MatPartitioningPTScotchSetStrategy#

Sets the strategy to be used in PTScotch.

Synopsis#

#include "petscmat.h" 
PetscErrorCode MatPartitioningPTScotchSetStrategy(MatPartitioning part, MPPTScotchStrategyType strategy)

Collective

Input Parameters#

  • part - the partitioning context

  • strategy - the strategy, one of

     MP_PTSCOTCH_DEFAULT     - Default behavior
     MP_PTSCOTCH_QUALITY     - Prioritize quality over speed
     MP_PTSCOTCH_SPEED       - Prioritize speed over quality
     MP_PTSCOTCH_BALANCE     - Enforce load balance
     MP_PTSCOTCH_SAFETY      - Avoid methods that may fail
     MP_PTSCOTCH_SCALABILITY - Favor scalability as much as possible

Options Database Key#

  • -mat_partitioning_ptscotch_strategy [quality,speed,balance,safety,scalability] - strategy

Note#

The default is MP_SCOTCH_QUALITY. See the PTScotch documentation for more information.

See Also#

MATPARTITIONINGSCOTCH, MatPartitioningPTScotchSetImbalance(), MatPartitioningPTScotchGetStrategy()

Level#

advanced

Location#

src/mat/partition/impls/scotch/scotch.c

Implementations#

MatPartitioningPTScotchSetStrategy_PTScotch in src/mat/partition/impls/scotch/scotch.c

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