Takes a ISPartitioning and determines the number of resulting elements on each (partition) process
PetscErrorCode ISPartitioningCount(IS part,PetscInt len,PetscInt count)
Collective on IS
|count ||- array of length size, to contain the number of elements assigned
to each partition, where size is the number of partitions generated
(see notes below).
By default the number of partitions generated (and thus the length
of count) is the size of the communicator associated with IS,
but it can be set by MatPartitioningSetNParts. The resulting array
of lengths can for instance serve as input of PCBJacobiSetTotalBlocks.
If the partitioning has been obtained by MatPartitioningApplyND(),
the returned count does not include the separators.
MatPartitioningCreate(), AOCreateBasic(), ISPartitioningToNumbering(),
MatPartitioningSetNParts(), MatPartitioningApply(), MatPartitioningApplyND()
Index of all IS routines
Table of Contents for all manual pages
Index of all manual pages