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libceedsetup.c
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libceedsetup.c
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#include "../include/libceedsetup.h"
#include "../include/petscutils.h"
#include <stdio.h>
// -----------------------------------------------------------------------------
// Destroy libCEED operator objects
// -----------------------------------------------------------------------------
PetscErrorCode CeedDataDestroy(CeedInt i, CeedData data) {
int ierr;
CeedVectorDestroy(&data->q_data);
CeedVectorDestroy(&data->x_ceed);
CeedVectorDestroy(&data->y_ceed);
CeedBasisDestroy(&data->basis_x);
CeedBasisDestroy(&data->basis_u);
CeedElemRestrictionDestroy(&data->elem_restr_u);
CeedElemRestrictionDestroy(&data->elem_restr_x);
CeedElemRestrictionDestroy(&data->elem_restr_u_i);
CeedElemRestrictionDestroy(&data->elem_restr_qd_i);
CeedQFunctionDestroy(&data->qf_apply);
CeedOperatorDestroy(&data->op_apply);
if (i > 0) {
CeedOperatorDestroy(&data->op_prolong);
CeedBasisDestroy(&data->basis_c_to_f);
CeedOperatorDestroy(&data->op_restrict);
}
ierr = PetscFree(data); CHKERRQ(ierr);
PetscFunctionReturn(0);
};
// -----------------------------------------------------------------------------
// Set up libCEED for a given degree
// -----------------------------------------------------------------------------
PetscErrorCode SetupLibceedByDegree(DM dm, Ceed ceed, CeedInt degree,
CeedInt topo_dim, CeedInt q_extra,
PetscInt num_comp_x, PetscInt num_comp_u,
PetscInt g_size, PetscInt xl_size,
BPData bp_data, CeedData data,
PetscBool setup_rhs, CeedVector rhs_ceed,
CeedVector *target) {
int ierr;
DM dm_coord;
Vec coords;
const PetscScalar *coord_array;
CeedBasis basis_x, basis_u;
CeedElemRestriction elem_restr_x, elem_restr_u, elem_restr_u_i, elem_restr_qd_i;
CeedQFunction qf_setup_geo, qf_apply;
CeedOperator op_setup_geo, op_apply;
CeedVector x_coord, q_data, x_ceed, y_ceed;
CeedInt P, Q, num_qpts, c_start, c_end, num_elem,
q_data_size = bp_data.q_data_size;
CeedScalar R = 1, // radius of the sphere
l = 1.0/PetscSqrtReal(3.0); // half edge of the inscribed cube
// CEED bases
P = degree + 1;
Q = P + q_extra;
CeedBasisCreateTensorH1Lagrange(ceed, topo_dim, num_comp_u, P, Q,
bp_data.q_mode, &basis_u);
CeedBasisCreateTensorH1Lagrange(ceed, topo_dim, num_comp_x, 2, Q,
bp_data.q_mode, &basis_x);
CeedBasisGetNumQuadraturePoints(basis_u, &num_qpts);
// CEED restrictions
ierr = DMGetCoordinateDM(dm, &dm_coord); CHKERRQ(ierr);
ierr = DMPlexSetClosurePermutationTensor(dm_coord, PETSC_DETERMINE, NULL);
CHKERRQ(ierr);
ierr = CreateRestrictionFromPlex(ceed, dm_coord, 2, topo_dim, 0, 0, 0,
&elem_restr_x);
CHKERRQ(ierr);
ierr = CreateRestrictionFromPlex(ceed, dm, P, topo_dim, 0, 0, 0, &elem_restr_u);
CHKERRQ(ierr);
