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, CeedTensorContract *contract) { 38 int ierr; 39 40 if (!ceed->TensorContractCreate) { 41 Ceed delegate; 42 ierr = CeedGetDelegate(ceed, &delegate); CeedChk(ierr); 43 44 if (!delegate) 45 return CeedError(ceed, 1, 46 "Backend does not support TensorContractCreate"); 47 48 ierr = CeedTensorContractCreate(delegate, contract); 49 CeedChk(ierr); 50 return 0; 51 } 52 53 ierr = CeedCalloc(1,contract); CeedChk(ierr); 54 55 (*contract)->ceed = ceed; 56 ceed->refcount++; 57 ierr = ceed->TensorContractCreate(*contract); 58 CeedChk(ierr); 59 return 0; 60 }; 61 62 /** 63 @brief Apply tensor contraction 64 65 Contracts on the middle index 66 NOTRANSPOSE: v_ajc = t_jb u_abc 67 TRANSPOSE: v_ajc = t_bj u_abc 68 If add != 0, "=" is replaced by "+=" 69 70 @param contract CeedTensorContract to use 71 @param A First index of u, v 72 @param B Middle index of u, one index of t 73 @param C Last index of u, v 74 @param J Middle index of v, one index of t 75 @param[in] t Tensor array to contract against 76 @param tmode Transpose mode for t, \ref CEED_NOTRANSPOSE for t_jb 77 \ref CEED_TRANSPOSE for t_bj 78 @param add Add mode 79 @param[in] u Input array 80 @param[out] v Output array 81 82 @return An error code: 0 - success, otherwise - failure 83 84 @ref Advanced 85 **/ 86 int CeedTensorContractApply(CeedTensorContract contract, CeedInt A, CeedInt B, 87 CeedInt C, CeedInt J, const CeedScalar *restrict t, 88 CeedTransposeMode tmode, const CeedInt add, 89 const CeedScalar *restrict u, 90 CeedScalar *restrict v) { 91 int ierr; 92 93 ierr = contract->Apply(contract, A, B, C, J, t, tmode, add, u, v); 94 CeedChk(ierr); 95 return 0; 96 }; 97 98 /** 99 @brief Get Ceed associated with a CeedTensorContract 100 101 @param contract CeedTensorContract 102 @param[out] ceed Variable to store Ceed 103 104 @return An error code: 0 - success, otherwise - failure 105 106 @ref Advanced 107 **/ 108 int CeedTensorContractGetCeed(CeedTensorContract contract, Ceed *ceed) { 109 *ceed = contract->ceed; 110 111 return 0; 112 }; 113 114 /** 115 @brief Get backend data of a CeedTensorContract 116 117 @param contract CeedTensorContract 118 @param[out] data Variable to store data 119 120 @return An error code: 0 - success, otherwise - failure 121 122 @ref Advanced 123 **/ 124 int CeedTensorContractGetData(CeedTensorContract contract, void* *data) { 125 *data = contract->data; 126 return 0; 127 } 128 129 /** 130 @brief Set backend data of a CeedTensorContract 131 132 @param[out] contract CeedTensorContract 133 @param data Data to set 134 135 @return An error code: 0 - success, otherwise - failure 136 137 @ref Advanced 138 **/ 139 int CeedTensorContractSetData(CeedTensorContract contract, void* *data) { 140 contract->data = *data; 141 return 0; 142 } 143 144 /** 145 @brief Destroy a CeedTensorContract 146 147 @param contract CeedTensorContract to destroy 148 149 @return An error code: 0 - success, otherwise - failure 150 151 @ref Advanced 152 **/ 153 int CeedTensorContractDestroy(CeedTensorContract *contract) { 154 int ierr; 155 156 if (!*contract || --(*contract)->refcount > 0) return 0; 157 if ((*contract)->Destroy) { 158 ierr = (*contract)->Destroy(*contract); CeedChk(ierr); 159 } 160 ierr = CeedDestroy(&(*contract)->ceed); CeedChk(ierr); 161 ierr = CeedFree(contract); CeedChk(ierr); 162 return 0; 163 }; 164 165 /// @} 166