# PetscSF#

PETSc object for setting up and managing the communication of certain entries of arrays and Vec between MPI ranks.

## Synopsis#

typedef struct _p_PetscSF *PetscSF;


PetscSF uses the concept of star forests to indicate and determine the communication patterns concisely and efficiently. A star https://en.wikipedia.org/wiki/Star_(graph_theory) forest is simply a collection of trees of height 1. The leave nodes represent “ghost locations” for the root nodes.

PetscSFCreate(), VecScatter, VecScatterCreate()

intermediate

## Location#

include/petscsftypes.h

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