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 <string.h> 18 #include <stdarg.h> 19 #include "ceed-cuda-gen.h" 20 21 //------------------------------------------------------------------------------ 22 // Backend init 23 //------------------------------------------------------------------------------ 24 static int CeedInit_Cuda_gen(const char *resource, Ceed ceed) { 25 int ierr; 26 const int nrc = 9; // number of characters in resource 27 if (strncmp(resource, "/gpu/cuda/gen", nrc)) 28 // LCOV_EXCL_START 29 return CeedError(ceed, 1, "Cuda backend cannot use resource: %s", resource); 30 // LCOV_EXCL_STOP 31 32 Ceed ceedshared; 33 CeedInit("/gpu/cuda/shared", &ceedshared); 34 ierr = CeedSetDelegate(ceed, ceedshared); CeedChk(ierr); 35 36 Ceed_Cuda_gen *data; 37 ierr = CeedCalloc(1, &data); CeedChk(ierr); 38 ierr = CeedSetData(ceed, data); CeedChk(ierr); 39 ierr = CeedCudaInit(ceed, resource, nrc); CeedChk(ierr); 40 41 const char fallbackresource[] = "/gpu/cuda/ref"; 42 ierr = CeedSetOperatorFallbackResource(ceed, fallbackresource); CeedChk(ierr); 43 44 ierr = CeedSetBackendFunction(ceed, "Ceed", ceed, "QFunctionCreate", 45 CeedQFunctionCreate_Cuda_gen); CeedChk(ierr); 46 ierr = CeedSetBackendFunction(ceed, "Ceed", ceed, "OperatorCreate", 47 CeedOperatorCreate_Cuda_gen); CeedChk(ierr); 48 ierr = CeedSetBackendFunction(ceed, "Ceed", ceed, "Destroy", 49 CeedDestroy_Cuda); CeedChk(ierr); 50 return 0; 51 } 52 53 //------------------------------------------------------------------------------ 54 // Register backend 55 //------------------------------------------------------------------------------ 56 __attribute__((constructor)) 57 static void Register(void) { 58 CeedRegister("/gpu/cuda/gen", CeedInit_Cuda_gen, 20); 59 } 60 //------------------------------------------------------------------------------ 61