> On 29 Aug 2018, at 02:00, Doug Shi-Dong <[email protected]> wrote: > > Hello, > > I am looking at the $GhostElements section of the MSH4 file format and there > seems to be inconsistencies. According to the documentation: > > <$GhostElements> > numGhostElement(int) > elementTag(int) partition(int) GhostCellOwner(int) > GhostCellOwnerPartition(int) ... > <$EndGhostElements> > > > Here is my current understanding and what I would expect: > • 'partition(int)' corresponds to the partition where the REAL cell is > located > • 'GhostCellOwner(int) corresponds to the number of partitions in which > element #elementTag appears as a GHOST cell > • 'GhostCellOwnerPartition(int)' corresponds to the list of partitions > in which element #elementTag appears as a GHOST cell > > However, when exporting the MSH4 format there seems to be a bug such that : > • 'partition(int) corresponds to ONE of the partitions in which the > element #elementTag appears as a GHOST cell > • 'GhostCellOwnerPartition(int)' corresponds to the partition in which > the REAL cell is located > > As a result, if element #elementTag appears as a GHOST cell in multiple > partitions, the current implementation will have the REAL cell partition > number repeated multiple times in the 'GhostCellOwnerPartition(int)'. > > Therefore, it seems that there has been a mix-up between 'partition' and > 'GhostCellOwnerPartition'. >
Indeed: the documentation has been updated - see http://gmsh.info/dev/doc/texinfo/gmsh.html Thanks for the feedback! Christophe > I am exporting a partitioned mesh in the MSH4 format using the latest stable > binary (4.0.0, August 22 2018) and have tried the latest development build > 296dd75f0b29090c28165df397cac4ff922832e5. > > Thank you for time. > > Best Regards, > > Doug > _______________________________________________ > gmsh mailing list > [email protected] > http://onelab.info/mailman/listinfo/gmsh — Prof. Christophe Geuzaine University of Liege, Electrical Engineering and Computer Science http://www.montefiore.ulg.ac.be/~geuzaine Free software: http://gmsh.info | http://getdp.info | http://onelab.info _______________________________________________ gmsh mailing list [email protected] http://onelab.info/mailman/listinfo/gmsh
