1 /// @file 2 /// Test assembly of mass matrix operator QFunction 3 /// \test Test assembly of mass matrix operator QFunction 4 #include <ceed.h> 5 #include <math.h> 6 #include <stdio.h> 7 #include <stdlib.h> 8 9 #include "t510-operator.h" 10 11 int main(int argc, char **argv) { 12 Ceed ceed; 13 CeedElemRestriction elem_restriction_x, elem_restriction_u, elem_restriction_q_data, elem_restriction_assembled; 14 CeedBasis basis_x, basis_u; 15 CeedQFunction qf_setup, qf_mass; 16 CeedOperator op_setup, op_mass; 17 CeedVector q_data, x, qf_assembled, u, v; 18 CeedInt num_elem = 6, p = 3, q = 4, dim = 2; 19 CeedInt nx = 3, ny = 2; 20 CeedInt num_dofs = (nx * 2 + 1) * (ny * 2 + 1), num_qpts = num_elem * q * q; 21 CeedInt ind_x[num_elem * p * p]; 22 23 CeedInit(argv[1], &ceed); 24 25 // Vectors 26 CeedVectorCreate(ceed, dim * num_dofs, &x); 27 { 28 CeedScalar x_array[dim * num_dofs]; 29 for (CeedInt i = 0; i < nx * 2 + 1; i++) { 30 for (CeedInt j = 0; j < ny * 2 + 1; j++) { 31 x_array[i + j * (nx * 2 + 1) + 0 * num_dofs] = (CeedScalar)i / (2 * nx); 32 x_array[i + j * (nx * 2 + 1) + 1 * num_dofs] = (CeedScalar)j / (2 * ny); 33 } 34 } 35 CeedVectorSetArray(x, CEED_MEM_HOST, CEED_COPY_VALUES, x_array); 36 } 37 CeedVectorCreate(ceed, num_dofs, &u); 38 CeedVectorCreate(ceed, num_dofs, &v); 39 CeedVectorCreate(ceed, num_qpts, &q_data); 40 41 // Restrictions 42 for (CeedInt i = 0; i < num_elem; i++) { 43 CeedInt col, row, offset; 44 col = i % nx; 45 row = i / nx; 46 offset = col * (p - 1) + row * (nx * 2 + 1) * (p - 1); 47 for (CeedInt j = 0; j < p; j++) { 48 for (CeedInt k = 0; k < p; k++) ind_x[p * (p * i + k) + j] = offset + k * (nx * 2 + 1) + j; 49 } 50 } 51 CeedElemRestrictionCreate(ceed, num_elem, p * p, dim, num_dofs, dim * num_dofs, CEED_MEM_HOST, CEED_USE_POINTER, ind_x, &elem_restriction_x); 52 CeedElemRestrictionCreate(ceed, num_elem, p * p, 1, 1, num_dofs, CEED_MEM_HOST, CEED_USE_POINTER, ind_x, &elem_restriction_u); 53 54 CeedInt strides_q_data[3] = {1, q * q, q * q}; 55 CeedElemRestrictionCreateStrided(ceed, num_elem, q * q, 1, num_qpts, strides_q_data, &elem_restriction_q_data); 56 57 // Bases 58 CeedBasisCreateTensorH1Lagrange(ceed, dim, dim, p, q, CEED_GAUSS, &basis_x); 59 CeedBasisCreateTensorH1Lagrange(ceed, dim, 1, p, q, CEED_GAUSS, &basis_u); 60 61 // QFunctions 62 CeedQFunctionCreateInterior(ceed, 1, setup, setup_loc, &qf_setup); 63 CeedQFunctionAddInput(qf_setup, "weight", 1, CEED_EVAL_WEIGHT); 64 CeedQFunctionAddInput(qf_setup, "dx", dim * dim, CEED_EVAL_GRAD); 65 CeedQFunctionAddOutput(qf_setup, "rho", 1, CEED_EVAL_NONE); 66 67 CeedQFunctionCreateInterior(ceed, 1, mass, mass_loc, &qf_mass); 68 CeedQFunctionAddInput(qf_mass, "rho", 1, CEED_EVAL_NONE); 69 CeedQFunctionAddInput(qf_mass, "u", 1, CEED_EVAL_INTERP); 70 CeedQFunctionAddOutput(qf_mass, "v", 1, CEED_EVAL_INTERP); 71 72 // Operators 73 CeedOperatorCreate(ceed, qf_setup, CEED_QFUNCTION_NONE, CEED_QFUNCTION_NONE, &op_setup); 74 CeedOperatorSetField(op_setup, "weight", CEED_ELEMRESTRICTION_NONE, basis_x, CEED_VECTOR_NONE); 75 CeedOperatorSetField(op_setup, "dx", elem_restriction_x, basis_x, CEED_VECTOR_ACTIVE); 76 CeedOperatorSetField(op_setup, "rho", elem_restriction_q_data, CEED_BASIS_NONE, CEED_VECTOR_ACTIVE); 77 78 