petsc-3.8.4 2018-03-24
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MatPreallocateFinalize

 Ends the block of code that will count the number of nonzeros per row in a matrix providing the data that one can use to correctly preallocate the matrix.

Synopsis

#include <petscmat.h>
PetscErrorCode MatPreallocateFinalize(PetscInt *dnz, PetscInt *onz)
Collective on MPI_Comm

Input Parameters

dnz - the array that was be passed to the matrix preallocation routines
ozn - the other array passed to the matrix preallocation routines

Notes

See Users-Manual: Chapter 14 Hints for Performance Tuning for more details.

Do not malloc or free dnz and onz that is handled internally by these routines

This is a MACRO not a function because it closes the { started in MatPreallocateInitialize().

See Also

MatPreallocateInitialize(), MatPreallocateSet(), MatPreallocateSymmetricSetBlock(), MatPreallocateSetLocal(),
MatPreallocateSymmetricSetLocalBlock()

Level:intermediate
Location:src/mat/../../include/petscmat.h
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages