xref: /libCEED/tests/t521-operator.c (revision ca94c3ddc8f82b7d93a79f9e4812e99b8be840ff)
1 /// @file
2 /// Test creation, action, and destruction for composite mass matrix operator
3 /// \test Test creation, action, and destruction for composite mass matrix operator
4 #include <ceed.h>
5 #include <math.h>
6 #include <stdio.h>
7 #include <stdlib.h>
8 
9 #include "t320-basis.h"
10 #include "t510-operator.h"
11 
12 /* The mesh comprises of two rows of 3 quadrilaterals followed by one row
13      of 6 triangles:
14    _ _ _
15   |_|_|_|
16   |_|_|_|
17   |/|/|/|
18 
19 */
20 
21 int main(int argc, char **argv) {
22   Ceed                ceed;
23   CeedElemRestriction elem_restriction_x_tet, elem_restriction_u_tet, elem_restriction_q_data_tet, elem_restriction_x_hex, elem_restriction_u_hex,
24       elem_restriction_q_data_hex;
25   CeedBasis     basis_x_tet, basis_u_tet, basis_x_hex, basis_u_hex;
26   CeedQFunction qf_setup_tet, qf_mass_tet, qf_setup_hex, qf_mass_hex;
27   CeedOperator  op_setup_tet, op_mass_tet, op_setup_hex, op_mass_hex, op_setup, op_mass;
28   CeedVector    q_data_tet, q_data_hex, x, u, v;
29   CeedInt       num_elem_tet = 6, p_tet = 6, q_tet = 4, num_elem_hex = 6, p_hex = 3, q_hex = 4, dim = 2;
30   CeedInt       n_x = 3, n_y = 3, n_x_tet = 3, n_y_tet = 1, n_x_hex = 3;
31   CeedInt       row, col, offset;
32   CeedInt       num_dofs = (n_x * 2 + 1) * (n_y * 2 + 1), num_qpts_tet = num_elem_tet * q_tet, num_qpts_hex = num_elem_hex * q_hex * q_hex;
33   CeedInt       ind_x_tet[num_elem_tet * p_tet], ind_x_hex[num_elem_hex * p_hex * p_hex];
34   CeedScalar    q_ref[dim * q_tet], q_weight[q_tet];
35   CeedScalar    interp[p_tet * q_tet], grad[dim * p_tet * q_tet];
36 
37   CeedInit(argv[1], &ceed);
38 
39   // Vectors
40   CeedVectorCreate(ceed, dim * num_dofs, &x);
41   {
42     CeedScalar x_array[dim * num_dofs];
43 
44     for (CeedInt i = 0; i < n_y * 2 + 1; i++) {
45       for (CeedInt j = 0; j < n_x * 2 + 1; j++) {
46         x_array[i + j * (n_y * 2 + 1) + 0 * num_dofs] = (CeedScalar)i / (2 * n_y);
47         x_array[i + j * (n_y * 2 + 1) + 1 * num_dofs] = (CeedScalar)j / (2 * n_x);
48       }
49     }
50     CeedVectorSetArray(x, CEED_MEM_HOST, CEED_COPY_VALUES, x_array);
51   }
52   CeedVectorCreate(ceed, num_dofs, &u);
53   CeedVectorCreate(ceed, num_dofs, &v);
54   CeedVectorCreate(ceed, num_qpts_tet, &q_data_tet);
55   CeedVectorCreate(ceed, num_qpts_hex, &q_data_hex);
56 
57   // Tet Elements
58   // -- Restrictions
59   for (CeedInt i = 0; i < num_elem_tet / 2; i++) {
60     col    = i % n_x_tet;
61     row    = i / n_x_tet;
62     offset = col * 2 + row * (n_x_tet * 2 + 1) * 2;
