1 /// @file 2 /// Test assembly of mass matrix operator diagonal 3 /// \test Test assembly of mass matrix operator diagonal 4 #include <ceed.h> 5 #include <math.h> 6 #include <stdlib.h> 7 8 #include "t510-operator.h" 9 10 int main(int argc, char **argv) { 11 Ceed ceed; 12 CeedElemRestriction elem_restr_x, elem_restr_u, elem_restr_qd_i; 13 CeedBasis basis_x, basis_u; 14 CeedQFunction qf_setup, qf_mass; 15 CeedOperator op_setup, op_mass; 16 CeedVector q_data, X, A, U, V; 17 CeedInt num_elem = 6, P = 3, Q = 4, dim = 2; 18 CeedInt nx = 3, ny = 2; 19 CeedInt num_dofs = (nx * 2 + 1) * (ny * 2 + 1), num_qpts = num_elem * Q * Q; 20 CeedInt ind_x[num_elem * P * P]; 21 CeedScalar x[dim * num_dofs], assembled_true[num_dofs]; 22 CeedScalar *u; 23 const CeedScalar *a, *v; 24 25 CeedInit(argv[1], &ceed); 26 27 // DoF Coordinates 28 for (CeedInt i = 0; i < nx * 2 + 1; i++) 29 for (CeedInt j = 0; j < ny * 2 + 1; j++) { 30 x[i + j * (nx * 2 + 1) + 0 * num_dofs] = (CeedScalar)i / (2 * nx); 31 x[i + j * (nx * 2 + 1) + 1 * num_dofs] = (CeedScalar)j / (2 * ny); 32 } 33 CeedVectorCreate(ceed, dim * num_dofs, &X); 34 CeedVectorSetArray(X, CEED_MEM_HOST, CEED_USE_POINTER, x); 35 36 // Qdata Vector 37 CeedVectorCreate(ceed, num_qpts, &q_data); 38 39 // Element Setup 40 for (CeedInt i = 0; i < num_elem; i++) { 41 CeedInt col, row, offset; 42 col = i % nx; 43 row = i / nx; 44 offset = col * (P - 1) + row * (nx * 2 + 1) * (P - 1); 45 for (CeedInt j = 0; j < P; j++) 46 for (CeedInt k = 0; k < P; k++) ind_x[P * (P * i + k) + j] = offset + k * (nx * 2 + 1) + j; 47 } 48 49 // Restrictions 50 CeedElemRestrictionCreate(ceed, num_elem, P * P, dim, num_dofs, dim * num_dofs, CEED_MEM_HOST, CEED_USE_POINTER, ind_x, &elem_restr_x); 51 52 CeedElemRestrictionCreate(ceed, num_elem, P * P, 1, 1, num_dofs, CEED_MEM_HOST, CEED_USE_POINTER, ind_x, &elem_restr_u); 53 CeedInt strides_qd[3] = {1, Q * Q, Q * Q}; 54 CeedElemRestrictionCreateStrided(ceed, num_elem, Q * Q, 1, num_qpts, strides_qd, &elem_restr_qd_i); 55 56 // Bases 57 CeedBasisCreateTensorH1Lagrange(ceed, dim, dim, P, Q, CEED_GAUSS, &basis_x); 58 CeedBasisCreateTensorH1Lagrange(ceed, dim, 1, P, Q, CEED_GAUSS, &basis_u); 59 60 // QFunctions 61 CeedQFunctionCreateInterior(ceed, 1, setup, setup_loc, &qf_setup); 62 CeedQFunctionAddInput(qf_setup, "weight", 1, CEED_EVAL_WEIGHT); 63 CeedQFunctionAddInput(qf_setup, "dx", dim * dim, CEED_EVAL_GRAD); 64 CeedQFunctionAddOutput(qf_setup, "rho", 1, CEED_EVAL_NONE); 65 66 CeedQFunctionCreateInterior(ceed, 1, mass, mass_loc, &qf_mass); 67 CeedQFunctionAddInput(qf_mass, "rho", 1, CEED_EVAL_NONE); 