CeedOperatorCreate(ceed, qf_mass, CEED_QFUNCTION_NONE, CEED_QFUNCTION_NONE, &op_mass); 79 CeedOperatorSetField(op_mass, "rho", elem_restriction_q_data, CEED_BASIS_NONE, q_data); 80 CeedOperatorSetField(op_mass, "u", elem_restriction_u, basis_u, CEED_VECTOR_ACTIVE); 81 CeedOperatorSetField(op_mass, "v", elem_restriction_u, basis_u, CEED_VECTOR_ACTIVE); 82 83 // Apply Setup Operator 84 CeedOperatorApply(op_setup, x, q_data, CEED_REQUEST_IMMEDIATE); 85 86 // Assemble QFunction 87 CeedOperatorSetQFunctionAssemblyReuse(op_mass, true); 88 CeedOperatorSetQFunctionAssemblyDataUpdateNeeded(op_mass, true); 89 CeedOperatorLinearAssembleQFunction(op_mass, &qf_assembled, &elem_restriction_assembled, CEED_REQUEST_IMMEDIATE); 90 91 // Check output 92 { 93 const CeedScalar *assembled_array, *q_data_array; 94 95 CeedVectorGetArrayRead(qf_assembled, CEED_MEM_HOST, &assembled_array); 96 CeedVectorGetArrayRead(q_data, CEED_MEM_HOST, &q_data_array); 97 for (CeedInt i = 0; i < num_qpts; i++) 98 if (fabs(q_data_array[i] - assembled_array[i]) > 1e-9) { 99 // LCOV_EXCL_START 100 printf("Error: qf_assembled[%" CeedInt_FMT "] = %f != %f\n", i, assembled_array[i], q_data_array[i]); 101 // LCOV_EXCL_STOP 102 } 103 CeedVectorRestoreArrayRead(qf_assembled, &assembled_array); 104 CeedVectorRestoreArrayRead(q_data, &q_data_array); 105 } 106 107 // Apply original Mass Operator 108 CeedVectorSetValue(u, 1.0); 109 CeedOperatorApply(op_mass, u, v, CEED_REQUEST_IMMEDIATE); 110 111 // Check output 112 { 113 const CeedScalar *v_array; 114 CeedScalar area = 0.0; 115 116 CeedVectorGetArrayRead(v, CEED_MEM_HOST, &v_array); 117 for (CeedInt i = 0; i < num_dofs; i++) area += v_array[i]; 118 if (fabs(area - 1.0) > 100. * CEED_EPSILON) printf("Error: True operator computed area = %f != 1.0\n", area); 119 CeedVectorRestoreArrayRead(v, &v_array); 120 } 121 122 // Switch to new q_data 123 { 124 const CeedScalar *assembled_array; 125 126 CeedVectorGetArrayRead(qf_assembled, CEED_MEM_HOST, &assembled_array); 127 CeedVectorSetArray(q_data, CEED_MEM_HOST, CEED_COPY_VALUES, (CeedScalar *)assembled_array); 128 CeedVectorRestoreArrayRead(qf_assembled, &assembled_array); 129 } 130 131 // Apply new Mass Operator 132 CeedOperatorApply(op_mass, u, v, CEED_REQUEST_IMMEDIATE); 133 134 // Check output 135 { 136 const CeedScalar *v_array; 137 CeedScalar area = 0.0; 138 139 CeedVectorGetArrayRead(v, CEED_MEM_HOST, &v_array); 140 for (CeedInt i = 0; i < num_dofs; i++) area += v_array[i]; 141 CeedVectorRestoreArrayRead(v, &v_array); 142 if (fabs(area - 1.0) > 1000. * CEED_EPSILON) printf("Error: Linearized operator computed area = %f != 1.0\n", area); 143 } 144 145 // Cleanup 146 CeedVectorDestroy(&x); 147 CeedVectorDestroy(&qf_assembled); 148 CeedVectorDestroy(&q_data); 149 CeedVectorDestroy(&u); 150 CeedVectorDestroy(&v); 151 CeedElemRestrictionDestroy(&elem_restriction_u); 152 CeedElemRestrictionDestroy(&elem_restriction_x); 153 CeedElemRestrictionDestroy(&elem_restriction_q_data); 154 CeedElemRestrictionDestroy(&elem_restriction_assembled); 155 CeedBasisDestroy(&basis_u); 156 CeedBasisDestroy(&basis_x); 157 CeedQFunctionDestroy(&qf_setup); 158 CeedQFunctionDestroy(&qf_mass); 159 CeedOperatorDestroy(&op_setup); 160 CeedOperatorDestroy(&op_mass); 161 CeedDestroy(&ceed); 162 return 0; 163 } 164