DMPlexRebalanceSharedPoints#

Redistribute points in the plex that are shared in order to achieve better balancing. This routine updates the PointSF of the DM inplace.

Synopsis#

#include "petscdmplex.h"   
PetscErrorCode DMPlexRebalanceSharedPoints(DM dm, PetscInt entityDepth, PetscBool useInitialGuess, PetscBool parallel, PetscBool *success)

Input parameters#

  • dm - The DMPLEX object.

  • entityDepth - depth of the entity to balance (0 -> balance vertices).

  • useInitialGuess - whether to use the current distribution as initial guess (only used by ParMETIS).

  • parallel - whether to use ParMETIS and do the partition in parallel or whether to gather the graph onto a single process and use METIS.

Output parameter#

  • success - whether the graph partitioning was successful or not, optional. Unsuccessful simply means no change to the partitioning

Options Database Keys#

  • -dm_plex_rebalance_shared_points_parmetis - Use ParMetis instead of Metis for the partitioner

  • -dm_plex_rebalance_shared_points_use_initial_guess - Use current partition to bootstrap ParMetis partition

  • -dm_plex_rebalance_shared_points_use_mat_partitioning - Use the MatPartitioning object to perform the partition, the prefix for those operations is -dm_plex_rebalance_shared_points_

  • -dm_plex_rebalance_shared_points_monitor - Monitor the shared points rebalance process

See Also#

DMPlex: Unstructured Grids, DM, DMPLEX, DMPlexDistribute(), DMPlexCreateOverlap()

Level#

intermediate

Location#

src/dm/impls/plex/plexpartition.c

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Index of all DMPlex routines
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Index of all manual pages