petsc-3.7.1 2016-05-15
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PetscSFFetchAndOpEnd

end operation started in matching call to PetscSFFetchAndOpBegin() 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 Many br

Input Arguments

sf - star forest Many br
unit - data type Many br
leafdata - leaf values to use in reduction Many br
op - operation to use for reduction Many br

Output Arguments

rootdata - root values to be updated, input state is seen by first process to perform an update Many br
leafupdate - state at each leaf's respective root immediately prior to my atomic update Many br

Many br

See Also

PetscSFComputeDegreeEnd(), PetscSFReduceEnd(), PetscSFSetGraph()

Level:advanced
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