1 #include <stdio.h> 2 #include "../include/libceedsetup.h" 3 #include "../include/petscutils.h" 4 5 // ----------------------------------------------------------------------------- 6 // Destroy libCEED operator objects 7 // ----------------------------------------------------------------------------- 8 PetscErrorCode CeedDataDestroy(CeedInt i, CeedData data) { 9 int ierr; 10 11 PetscFunctionBeginUser; 12 CeedVectorDestroy(&data->q_data); 13 CeedVectorDestroy(&data->x_ceed); 14 CeedVectorDestroy(&data->y_ceed); 15 CeedBasisDestroy(&data->basis_x); 16 CeedBasisDestroy(&data->basis_u); 17 CeedElemRestrictionDestroy(&data->elem_restr_u); 18 CeedElemRestrictionDestroy(&data->elem_restr_x); 19 CeedElemRestrictionDestroy(&data->elem_restr_u_i); 20 CeedElemRestrictionDestroy(&data->elem_restr_qd_i); 21 CeedQFunctionDestroy(&data->qf_apply); 22 CeedOperatorDestroy(&data->op_apply); 23 if (i > 0) { 24 CeedOperatorDestroy(&data->op_prolong); 25 CeedOperatorDestroy(&data->op_restrict); 26 } 27 ierr = PetscFree(data); CHKERRQ(ierr); 28 29 PetscFunctionReturn(0); 30 }; 31 32 // ----------------------------------------------------------------------------- 33 // Set up libCEED for a given degree 34 // ----------------------------------------------------------------------------- 35 PetscErrorCode SetupLibceedByDegree(DM dm, Ceed ceed, CeedInt degree, 36 CeedInt topo_dim, CeedInt q_extra, 37 PetscInt num_comp_x, PetscInt num_comp_u, 38 PetscInt g_size, PetscInt xl_size, 39 BPData bp_data, CeedData data, 40 PetscBool setup_rhs, CeedVector rhs_ceed, 41 CeedVector *target) { 42 int ierr; 43 DM dm_coord; 44 Vec coords; 45 const PetscScalar *coord_array; 46 CeedBasis basis_x, basis_u; 47 CeedElemRestriction elem_restr_x, elem_restr_u, elem_restr_u_i, elem_restr_qd_i; 48 CeedQFunction qf_setup_geo, qf_apply; 49 CeedOperator op_setup_geo, op_apply; 50 CeedVector x_coord, q_data, x_ceed, y_ceed; 51 CeedInt num_qpts, c_start, c_end, num_elem, 52 q_data_size = bp_data.q_data_size; 53 CeedScalar R = 1, // radius of the sphere 54 l = 1.0/PetscSqrtReal(3.0); // half edge of the inscribed cube 55 56 PetscFunctionBeginUser; 57 ierr = DMGetCoordinateDM(dm, &dm_coord); CHKERRQ(ierr); 58 59 // CEED bases 60 ierr = CreateBasisFromPlex(ceed, dm_coord, 0, 0, 0, 0, bp_data, &basis_x); 61 CHKERRQ(ierr); 62 ierr = CreateBasisFromPlex(ceed, dm, 0, 0, 0, 0, bp_data, &basis_u); 63 CHKERRQ(ierr); 64 65 // CEED restrictions 66 ierr = CreateRestrictionFromPlex(ceed, dm_coord, 0, 0, 0, &elem_restr_x); 67 CHKERRQ(ierr); 68 ierr = CreateRestrictionFromPlex(ceed, dm, 0, 0, 0, &elem_restr_u); 69 CHKERRQ(ierr); 70 71 ierr = DMPlexGetHeightStratum(dm, 0, &c_start, &c_end); CHKERRQ(ierr); 72 num_elem = c_end - c_start; 73 CeedBasisGetNumQuadraturePoints(basis_u, &num_qpts); 74 75 CeedElemRestrictionCreateStrided(ceed, num_elem, num_qpts, num_comp_u, 76 num_comp_u*num_elem*num_qpts, 77 CEED_STRIDES_BACKEND, &elem_restr_u_i); 78 CeedElemRestrictionCreateStrided(ceed, num_elem, num_qpts, q_data_size, 79 q_data_size*num_elem*num_qpts, 80 CEED_STRIDES_BACKEND, &elem_restr_qd_i); 81 82 // Element coordinates 83 ierr = DMGetCoordinatesLocal(dm, &coords); CHKERRQ(ierr); 84 ierr = VecGetArrayRead(coords, &coord_array); CHKERRQ(ierr); 85 86 CeedElemRestrictionCreateVector(elem_restr_x, &x_coord, NULL); 87 CeedVectorSetArray(x_coord, CEED_MEM_HOST, CEED_COPY_VALUES, 88 (PetscScalar *)coord_array); 89 ierr = VecRestoreArrayRead(coords, &coord_array); 