MPI_Graph_create

--- Makes a new communicator to which topology information has been attached

Input Parameters

comm_old: input communicator without topology (handle)

nnodes: number of nodes in graph (integer)

index: array of integers describing node degrees (see below)

edges: array of integers describing graph edges (see below)

reorder: ranking may be reordered (true ) or not (false ) (logical)

Output Parameter

comm_graph: communicator with graph topology added (handle)

Algorithm

We ignore the periods and reorder info currently.

Synopsis


#include "mpi.h"
int MPI_Graph_create ( comm_old, nnodes, index, edges, reorder, comm_graph )
MPI_Comm  comm_old;
int       nnodes;
int      *index;
int      *edges;
int       reorder;
MPI_Comm *comm_graph;

Location: graph_create.c