#include <petscmat.h> PetscErrorCode MatPreallocateInitialize(MPI_Comm comm, PetscInt nrows, PetscInt ncols, PetscInt *dnz, PetscInt *onz)Collective on MPI_Comm Many br
comm | - the communicator that will share the eventually allocated matrix Many br | |
nrows | - the number of LOCAL rows in the matrix Many br | |
ncols | - the number of LOCAL columns in the matrix Many br |
dnz | - the array that will be passed to the matrix preallocation routines Many br | |
ozn | - the other array passed to the matrix preallocation routines Many br |
Many br
Do not malloc or free dnz and onz, that is handled internally by these routines Many br
Use MatPreallocateInitializeSymmetric() for symmetric matrices (MPISBAIJ matrices) Many br
This is a MACRO not a function because it has a leading { that is closed by PetscPreallocateFinalize(). Many br
Level:intermediate
Location:src/mat/../../include/petscmat.h
Index of all Mat routines
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