petsc-3.11.4 2019-09-28

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

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 range exists, and local size is not set, everything gets computed from the range.

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

developer