xref: /libCEED/tests/t510-operator.c (revision 4ec08b3aede85e944bebadf11512c57780813ef2)
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   CeedInterlaceMode imode = CEED_NONINTERLACED;
13   CeedElemRestriction Erestrictx, Erestrictu, Erestrictui;
14   CeedBasis bx, bu;
15   CeedQFunction qf_setup, qf_mass;
16   CeedOperator op_setup, op_mass;
17   CeedVector qdata, X, U, V;
18   const CeedScalar *hv;
19   CeedInt nelem = 12, dim = 2, P = 6, Q = 4;
20   CeedInt nx = 3, ny = 2;
21   CeedInt row, col, offset;
22   CeedInt Ndofs = (nx*2+1)*(ny*2+1), Nqpts = nelem*Q;
23   CeedInt indx[nelem*P];
24   CeedScalar x[dim*Ndofs];
25   CeedScalar qref[dim*Q], qweight[Q];
26   CeedScalar interp[P*Q], grad[dim*P*Q];
27 
28   CeedInit(argv[1], &ceed);
29 
30   for (CeedInt i=0; i<Ndofs; i++) {
31     x[i] = (1. / (nx*2)) * (CeedScalar) (i % (nx*2+1));
32     x[i+Ndofs] = (1. / (ny*2)) * (CeedScalar) (i / (nx*2+1));
33   }
34   for (CeedInt i=0; i<nelem/2; i++) {
35     col = i % nx;
36     row = i / nx;
37     offset = col*2 + row*(nx*2+1)*2;
38 
39     indx[i*2*P +  0] =  2 + offset;
40     indx[i*2*P +  1] =  9 + offset;
41     indx[i*2*P +  2] = 16 + offset;
42     indx[i*2*P +  3] =  1 + offset;
43     indx[i*2*P +  4] =  8 + offset;
44     indx[i*2*P +  5] =  0 + offset;
45 
46     indx[i*2*P +  6] = 14 + offset;
47     indx[i*2*P +  7] =  7 + offset;
48     indx[i*2*P +  8] =  0 + offset;
49     indx[i*2*P +  9] = 15 + offset;
50     indx[i*2*P + 10] =  8 + offset;
51     indx[i*2*P + 11] = 16 + offset;
52   }
53 
54   // Restrictions
55   CeedElemRestrictionCreate(ceed, imode, nelem, P, Ndofs, dim, CEED_MEM_HOST,
56                             CEED_USE_POINTER, indx, &Erestrictx);
57 
58   CeedElemRestrictionCreate(ceed, imode, nelem, P, Ndofs, 1, CEED_MEM_HOST,
59                             CEED_USE_POINTER, indx, &Erestrictu);
60   CeedInt stridesu[3] = {1, Q, Q};
61   CeedElemRestrictionCreateStrided(ceed, nelem, Q, Nqpts, 1, stridesu,
62                                    &Erestrictui);
63 
64 
65   // Bases
66   buildmats(qref, qweight, interp, grad);
67   CeedBasisCreateH1(ceed, CEED_TRIANGLE, dim, P, Q, interp, grad, qref,
68                     qweight, &bx);
69 
70   buildmats(qref, qweight, interp, grad);
71   CeedBasisCreateH1(ceed, CEED_TRIANGLE, 1, P, Q, interp, grad, qref,
72                     qweight, &bu);
73 
74   // QFunctions
75   CeedQFunctionCreateInterior(ceed, 1, setup, setup_loc, &qf_setup);
76   CeedQFunctionAddInput(qf_setup, "_weight", 1, CEED_EVAL_WEIGHT);
77   CeedQFunctionAddInput(qf_setup, "dx", dim*dim, CEED_EVAL_GRAD);
78   CeedQFunctionAddOutput(qf_setup, "rho", 1, CEED_EVAL_NONE);
79 
80   CeedQFunctionCreateInterior(ceed, 1, mass, mass_loc, &qf_mass);
81   CeedQFunctionAddInput(qf_mass, "rho", 1, CEED_EVAL_NONE);
82   CeedQFunctionAddInput(qf_mass, "u", 1, CEED_EVAL_INTERP);
83   CeedQFunctionAddOutput(qf_mass, "v", 1, CEED_EVAL_INTERP);
84 
85   // Operators
86   CeedOperatorCreate(ceed, qf_setup, CEED_QFUNCTION_NONE, CEED_QFUNCTION_NONE,
87                      &op_setup);
88 
89   CeedOperatorCreate(ceed, qf_mass, CEED_QFUNCTION_NONE, CEED_QFUNCTION_NONE,
90                      &op_mass);
91 
92   CeedVectorCreate(ceed, dim*Ndofs, &X);
93   CeedVectorSetArray(X, CEED_MEM_HOST, CEED_USE_POINTER, x);
94   CeedVectorCreate(ceed, Nqpts, &qdata);
95 
96   CeedOperatorSetField(op_setup, "_weight", CEED_ELEMRESTRICTION_NONE, bx,
97                        CEED_VECTOR_NONE);
98   CeedOperatorSetField(op_setup, "dx", Erestrictx, bx, CEED_VECTOR_ACTIVE);
99   CeedOperatorSetField(op_setup, "rho", Erestrictui, CEED_BASIS_COLLOCATED,
100                        CEED_VECTOR_ACTIVE);
101 
102   CeedOperatorSetField(op_mass, "rho", Erestrictui, CEED_BASIS_COLLOCATED,
103                        qdata);
104   CeedOperatorSetField(op_mass, "u", Erestrictu, bu, CEED_VECTOR_ACTIVE);
105   CeedOperatorSetField(op_mass, "v", Erestrictu, bu, CEED_VECTOR_ACTIVE);
106 
107   CeedOperatorApply(op_setup, X, qdata, CEED_REQUEST_IMMEDIATE);
108 
109   CeedVectorCreate(ceed, Ndofs, &U);
110   CeedVectorSetValue(U, 0.0);
111   CeedVectorCreate(ceed, Ndofs, &V);
112 
113   CeedOperatorApply(op_mass, U, V, CEED_REQUEST_IMMEDIATE);
114 
115   // Check output
116   CeedVectorGetArrayRead(V, CEED_MEM_HOST, &hv);
117   for (CeedInt i=0; i<Ndofs; i++)
118     if (fabs(hv[i]) > 1e-14) printf("[%d] v %g != 0.0\n",i, hv[i]);
119   CeedVectorRestoreArrayRead(V, &hv);
120 
121   CeedQFunctionDestroy(&qf_setup);
122   CeedQFunctionDestroy(&qf_mass);
123   CeedOperatorDestroy(&op_setup);
124   CeedOperatorDestroy(&op_mass);
125   CeedElemRestrictionDestroy(&Erestrictu);
126   CeedElemRestrictionDestroy(&Erestrictx);
127   CeedElemRestrictionDestroy(&Erestrictui);
128   CeedBasisDestroy(&bu);
129   CeedBasisDestroy(&bx);
130   CeedVectorDestroy(&X);
131   CeedVectorDestroy(&U);
132   CeedVectorDestroy(&V);
133   CeedVectorDestroy(&qdata);
134   CeedDestroy(&ceed);
135   return 0;
136 }
137