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
main(int argc,char ** argv)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 }
104 CeedVectorRestoreArrayRead(qf_assembled, &assembled_array);
105 CeedVectorRestoreArrayRead(q_data, &q_data_array);
106 }
107
108 // Apply original Mass Operator
109 CeedVectorSetValue(u, 1.0);
110 CeedOperatorApply(op_mass, u, v, CEED_REQUEST_IMMEDIATE);
111
112 // Check output
113 {
114 const CeedScalar *v_array;
115 CeedScalar area = 0.0;
116
117 CeedVectorGetArrayRead(v, CEED_MEM_HOST, &v_array);
118 for (CeedInt i = 0; i < num_dofs; i++) area += v_array[i];
119 if (fabs(area - 1.0) > 100. * CEED_EPSILON) printf("Error: True operator computed area = %f != 1.0\n", area);
120 CeedVectorRestoreArrayRead(v, &v_array);
121 }
122
123 // Switch to new q_data
124 {
125 const CeedScalar *assembled_array;
126
127 CeedVectorGetArrayRead(qf_assembled, CEED_MEM_HOST, &assembled_array);
128 CeedVectorSetArray(q_data, CEED_MEM_HOST, CEED_COPY_VALUES, (CeedScalar *)assembled_array);
129 CeedVectorRestoreArrayRead(qf_assembled, &assembled_array);
130 }
131
132 // Apply new Mass Operator
133 CeedOperatorApply(op_mass, u, v, CEED_REQUEST_IMMEDIATE);
134
135 // Check output
136 {
137 const CeedScalar *v_array;
138 CeedScalar area = 0.0;
139
140 CeedVectorGetArrayRead(v, CEED_MEM_HOST, &v_array);
141 for (CeedInt i = 0; i < num_dofs; i++) area += v_array[i];
142 CeedVectorRestoreArrayRead(v, &v_array);
143 if (fabs(area - 1.0) > 1000. * CEED_EPSILON) printf("Error: Linearized operator computed area = %f != 1.0\n", area);
144 }
145
146 // Cleanup
147 CeedVectorDestroy(&x);
148 CeedVectorDestroy(&qf_assembled);
149 CeedVectorDestroy(&q_data);
150 CeedVectorDestroy(&u);
151 CeedVectorDestroy(&v);
152 CeedElemRestrictionDestroy(&elem_restriction_u);
153 CeedElemRestrictionDestroy(&elem_restriction_x);
154 CeedElemRestrictionDestroy(&elem_restriction_q_data);
155 CeedElemRestrictionDestroy(&elem_restriction_assembled);
156 CeedBasisDestroy(&basis_u);
157 CeedBasisDestroy(&basis_x);
158 CeedQFunctionDestroy(&qf_setup);
159 CeedQFunctionDestroy(&qf_mass);
160 CeedOperatorDestroy(&op_setup);
161 CeedOperatorDestroy(&op_mass);
162 CeedDestroy(&ceed);
163 return 0;
164 }
165