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-ref.h" 9 10 #include <ceed.h> 11 #include <ceed/backend.h> 12 #include <cublas_v2.h> 13 #include <stdbool.h> 14 #include <string.h> 15 16 #include "../cuda/ceed-cuda-common.h" 17 18 //------------------------------------------------------------------------------ 19 // CUDA preferred MemType 20 //------------------------------------------------------------------------------ 21 static int CeedGetPreferredMemType_Cuda(CeedMemType *mem_type) { 22 *mem_type = CEED_MEM_DEVICE; 23 return CEED_ERROR_SUCCESS; 24 } 25 26 //------------------------------------------------------------------------------ 27 // Get CUBLAS handle 28 //------------------------------------------------------------------------------ 29 int CeedCudaGetCublasHandle(Ceed ceed, cublasHandle_t *handle) { 30 Ceed_Cuda *data; 31 CeedCallBackend(CeedGetData(ceed, &data)); 32 33 if (!data->cublas_handle) CeedCallCublas(ceed, cublasCreate(&data->cublas_handle)); 34 *handle = data->cublas_handle; 35 return CEED_ERROR_SUCCESS; 36 } 37 38 //------------------------------------------------------------------------------ 39 // Backend Init 40 //------------------------------------------------------------------------------ 41 static int CeedInit_Cuda(const char *resource, Ceed ceed) { 42 char *resource_root; 43 CeedCallBackend(CeedCudaGetResourceRoot(ceed, resource, &resource_root)); 44 if (strcmp(resource_root, "/gpu/cuda/ref")) { 45 // LCOV_EXCL_START 46 return CeedError(ceed, CEED_ERROR_BACKEND, "Cuda backend cannot use resource: %s", resource); 47 // LCOV_EXCL_STOP 48 } 49 CeedCallBackend(CeedFree(&resource_root)); 50 CeedCallBackend(CeedSetDeterministic(ceed, true)); 51 52 Ceed_Cuda *data; 53 CeedCallBackend(CeedCalloc(1, &data)); 54 CeedCallBackend(CeedSetData(ceed, data)); 55 CeedCallBackend(CeedCudaInit(ceed, resource)); 56 57 CeedCallBackend(CeedSetBackendFunction(ceed, "Ceed", ceed, "GetPreferredMemType", CeedGetPreferredMemType_Cuda)); 58 CeedCallBackend(CeedSetBackendFunction(ceed, "Ceed", ceed, "VectorCreate", CeedVectorCreate_Cuda)); 59 CeedCallBackend(CeedSetBackendFunction(ceed, "Ceed", ceed, "BasisCreateTensorH1", CeedBasisCreateTensorH1_Cuda)); 60 CeedCallBackend(CeedSetBackendFunction(ceed, "Ceed", ceed, "BasisCreateH1", CeedBasisCreateH1_Cuda)); 61 CeedCallBackend(CeedSetBackendFunction(ceed, "Ceed", ceed, "ElemRestrictionCreate", CeedElemRestrictionCreate_Cuda)); 62 CeedCallBackend(CeedSetBackendFunction(ceed, "Ceed", ceed, "ElemRestrictionCreateBlocked", CeedElemRestrictionCreateBlocked_Cuda)); 63 CeedCallBackend(CeedSetBackendFunction(ceed, "Ceed", ceed, "QFunctionCreate", CeedQFunctionCreate_Cuda)); 64 CeedCallBackend(CeedSetBackendFunction(ceed, "Ceed", ceed, "QFunctionContextCreate", CeedQFunctionContextCreate_Cuda)); 65 CeedCallBackend(CeedSetBackendFunction(ceed, "Ceed", ceed, "OperatorCreate", CeedOperatorCreate_Cuda)); 66 CeedCallBackend(CeedSetBackendFunction(ceed, "Ceed", ceed, "Destroy", CeedDestroy_Cuda)); 67 return CEED_ERROR_SUCCESS; 68 } 69 70 //------------------------------------------------------------------------------ 71 // Backend Register 72 //------------------------------------------------------------------------------ 73 CEED_INTERN int CeedRegister_Cuda(void) { return CeedRegister("/gpu/cuda/ref", CeedInit_Cuda, 40); } 74 //------------------------------------------------------------------------------ 75