1 /// @file 2 /// Test assembly of mass matrix operator diagonal 3 /// \test Test assembly of mass matrix operator diagonal 4 #include <ceed.h> 5 #include <math.h> 6 #include <stdio.h> 7 #include <stdlib.h> 8 9 #include "t510-operator.h" 10 11 int main(int argc, char **argv) { 12 Ceed ceed; 13 CeedElemRestriction elem_restriction_x, elem_restriction_u, elem_restriction_q_data; 14 CeedBasis basis_x, basis_u; 15 CeedQFunction qf_setup, qf_mass; 16 CeedOperator op_setup, op_mass; 17 CeedVector q_data, x, assembled, u, v; 18 CeedInt num_elem = 6, p = 3, q = 4, dim = 2; 19 CeedInt nx = 3, ny = 2; 20 CeedInt num_dofs = (nx * 2 + 1) * (ny * 2 + 1), num_qpts = num_elem * q * q; 21 CeedInt ind_x[num_elem * p * p]; 22 CeedScalar assembled_true[num_dofs]; 23 24 CeedInit(argv[1], &ceed); 25 26 // Vectors 27 CeedVectorCreate(ceed, dim * num_dofs, &x); 28 { 29 CeedScalar x_array[dim * num_dofs]; 30 31 for (CeedInt i = 0; i < nx * 2 + 1; i++) { 32 for (CeedInt j = 0; j < ny * 2 + 1; j++) { 33 x_array[i + j * (nx * 2 + 1) + 0 * num_dofs] = (CeedScalar)i / (2 * nx); 34 x_array[i + j * (nx * 2 + 1) + 1 * num_dofs] = (CeedScalar)j / (2 * ny); 35 } 36 } 37 CeedVectorSetArray(x, CEED_MEM_HOST, CEED_COPY_VALUES, x_array); 38 } 39 CeedVectorCreate(ceed, num_dofs, &u); 40 CeedVectorCreate(ceed, num_dofs, &v); 41 CeedVectorCreate(ceed, num_qpts, &q_data); 42 43 // Restrictions 44 for (CeedInt i = 0; i < num_elem; i++) { 45 CeedInt col, row, offset; 46 col = i % nx; 47 row = i / nx; 48 offset = col * (p - 1) + row * (nx * 2 + 1) * (p - 1); 49 for (CeedInt j = 0; j < p; j++) { 50 for (CeedInt k = 0; k < p; k++) ind_x[p * (p * i + k) + j] = offset + k * (nx * 2 + 1) + j; 51 } 52 } 53 CeedElemRestrictionCreate(ceed, num_elem, p * p, dim, num_dofs, dim * num_dofs, CEED_MEM_HOST, CEED_USE_POINTER, ind_x, &elem_restriction_x); 54 CeedElemRestrictionCreate(ceed, num_elem, p * p, 1, 1, num_dofs, CEED_MEM_HOST, CEED_USE_POINTER, ind_x, &elem_restriction_u); 55 56 CeedInt strides_q_data[3] = {1, q * q, q * q}; 57 CeedElemRestrictionCreateStrided(ceed, num_elem, q * q, 1, num_qpts, strides_q_data, &elem_restriction_q_data); 58 59 // Bases 60 CeedBasisCreateTensorH1Lagrange(ceed, dim, dim, p, q, CEED_GAUSS, &basis_x); 61 CeedBasisCreateTensorH1Lagrange(ceed, dim, 1, p, q, CEED_GAUSS, &basis_u); 62 63 // QFunctions 64 CeedQFunctionCreateInterior(ceed, 1, setup, setup_loc, &qf_setup); 65 CeedQFunctionAddInput(qf_setup, "weight", 1, CEED_EVAL_WEIGHT); 66 CeedQFunctionAddInput(qf_setup, "dx", dim * dim, CEED_EVAL_GRAD); 67 CeedQFunctionAddOutput(qf_setup, "rho", 1, CEED_EVAL_NONE); 68 69 CeedQFunctionCreateInterior(ceed, 1, mass, mass_loc, &qf_mass); 70 CeedQFunctionAddInput(qf_mass, "rho", 1, CEED_EVAL_NONE); 71 CeedQFunctionAddInput(qf_mass, "u", 1, CEED_EVAL_INTERP); 