petsc-3.3-p7 2013-05-11


Allocates PetscLayout space and sets the map contents to the default.


#include "petscvec.h"   
PetscErrorCode  PetscLayoutCreate(MPI_Comm comm,PetscLayout *map)
Collective on MPI_Comm

Input Parameters

comm - the MPI communicator
map - pointer to the map

Notes: Typical calling sequence PetscLayoutCreate(MPI_Comm,PetscLayout *); PetscLayoutSetBlockSize(PetscLayout,1); PetscLayoutSetSize(PetscLayout,n) or PetscLayoutSetLocalSize(PetscLayout,N); PetscLayoutSetUp(PetscLayout);

Optionally use any of the following

PetscLayoutGetSize(PetscLayout,PetscInt *); or PetscLayoutGetLocalSize(PetscLayout,PetscInt *;) PetscLayoutGetRange(PetscLayout,PetscInt *rstart,PetscInt *rend); or PetscLayoutGetRanges(PetscLayout,const PetscInt *range[]) PetscLayoutDestroy(PetscLayout);

The PetscLayout object and methods are intended to be used in the PETSc Vec and Mat implementions; it is often not needed in user codes unless you really gain something in their use.

Fortran Notes

Not available from Fortran

See Also

PetscLayoutSetLocalSize(), PetscLayoutSetSize(), PetscLayoutGetSize(), PetscLayoutGetLocalSize(), PetscLayout, PetscLayoutDestroy(),
PetscLayoutGetRange(), PetscLayoutGetRanges(), PetscLayoutSetBlockSize(), PetscLayoutGetBlockSize(), PetscLayoutSetUp()

Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages