petsc-3.8.4 2018-03-24

PetscLayoutSetUp

given a map where you have set either the global or local size sets up the map so that it may be used.

#include "petscis.h" 
PetscErrorCode PetscLayoutSetUp(PetscLayout map)

Collective on MPI_Comm

map -pointer to the map

Notes: Typical calling sequence

PetscLayoutCreate(MPI_Comm,PetscLayout *);

PetscLayoutSetBlockSize(PetscLayout,1);

PetscLayoutSetSize(PetscLayout,n) or PetscLayoutSetLocalSize(PetscLayout,N); or both

PetscLayoutSetUp(PetscLayout);

PetscLayoutGetSize(PetscLayout,PetscInt *);

If the local size, global size are already set and range exists then this does nothing.