 27 current_device_id = device_id; 28 } 29 Ceed_Cuda *data; 30 CeedCallBackend(CeedGetData(ceed, &data)); 31 data->device_id = current_device_id; 32 CeedCallCuda(ceed, cudaGetDeviceProperties(&data->device_prop, current_device_id)); 33 return CEED_ERROR_SUCCESS; 34 } 35 36 //------------------------------------------------------------------------------ 37 // Backend destroy 38 //------------------------------------------------------------------------------ 39 int CeedDestroy_Cuda(Ceed ceed) { 40 Ceed_Cuda *data; 41 CeedCallBackend(CeedGetData(ceed, &data)); 42 if (data->cublas_handle) CeedCallCublas(ceed, cublasDestroy(data->cublas_handle)); 43 CeedCallBackend(CeedFree(&data)); 44 return CEED_ERROR_SUCCESS; 45 } 46 47 //------------------------------------------------------------------------------ 48