petsc-3.4.5 2014-06-29

PetscSFReduceEnd

 end a reduction operation started with PetscSFReduceBegin()

Synopsis

#include "petscsf.h" 
PetscErrorCode PetscSFReduceEnd(PetscSF sf,MPI_Datatype unit,const void *leafdata,void *rootdata,MPI_Op op)
Collective

Input Arguments

sf - star forest
unit - data type
leafdata - values to reduce
op - reduction operation

Output Arguments

rootdata -result of reduction of values from all leaves of each root

See Also

PetscSFSetGraph(), PetscSFBcastEnd()

Level:intermediate
Location:src/vec/is/sf/interface/sf.c
Index of all PetscSF routines
Table of Contents for all manual pages
Index of all manual pages

Examples

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