ierr = DMPlexGetHeightStratum(dm, 0, &c_start, &c_end); CHKERRQ(ierr);
num_elem = c_end - c_start;
CeedElemRestrictionCreateStrided(ceed, num_elem, num_qpts, num_comp_u,
num_comp_u*num_elem*num_qpts,
CEED_STRIDES_BACKEND, &elem_restr_u_i);
CeedElemRestrictionCreateStrided(ceed, num_elem, num_qpts, q_data_size,
q_data_size*num_elem*num_qpts,
CEED_STRIDES_BACKEND, &elem_restr_qd_i);
// Element coordinates
ierr = DMGetCoordinatesLocal(dm, &coords); CHKERRQ(ierr);
ierr = VecGetArrayRead(coords, &coord_array); CHKERRQ(ierr);
CeedElemRestrictionCreateVector(elem_restr_x, &x_coord, NULL);
CeedVectorSetArray(x_coord, CEED_MEM_HOST, CEED_COPY_VALUES,
(PetscScalar *)coord_array);
ierr = VecRestoreArrayRead(coords, &coord_array);
// Create the persistent vectors that will be needed in setup and apply
CeedVectorCreate(ceed, q_data_size*num_elem*num_qpts, &q_data);
CeedVectorCreate(ceed, xl_size, &x_ceed);
CeedVectorCreate(ceed, xl_size, &y_ceed);
// Create the QFunction that builds the context data
CeedQFunctionCreateInterior(ceed, 1, bp_data.setup_geo, bp_data.setup_geo_loc,
&qf_setup_geo);
CeedQFunctionAddInput(qf_setup_geo, "x", num_comp_x, CEED_EVAL_INTERP);
CeedQFunctionAddInput(qf_setup_geo, "dx", num_comp_x*topo_dim, CEED_EVAL_GRAD);
CeedQFunctionAddInput(qf_setup_geo, "weight", 1, CEED_EVAL_WEIGHT);
CeedQFunctionAddOutput(qf_setup_geo, "q_data", q_data_size, CEED_EVAL_NONE);
// Create the operator that builds the quadrature data
CeedOperatorCreate(ceed, qf_setup_geo, NULL, NULL, &op_setup_geo);
CeedOperatorSetField(op_setup_geo, "x", elem_restr_x, basis_x,
CEED_VECTOR_ACTIVE);
CeedOperatorSetField(op_setup_geo, "dx", elem_restr_x, basis_x,
CEED_VECTOR_ACTIVE);
CeedOperatorSetField(op_setup_geo, "weight", CEED_ELEMRESTRICTION_NONE, basis_x,
CEED_VECTOR_NONE);
CeedOperatorSetField(op_setup_geo, "q_data", elem_restr_qd_i,
CEED_BASIS_COLLOCATED, CEED_VECTOR_ACTIVE);
// Setup q_data
CeedOperatorApply(op_setup_geo, x_coord, q_data, CEED_REQUEST_IMMEDIATE);
// Set up PDE operator
CeedInt in_scale = bp_data.in_mode == CEED_EVAL_GRAD ? topo_dim : 1;
CeedInt out_scale = bp_data.out_mode == CEED_EVAL_GRAD ? topo_dim : 1;
CeedQFunctionCreateInterior(ceed, 1, bp_data.apply, bp_data.apply_loc,
&qf_apply);
CeedQFunctionAddInput(qf_apply, "u", num_comp_u*in_scale, bp_data.in_mode);
CeedQFunctionAddInput(qf_apply, "q_data", q_data_size, CEED_EVAL_NONE);
CeedQFunctionAddOutput(qf_apply, "v", num_comp_u*out_scale, bp_data.out_mode);
// Create the mass or diff operator
CeedOperatorCreate(ceed, qf_apply, NULL, NULL, &op_apply);
CeedOperatorSetField(op_apply, "u", elem_restr_u, basis_u, CEED_VECTOR_ACTIVE);
CeedOperatorSetField(op_apply, "q_data", elem_restr_qd_i, CEED_BASIS_COLLOCATED,
q_data);
CeedOperatorSetField(op_apply, "v", elem_restr_u, basis_u, CEED_VECTOR_ACTIVE);
// Set up RHS if needed
if (setup_rhs) {
CeedQFunction qf_setup_rhs;
