#include <GridHierarchy.h>
Public Member Functions | |
| void | DAGH_ComposeHierarchy (void) |
| Compose the grid hierarchy. | |
| void | DAGH_RecomposeHierarchy (int Partition) |
| Recompose the whole hierachy and all associated GridFunctions. | |
| void | DAGH_Refine (const int lev) |
| Use entire level as new refinement region. | |
| void | DAGH_Refine (BBoxList &bblist, const int lev) |
| Sets refinement regions on a particular level. | |
| void | DAGH_Checkpoint (const char *name) |
| Write GridHierarchy into checkpointing-file. | |
| void | DAGH_Checkpoint (std::stringstream &ofs) |
| Write GridHierarchy into memory. | |
| bool | DAGH_RecomposeHierarchy (const char *name) |
| Recompose GridHierarchy from checkpointing-file. | |
| void | DAGH_RecomposeHierarchy (std::stringstream &ifs) |
| Recompose GridHierarchy from memory. | |
| int | stepsize (const int lev) const |
| Step-size in internal integer time-units on a particular level. | |
| int | stepstaken (const int t, const int l) const |
| Steps already taken in a subiteration on the refined grids. | |
| double | delta_t (const int l) const |
| Physical time-step on level l. | |
| double | delta_x (const int dim, const int l) const |
| Physical step-size on level l. | |
| int | refinefactor (const int lev) const |
| Refinement factor employed for new refinement grids on level lev. | |
| int | refinedby (const int lev) const |
| Refinement factor of level lev in respect to the coarsest grid. | |
| int | refinedby (const int l1, const int l2) const |
| Refinement factor between levels l1 and l2. | |
| int | buffer () const |
| Buffer size for proper nesting of refinement grids. | |
| const int & | gucfactor () const |
| The GridUnit-coarsening factor. | |
| const int & | guminwidth () const |
| The minimal GridUnit-width. | |
| void | setgucfactor (const int &cfac) |
| Enforce an appropriate minimal GridUnit-width. | |
| const int & | maxGridBoxSize () const |
| Maximal size of GridBox. | |
| int | getCurrentTime (const int lev) const |
| Actual time in internal integer time-units. | |
| void | incrCurrentTime (const int lev) |
| Increment the actual integer-time on a level by one time-step. | |
| int | getPreviousTime (const int lev) const |
| Previous time in internal integer time-units. | |
| int | getNextTime (const int lev) const |
| Next time in internal integer time-units. | |
| GridBoxList ** | lgbl () |
| Local GridBoxLists on all levels. | |
| GridBoxList ** | ggbl () |
| Global GridBoxLists on all levels. | |
| GridBoxList * | lgbl (int lev) |
| Actual local GridBoxList on level lev. | |
| GridBoxList * | ggbl (int lev) |
| Actual global GridBoxList on level lev. | |
| Coords | llb (void) const |
| Integer coords of the basbox. | |
| DCoords | worldCoords (const int *lc, const int *ls) const |
| Transform integer-coordinates into physical coordinates. | |
| BBox | bbbox (void) const |
| Bounding box of the entire base grid. | |
| BBox | wholebbox (void) const |
| Interior box of the entire base grid. | |
| BBoxList * | wholebaselist (void) const |
| Interior boxes of the actual base grid. | |
| const double * | wholebndry (void) const |
| Coordinates of entire base grid and cut-off regions. | |
Public Attributes | |
| short const | rank |
| Grid rank. | |
| short | distribution_type |
| Distribution information. | |
| GridUnitList * | complist |
| The COMPOSITE list. | |
| GridBoxList ** | globalgbl |
| Actual and last Grid BoxList for the global topology of each level. | |
| GridUnitList * | locallist |
| Local GridUnit list. | |
| GridBoxList ** | localgbl |
| Actual and last Grid BoxList for the local topology of each level. | |
| BBoxList ** | localbboxarray |
| New refinement topology. | |
| short | gfnum |
| GridFunction Information. | |
| short | io_type |
| IO Servers. | |
The global topology of each level is stored in a GridBoxList of the array globalgbl. The local portion of each processor is stored in localgbl. All GridFunctions follow automatically the topology determined by these lists. A change of the hierarchy is initiated by initializing the BBoxLists in localbboxarray with the new topology found on each processor. When RecomposeHierarchy() is called the global union of these BBoxLists is constructed on each level. The workload of the entire hierachy is estimated and accumulated in GridUnit-objects. The minimal size of a GridUnit is one cell of the coarsest level. The usage of larger GridUnits can be enforced with setgucfactor(), the GridUnit-coarsening factor. The partitioning algorithm breaks up the derived composite GridUnitList complist in load-balanced portions and assigns a locallist to each processor. Each node derives its new GridBoxList localgbl by intersecting its locallist with the global union of BBoxLists. globalgbl is finally found as global union of all localgbl's. Employing localgbl, globalgbl and their counterparts oldlocalgbl, oldglobalgbl of the preceeding hierarchy all GridFunctions are reconstructed.
| void GridHierarchy::DAGH_RecomposeHierarchy | ( | int | Partition | ) |
Recompose the whole hierachy and all associated GridFunctions.
When RecomposeHierarchy() is called the global union of localbbl is constructed on each level. The workload of the entire hierachy is estimated and accumulated in GridUnit-objects. The partitioning algorithm breaks up the derived composite GridUnitList complist in load-balanced portions and assigns a locallist to each processor. Each node derives its new GridBoxList localgbl by intersecting its locallist with the global union of BBoxLists. globalgbl is finally found as global union of all localgbl's. Employing localgbl, globalgbl and their counterparts oldlocalgbl, oldglobalgbl of the preceeding hierarchy all GridFunctions are reconstructed.
| Partition | int. DAGHFalse=skip the partitioner (minimizes communication). |
| void GridHierarchy::DAGH_Refine | ( | BBoxList & | bblist, | |
| const int | lev | |||
| ) |
Sets refinement regions on a particular level.
| bblist | BBoxList &. Refinement region. | |
| lev | int. Level. |
| int GridHierarchy::getCurrentTime | ( | const int | lev | ) | const [inline] |
Actual time in internal integer time-units.
To each time-step that took place during a run a unique integer time-value is assigned. The time-value depends on the actual level and is calculated in respect to the list of refinement factors.
| const int& GridHierarchy::gucfactor | ( | ) | const [inline] |
The GridUnit-coarsening factor.
Coarsen level 0 by this factor when constructing GridUnits. The GuC-factor determines the minimal size of elements for partitioning. The usage of coarser GridFunctions, e.g. for error estimation or multigrid algorithms, requires coarser GridUnits. Otherwise it is not guaranteed that all data is local available.
| void GridHierarchy::setgucfactor | ( | const int & | cfac | ) | [inline] |
Enforce an appropriate minimal GridUnit-width.
Application-dependent.
| int GridHierarchy::stepsize | ( | const int | lev | ) | const [inline] |
Step-size in internal integer time-units on a particular level.
On the highest possible level stepsize is 1.
1.4.7