63 
64     ind_x_tet[i * 2 * p_tet + 0] = 2 + offset;
65     ind_x_tet[i * 2 * p_tet + 1] = 9 + offset;
66     ind_x_tet[i * 2 * p_tet + 2] = 16 + offset;
67     ind_x_tet[i * 2 * p_tet + 3] = 1 + offset;
68     ind_x_tet[i * 2 * p_tet + 4] = 8 + offset;
69     ind_x_tet[i * 2 * p_tet + 5] = 0 + offset;
70 
71     ind_x_tet[i * 2 * p_tet + 6]  = 14 + offset;
72     ind_x_tet[i * 2 * p_tet + 7]  = 7 + offset;
73     ind_x_tet[i * 2 * p_tet + 8]  = 0 + offset;
74     ind_x_tet[i * 2 * p_tet + 9]  = 15 + offset;
75     ind_x_tet[i * 2 * p_tet + 10] = 8 + offset;
76     ind_x_tet[i * 2 * p_tet + 11] = 16 + offset;
77   }
78   CeedElemRestrictionCreate(ceed, num_elem_tet, p_tet, dim, num_dofs, dim * num_dofs, CEED_MEM_HOST, CEED_USE_POINTER, ind_x_tet,
79                             &elem_restriction_x_tet);
80   CeedElemRestrictionCreate(ceed, num_elem_tet, p_tet, 1, 1, num_dofs, CEED_MEM_HOST, CEED_USE_POINTER, ind_x_tet, &elem_restriction_u_tet);
81 
82   CeedInt strides_q_data_tet[3] = {1, q_tet, q_tet};
83   CeedElemRestrictionCreateStrided(ceed, num_elem_tet, q_tet, 1, num_qpts_tet, strides_q_data_tet, &elem_restriction_q_data_tet);
84 
85   // -- Bases
86   Build2DSimplex(q_ref, q_weight, interp, grad);
87   CeedBasisCreateH1(ceed, CEED_TOPOLOGY_TRIANGLE, dim, p_tet, q_tet, interp, grad, q_ref, q_weight, &basis_x_tet);
88 
89   Build2DSimplex(q_ref, q_weight, interp, grad);
90   CeedBasisCreateH1(ceed, CEED_TOPOLOGY_TRIANGLE, 1, p_tet, q_tet, interp, grad, q_ref, q_weight, &basis_u_tet);
91 
92   // -- QFunctions
93   CeedQFunctionCreateInterior(ceed, 1, setup, setup_loc, &qf_setup_tet);
94   CeedQFunctionAddInput(qf_setup_tet, "weight", 1, CEED_EVAL_WEIGHT);
95   CeedQFunctionAddInput(qf_setup_tet, "dx", dim * dim, CEED_EVAL_GRAD);
96   CeedQFunctionAddOutput(qf_setup_tet, "rho", 1, CEED_EVAL_NONE);
97 
98   CeedQFunctionCreateInterior(ceed, 1, mass, mass_loc, &qf_mass_tet);
99   CeedQFunctionAddInput(qf_mass_tet, "rho", 1, CEED_EVAL_NONE);
100   CeedQFunctionAddInput(qf_mass_tet, "u", 1, CEED_EVAL_INTERP);
101   CeedQFunctionAddOutput(qf_mass_tet, "v", 1, CEED_EVAL_INTERP);
102 
103   // -- Operators
104   // ---- Setup Tet
105   CeedOperatorCreate(ceed, qf_setup_tet, CEED_QFUNCTION_NONE, CEED_QFUNCTION_NONE, &op_setup_tet);
106   CeedOperatorSetField(op_setup_tet, "weight", CEED_ELEMRESTRICTION_NONE, basis_x_tet, CEED_VECTOR_NONE);
107   CeedOperatorSetField(op_setup_tet, "dx", elem_restriction_x_tet, basis_x_tet, CEED_VECTOR_ACTIVE);
108   CeedOperatorSetField(op_setup_tet, "rho", elem_restriction_q_data_tet, CEED_BASIS_NONE, q_data_tet);
109   // ---- Mass Tet
