1*7fcac036SJeremy L Thompson // Copyright (c) 2017-2018, Lawrence Livermore National Security, LLC. 2*7fcac036SJeremy L Thompson // Produced at the Lawrence Livermore National Laboratory. LLNL-CODE-734707. 3*7fcac036SJeremy L Thompson // All Rights reserved. See files LICENSE and NOTICE for details. 4*7fcac036SJeremy L Thompson // 5*7fcac036SJeremy L Thompson // This file is part of CEED, a collection of benchmarks, miniapps, software 6*7fcac036SJeremy L Thompson // libraries and APIs for efficient high-order finite element and spectral 7*7fcac036SJeremy L Thompson // element discretizations for exascale applications. For more information and 8*7fcac036SJeremy L Thompson // source code availability see http://github.com/ceed. 9*7fcac036SJeremy L Thompson // 10*7fcac036SJeremy L Thompson // The CEED research is supported by the Exascale Computing Project 17-SC-20-SC, 11*7fcac036SJeremy L Thompson // a collaborative effort of two U.S. Department of Energy organizations (Office 12*7fcac036SJeremy L Thompson // of Science and the National Nuclear Security Administration) responsible for 13*7fcac036SJeremy L Thompson // the planning and preparation of a capable exascale ecosystem, including 14*7fcac036SJeremy L Thompson // software, applications, hardware, advanced system engineering and early 15*7fcac036SJeremy L Thompson // testbed platforms, in support of the nation's exascale computing imperative. 16*7fcac036SJeremy L Thompson 17*7fcac036SJeremy L Thompson #include <string.h> 18*7fcac036SJeremy L Thompson #include "ceed-cuda-common.h" 19*7fcac036SJeremy L Thompson 20*7fcac036SJeremy L Thompson //------------------------------------------------------------------------------ 21*7fcac036SJeremy L Thompson // Device information backend init 22*7fcac036SJeremy L Thompson //------------------------------------------------------------------------------ 23*7fcac036SJeremy L Thompson int CeedCudaInit(Ceed ceed, const char *resource, int nrc) { 24*7fcac036SJeremy L Thompson int ierr; 25*7fcac036SJeremy L Thompson const char *device_spec = strstr(resource, ":device_id="); 26*7fcac036SJeremy L Thompson const int deviceID = (device_spec) ? atoi(device_spec+11) : -1; 27*7fcac036SJeremy L Thompson 28*7fcac036SJeremy L Thompson int currentDeviceID; 29*7fcac036SJeremy L Thompson ierr = cudaGetDevice(¤tDeviceID); CeedChk_Cu(ceed,ierr); 30*7fcac036SJeremy L Thompson if (deviceID >= 0 && currentDeviceID != deviceID) { 31*7fcac036SJeremy L Thompson ierr = cudaSetDevice(deviceID); CeedChk_Cu(ceed,ierr); 32*7fcac036SJeremy L Thompson currentDeviceID = deviceID; 33*7fcac036SJeremy L Thompson } 34*7fcac036SJeremy L Thompson Ceed_Cuda *data; 35*7fcac036SJeremy L Thompson ierr = CeedGetData(ceed, &data); CeedChkBackend(ierr); 36*7fcac036SJeremy L Thompson data->deviceId = currentDeviceID; 37*7fcac036SJeremy L Thompson ierr = cudaGetDeviceProperties(&data->deviceProp, currentDeviceID); 38*7fcac036SJeremy L Thompson CeedChk_Cu(ceed,ierr); 39*7fcac036SJeremy L Thompson return CEED_ERROR_SUCCESS; 40*7fcac036SJeremy L Thompson } 41*7fcac036SJeremy L Thompson 42*7fcac036SJeremy L Thompson //------------------------------------------------------------------------------ 43*7fcac036SJeremy L Thompson // Backend destroy 44*7fcac036SJeremy L Thompson //------------------------------------------------------------------------------ 45*7fcac036SJeremy L Thompson int CeedDestroy_Cuda(Ceed ceed) { 46*7fcac036SJeremy L Thompson int ierr; 47*7fcac036SJeremy L Thompson Ceed_Cuda *data; 48*7fcac036SJeremy L Thompson ierr = CeedGetData(ceed, &data); CeedChkBackend(ierr); 49*7fcac036SJeremy L Thompson if (data->cublasHandle) { 50*7fcac036SJeremy L Thompson ierr = cublasDestroy(data->cublasHandle); CeedChk_Cublas(ceed, ierr); 51*7fcac036SJeremy L Thompson } 52*7fcac036SJeremy L Thompson ierr = CeedFree(&data); CeedChkBackend(ierr); 53*7fcac036SJeremy L Thompson return CEED_ERROR_SUCCESS; 54*7fcac036SJeremy L Thompson } 55*7fcac036SJeremy L Thompson 56*7fcac036SJeremy L Thompson //------------------------------------------------------------------------------ 57