PetscSFNode#
specifier of owner and index
Synopsis#
typedef struct {
PetscInt rank; /* Rank of owner */
PetscInt index; /* Index of node on rank */
} PetscSFNode;
Sample Usage#
PetscSFNode *remote;
PetscCall(PetscMalloc1(nleaves,&remote));
for (i=0; i<size; i++) {
remote[i].rank = i;
remote[i].index = rank;
}
Sample Fortran Usage#
type(PetscSFNode) remote(6)
remote(1)%rank = modulo(rank+size-1,size)
remote(1)%index = 1 * stride
Notes#
Use MPIU_SF_NODE
when performing MPI operations on arrays of PetscSFNode
Generally the values of rank
should be in and the value of index
greater than or equal to 0, but there are some situations that violate this.
See Also#
Level#
beginner
Location#
Examples#
src/ts/tutorials/ex11_sa.c
src/vec/is/sf/tutorials/ex3.c
src/vec/is/sf/tutorials/ex1.c
src/dm/tutorials/swarm_ex3.c
src/vec/is/sf/tutorials/ex2.c
Index of all PetscSF routines
Table of Contents for all manual pages
Index of all manual pages