petsc-3.12.4 2020-02-04
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# PetscSF

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

### 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.

### See Also

PetscSFCreate(), VecScatter, VecScatterCreate()

### Level

intermediate

### Location

src/vec/is/sf/../../../../include/petscsftypes.h

### Examples

src/vec/is/sf/examples/tutorials/ex1.c.html
src/vec/is/sf/examples/tutorials/ex2.c.html

### Implementations

_p_PetscSF in include/petsc/private/sfimpl.h
Index of all PetscSF routines
Table of Contents for all manual pages
Index of all manual pages