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 <string.h> 9 #include "ceed-cuda-common.h" 10 11 //------------------------------------------------------------------------------ 12 // Device information backend init 13 //------------------------------------------------------------------------------ 14 int CeedCudaInit(Ceed ceed, const char *resource) { 15 int ierr; 16 const char *device_spec = strstr(resource, ":device_id="); 17 const int device_id = (device_spec) ? atoi(device_spec + 11) : -1; 18 19 int current_device_id; 20 ierr = cudaGetDevice(¤t_device_id); CeedChk_Cu(ceed, ierr); 21 if (device_id >= 0 && current_device_id != device_id) { 22 ierr = cudaSetDevice(device_id); CeedChk_Cu(ceed, ierr); 23 current_device_id = device_id; 24 } 25 Ceed_Cuda *data; 26 ierr = CeedGetData(ceed, &data); CeedChkBackend(ierr); 27 data->device_id = current_device_id; 28 ierr = cudaGetDeviceProperties(&data->device_prop, current_device_id); 29 CeedChk_Cu(ceed, ierr); 30 return CEED_ERROR_SUCCESS; 31 } 32 33 //------------------------------------------------------------------------------ 34 // Backend destroy 35 //------------------------------------------------------------------------------ 36 int CeedDestroy_Cuda(Ceed ceed) { 37 int ierr; 38 Ceed_Cuda *data; 39 ierr = CeedGetData(ceed, &data); CeedChkBackend(ierr); 40 if (data->cublas_handle) { 41 ierr = cublasDestroy(data->cublas_handle); CeedChk_Cublas(ceed, ierr); 42 } 43 ierr = CeedFree(&data); CeedChkBackend(ierr); 44 return CEED_ERROR_SUCCESS; 45 } 46 47 //------------------------------------------------------------------------------ 48