68 CeedQFunctionAddInput(qf_mass, "u", 1, CEED_EVAL_INTERP); 69 CeedQFunctionAddOutput(qf_mass, "v", 1, CEED_EVAL_INTERP); 70 71 // Operators 72 CeedOperatorCreate(ceed, qf_setup, CEED_QFUNCTION_NONE, CEED_QFUNCTION_NONE, &op_setup); 73 CeedOperatorSetField(op_setup, "weight", CEED_ELEMRESTRICTION_NONE, basis_x, CEED_VECTOR_NONE); 74 CeedOperatorSetField(op_setup, "dx", elem_restr_x, basis_x, CEED_VECTOR_ACTIVE); 75 CeedOperatorSetField(op_setup, "rho", elem_restr_qd_i, CEED_BASIS_COLLOCATED, CEED_VECTOR_ACTIVE); 76 77 CeedOperatorCreate(ceed, qf_mass, CEED_QFUNCTION_NONE, CEED_QFUNCTION_NONE, &op_mass); 78 CeedOperatorSetField(op_mass, "rho", elem_restr_qd_i, CEED_BASIS_COLLOCATED, q_data); 79 CeedOperatorSetField(op_mass, "u", elem_restr_u, basis_u, CEED_VECTOR_ACTIVE); 80 CeedOperatorSetField(op_mass, "v", elem_restr_u, basis_u, CEED_VECTOR_ACTIVE); 81 82 // Apply Setup Operator 83 CeedOperatorApply(op_setup, X, q_data, CEED_REQUEST_IMMEDIATE); 84 85 // Assemble diagonal 86 CeedVectorCreate(ceed, num_dofs, &A); 87 CeedOperatorLinearAssembleDiagonal(op_mass, A, CEED_REQUEST_IMMEDIATE); 88 89 // Manually assemble diagonal 90 CeedVectorCreate(ceed, num_dofs, &U); 91 CeedVectorSetValue(U, 0.0); 92 CeedVectorCreate(ceed, num_dofs, &V); 93 for (int i = 0; i < num_dofs; i++) { 94 // Set input 95 CeedVectorGetArray(U, CEED_MEM_HOST, &u); 96 u[i] = 1.0; 97 if (i) u[i - 1] = 0.0; 98 CeedVectorRestoreArray(U, &u); 99 100 // Compute diag entry for DoF i 101 CeedOperatorApply(op_mass, U, V, CEED_REQUEST_IMMEDIATE); 102 103 // Retrieve entry 104 CeedVectorGetArrayRead(V, CEED_MEM_HOST, &v); 105 assembled_true[i] = v[i]; 106 CeedVectorRestoreArrayRead(V, &v); 107 } 108 109 // Check output 110 CeedVectorGetArrayRead(A, CEED_MEM_HOST, &a); 111 for (int i = 0; i < num_dofs; i++) 112 if (fabs(a[i] - assembled_true[i]) > 100. * CEED_EPSILON) 113 // LCOV_EXCL_START 114 printf("[%" CeedInt_FMT "] Error in assembly: %f != %f\n", i, a[i], assembled_true[i]); 115 // LCOV_EXCL_STOP 116 CeedVectorRestoreArrayRead(A, &a); 117 118 // Cleanup 119 CeedQFunctionDestroy(&qf_setup); 120 CeedQFunctionDestroy(&qf_mass); 121 CeedOperatorDestroy(&op_setup); 122 CeedOperatorDestroy(&op_mass); 123 CeedElemRestrictionDestroy(&elem_restr_u); 124 CeedElemRestrictionDestroy(&elem_restr_x); 125 CeedElemRestrictionDestroy(&elem_restr_qd_i); 126 CeedBasisDestroy(&basis_u); 127 CeedBasisDestroy(&basis_x); 128 CeedVectorDestroy(&X); 129 CeedVectorDestroy(&A); 130 CeedVectorDestroy(&q_data); 131 CeedVectorDestroy(&U); 132 CeedVectorDestroy(&V); 133 CeedDestroy(&ceed); 134 return 0; 135 } 136