CeedOperator op_setup_rhs;
CeedVectorCreate(ceed, num_elem*num_qpts*num_comp_u, target);
// Create the q-function that sets up the RHS and true solution
CeedQFunctionCreateInterior(ceed, 1, bp_data.setup_rhs, bp_data.setup_rhs_loc,
&qf_setup_rhs);
CeedQFunctionAddInput(qf_setup_rhs, "x", num_comp_x, CEED_EVAL_INTERP);
CeedQFunctionAddInput(qf_setup_rhs, "q_data", q_data_size, CEED_EVAL_NONE);
CeedQFunctionAddOutput(qf_setup_rhs, "true_soln", num_comp_u, CEED_EVAL_NONE);
CeedQFunctionAddOutput(qf_setup_rhs, "rhs", num_comp_u, CEED_EVAL_INTERP);
// Create the operator that builds the RHS and true solution
CeedOperatorCreate(ceed, qf_setup_rhs, NULL, NULL, &op_setup_rhs);
CeedOperatorSetField(op_setup_rhs, "x", elem_restr_x, basis_x,
CEED_VECTOR_ACTIVE);
CeedOperatorSetField(op_setup_rhs, "q_data", elem_restr_qd_i,
CEED_BASIS_COLLOCATED, q_data);
CeedOperatorSetField(op_setup_rhs, "true_soln", elem_restr_u_i,
CEED_BASIS_COLLOCATED, *target);
CeedOperatorSetField(op_setup_rhs, "rhs", elem_restr_u, basis_u,
CEED_VECTOR_ACTIVE);
// Set up the libCEED context
CeedQFunctionContext ctx_rhs_setup;
CeedQFunctionContextCreate(ceed, &ctx_rhs_setup);
CeedScalar rhs_setup_data[2] = {R, l};
CeedQFunctionContextSetData(ctx_rhs_setup, CEED_MEM_HOST, CEED_COPY_VALUES,
sizeof rhs_setup_data, &rhs_setup_data);
CeedQFunctionSetContext(qf_setup_rhs, ctx_rhs_setup);
CeedQFunctionContextDestroy(&ctx_rhs_setup);
// Setup RHS and target
CeedOperatorApply(op_setup_rhs, x_coord, rhs_ceed, CEED_REQUEST_IMMEDIATE);
// Cleanup
CeedQFunctionDestroy(&qf_setup_rhs);
CeedOperatorDestroy(&op_setup_rhs);
}
// Cleanup
CeedQFunctionDestroy(&qf_setup_geo);
CeedOperatorDestroy(&op_setup_geo);
CeedVectorDestroy(&x_coord);
// Save libCEED data required for level
data->basis_x = basis_x; data->basis_u = basis_u;
data->elem_restr_x = elem_restr_x;
data->elem_restr_u = elem_restr_u;
data->elem_restr_u_i = elem_restr_u_i;
data->elem_restr_qd_i = elem_restr_qd_i;
data->qf_apply = qf_apply;
data->op_apply = op_apply;
data->q_data = q_data;
data->x_ceed = x_ceed;
data->y_ceed = y_ceed;
PetscFunctionReturn(0);
};
// -----------------------------------------------------------------------------
// Setup libCEED level transfer operator objects
// -----------------------------------------------------------------------------
PetscErrorCode CeedLevelTransferSetup(Ceed ceed, CeedInt num_levels,
CeedInt num_comp_u, CeedData *data,
CeedInt *level_degrees,
CeedQFunction qf_restrict, CeedQFunction qf_prolong) {
// Return early if num_levels=1
if (num_levels == 1)
PetscFunctionReturn(0);
// Set up each level
for (CeedInt i=1; i<num_levels; i++) {
// P coarse and P fine
CeedInt Pc = level_degrees[i-1] + 1;
CeedInt Pf = level_degrees[i] + 1;
// Restriction - Fine to corse
CeedBasis basis_c_to_f;
CeedOperator op_restrict;
// Basis