110   CeedOperatorCreate(ceed, qf_mass_tet, CEED_QFUNCTION_NONE, CEED_QFUNCTION_NONE, &op_mass_tet);
111   CeedOperatorSetField(op_mass_tet, "rho", elem_restriction_q_data_tet, CEED_BASIS_NONE, q_data_tet);
112   CeedOperatorSetField(op_mass_tet, "u", elem_restriction_u_tet, basis_u_tet, CEED_VECTOR_ACTIVE);
113   CeedOperatorSetField(op_mass_tet, "v", elem_restriction_u_tet, basis_u_tet, CEED_VECTOR_ACTIVE);
114 
115   // Hex Elements
116   // -- Restrictions
117   for (CeedInt i = 0; i < num_elem_hex; i++) {
118     col    = i % n_x_hex;
119     row    = i / n_x_hex;
120     offset = (n_x_tet * 2 + 1) * (n_y_tet * 2) * (1 + row) + col * 2;
121     for (CeedInt j = 0; j < p_hex; j++) {
122       for (CeedInt k = 0; k < p_hex; k++) ind_x_hex[p_hex * (p_hex * i + k) + j] = offset + k * (n_x_hex * 2 + 1) + j;
123     }
124   }
125   CeedElemRestrictionCreate(ceed, num_elem_hex, p_hex * p_hex, dim, num_dofs, dim * num_dofs, CEED_MEM_HOST, CEED_USE_POINTER, ind_x_hex,
126                             &elem_restriction_x_hex);
127   CeedElemRestrictionCreate(ceed, num_elem_hex, p_hex * p_hex, 1, 1, num_dofs, CEED_MEM_HOST, CEED_USE_POINTER, ind_x_hex, &elem_restriction_u_hex);
128 
129   CeedInt strides_q_data_hex[3] = {1, q_hex * q_hex, q_hex * q_hex};
130   CeedElemRestrictionCreateStrided(ceed, num_elem_hex, q_hex * q_hex, 1, num_qpts_hex, strides_q_data_hex, &elem_restriction_q_data_hex);
131 
132   // -- Bases
133   CeedBasisCreateTensorH1Lagrange(ceed, dim, dim, p_hex, q_hex, CEED_GAUSS, &basis_x_hex);
134   CeedBasisCreateTensorH1Lagrange(ceed, dim, 1, p_hex, q_hex, CEED_GAUSS, &basis_u_hex);
135 
136   // -- QFunctions
137   CeedQFunctionCreateInterior(ceed, 1, setup, setup_loc, &qf_setup_hex);
138   CeedQFunctionAddInput(qf_setup_hex, "_weight", 1, CEED_EVAL_WEIGHT);
139   CeedQFunctionAddInput(qf_setup_hex, "dx", dim * dim, CEED_EVAL_GRAD);
140   CeedQFunctionAddOutput(qf_setup_hex, "rho", 1, CEED_EVAL_NONE);
141 
142   CeedQFunctionCreateInterior(ceed, 1, mass, mass_loc, &qf_mass_hex);
143   CeedQFunctionAddInput(qf_mass_hex, "rho", 1, CEED_EVAL_NONE);
144   CeedQFunctionAddInput(qf_mass_hex, "u", 1, CEED_EVAL_INTERP);
145   CeedQFunctionAddOutput(qf_mass_hex, "v", 1, CEED_EVAL_INTERP);
146 
147   // -- Operators
148   CeedOperatorCreate(ceed, qf_setup_hex, CEED_QFUNCTION_NONE, CEED_QFUNCTION_NONE, &op_setup_hex);
149   CeedOperatorSetField(op_setup_hex, "_weight", CEED_ELEMRESTRICTION_NONE, basis_x_hex, CEED_VECTOR_NONE);
150   CeedOperatorSetField(op_setup_hex, "dx", elem_restriction_x_hex, basis_x_hex, CEED_VECTOR_ACTIVE);
151   CeedOperatorSetField(op_setup_hex, "rho", elem_restriction_q_data_hex, CEED_BASIS_NONE, q_data_hex);
