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 <stdlib.h> 7 8 #include "t510-operator.h" 9 10 int main(int argc, char **argv) { 11 Ceed ceed; 12 CeedElemRestriction elem_restriction_x, elem_restriction_u, elem_restriction_q_data, elem_restriction_assembled; 13 CeedBasis basis_x, basis_u; 14 CeedQFunction qf_setup, qf_mass; 15 CeedOperator op_setup, op_mass; 16 CeedVector q_data, x, qf_assembled, 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 22 CeedInit(argv[1], &ceed); 23 24 // Vectors 25 CeedVectorCreate(ceed, dim * num_dofs, &x); 26 { 27 CeedScalar x_array[dim * num_dofs]; 28 for (CeedInt i = 0; i < nx * 2 + 1; i++) { 29 for (CeedInt j = 0; j < ny * 2 + 1; j++) { 30 x_array[i + j * (nx * 2 + 1) + 0 * num_dofs] = (CeedScalar)i / (2 * nx); 31 x_array[i + j * (nx * 2 + 1) + 1 * num_dofs] = (CeedScalar)j / (2 * ny); 32 } 33 } 34 CeedVectorSetArray(x, CEED_MEM_HOST, CEED_COPY_VALUES, x_array); 35 } 36 CeedVectorCreate(ceed, num_dofs, &u); 37 CeedVectorCreate(ceed, num_dofs, &v); 38 CeedVectorCreate(ceed, num_qpts, &q_data); 39 40 // Restrictions 41 for (CeedInt i = 0; i < num_elem; i++) { 42 CeedInt col, row, offset; 43 col = i % nx; 44 row = i / nx; 45 offset = col * (p - 1) + row * (nx * 2 + 1) * (p - 1); 46 for (CeedInt j = 0; j < p; j++) { 47 for (CeedInt k = 0; k < p; k++) ind_x[p * (p * i + k) + j] = offset + k * (nx * 2 + 1) + j; 48 } 49 } 50 CeedElemRestrictionCreate(ceed, num_elem, p * p, dim, num_dofs, dim * num_dofs, CEED_MEM_HOST, CEED_USE_POINTER, ind_x, &elem_restriction_x); 51 CeedElemRestrictionCreate(ceed, num_elem, p * p, 1, 1, num_dofs, CEED_MEM_HOST, CEED_USE_POINTER, ind_x, &elem_restriction_u); 52 53 CeedInt strides_q_data[3] = {1, q * q, q * q}; 54 CeedElemRestrictionCreateStrided(ceed, num_elem, q * q, 1, num_qpts, strides_q_data, &elem_restriction_q_data); 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_restriction_x, basis_x, CEED_VECTOR_ACTIVE); 75 CeedOperatorSetField(op_setup, "rho", elem_restriction_q_data, 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_restriction_q_data, CEED_BASIS_COLLOCATED, q_data); 79 CeedOperatorSetField(op_mass, "u", elem_restriction_u, basis_u, CEED_VECTOR_ACTIVE); 80 CeedOperatorSetField(op_mass, "v", elem_restriction_u, basis_u, CEED_VECTOR_ACTIVE); 81 82 // Apply Setup Operator 83 CeedOperatorApply(op_setup, x, q_data, CEED_REQUEST_IMMEDIATE); 84 85 // Assemble QFunction 86 CeedOperatorSetQFunctionAssemblyReuse(op_mass, true); 87 CeedOperatorSetQFunctionAssemblyDataUpdateNeeded(op_mass, true); 88 CeedOperatorLinearAssembleQFunction(op_mass, &qf_assembled, &elem_restriction_assembled, CEED_REQUEST_IMMEDIATE); 89 // Second call will be no-op since SetQFunctionUpdated was not called 90 CeedOperatorSetQFunctionAssemblyDataUpdateNeeded(op_mass, false); 91 CeedOperatorLinearAssembleQFunction(op_mass, &qf_assembled, &elem_restriction_assembled, CEED_REQUEST_IMMEDIATE); 92 93 // Check output 94 { 95 const CeedScalar *assembled_array, *q_data_array; 96 97 CeedVectorGetArrayRead(qf_assembled, CEED_MEM_HOST, &assembled_array); 98 CeedVectorGetArrayRead(q_data, CEED_MEM_HOST, &q_data_array); 99 for (CeedInt i = 0; i < num_qpts; i++) 100 if (fabs(q_data_array[i] - assembled_array[i]) > 1e-9) { 101 // LCOV_EXCL_START 102 printf("Error: qf_assembled[%" CeedInt_FMT "] = %f != %f\n", i, assembled_array[i], q_data_array[i]); 103 // LCOV_EXCL_STOP 104 } 105 CeedVectorRestoreArrayRead(qf_assembled, &assembled_array); 106 CeedVectorRestoreArrayRead(q_data, &q_data_array); 107 } 108 109 // Apply original Mass Operator 110 CeedVectorSetValue(u, 1.0); 111 CeedOperatorApply(op_mass, u, v, CEED_REQUEST_IMMEDIATE); 112 113 // Check output 114 { 115 const CeedScalar *v_array; 116 CeedScalar area = 0.0; 117 118 CeedVectorGetArrayRead(v, CEED_MEM_HOST, &v_array); 119 for (CeedInt i = 0; i < num_dofs; i++) area += v_array[i]; 120 if (fabs(area - 1.0) > 100. * CEED_EPSILON) printf("Error: True operator computed area = %f != 1.0\n", area); 121 CeedVectorRestoreArrayRead(v, &v_array); 122 } 123 124 // Switch to new q_data 125 { 126 const CeedScalar *assembled_array; 127 128 CeedVectorGetArrayRead(qf_assembled, CEED_MEM_HOST, &assembled_array); 129 CeedVectorSetArray(q_data, CEED_MEM_HOST, CEED_COPY_VALUES, (CeedScalar *)assembled_array); 130 CeedVectorRestoreArrayRead(qf_assembled, &assembled_array); 131 } 132 133 // Apply new Mass Operator 134 CeedOperatorApply(op_mass, u, v, CEED_REQUEST_IMMEDIATE); 135 136 // Check output 137 { 138 const CeedScalar *v_array; 139 CeedScalar area = 0.0; 140 141 CeedVectorGetArrayRead(v, CEED_MEM_HOST, &v_array); 142 for (CeedInt i = 0; i < num_dofs; i++) area += v_array[i]; 143 CeedVectorRestoreArrayRead(v, &v_array); 144 if (fabs(area - 1.0) > 1000. * CEED_EPSILON) printf("Error: Linearized operator computed area = %f != 1.0\n", area); 145 } 146 147 // Cleanup 148 CeedVectorDestroy(&x); 149 CeedVectorDestroy(&qf_assembled); 150 CeedVectorDestroy(&q_data); 151 CeedVectorDestroy(&u); 152 CeedVectorDestroy(&v); 153 CeedElemRestrictionDestroy(&elem_restriction_u); 154 CeedElemRestrictionDestroy(&elem_restriction_x); 155 CeedElemRestrictionDestroy(&elem_restriction_q_data); 156 CeedElemRestrictionDestroy(&elem_restriction_assembled); 157 CeedBasisDestroy(&basis_u); 158 CeedBasisDestroy(&basis_x); 159 CeedQFunctionDestroy(&qf_setup); 160 CeedQFunctionDestroy(&qf_mass); 161 CeedOperatorDestroy(&op_setup); 162 CeedOperatorDestroy(&op_mass); 163 CeedDestroy(&ceed); 164 return 0; 165 } 166