10 #include "xdmf_mesh.h"
11 #include "xdmf_utils.h"
12 #include <dolfinx/common/MPI.h>
13 #include <dolfinx/mesh/MeshTags.h>
22 namespace xdmf_meshtags
27 void add_meshtags(MPI_Comm comm,
const mesh::MeshTags<T>& meshtags,
28 pugi::xml_node& xml_node,
const hid_t h5_id,
29 const std::string name)
32 assert(meshtags.mesh());
33 std::shared_ptr<const mesh::Mesh> mesh = meshtags.mesh();
34 const int dim = meshtags.dim();
35 const std::vector<std::int32_t>& active_entities = meshtags.indices();
36 const std::string path_prefix =
"/MeshTags/" + name;
38 mesh->topology(), mesh->geometry(), dim,
42 pugi::xml_node attribute_node = xml_node.append_child(
"Attribute");
43 assert(attribute_node);
44 attribute_node.append_attribute(
"Name") = name.c_str();
45 attribute_node.append_attribute(
"AttributeType") =
"Scalar";
46 attribute_node.append_attribute(
"Center") =
"Cell";
48 std::int64_t global_num_values = 0;
49 const std::int64_t local_num_values = active_entities.size();
50 MPI_Allreduce(&local_num_values, &global_num_values, 1, MPI_INT64_T, MPI_SUM,
52 const std::int64_t offset
55 xdmf_utils::add_data_item(attribute_node, h5_id, path_prefix +
"/Values",
56 meshtags.values(), offset, {global_num_values, 1},
static int size(MPI_Comm comm)
Return size of the group (number of processes) associated with the communicator.
Definition: MPI.cpp:87
static std::size_t global_offset(MPI_Comm comm, std::size_t range, bool exclusive)
Find global offset (index) (wrapper for MPI_(Ex)Scan with MPI_SUM as reduction op)
Definition: MPI.cpp:94
void add_topology_data(MPI_Comm comm, pugi::xml_node &xml_node, const hid_t h5_id, const std::string path_prefix, const mesh::Topology &topology, const mesh::Geometry &geometry, const int cell_dim, const std::vector< std::int32_t > &active_entities)
Add Topology xml node.
Definition: xdmf_mesh.cpp:18