90 91 // Create the persistent vectors that will be needed in setup and apply 92 CeedVectorCreate(ceed, q_data_size*num_elem*num_qpts, &q_data); 93 CeedVectorCreate(ceed, xl_size, &x_ceed); 94 CeedVectorCreate(ceed, xl_size, &y_ceed); 95 96 // Create the QFunction that builds the context data 97 CeedQFunctionCreateInterior(ceed, 1, bp_data.setup_geo, bp_data.setup_geo_loc, 98 &qf_setup_geo); 99 CeedQFunctionAddInput(qf_setup_geo, "x", num_comp_x, CEED_EVAL_INTERP); 100 CeedQFunctionAddInput(qf_setup_geo, "dx", num_comp_x*topo_dim, CEED_EVAL_GRAD); 101 CeedQFunctionAddInput(qf_setup_geo, "weight", 1, CEED_EVAL_WEIGHT); 102 CeedQFunctionAddOutput(qf_setup_geo, "qdata", q_data_size, CEED_EVAL_NONE); 103 104 // Create the operator that builds the quadrature data 105 CeedOperatorCreate(ceed, qf_setup_geo, NULL, NULL, &op_setup_geo); 106 CeedOperatorSetField(op_setup_geo, "x", elem_restr_x, basis_x, 107 CEED_VECTOR_ACTIVE); 108 CeedOperatorSetField(op_setup_geo, "dx", elem_restr_x, basis_x, 109 CEED_VECTOR_ACTIVE); 110 CeedOperatorSetField(op_setup_geo, "weight", CEED_ELEMRESTRICTION_NONE, basis_x, 111 CEED_VECTOR_NONE); 112 CeedOperatorSetField(op_setup_geo, "qdata", elem_restr_qd_i, 113 CEED_BASIS_COLLOCATED, CEED_VECTOR_ACTIVE); 114 115 // Setup q_data 116 CeedOperatorApply(op_setup_geo, x_coord, q_data, CEED_REQUEST_IMMEDIATE); 117 118 // Set up PDE operator 119 CeedInt in_scale = bp_data.in_mode == CEED_EVAL_GRAD ? topo_dim : 1; 120 CeedInt out_scale = bp_data.out_mode == CEED_EVAL_GRAD ? topo_dim : 1; 121 CeedQFunctionCreateInterior(ceed, 1, bp_data.apply, bp_data.apply_loc, 122 &qf_apply); 123 CeedQFunctionAddInput(qf_apply, "u", num_comp_u*in_scale, bp_data.in_mode); 124 CeedQFunctionAddInput(qf_apply, "qdata", q_data_size, CEED_EVAL_NONE); 125 CeedQFunctionAddOutput(qf_apply, "v", num_comp_u*out_scale, bp_data.out_mode); 126 127 // Create the mass or diff operator 128 CeedOperatorCreate(ceed, qf_apply, NULL, NULL, &op_apply); 129 CeedOperatorSetField(op_apply, "u", elem_restr_u, basis_u, CEED_VECTOR_ACTIVE); 130 CeedOperatorSetField(op_apply, "qdata", elem_restr_qd_i, CEED_BASIS_COLLOCATED, 131 q_data); 132 CeedOperatorSetField(op_apply, "v", elem_restr_u, basis_u, CEED_VECTOR_ACTIVE); 133 134 // Set up RHS if needed 135 if (setup_rhs) { 136 CeedQFunction qf_setup_rhs; 137 CeedOperator op_setup_rhs; 138 CeedVectorCreate(ceed, num_elem*num_qpts*num_comp_u, target); 139 // Create the q-function that sets up the RHS and true solution 140 CeedQFunctionCreateInterior(ceed, 1, bp_data.setup_rhs, bp_data.setup_rhs_loc, 141 &qf_setup_rhs); 142 CeedQFunctionAddInput(qf_setup_rhs, "x", num_comp_x, CEED_EVAL_INTERP); 143 CeedQFunctionAddInput(qf_setup_rhs, "qdata", q_data_size, CEED_EVAL_NONE); 144 CeedQFunctionAddOutput(qf_setup_rhs, "true solution", num_comp_u, 145 CEED_EVAL_NONE); 146 CeedQFunctionAddOutput(qf_setup_rhs, "rhs", num_comp_u, CEED_EVAL_INTERP); 147 148 // Create the operator that builds the RHS and true solution 149 CeedOperatorCreate(ceed, qf_setup_rhs, NULL, NULL, &op_setup_rhs); 150 CeedOperatorSetField(op_setup_rhs, "x", elem_restr_x, basis_x, 151 CEED_VECTOR_ACTIVE); 152 CeedOperatorSetField(op_setup_rhs, "qdata", elem_restr_qd_i, 153 CEED_BASIS_COLLOCATED, q_data); 154 CeedOperatorSetField(op_setup_rhs, "true solution", elem_restr_u_i, 155 CEED_BASIS_COLLOCATED, *target); 156 CeedOperatorSetField(op_setup_rhs, "rhs", elem_restr_u, basis_u, 157 CEED_VECTOR_ACTIVE); 158 