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.

See Also

PetscSFCreate(), VecScatter, VecScatterCreate()

Level

intermediate

Location

include/petscsftypes.h

Examples

src/vec/is/sf/tutorials/ex1.c
src/vec/is/sf/tutorials/ex2.c
src/vec/is/sf/tutorials/ex3.c

Implementations

_p_PetscSF in include/petsc/private/sfimpl.h

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