15aed82e4SJeremy L Thompson // Copyright (c) 2017-2024, 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. 32f86a920SJeremy L Thompson // 43d8e8822SJeremy L Thompson // SPDX-License-Identifier: BSD-2-Clause 52f86a920SJeremy L Thompson // 63d8e8822SJeremy L Thompson // This file is part of CEED: http://github.com/ceed 72f86a920SJeremy L Thompson 849aac155SJeremy L Thompson #include <ceed.h> 9ec3da8bcSJed Brown #include <ceed/backend.h> 102b730f8bSJeremy L Thompson 112f86a920SJeremy L Thompson #include "ceed-ref.h" 122f86a920SJeremy L Thompson 13f10650afSjeremylt //------------------------------------------------------------------------------ 14f10650afSjeremylt // Tensor Contract Apply 15f10650afSjeremylt //------------------------------------------------------------------------------ 162b730f8bSJeremy L Thompson static int CeedTensorContractApply_Ref(CeedTensorContract contract, CeedInt A, CeedInt B, CeedInt C, CeedInt J, const CeedScalar *restrict t, 172b730f8bSJeremy L Thompson CeedTransposeMode t_mode, const CeedInt add, const CeedScalar *restrict u, CeedScalar *restrict v) { 18d1d35e2fSjeremylt CeedInt t_stride_0 = B, t_stride_1 = 1; 19ad70ee2cSJeremy L Thompson 20d1d35e2fSjeremylt if (t_mode == CEED_TRANSPOSE) { 212b730f8bSJeremy L Thompson t_stride_0 = 1; 222b730f8bSJeremy L Thompson t_stride_1 = J; 232f86a920SJeremy L Thompson } 242f86a920SJeremy L Thompson 252b730f8bSJeremy L Thompson if (!add) { 262b730f8bSJeremy L Thompson for (CeedInt q = 0; q < A * J * C; q++) v[q] = (CeedScalar)0.0; 272b730f8bSJeremy L Thompson } 282f86a920SJeremy L Thompson 292b730f8bSJeremy L Thompson for (CeedInt a = 0; a < A; a++) { 302b730f8bSJeremy L Thompson for (CeedInt b = 0; b < B; b++) { 312f86a920SJeremy L Thompson for (CeedInt j = 0; j < J; j++) { 32d1d35e2fSjeremylt CeedScalar tq = t[j * t_stride_0 + b * t_stride_1]; 332b730f8bSJeremy L Thompson for (CeedInt c = 0; c < C; c++) v[(a * J + j) * C + c] += tq * u[(a * B + b) * C + c]; 342b730f8bSJeremy L Thompson } 352b730f8bSJeremy L Thompson } 362f86a920SJeremy L Thompson } 37e15f9bd0SJeremy L Thompson return CEED_ERROR_SUCCESS; 382f86a920SJeremy L Thompson } 392f86a920SJeremy L Thompson 40f10650afSjeremylt //------------------------------------------------------------------------------ 41f10650afSjeremylt // Tensor Contract Destroy 42f10650afSjeremylt //------------------------------------------------------------------------------ 432b730f8bSJeremy L Thompson static int CeedTensorContractDestroy_Ref(CeedTensorContract contract) { return CEED_ERROR_SUCCESS; } 442f86a920SJeremy L Thompson 45f10650afSjeremylt //------------------------------------------------------------------------------ 46f10650afSjeremylt // Tensor Contract Create 47f10650afSjeremylt //------------------------------------------------------------------------------ 48a71faab1SSebastian Grimberg int CeedTensorContractCreate_Ref(CeedTensorContract contract) { 492f86a920SJeremy L Thompson Ceed ceed; 502f86a920SJeremy L Thompson 51ad70ee2cSJeremy L Thompson CeedCallBackend(CeedTensorContractGetCeed(contract, &ceed)); 522b730f8bSJeremy L Thompson CeedCallBackend(CeedSetBackendFunction(ceed, "TensorContract", contract, "Apply", CeedTensorContractApply_Ref)); 532b730f8bSJeremy L Thompson CeedCallBackend(CeedSetBackendFunction(ceed, "TensorContract", contract, "Destroy", CeedTensorContractDestroy_Ref)); 54*9bc66399SJeremy L Thompson CeedCallBackend(CeedDestroy(&ceed)); 55e15f9bd0SJeremy L Thompson return CEED_ERROR_SUCCESS; 562f86a920SJeremy L Thompson } 572a86cc9dSSebastian Grimberg 58f10650afSjeremylt //------------------------------------------------------------------------------ 59