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 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