[Dune] [#1106] Revision of the parallel interface in dune-grid.

[Dune]

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A new Flyspray task has been opened.  Details are below. 

User who did this - Robert Klöfkorn (robertk) 

Attached to Project - Dune
Summary - Revision of the parallel interface in dune-grid.
Task Type - Bug Report
Category - Dune Core Modules
Status - New
Assigned To - 
Operating System - Unspecified / All
Severity - Low
Priority - Normal
Reported Version - 2.0
Due in Version - Undecided
Due Date - Undecided
Details - In the current implementation of the parallel interface in dune-grid there are several things missing: 

1) Communication of data through Intersections. The current interface would not allow parallel grids with non-conforming refinement without ghost cells or overlap. However, is is required for efficient implementation of DG methods on super computers with a large number of cores and only a few number of cells per core. 

2) Non-blocking communication or even asynchronous communication is currently not possible with communication methods on the Grid class. 

Please add further things missing such that we obtain a list of possible improvements for the next meeting. 

More information can be found at the following URL:
http://www.dune-project.org/flyspray/index.php?do=details&task_id=1106

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