xref: /libCEED/tests/t510-operator.c (revision 5754ecac3b7d1ff97b39b25dc78c06350f2c900d)
1 /// @file
2 /// Test creation, action, and destruction for mass matrix operator
3 /// \test Test creation, action, and destruction for mass matrix operator
4 #include <ceed.h>
5 #include <stdlib.h>
6 #include <math.h>
7 #include "t320-basis.h"
8 #include "t510-operator.h"
9 
10 int main(int argc, char **argv) {
11   Ceed ceed;
12   CeedElemRestriction elem_restr_x, elem_restr_u, elem_restr_qd_i;
13   CeedBasis basis_x, basis_u;
14   CeedQFunction qf_setup, qf_mass;
15   CeedOperator op_setup, op_mass;
16   CeedVector q_data, X, U, V;
17   const CeedScalar *hv;
18   CeedInt num_elem = 12, dim = 2, P = 6, Q = 4;
19   CeedInt nx = 3, ny = 2;
20   CeedInt row, col, offset;
21   CeedInt num_dofs = (nx*2+1)*(ny*2+1), num_qpts = num_elem*Q;
22   CeedInt ind_x[num_elem*P];
23   CeedScalar x[dim*num_dofs];
24   CeedScalar q_ref[dim*Q], q_weight[Q];
25   CeedScalar interp[P*Q], grad[dim*P*Q];
26 
27   CeedInit(argv[1], &ceed);
28 
29   for (CeedInt i=0; i<num_dofs; i++) {
30     x[i] = (1. / (nx*2)) * (CeedScalar) (i % (nx*2+1));
31     x[i+num_dofs] = (1. / (ny*2)) * (CeedScalar) (i / (nx*2+1));
32   }
33   for (CeedInt i=0; i<num_elem/2; i++) {
34     col = i % nx;
35     row = i / nx;
36     offset = col*2 + row*(nx*2+1)*2;
37 
38     ind_x[i*2*P +  0] =  2 + offset;
39     ind_x[i*2*P +  1] =  9 + offset;
40     ind_x[i*2*P +  2] = 16 + offset;
41     ind_x[i*2*P +  3] =  1 + offset;
42     ind_x[i*2*P +  4] =  8 + offset;
43     ind_x[i*2*P +  5] =  0 + offset;
44 
45     ind_x[i*2*P +  6] = 14 + offset;
46     ind_x[i*2*P +  7] =  7 + offset;
47     ind_x[i*2*P +  8] =  0 + offset;
48     ind_x[i*2*P +  9] = 15 + offset;
49     ind_x[i*2*P + 10] =  8 + offset;
50     ind_x[i*2*P + 11] = 16 + offset;
51   }
52 
53   // Restrictions
54   CeedElemRestrictionCreate(ceed, num_elem, P, dim, num_dofs, dim*num_dofs,
55                             CEED_MEM_HOST,
56                             CEED_USE_POINTER, ind_x, &elem_restr_x);
57 
58   CeedElemRestrictionCreate(ceed, num_elem, P, 1, 1, num_dofs, CEED_MEM_HOST,
59                             CEED_USE_POINTER, ind_x, &elem_restr_u);
60   CeedInt strides_qd[3] = {1, Q, Q};
61   CeedElemRestrictionCreateStrided(ceed, num_elem, Q, 1, num_qpts, strides_qd,
62                                    &elem_restr_qd_i);
63 
64   // Bases
65   buildmats(q_ref, q_weight, interp, grad);
66   CeedBasisCreateH1(ceed, CEED_TRIANGLE, dim, P, Q, interp, grad, q_ref,
67                     q_weight, &basis_x);
68 
69   buildmats(q_ref, q_weight, interp, grad);
70   CeedBasisCreateH1(ceed, CEED_TRIANGLE, 1, P, Q, interp, grad, q_ref,