159 // Set up the libCEED context 160 CeedQFunctionContext ctx_rhs_setup; 161 CeedQFunctionContextCreate(ceed, &ctx_rhs_setup); 162 CeedScalar rhs_setup_data[2] = {R, l}; 163 CeedQFunctionContextSetData(ctx_rhs_setup, CEED_MEM_HOST, CEED_COPY_VALUES, 164 sizeof rhs_setup_data, &rhs_setup_data); 165 CeedQFunctionSetContext(qf_setup_rhs, ctx_rhs_setup); 166 CeedQFunctionContextDestroy(&ctx_rhs_setup); 167 168 // Setup RHS and target 169 CeedOperatorApply(op_setup_rhs, x_coord, rhs_ceed, CEED_REQUEST_IMMEDIATE); 170 171 // Cleanup 172 CeedQFunctionDestroy(&qf_setup_rhs); 173 CeedOperatorDestroy(&op_setup_rhs); 174 } 175 176 // Cleanup 177 CeedQFunctionDestroy(&qf_setup_geo); 178 CeedOperatorDestroy(&op_setup_geo); 179 CeedVectorDestroy(&x_coord); 180 181 // Save libCEED data required for level 182 data->basis_x = basis_x; data->basis_u = basis_u; 183 data->elem_restr_x = elem_restr_x; 184 data->elem_restr_u = elem_restr_u; 185 data->elem_restr_u_i = elem_restr_u_i; 186 data->elem_restr_qd_i = elem_restr_qd_i; 187 data->qf_apply = qf_apply; 188 data->op_apply = op_apply; 189 data->q_data = q_data; 190 data->x_ceed = x_ceed; 191 data->y_ceed = y_ceed; 192 data->q_data_size = q_data_size; 193 194 PetscFunctionReturn(0); 195 }; 196 197 // ----------------------------------------------------------------------------- 198 // Setup libCEED level transfer operator objects 199 // ----------------------------------------------------------------------------- 200 PetscErrorCode CeedLevelTransferSetup(DM dm, Ceed ceed, CeedInt level, 201 CeedInt num_comp_u, CeedData *data, 202 BPData bp_data, Vec fine_mult) { 203 int ierr; 204 205 PetscFunctionBeginUser; 206 // Restriction - Fine to corse 207 CeedOperator op_restrict; 208 // Interpolation - Corse to fine 209 CeedOperator op_prolong; 210 // Coarse grid operator 211 CeedOperator op_apply; 212 // Basis 213 CeedBasis basis_u; 214 ierr = CreateBasisFromPlex(ceed, dm, 0, 0, 0, 0, bp_data, &basis_u); 215 CHKERRQ(ierr); 216 217 // --------------------------------------------------------------------------- 218 // Coarse Grid, Prolongation, and Restriction Operators 219 // --------------------------------------------------------------------------- 220 // Create the Operators that compute the prolongation and 221 // restriction between the p-multigrid levels and the coarse grid eval. 222 // --------------------------------------------------------------------------- 223 // Place in libCEED array 224 const PetscScalar *m; 225 PetscMemType m_mem_type; 226 ierr = VecGetArrayReadAndMemType(fine_mult, &m, &m_mem_type); 227 CHKERRQ(ierr); 228 CeedVectorSetArray(data[level]->x_ceed, MemTypeP2C(m_mem_type), 229 CEED_USE_POINTER, (CeedScalar *)m); 230 231 CeedOperatorMultigridLevelCreate(data[level]->op_apply, data[level]->x_ceed, 232 data[level-1]->elem_restr_u, basis_u, 233 &op_apply, &op_prolong, &op_restrict); 234 235 // Restore PETSc vector 236 CeedVectorTakeArray(data[level]->x_ceed, MemTypeP2C(m_mem_type), 237 (CeedScalar **)&m); 238 ierr = VecRestoreArrayReadAndMemType(fine_mult, &m); CHKERRQ(ierr); 239 ierr = VecZeroEntries(fine_mult); CHKERRQ(ierr); 240 // -- Save libCEED data 241 data[level-1]->op_apply = op_apply; 242 data[level]->op_prolong = op_prolong; 243 data[level]->op_restrict = op_restrict; 244 245 CeedBasisDestroy(&basis_u); 246 PetscFunctionReturn(0); 247 }; 248 249 // ----------------------------------------------------------------------------- 250