152 
153   CeedOperatorCreate(ceed, qf_mass_hex, CEED_QFUNCTION_NONE, CEED_QFUNCTION_NONE, &op_mass_hex);
154   CeedOperatorSetField(op_mass_hex, "rho", elem_restriction_q_data_hex, CEED_BASIS_NONE, q_data_hex);
155   CeedOperatorSetField(op_mass_hex, "u", elem_restriction_u_hex, basis_u_hex, CEED_VECTOR_ACTIVE);
156   CeedOperatorSetField(op_mass_hex, "v", elem_restriction_u_hex, basis_u_hex, CEED_VECTOR_ACTIVE);
157 
158   // Composite Operators
159   CeedCompositeOperatorCreate(ceed, &op_setup);
160   CeedCompositeOperatorAddSub(op_setup, op_setup_tet);
161   CeedCompositeOperatorAddSub(op_setup, op_setup_hex);
162 
163   CeedCompositeOperatorCreate(ceed, &op_mass);
164   CeedCompositeOperatorAddSub(op_mass, op_mass_tet);
165   CeedCompositeOperatorAddSub(op_mass, op_mass_hex);
166 
167   // Apply Setup Operator
168   CeedOperatorApply(op_setup, x, CEED_VECTOR_NONE, CEED_REQUEST_IMMEDIATE);
169 
170   // Apply Mass Operator
171   CeedVectorSetValue(u, 1.0);
172   CeedOperatorApply(op_mass, u, v, CEED_REQUEST_IMMEDIATE);
173 
174   // Check output
175   {
176     const CeedScalar *v_array;
177     CeedScalar        sum = 0.;
178 
179     CeedVectorGetArrayRead(v, CEED_MEM_HOST, &v_array);
180     for (CeedInt i = 0; i < num_dofs; i++) sum += v_array[i];
181     CeedVectorRestoreArrayRead(v, &v_array);
182     if (fabs(sum - 1.) > 1000. * CEED_EPSILON) printf("Computed Area: %f != True Area: 1.0\n", sum);
183   }
184 
185   // Cleanup
186   CeedVectorDestroy(&x);
187   CeedVectorDestroy(&u);
188   CeedVectorDestroy(&v);
189   CeedVectorDestroy(&q_data_tet);
190   CeedVectorDestroy(&q_data_hex);
191   CeedElemRestrictionDestroy(&elem_restriction_u_tet);
192   CeedElemRestrictionDestroy(&elem_restriction_x_tet);
193   CeedElemRestrictionDestroy(&elem_restriction_q_data_tet);
194   CeedElemRestrictionDestroy(&elem_restriction_u_hex);
195   CeedElemRestrictionDestroy(&elem_restriction_x_hex);
196   CeedElemRestrictionDestroy(&elem_restriction_q_data_hex);
197   CeedBasisDestroy(&basis_u_tet);
198   CeedBasisDestroy(&basis_x_tet);
199   CeedBasisDestroy(&basis_u_hex);
200   CeedBasisDestroy(&basis_x_hex);
201   CeedQFunctionDestroy(&qf_setup_tet);
202   CeedQFunctionDestroy(&qf_mass_tet);
203   CeedOperatorDestroy(&op_setup_tet);
204   CeedOperatorDestroy(&op_mass_tet);
205   CeedQFunctionDestroy(&qf_setup_hex);
206   CeedQFunctionDestroy(&qf_mass_hex);
207   CeedOperatorDestroy(&op_setup_hex);
208   CeedOperatorDestroy(&op_mass_hex);
209   CeedOperatorDestroy(&op_setup);
210   CeedOperatorDestroy(&op_mass);
211   CeedDestroy(&ceed);
212   return 0;
213 }
214