MPI_Gather

--- Gathers together values from a group of processes

Input Parameters

sendbuf: starting address of send buffer (choice)

sendcount: number of elements in send buffer (integer)

sendtype: data type of send buffer elements (handle)

recvcount: number of elements for any single receive (integer, significant only at root)

recvtype: data type of recv buffer elements (significant only at root) (handle)

root: rank of receiving process (integer)

comm: communicator (handle)

Output Parameter

recvbuf: address of receive buffer (choice, significant only at root)

Synopsis


#include "mpi.h"
int MPI_Gather ( sendbuf, sendcnt, sendtype, recvbuf, recvcount, recvtype, 
   root, comm )
void             *sendbuf;
int               sendcnt;
MPI_Datatype      sendtype;
void             *recvbuf;
int               recvcount;
MPI_Datatype      recvtype;
int               root;
MPI_Comm          comm;

Location: gather.c