1 /// @file
2 /// Test creation, action, and destruction for mass matrix operator at points using sequential composite operator
3 /// \test Test creation, action, and destruction for mass matrix operator at points using sequential composite operator
4 #include "t599-operator.h"
5
6 #include <ceed.h>
7 #include <math.h>
8 #include <stdio.h>
9
main(int argc,char ** argv)10 int main(int argc, char **argv) {
11 Ceed ceed;
12 CeedInt num_elem_1d = 3, num_elem = num_elem_1d * num_elem_1d, dim = 2, p = 3, q = 5;
13 CeedInt num_nodes = (num_elem_1d * (p - 1) + 1) * (num_elem_1d * (p - 1) + 1), num_points_per_elem = 4, num_points = num_elem * num_points_per_elem;
14 CeedVector x_points, u, v, u_points;
15 CeedElemRestriction elem_restriction_x_points, elem_restriction_u_points, elem_restriction_u;
16 CeedBasis basis_u;
17 CeedQFunction qf_to_points, qf_from_points;
18 CeedOperator op_to_points, op_from_points, op_mass;
19 bool is_at_points, is_sequential;
20
21 CeedInit(argv[1], &ceed);
22
23 CeedVectorCreate(ceed, dim * num_points, &x_points);
24 {
25 CeedScalar x_array[dim * num_points];
26
27 for (CeedInt e = 0; e < num_elem; e++) {
28 for (CeedInt d = 0; d < dim; d++) {
29 x_array[num_points_per_elem * (e * dim + d) + 0] = 0.25;
30 x_array[num_points_per_elem * (e * dim + d) + 1] = d == 0 ? -0.25 : 0.25;
31 x_array[num_points_per_elem * (e * dim + d) + 2] = d == 0 ? 0.25 : -0.25;
32 x_array[num_points_per_elem * (e * dim + d) + 3] = 0.25;
33 }
34 }
35 CeedVectorSetArray(x_points, CEED_MEM_HOST, CEED_COPY_VALUES, x_array);
36 }
37 {
38 CeedInt ind_x[num_elem + 1 + num_points];
39
40 for (CeedInt i = 0; i <= num_elem; i++) ind_x[i] = num_elem + 1 + i * num_points_per_elem;
41 for (CeedInt i = 0; i < num_points; i++) ind_x[num_elem + 1 + i] = i;
42 CeedElemRestrictionCreateAtPoints(ceed, num_elem, num_points, dim, num_points * dim, CEED_MEM_HOST, CEED_COPY_VALUES, ind_x,
43 &elem_restriction_x_points);
44 CeedElemRestrictionCreateAtPoints(ceed, num_elem, num_points, 1, num_points, CEED_MEM_HOST, CEED_COPY_VALUES, ind_x, &elem_restriction_u_points);
45 CeedElemRestrictionCreateVector(elem_restriction_u_points, &u_points, NULL);
46 CeedVectorSetValue(u_points, 0);
47 }
48
49 {
50 CeedInt ind_u[num_elem * p * p];
51
52 for (CeedInt e = 0; e < num_elem; e++) {
53 CeedInt elem_xy[2] = {1, 1}, n_d[2] = {0, 0};
54
55 for (CeedInt d = 0; d < dim; d++) n_d[d] = num_elem_1d * (p - 1) + 1;
56 {
57 CeedInt r_e = e;
58
59 for (CeedInt d = 0; d < dim; d++) {
60 elem_xy[d] = r_e % num_elem_1d;
61 r_e /= num_elem_1d;
62 }
63 }
64 CeedInt num_nodes_in_elem = p * p, *elem_nodes = ind_u + e * num_nodes_in_elem;
65
66 for (CeedInt n = 0; n < num_nodes_in_elem; n++) {
67 CeedInt g_node = 0, g_node_stride = 1, r_node = n;
68
69 for (CeedInt d = 0; d < dim; d++) {
70 g_node += (elem_xy[d] * (p - 1) + r_node % p) * g_node_stride;
71 g_node_stride *= n_d[d];
72 r_node /= p;
73 }
74 elem_nodes[n] = g_node;
75 }
76 }
77 CeedElemRestrictionCreate(ceed, num_elem, p * p, 1, 1, num_nodes, CEED_MEM_HOST, CEED_COPY_VALUES, ind_u, &elem_restriction_u);
78 }
79 CeedBasisCreateTensorH1Lagrange(ceed, dim, 1, p, q, CEED_GAUSS, &basis_u);
