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.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, 1, "Cuda backend cannot use resource: %s", resource); 32 // LCOV_EXCL_STOP 33 34 Ceed ceedshared; 35 CeedInit("/gpu/cuda/shared", &ceedshared); 36 ierr = CeedSetDelegate(ceed, ceedshared); CeedChk(ierr); 37 38 Ceed_Cuda_gen *data; 39 ierr = CeedCalloc(1, &data); CeedChk(ierr); 40 ierr = CeedSetData(ceed, data); CeedChk(ierr); 41 ierr = CeedCudaInit(ceed, resource, nrc); CeedChk(ierr); 42 43 const char fallbackresource[] = "/gpu/cuda/ref"; 44 ierr = CeedSetOperatorFallbackResource(ceed, fallbackresource); CeedChk(ierr); 45 46 ierr = CeedSetBackendFunction(ceed, "Ceed", ceed, "QFunctionCreate", 47 CeedQFunctionCreate_Cuda_gen); CeedChk(ierr); 48 ierr = CeedSetBackendFunction(ceed, "Ceed", ceed, "OperatorCreate", 49 CeedOperatorCreate_Cuda_gen); CeedChk(ierr); 50 ierr = CeedSetBackendFunction(ceed, "Ceed", ceed, "Destroy", 51 CeedDestroy_Cuda); CeedChk(ierr); 52 return 0; 53 } 54 55 //------------------------------------------------------------------------------ 56 // Register backend 57 //------------------------------------------------------------------------------ 58 CEED_INTERN int CeedRegister_Cuda_Gen(void) { 59 return CeedRegister("/gpu/cuda/gen", CeedInit_Cuda_gen, 20); 60 } 61 //------------------------------------------------------------------------------ 62