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 /// @file 18 /// libCEED QFunctions for mass operator example using PETSc 19 20 #ifndef bp2_h 21 #define bp2_h 22 23 #ifndef __CUDACC__ 24 # include <math.h> 25 #endif 26 27 // ***************************************************************************** 28 // This QFunction sets up the rhs and true solution for the problem 29 // ***************************************************************************** 30 31 // ----------------------------------------------------------------------------- 32 CEED_QFUNCTION(SetupMassRhs3)(void *ctx, const CeedInt Q, 33 const CeedScalar *const *in, 34 CeedScalar *const *out) { 35 const CeedScalar *x = in[0], *J = in[1], *w = in[2]; 36 CeedScalar *true_soln = out[0], *rhs = out[1]; 37 38 // Quadrature Point Loop 39 CeedPragmaSIMD 40 for (CeedInt i=0; i<Q; i++) { 41 const CeedScalar detJ = (J[i+Q*0]*(J[i+Q*4]*J[i+Q*8] - J[i+Q*5]*J[i+Q*7]) - 42 J[i+Q*1]*(J[i+Q*3]*J[i+Q*8] - J[i+Q*5]*J[i+Q*6]) + 43 J[i+Q*2]*(J[i+Q*3]*J[i+Q*7] - J[i+Q*4]*J[i+Q*6])); 44 45 // Component 1 46 true_soln[i+0*Q] = sqrt(x[i]*x[i] + x[i+Q]*x[i+Q] + x[i+2*Q]*x[i+2*Q]); 47 // Component 2 48 true_soln[i+1*Q] = 2 * true_soln[i+0*Q]; 49 // Component 3 50 true_soln[i+2*Q] = 3 * true_soln[i+0*Q]; 51 52 // Component 1 53 rhs[i+0*Q] = detJ * w[i] * true_soln[i+0*Q]; 54 // Component 2 55 rhs[i+1*Q] = 2 * rhs[i+0*Q]; 56 // Component 3 57 rhs[i+2*Q] = 3 * rhs[i+0*Q]; 58 } // End of Quadrature Point Loop 59 return 0; 60 } 61 62 // ***************************************************************************** 63 // This QFunction applies the mass operator for a vector field of 3 components. 64 // 65 // Inputs: 66 // u - Input vector at quadrature points 67 // qdata - Geometric factors 68 // 69 // Output: 70 // v - Output vector (test functions) at quadrature points 71 // 72 // ***************************************************************************** 73 74 // ----------------------------------------------------------------------------- 75 CEED_QFUNCTION(Mass3)(void *ctx, const CeedInt Q, 76 const CeedScalar *const *in, CeedScalar *const *out) { 77 const CeedScalar *u = in[0], *qdata = in[1]; 78 CeedScalar *v = out[0]; 79 80 // Quadrature Point Loop 81 CeedPragmaSIMD 82 for (CeedInt i=0; i<Q; i++) { 83 const CeedScalar r = qdata[i]; 84 // Component 1 85 v[i+0*Q] = r * u[i+0*Q]; 86 // Component 2 87 v[i+1*Q] = r * u[i+1*Q]; 88 // Component 3 89 v[i+2*Q] = r * u[i+2*Q]; 90 } // End of Quadrature Point Loop 91 return 0; 92 } 93 // ----------------------------------------------------------------------------- 94 95 #endif // bp2_h 96