80
81 CeedQFunctionCreateInterior(ceed, 1, mass, mass_loc, &qf_to_points);
82 CeedQFunctionAddInput(qf_to_points, "u", 1, CEED_EVAL_INTERP);
83 CeedQFunctionAddOutput(qf_to_points, "u_points", 1, CEED_EVAL_NONE);
84
85 CeedOperatorCreateAtPoints(ceed, qf_to_points, CEED_QFUNCTION_NONE, CEED_QFUNCTION_NONE, &op_to_points);
86 CeedOperatorSetField(op_to_points, "u", elem_restriction_u, basis_u, CEED_VECTOR_ACTIVE);
87 CeedOperatorSetField(op_to_points, "u_points", elem_restriction_u_points, CEED_BASIS_NONE, u_points);
88 CeedOperatorAtPointsSetPoints(op_to_points, elem_restriction_x_points, x_points);
89
90 CeedOperatorIsAtPoints(op_to_points, &is_at_points);
91 if (!is_at_points) printf("Error: Operator should be at points\n");
92
93 CeedQFunctionCreateInterior(ceed, 1, mass, mass_loc, &qf_from_points);
94 CeedQFunctionAddInput(qf_from_points, "u_points", 1, CEED_EVAL_NONE);
95 CeedQFunctionAddOutput(qf_from_points, "v", 1, CEED_EVAL_INTERP);
96
97 CeedOperatorCreateAtPoints(ceed, qf_from_points, CEED_QFUNCTION_NONE, CEED_QFUNCTION_NONE, &op_from_points);
98 CeedOperatorSetField(op_from_points, "u_points", elem_restriction_u_points, CEED_BASIS_NONE, u_points);
99 CeedOperatorSetField(op_from_points, "v", elem_restriction_u, basis_u, CEED_VECTOR_ACTIVE);
100 CeedOperatorAtPointsSetPoints(op_from_points, elem_restriction_x_points, x_points);
101
102 CeedOperatorIsAtPoints(op_from_points, &is_at_points);
103 if (!is_at_points) printf("Error: Operator should be at points\n");
104
105 CeedOperatorCreateComposite(ceed, &op_mass);
106 CeedOperatorCompositeSetSequential(op_mass, true);
107 CeedOperatorCompositeAddSub(op_mass, op_to_points);
108 CeedOperatorCompositeAddSub(op_mass, op_from_points);
109
110 CeedVectorCreate(ceed, num_nodes, &u);
111 CeedVectorSetValue(u, 1.0);
112 CeedVectorCreate(ceed, num_nodes, &v);
113 CeedOperatorApply(op_mass, u, v, CEED_REQUEST_IMMEDIATE);
114
115 CeedOperatorCompositeIsSequential(op_mass, &is_sequential);
116 if (!is_sequential) printf("Error: Composite operator should be sequential\n");
117
118 {
119 CeedScalar sum = 0.0;
120 const CeedScalar *v_array;
121
122 CeedVectorGetArrayRead(v, CEED_MEM_HOST, &v_array);
123 for (CeedInt i = 0; i < num_nodes; i++) sum += v_array[i];
124 CeedVectorRestoreArrayRead(v, &v_array);
125 // Summing 9 reference elements, each 2x2 => 36 sq units area
126 if (fabs(sum - 4.0 * num_elem) > CEED_EPSILON * 5e3) {
127 printf("Incorrect area computed, %g != %g (abs error %g)\n", sum, 4.0 * num_elem, fabs(sum - 4.0 * num_elem));
128 }
129 }
130
131 CeedVectorDestroy(&x_points);
132 CeedVectorDestroy(&u_points);
133 CeedVectorDestroy(&u);
134 CeedVectorDestroy(&v);
135 CeedElemRestrictionDestroy(&elem_restriction_x_points);
136 CeedElemRestrictionDestroy(&elem_restriction_u_points);
137 CeedElemRestrictionDestroy(&elem_restriction_u);
138 CeedBasisDestroy(&basis_u);
139 CeedQFunctionDestroy(&qf_to_points);
140 CeedQFunctionDestroy(&qf_from_points);
141 CeedOperatorDestroy(&op_to_points);
142 CeedOperatorDestroy(&op_from_points);
143 CeedOperatorDestroy(&op_mass);
144 CeedDestroy(&ceed);
145 return 0;
146 }
147