CeedBasisCreateTensorH1Lagrange(ceed, 3, num_comp_u, Pc, Pf,
CEED_GAUSS_LOBATTO, &basis_c_to_f);
// Create the restriction operator
CeedOperatorCreate(ceed, qf_restrict, CEED_QFUNCTION_NONE,
CEED_QFUNCTION_NONE, &op_restrict);
CeedOperatorSetField(op_restrict, "input", data[i]->elem_restr_u,
CEED_BASIS_COLLOCATED, CEED_VECTOR_ACTIVE);
CeedOperatorSetField(op_restrict, "output", data[i-1]->elem_restr_u,
basis_c_to_f, CEED_VECTOR_ACTIVE);
// Save libCEED data required for level
data[i]->basis_c_to_f = basis_c_to_f;
data[i]->op_restrict = op_restrict;
// Interpolation - Corse to fine
CeedOperator op_prolong;
// Create the prolongation operator
CeedOperatorCreate(ceed, qf_prolong, CEED_QFUNCTION_NONE,
CEED_QFUNCTION_NONE, &op_prolong);
CeedOperatorSetField(op_prolong, "input", data[i-1]->elem_restr_u,
basis_c_to_f, CEED_VECTOR_ACTIVE);
CeedOperatorSetField(op_prolong, "output", data[i]->elem_restr_u,
CEED_BASIS_COLLOCATED, CEED_VECTOR_ACTIVE);
// Save libCEED data required for level
data[i]->op_prolong = op_prolong;
}
PetscFunctionReturn(0);
};
// -----------------------------------------------------------------------------
// Set up libCEED for BDDC interface vertices
// -----------------------------------------------------------------------------
PetscErrorCode SetupLibceedBDDC(DM dm_vertex, CeedData data_fine,
CeedDataBDDC data_vertex,
PetscInt g_vertex_size, PetscInt xl_vertex_size,
BPData bp_data {
int ierr;
Ceed ceed = data_fine->ceed;
CeedBasis basis_Pi, basis_u = data_fine->basis_u;
CeedElemRestriction elem_restr_Pi, elem_restr_r;
CeedOperator op_Pi_r, op_r_Pi, op_Pi_Pi, op_r_r, op_r_r_inv,;
CeedVector x_Pi_ceed, y_Pi_ceed, x_r_ceed, y_r_ceed, mask_r_ceed, mask_Gamma_ceed, mask_I_ceed;
CeedInt topo_dim, num_comp_u, P, Q, num_qpts, num_elem, elem_size,
q_data_size = bp_data.q_data_size;
// CEED basis
CeedBasisGetDimension(basis_u, &topo_dim);
CeedBasisGetNumComponents(basis_u, &num_comp_u);
CeedBasisGetNumNodes1D(basis_u, &P);
elem_size = CeedIntPow(P, topo_dim);
CeedBasisGetNumQuadraturePoints1D(basis_u, &Q);
CeedBasisGetNumQuadraturePoints(basis_u, &num_qpts);
CeedScalar *interp_1d, *grad_1d, *q_ref_1d, *q_weight_1d;
interp_1d = calloc(2*Q * sizeof(CeedScalar));
CeedScalar *temp;
CeedBasisGetInterp1D(basis_u, &temp);
memcpy(interp_1d, temp, Q * sizeof(CeedScalar));
memcpy(&interp_1d[1*Q], temp[(P-1)*Q], Q * sizeof(CeedScalar));
grad_1d = calloc(2*Q * sizeof(CeedScalar));
CeedBasisGetGrad1D(basis_u, &temp);
memcpy(grad_1d, temp, Q * sizeof(CeedScalar));
memcpy(&grad_1d[1*Q], temp[(P-1)*Q], Q * sizeof(CeedScalar));
q_ref_1d = calloc(Q * sizeof(CeedScalar));
CeedBasisGetQRef(basis_u, &temp);
memcpy(q_ref_1d, temp, Q * sizeof(CeedScalar));
q_weight_1d = calloc(Q * sizeof(CeedScalar));
CeedBasisGetQWeights(basis_u, &temp);
memcpy(q_weight_1d, temp, Q * sizeof(CeedScalar));
