1 // Copyright (c) 2017-2018, Lawrence Livermore National Security, LLC. 2 // Produced at the Lawrence Livermore National Laboratory. LLNL-CODE-734707. 3 // All Rights 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/ceed.h> 18 #include <ceed/backend.h> 19 #include <string.h> 20 #include "ceed-cuda-gen.h" 21 #include "../cuda/ceed-cuda.h" 22 23 //------------------------------------------------------------------------------ 24 // Backend init 25 //------------------------------------------------------------------------------ 26 static int CeedInit_Cuda_gen(const char *resource, Ceed ceed) { 27 int ierr; 28 const int nrc = 9; // number of characters in resource 29 if (strncmp(resource, "/gpu/cuda/gen", nrc)) 30 // LCOV_EXCL_START 31 return CeedError(ceed, CEED_ERROR_BACKEND, 32 "Cuda backend cannot use resource: %s", resource); 33 // LCOV_EXCL_STOP 34 35 Ceed_Cuda *data; 36 ierr = CeedCalloc(1, &data); CeedChkBackend(ierr); 37 ierr = CeedSetData(ceed, data); CeedChkBackend(ierr); 38 ierr = CeedCudaInit(ceed, resource, nrc); CeedChkBackend(ierr); 39 40 Ceed ceedshared; 41 CeedInit("/gpu/cuda/shared", &ceedshared); 42 ierr = CeedSetDelegate(ceed, ceedshared); CeedChkBackend(ierr); 43 44 const char fallbackresource[] = "/gpu/cuda/ref"; 45 ierr = CeedSetOperatorFallbackResource(ceed, fallbackresource); 46 CeedChkBackend(ierr); 47 48 ierr = CeedSetBackendFunction(ceed, "Ceed", ceed, "QFunctionCreate", 49 CeedQFunctionCreate_Cuda_gen); CeedChkBackend(ierr); 50 ierr = CeedSetBackendFunction(ceed, "Ceed", ceed, "OperatorCreate", 51 CeedOperatorCreate_Cuda_gen); CeedChkBackend(ierr); 52 ierr = CeedSetBackendFunction(ceed, "Ceed", ceed, "Destroy", 53 CeedDestroy_Cuda); CeedChkBackend(ierr); 54 return CEED_ERROR_SUCCESS; 55 } 56 57 //------------------------------------------------------------------------------ 58 // Register backend 59 //------------------------------------------------------------------------------ 60 CEED_INTERN int CeedRegister_Cuda_Gen(void) { 61 return CeedRegister("/gpu/cuda/gen", CeedInit_Cuda_gen, 20); 62 } 63 //------------------------------------------------------------------------------ 64