71                     q_weight, &basis_u);
72 
73   // QFunctions
74   CeedQFunctionCreateInterior(ceed, 1, setup, setup_loc, &qf_setup);
75   CeedQFunctionAddInput(qf_setup, "_weight", 1, CEED_EVAL_WEIGHT);
76   CeedQFunctionAddInput(qf_setup, "dx", dim*dim, CEED_EVAL_GRAD);
77   CeedQFunctionAddOutput(qf_setup, "rho", 1, CEED_EVAL_NONE);
78 
79   CeedQFunctionCreateInterior(ceed, 1, mass, mass_loc, &qf_mass);
80   CeedQFunctionAddInput(qf_mass, "rho", 1, CEED_EVAL_NONE);
81   CeedQFunctionAddInput(qf_mass, "u", 1, CEED_EVAL_INTERP);
82   CeedQFunctionAddOutput(qf_mass, "v", 1, CEED_EVAL_INTERP);
83 
84   // Operators
85   CeedOperatorCreate(ceed, qf_setup, CEED_QFUNCTION_NONE, CEED_QFUNCTION_NONE,
86                      &op_setup);
87 
88   CeedOperatorCreate(ceed, qf_mass, CEED_QFUNCTION_NONE, CEED_QFUNCTION_NONE,
89                      &op_mass);
90 
91   CeedVectorCreate(ceed, dim*num_dofs, &X);
92   CeedVectorSetArray(X, CEED_MEM_HOST, CEED_USE_POINTER, x);
93   CeedVectorCreate(ceed, num_qpts, &q_data);
94 
95   CeedOperatorSetField(op_setup, "_weight", CEED_ELEMRESTRICTION_NONE, basis_x,
96                        CEED_VECTOR_NONE);
97   CeedOperatorSetField(op_setup, "dx", elem_restr_x, basis_x, CEED_VECTOR_ACTIVE);
98   CeedOperatorSetField(op_setup, "rho", elem_restr_qd_i, CEED_BASIS_COLLOCATED,
99                        CEED_VECTOR_ACTIVE);
100 
101   CeedOperatorSetField(op_mass, "rho", elem_restr_qd_i, CEED_BASIS_COLLOCATED,
102                        q_data);
103   CeedOperatorSetField(op_mass, "u", elem_restr_u, basis_u, CEED_VECTOR_ACTIVE);
104   CeedOperatorSetField(op_mass, "v", elem_restr_u, basis_u, CEED_VECTOR_ACTIVE);
105 
106   CeedOperatorApply(op_setup, X, q_data, CEED_REQUEST_IMMEDIATE);
107 
108   CeedVectorCreate(ceed, num_dofs, &U);
109   CeedVectorSetValue(U, 0.0);
110   CeedVectorCreate(ceed, num_dofs, &V);
111 
112   CeedOperatorApply(op_mass, U, V, CEED_REQUEST_IMMEDIATE);
113 
114   // Check output
115   CeedVectorGetArrayRead(V, CEED_MEM_HOST, &hv);
116   for (CeedInt i=0; i<num_dofs; i++)
117     if (fabs(hv[i]) > 1e-14) printf("[%d] v %g != 0.0\n",i, hv[i]);
118   CeedVectorRestoreArrayRead(V, &hv);
119 
120   CeedQFunctionDestroy(&qf_setup);
121   CeedQFunctionDestroy(&qf_mass);
122   CeedOperatorDestroy(&op_setup);
123   CeedOperatorDestroy(&op_mass);
124   CeedElemRestrictionDestroy(&elem_restr_u);
125   CeedElemRestrictionDestroy(&elem_restr_x);
126   CeedElemRestrictionDestroy(&elem_restr_qd_i);
127   CeedBasisDestroy(&basis_u);
128   CeedBasisDestroy(&basis_x);
129   CeedVectorDestroy(&X);
130   CeedVectorDestroy(&U);
131   CeedVectorDestroy(&V);
132   CeedVectorDestroy(&q_data);
133   CeedDestroy(&ceed);
134   return 0;
135 }
136