PetscSFScatterBegin#

begin pointwise scatter operation from multi-roots to leaves, to be completed with PetscSFScatterEnd()

Synopsis#

#include "petscsf.h" 
PetscErrorCode PetscSFScatterBegin(PetscSF sf, MPI_Datatype unit, const void *multirootdata, void *leafdata)

Collective

Input Parameters#

sf - star forest
unit - data type
multirootdata - root buffer to send to each leaf, one unit of data per leaf

Output Parameter#

leafdata - leaf data to be update with personal data from each respective root

See Also#

PetscSF, PetscSFComputeDegreeBegin(), PetscSFScatterEnd()

Level#

intermediate

Location#

src/vec/is/sf/interface/sf.c

Examples#

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

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