This entry provides some global informations on the mesh, which is needed across all partitions.

List of treeIDs of the first element on each partition, has a length of global%nParts

List of treeIDs of the last element on each partition, has a length of global%nParts

The treeIDs of each element (the array has a length of nElems) these IDs identify the element in the complete mesh, with a breadth-first numbering scheme. Allowing easy computation of parents and children. [treeid] \ref treeID

TreeID

The coordinate description of an element has three spatial entries and a fourth entry indicating the refinement level in the octree, resulting in a tuple of four integers: \f$(x, y, z, L)\f$.

This coordinate fully describes the spatial shape and position of an element and is important to determine spatial relations between elements. It can be obtained from a given treeID by the following procedure. 1. First, the \ref tem_topology_module::tem_levelof "refinement level" is found. 2. Then a \ref tem_topology_module::tem_firstidatlevel "level-offset" is calculated. 3. After the offset is known, the Morton index of the node in question is obtained by subtracting the offset \f$s\f$ from the treeID of the node. 4. Finally a simple bit interleaving rule allows the \ref tem_topology_module::tem_coordofid "transformation from the Morton index to the three dimensional coordinates".

The spatial indices are limited by the refinement level: \f$x, y, z \in \mathbf{Z}_{\ge 0}: x, y, z < 2^L\f$. To avoid undefined coordinates, movements through the mesh by additions to indices are done in a modulo(\f$2^L\f$) safeguard resulting in a periodic universe cube. This enables the movement in the mesh in horizontal direction (e.g. for stencil neighbor identification) by index alteration and translation into a treeID again.

Bit field of element properties for each element (the array has a length of nElems), each bit in the 8 byte integer indicates the presence or absence of a given property, which are further described in the Property component.

declaration of additional elemental properties, the array has a length of global%nProperties, each property provides a list of local element indices of elements with this property.

Path for all elements in the treeID array

Name of the file that contains weight information for each element to allow load balancing. If empty string, balancing will be deactivated.

File to write weights to after simulation. Defaults to the same name as weights_file, if you do not want to have the input file overwritten, you can provide a different file to write to by setting write_weights accordingly in the configuration.

Level weights as provided by the solver.