13d8e8822SJeremy L Thompson // Copyright (c) 2017-2022, Lawrence Livermore National Security, LLC and other CEED contributors. 23d8e8822SJeremy L Thompson // All Rights Reserved. See the top-level LICENSE and NOTICE files for details. 37fcac036SJeremy L Thompson // 43d8e8822SJeremy L Thompson // SPDX-License-Identifier: BSD-2-Clause 57fcac036SJeremy L Thompson // 63d8e8822SJeremy L Thompson // This file is part of CEED: http://github.com/ceed 77fcac036SJeremy L Thompson 87fcac036SJeremy L Thompson #include "ceed-cuda-common.h" 97fcac036SJeremy L Thompson 1049aac155SJeremy L Thompson #include <ceed.h> 1149aac155SJeremy L Thompson #include <ceed/backend.h> 1249aac155SJeremy L Thompson #include <cuda_runtime.h> 1349aac155SJeremy L Thompson #include <stdlib.h> 142b730f8bSJeremy L Thompson #include <string.h> 152b730f8bSJeremy L Thompson 167fcac036SJeremy L Thompson //------------------------------------------------------------------------------ 177fcac036SJeremy L Thompson // Device information backend init 187fcac036SJeremy L Thompson //------------------------------------------------------------------------------ 19eb7e6cafSJeremy L Thompson int CeedInit_Cuda(Ceed ceed, const char *resource) { 20*ca735530SJeremy L Thompson Ceed_Cuda *data; 217fcac036SJeremy L Thompson const char *device_spec = strstr(resource, ":device_id="); 220d0321e0SJeremy L Thompson const int device_id = (device_spec) ? atoi(device_spec + 11) : -1; 230d0321e0SJeremy L Thompson int current_device_id; 24*ca735530SJeremy L Thompson 252b730f8bSJeremy L Thompson CeedCallCuda(ceed, cudaGetDevice(¤t_device_id)); 260d0321e0SJeremy L Thompson if (device_id >= 0 && current_device_id != device_id) { 272b730f8bSJeremy L Thompson CeedCallCuda(ceed, cudaSetDevice(device_id)); 280d0321e0SJeremy L Thompson current_device_id = device_id; 297fcac036SJeremy L Thompson } 30*ca735530SJeremy L Thompson 312b730f8bSJeremy L Thompson CeedCallBackend(CeedGetData(ceed, &data)); 320d0321e0SJeremy L Thompson data->device_id = current_device_id; 332b730f8bSJeremy L Thompson CeedCallCuda(ceed, cudaGetDeviceProperties(&data->device_prop, current_device_id)); 347fcac036SJeremy L Thompson return CEED_ERROR_SUCCESS; 357fcac036SJeremy L Thompson } 367fcac036SJeremy L Thompson 377fcac036SJeremy L Thompson //------------------------------------------------------------------------------ 387fcac036SJeremy L Thompson // Backend destroy 397fcac036SJeremy L Thompson //------------------------------------------------------------------------------ 407fcac036SJeremy L Thompson int CeedDestroy_Cuda(Ceed ceed) { 417fcac036SJeremy L Thompson Ceed_Cuda *data; 42*ca735530SJeremy L Thompson 432b730f8bSJeremy L Thompson CeedCallBackend(CeedGetData(ceed, &data)); 442b730f8bSJeremy L Thompson if (data->cublas_handle) CeedCallCublas(ceed, cublasDestroy(data->cublas_handle)); 452b730f8bSJeremy L Thompson CeedCallBackend(CeedFree(&data)); 467fcac036SJeremy L Thompson return CEED_ERROR_SUCCESS; 477fcac036SJeremy L Thompson } 487fcac036SJeremy L Thompson 497fcac036SJeremy L Thompson //------------------------------------------------------------------------------ 50