PetscSFFetchAndOpEnd#
end operation started in matching call to PetscSFFetchAndOpBegin() or PetscSFFetchAndOpWithMemTypeBegin() to fetch values from roots and update atomically by applying operation using my leaf value
Synopsis#
#include "petscsf.h"
PetscErrorCode PetscSFFetchAndOpEnd(PetscSF sf, MPI_Datatype unit, void *rootdata, const void *leafdata, void *leafupdate, MPI_Op op)
Collective
Input Parameters#
sf - star forest
unit - data type
leafdata - leaf values to use in reduction
op - operation to use for reduction
Output Parameters#
rootdata - root values to be updated, input state is seen by first process to perform an update
leafupdate - state at each leaf’s respective root immediately prior to my atomic update
See Also#
PetscSF, PetscSFComputeDegreeEnd(), PetscSFReduceEnd(), PetscSFSetGraph(), PetscSFFetchAndOpBegin(), PetscSFFetchAndOpWithMemTypeBegin()
Level#
advanced
Location#
Examples#
Implementations#
PetscSFFetchAndOpEnd_Allgatherv() in src/vec/is/sf/impls/basic/allgatherv/sfallgatherv.c
PetscSFFetchAndOpEnd_Basic() in src/vec/is/sf/impls/basic/sfbasic.c
PetscSFFetchAndOpEnd_Window() in src/vec/is/sf/impls/window/sfwindow.c
Index of all PetscSF routines
Table of Contents for all manual pages
Index of all manual pages