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

PetscErrorCode MatPreallocateFinalize(PetscInt *dnz, PetscInt *onz)
Collective on MPI_Comm

Input Parameters

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

Notes

See the chapter in the users manual on performance for more details

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

See Also

MatPreallocateInitialize(), MatPreallocateSet(), MatPreallocateSymmetricSet(), MatPreallocateSetLocal(),
MatPreallocateSymmetricInitialize(), MatPreallocateSymmetricSetLocal()

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