72 CeedQFunctionAddOutput(qf_mass, "v", 1, CEED_EVAL_INTERP); 73 74 // Operators 75 CeedOperatorCreate(ceed, qf_setup, CEED_QFUNCTION_NONE, CEED_QFUNCTION_NONE, &op_setup); 76 CeedOperatorSetField(op_setup, "weight", CEED_ELEMRESTRICTION_NONE, basis_x, CEED_VECTOR_NONE); 77 CeedOperatorSetField(op_setup, "dx", elem_restriction_x, basis_x, CEED_VECTOR_ACTIVE); 78 CeedOperatorSetField(op_setup, "rho", elem_restriction_q_data, CEED_BASIS_NONE, CEED_VECTOR_ACTIVE); 79 80 CeedOperatorCreate(ceed, qf_mass, CEED_QFUNCTION_NONE, CEED_QFUNCTION_NONE, &op_mass); 81 CeedOperatorSetField(op_mass, "rho", elem_restriction_q_data, CEED_BASIS_NONE, q_data); 82 CeedOperatorSetField(op_mass, "u", elem_restriction_u, basis_u, CEED_VECTOR_ACTIVE); 83 CeedOperatorSetField(op_mass, "v", elem_restriction_u, basis_u, CEED_VECTOR_ACTIVE); 84 85 // Apply Setup Operator 86 CeedOperatorApply(op_setup, x, q_data, CEED_REQUEST_IMMEDIATE); 87 88 // Assemble diagonal 89 CeedVectorCreate(ceed, num_dofs, &assembled); 90 CeedOperatorLinearAssembleDiagonal(op_mass, assembled, CEED_REQUEST_IMMEDIATE); 91 92 // Manually assemble diagonal 93 CeedVectorSetValue(u, 0.0); 94 for (CeedInt i = 0; i < num_dofs; i++) { 95 CeedScalar *u_array; 96 const CeedScalar *v_array; 97 98 // Set input 99 CeedVectorGetArray(u, CEED_MEM_HOST, &u_array); 100 u_array[i] = 1.0; 101 if (i) u_array[i - 1] = 0.0; 102 CeedVectorRestoreArray(u, &u_array); 103 104 // Compute diag entry for DoF i 105 CeedOperatorApply(op_mass, u, v, CEED_REQUEST_IMMEDIATE); 106 107 // Retrieve entry 108 CeedVectorGetArrayRead(v, CEED_MEM_HOST, &v_array); 109 assembled_true[i] = v_array[i]; 110 CeedVectorRestoreArrayRead(v, &v_array); 111 } 112 113 // Check output 114 { 115 const CeedScalar *assembled_array; 116 117 CeedVectorGetArrayRead(assembled, CEED_MEM_HOST, &assembled_array); 118 for (CeedInt i = 0; i < num_dofs; i++) { 119 if (fabs(assembled_array[i] - assembled_true[i]) > 100. * CEED_EPSILON) { 120 // LCOV_EXCL_START 121 printf("[%" CeedInt_FMT "] Error in assembly: %f != %f\n", i, assembled_array[i], assembled_true[i]); 122 // LCOV_EXCL_STOP 123 } 124 } 125 CeedVectorRestoreArrayRead(assembled, &assembled_array); 126 } 127 128 // Cleanup 129 CeedVectorDestroy(&x); 130 CeedVectorDestroy(&assembled); 131 CeedVectorDestroy(&q_data); 132 CeedVectorDestroy(&u); 133 CeedVectorDestroy(&v); 134 CeedElemRestrictionDestroy(&elem_restriction_u); 135 CeedElemRestrictionDestroy(&elem_restriction_x); 136 CeedElemRestrictionDestroy(&elem_restriction_q_data); 137 CeedBasisDestroy(&basis_u); 138 CeedBasisDestroy(&basis_x); 139 CeedQFunctionDestroy(&qf_setup); 140 CeedQFunctionDestroy(&qf_mass); 141 CeedOperatorDestroy(&op_setup); 142 CeedOperatorDestroy(&op_mass); 143 CeedDestroy(&ceed); 144 return 0; 145 } 146