CeedBasisCreateTensorH1(ceed, topo_dim, num_comp_u, 1, Q,
interp_1d, grad_1d, q_ref_1d,
q_weight_1d, &basis_Pi);
// CEED restrictions
// -- Interface vertex restriction
ierr = CreateRestrictionFromPlex(ceed, dm_vertex, P, topo_dim, 0, 0, 0, &elem_restr_Pi);
CHKERRQ(ierr);
// -- Subdomain restriction
ierr = DMPlexGetHeightStratum(dm_vertex, 0, &c_start, &c_end); CHKERRQ(ierr);
num_elem = c_end - c_start;
CeedInt strides = [num_comp_u, 1, num_comp_u*elem_size];
CeedElemRestrictionCreateStrided(ceed, num_elem, elem_size, num_comp_u,
num_comp_u *num_elem*elem_size,
strides, &elem_restr_r);
// Create the persistent vectors that will be needed
CeedVectorCreate(ceed, xl_vertex_size, &x_Pi_ceed);
CeedVectorCreate(ceed, xl_vertex_size, &y_Pi_ceed);
CeedVectorCreate(ceed, num_comp_u *elem_size*num_elem, &x_r_ceed);
CeedVectorCreate(ceed, num_comp_u *elem_size*num_elem, &y_r_ceed);
// Create the mass or diff operator
CeedQFunction qf_apply = data_fine->qf_apply;
// -- Interface nodes
CeedOperatorSetField(op_Pi_Pi, "u", elem_restr_Pi, basis_u, CEED_VECTOR_ACTIVE);
CeedOperatorSetField(op_Pi_Pi, "q_data", data_fine->elem_restr_qd_i,
CEED_BASIS_COLLOCATED, data_fine->q_data);
CeedOperatorSetField(op_Pi_Pi, "v", elem_restr_Pi, basis_u, CEED_VECTOR_ACTIVE);
// -- Interface vertices to subdomain
CeedOperatorSetField(op_r_Pi, "u", elem_restr_r, basis_u, CEED_VECTOR_ACTIVE);
CeedOperatorSetField(op_r_Pi, "q_data", data_fine->elem_restr_qd_i,
CEED_BASIS_COLLOCATED, data_fine->q_data);
CeedOperatorSetField(op_r_Pi, "v", elem_restr_Pi, basis_u, CEED_VECTOR_ACTIVE);
// -- Subdomain to interface vertices
CeedOperatorSetField(op_Pi_r, "u", elem_restr_Pi, basis_u, CEED_VECTOR_ACTIVE);
CeedOperatorSetField(op_Pi_r, "q_data", data_fine->elem_restr_qd_i,
CEED_BASIS_COLLOCATED, data_fine->q_data);
CeedOperatorSetField(op_Pi_r, "v", elem_restr_r, basis_u, CEED_VECTOR_ACTIVE);
// -- Subdomain to subdomain
CeedOperatorSetField(op_r_r, "u", elem_restr_r, basis_u, CEED_VECTOR_ACTIVE);
CeedOperatorSetField(op_r_r, "q_data", data_fine->elem_restr_qd_i,
CEED_BASIS_COLLOCATED, data_fine->q_data);
CeedOperatorSetField(op_r_r, "v", elem_restr_r, basis_u, CEED_VECTOR_ACTIVE);
// -- Subdomain FDM inverse
CeedOperatorCreateFDMElementInverse(op_r_r, &op_r_r_inv, CEED_REQUEST_IMMEDIATE);
// Save libCEED data required for level
data_vertex->basis_Pi = basis_Pi;
data_vertex->elem_restr_Pi = elem_restr_Pi;
data_vertex->elem_restr_r = elem_restr_r;
data_vertex->op_Pi_r = op_Pi_r;
data_vertex->op_r_Pi = op_r_Pi;
data_vertex->op_Pi_Pi = op_Pi_Pi;
data_vertex->op_r_r = op_r_r;
data_vertex->op_r_r_inv = op_r_r_inv;
data_vertex->x_Pi_ceed = x_Pi_ceed;
data_vertex->y_Pi_ceed = y_Pi_ceed;
data_vertex->x_r_ceed = x_r_ceed;
data_vertex->y_r_ceed = y_r_ceed;
PetscFunctionReturn(0);
};
// -----------------------------------------------------------------------------