1 // Copyright (c) 2017, Lawrence Livermore National Security, LLC. Produced at 2 // the Lawrence Livermore National Laboratory. LLNL-CODE-734707. All Rights 3 // reserved. See files LICENSE and NOTICE for details. 4 // 5 // This file is part of CEED, a collection of benchmarks, miniapps, software 6 // libraries and APIs for efficient high-order finite element and spectral 7 // element discretizations for exascale applications. For more information and 8 // source code availability see http://github.com/ceed. 9 // 10 // The CEED research is supported by the Exascale Computing Project 17-SC-20-SC, 11 // a collaborative effort of two U.S. Department of Energy organizations (Office 12 // of Science and the National Nuclear Security Administration) responsible for 13 // the planning and preparation of a capable exascale ecosystem, including 14 // software, applications, hardware, advanced system engineering and early 15 // testbed platforms, in support of the nation's exascale computing imperative. 16 17 #include <ceed-impl.h> 18 #include <ceed-backend.h> 19 20 /// @file 21 /// Implementation of backend CeedTensorContract interfaces 22 /// 23 /// @addtogroup CeedBasis 24 /// @{ 25 26 /** 27 @brief Create a CeedTensorContract object for a CeedBasis 28 29 @param ceed A Ceed object where the CeedTensorContract will be created 30 @param contract Address of the variable where the newly created 31 CeedTensorContract will be stored. 32 33 @return An error code: 0 - success, otherwise - failure 34 35 @ref Advanced 36 **/ 37 int CeedTensorContractCreate(Ceed ceed, CeedBasis basis, 38 CeedTensorContract *contract) { 39 int ierr; 40 41 if (!ceed->TensorContractCreate) { 42 Ceed delegate; 43 ierr = CeedGetDelegate(ceed, &delegate); CeedChk(ierr); 44 45 if (!delegate) 46 return CeedError(ceed, 1, 47 "Backend does not support TensorContractCreate"); 48 49 ierr = CeedTensorContractCreate(delegate, basis, contract); 50 CeedChk(ierr); 51 return 0; 52 } 53 54 ierr = CeedCalloc(1,contract); CeedChk(ierr); 55 56 (*contract)->ceed = ceed; 57 ceed->refcount++; 58 ierr = ceed->TensorContractCreate(basis, *contract); 59 CeedChk(ierr); 60 return 0; 61 }; 62 63 /** 64 @brief Apply tensor contraction 65 66 Contracts on the middle index 67 NOTRANSPOSE: v_ajc = t_jb u_abc 68 TRANSPOSE: v_ajc = t_bj u_abc 69 If add != 0, "=" is replaced by "+=" 70 71 @param contract CeedTensorContract to use 72 @param A First index of u, v 73 @param B Middle index of u, one index of t 74 @param C Last index of u, v 75 @param J Middle index of v, one index of t 76 @param[in] t Tensor array to contract against 77 @param tmode Transpose mode for t, \ref CEED_NOTRANSPOSE for t_jb 78 \ref CEED_TRANSPOSE for t_bj 79 @param add Add mode 80 @param[in] u Input array 81 @param[out] v Output array 82 83 @return An error code: 0 - success, otherwise - failure 84 85 @ref Advanced 86 **/ 87 int CeedTensorContractApply(CeedTensorContract contract, CeedInt A, CeedInt B, 88 CeedInt C, CeedInt J, const CeedScalar *restrict t, 89 CeedTransposeMode tmode, const CeedInt add, 90 const CeedScalar *restrict u, 91 CeedScalar *restrict v) { 92 int ierr; 93 94 ierr = contract->Apply(contract, A, B, C, J, t, tmode, add, u, v); 95 CeedChk(ierr); 96 return 0; 97 }; 98 99 /** 100 @brief Get Ceed associated with a CeedTensorContract 101 102 @param contract CeedTensorContract 103 @param[out] ceed Variable to store Ceed 104 105 @return An error code: 0 - success, otherwise - failure 106 107 @ref Advanced 108 **/ 109 int CeedTensorContractGetCeed(CeedTensorContract contract, Ceed *ceed) { 110 *ceed = contract->ceed; 111 112 return 0; 113 }; 114 115 /** 116 @brief Get backend data of a CeedTensorContract 117 118 @param contract CeedTensorContract 119 @param[out] data Variable to store data 120 121 @return An error code: 0 - success, otherwise - failure 122 123 @ref Advanced 124 **/ 125 int CeedTensorContractGetData(CeedTensorContract contract, void* *data) { 126 *data = contract->data; 127 return 0; 128 } 129 130 /** 131 @brief Set backend data of a CeedTensorContract 132 133 @param[out] contract CeedTensorContract 134 @param data Data to set 135 136 @return An error code: 0 - success, otherwise - failure 137 138 @ref Advanced 139 **/ 140 int CeedTensorContractSetData(CeedTensorContract contract, void* *data) { 141 contract->data = *data; 142 return 0; 143 } 144 145 /** 146 @brief Destroy a CeedTensorContract 147 148 @param contract CeedTensorContract to destroy 149 150 @return An error code: 0 - success, otherwise - failure 151 152 @ref Advanced 153 **/ 154 int CeedTensorContractDestroy(CeedTensorContract *contract) { 155 int ierr; 156 157 if (!*contract || --(*contract)->refcount > 0) return 0; 158 if ((*contract)->Destroy) { 159 ierr = (*contract)->Destroy(*contract); CeedChk(ierr); 160 } 161 ierr = CeedDestroy(&(*contract)->ceed); CeedChk(ierr); 162 ierr = CeedFree(contract); CeedChk(ierr); 163 return 0; 164 }; 165 166 /// @} 167