#671 GridFactory: index translation for coarse grid creation

Metadata

Property	Value
Reported by	Christian Engwer (christi@conan.iwr.uni-heidelberg.de)
Reported at	Nov 30, 2009 10:51
Type	Bug Report
Version	Unknown
Operating System	Unspecified / All
Last edited by	Christian Engwer (christi@conan.iwr.uni-heidelberg.de)
Last edited at	Mar 23, 2010 14:20
Closed by	Christian Engwer (christi@conan.iwr.uni-heidelberg.de)
Closed at	Mar 23, 2010 14:20
Closed in version	2.0
Resolution	Implemented
Comment

Description

From the protocol:

Data stored in files must be associated with entities in a grid-file. The GridFactory must provide the necessary infrastructure…

Two proposals:

 level-0 elements/vertices/(boundary-segments) are numbered in the order of insertion (only level-0-indexSet).

 add some kind of indexSet to translate between insertionIndex and entityIndex (methods on the grid factory).

Both indices are only valid until you first modify the grid (e.g. refine, load balance).

Arguments:

*      (1) is easier fo the user
*      (1) principle of least surprise
*      (1) helps for debugging
*      (1) requires changes to the grid managers
*      (2) imposes less restrictions on future grids
*      (2) more efficient (for certain grids) during computation
*      (2) requires reorder of data during setup phase

Vote:

```
 insertion order: 5
```
```
 indexSet: 6
```
```
 abstained: 3
```