xref: /libCEED/tests/t511-operator.c (revision 0436c2ad4dd95c9ccd89f5346568014600de10a7)
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 Erestrictx, Erestrictu, Erestrictxi, Erestrictui;
13   CeedBasis bx, bu;
14   CeedQFunction qf_setup, qf_mass;
15   CeedOperator op_setup, op_mass;
16   CeedVector qdata, X, U, V;
17   const CeedScalar *hv;
18   CeedInt nelem = 12, dim = 2, P = 6, Q = 4;
19   CeedInt nx = 3, ny = 2;
20   CeedInt row, col, offset;
21   CeedInt ndofs = (nx*2+1)*(ny*2+1), nqpts = nelem*Q;
22   CeedInt indx[nelem*P];
23   CeedScalar x[dim*ndofs];
24   CeedScalar qref[dim*Q], qweight[Q];
25   CeedScalar interp[P*Q], grad[dim*P*Q];
26   CeedScalar sum;
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, nelem, P, ndofs, dim, CEED_MEM_HOST,
56                             CEED_USE_POINTER, indx, &Erestrictx);
57   CeedElemRestrictionCreateIdentity(ceed, nelem, P, nelem*P, dim, &Erestrictxi);
58 
59   CeedElemRestrictionCreate(ceed, nelem, P, ndofs, 1, CEED_MEM_HOST,
60                             CEED_USE_POINTER, indx, &Erestrictu);
61   CeedElemRestrictionCreateIdentity(ceed, nelem, Q, nqpts, 1, &Erestrictui);
62 
63 
64   // Bases
65   buildmats(qref, qweight, interp, grad);
66   CeedBasisCreateH1(ceed, CEED_TRIANGLE, dim, P, Q, interp, grad, qref,
67                     qweight, &bx);
68 
69   buildmats(qref, qweight, interp, grad);
70   CeedBasisCreateH1(ceed, CEED_TRIANGLE, 1, P, Q, interp, grad, qref,
71                     qweight, &bu);
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, "x", 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*ndofs, &X);
92   CeedVectorSetArray(X, CEED_MEM_HOST, CEED_USE_POINTER, x);
93   CeedVectorCreate(ceed, nqpts, &qdata);
94 
95   CeedOperatorSetField(op_setup, "_weight", Erestrictxi, CEED_NOTRANSPOSE,
96                        bx, CEED_VECTOR_NONE);
97   CeedOperatorSetField(op_setup, "x", Erestrictx, CEED_NOTRANSPOSE,
98                        bx, CEED_VECTOR_ACTIVE);
99   CeedOperatorSetField(op_setup, "rho", Erestrictui, CEED_NOTRANSPOSE,
100                        CEED_BASIS_COLLOCATED, CEED_VECTOR_ACTIVE);
101 
102   CeedOperatorSetField(op_mass, "rho", Erestrictui, CEED_NOTRANSPOSE,
103                        CEED_BASIS_COLLOCATED, qdata);
104   CeedOperatorSetField(op_mass, "u", Erestrictu, CEED_NOTRANSPOSE,
105                        bu, CEED_VECTOR_ACTIVE);
106   CeedOperatorSetField(op_mass, "v", Erestrictu, CEED_NOTRANSPOSE,
107                        bu, CEED_VECTOR_ACTIVE);
108 
109   CeedOperatorApply(op_setup, X, qdata, CEED_REQUEST_IMMEDIATE);
110 
111   CeedVectorCreate(ceed, ndofs, &U);
112   CeedVectorSetValue(U, 1.0);
113   CeedVectorCreate(ceed, ndofs, &V);
114 
115   CeedOperatorApply(op_mass, U, V, CEED_REQUEST_IMMEDIATE);
116 
117   // Check output
118   CeedVectorGetArrayRead(V, CEED_MEM_HOST, &hv);
119   sum = 0.;
120   for (CeedInt i=0; i<ndofs; i++)
121     sum += hv[i];
122   if (fabs(sum-1.)>1e-10) printf("Computed Area: %f != True Area: 1.0\n", sum);
123   CeedVectorRestoreArrayRead(V, &hv);
124 
125   CeedQFunctionDestroy(&qf_setup);
126   CeedQFunctionDestroy(&qf_mass);
127   CeedOperatorDestroy(&op_setup);
128   CeedOperatorDestroy(&op_mass);
129   CeedElemRestrictionDestroy(&Erestrictu);
130   CeedElemRestrictionDestroy(&Erestrictx);
131   CeedElemRestrictionDestroy(&Erestrictui);
132   CeedElemRestrictionDestroy(&Erestrictxi);
133   CeedBasisDestroy(&bu);
134   CeedBasisDestroy(&bx);
135   CeedVectorDestroy(&X);
136   CeedVectorDestroy(&U);
137   CeedVectorDestroy(&V);
138   CeedVectorDestroy(&qdata);
139   CeedDestroy(&ceed);
140   return 0;
141 }
142