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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
/*
*
* (C) 2003 by Argonne National Laboratory.
* See COPYRIGHT in top-level directory.
*/
#include "mpi.h"
#include <stdio.h>
#include "mpitest.h"
/*
static char MTEST_Descrip[] = "Accumulate/replace with Post/Start/Complete/Wait";
*/
int main(int argc, char *argv[])
{
int errs = 0, err;
int rank, size, source, dest;
int minsize = 2, count;
MPI_Comm comm;
MPI_Win win;
MPI_Aint extent;
MPI_Group wingroup, neighbors;
MTestDatatype sendtype, recvtype;
MTest_Init(&argc, &argv);
/* The following illustrates the use of the routines to
* run through a selection of communicators and datatypes.
* Use subsets of these for tests that do not involve combinations
* of communicators, datatypes, and counts of datatypes */
while (MTestGetIntracommGeneral(&comm, minsize, 1)) {
if (comm == MPI_COMM_NULL)
continue;
/* Determine the sender and receiver */
MPI_Comm_rank(comm, &rank);
MPI_Comm_size(comm, &size);
source = 0;
dest = size - 1;
MTEST_DATATYPE_FOR_EACH_COUNT(count) {
while (MTestGetDatatypes(&sendtype, &recvtype, count)) {
/* Make sure that everyone has a recv buffer */
recvtype.InitBuf(&recvtype);
MPI_Type_extent(recvtype.datatype, &extent);
MPI_Win_create(recvtype.buf, recvtype.count * extent,
(int) extent, MPI_INFO_NULL, comm, &win);
MPI_Win_get_group(win, &wingroup);
if (rank == source) {
/* To improve reporting of problems about operations, we
* change the error handler to errors return */
MPI_Win_set_errhandler(win, MPI_ERRORS_RETURN);
sendtype.InitBuf(&sendtype);
/* Neighbor is dest only */
MPI_Group_incl(wingroup, 1, &dest, &neighbors);
err = MPI_Win_start(neighbors, 0, win);
if (err) {
errs++;
if (errs < 10) {
MTestPrintError(err);
}
}
MPI_Group_free(&neighbors);
err = MPI_Accumulate(sendtype.buf, sendtype.count,
sendtype.datatype, dest, 0,
recvtype.count, recvtype.datatype, MPI_REPLACE, win);
if (err) {
errs++;
MTestPrintError(err);
}
err = MPI_Win_complete(win);
if (err) {
errs++;
if (errs < 10) {
MTestPrintError(err);
}
}
}
else if (rank == dest) {
MPI_Group_incl(wingroup, 1, &source, &neighbors);
MPI_Win_post(neighbors, 0, win);
MPI_Group_free(&neighbors);
MPI_Win_wait(win);
/* This should have the same effect, in terms of
* transfering data, as a send/recv pair */
err = MTestCheckRecv(0, &recvtype);
if (err) {
errs += errs;
}
}
else {
/* Nothing; the other processes need not call any
* MPI routines */
;
}
MPI_Win_free(&win);
MTestFreeDatatype(&sendtype);
MTestFreeDatatype(&recvtype);
MPI_Group_free(&wingroup);
}
}
MTestFreeComm(&comm);
}
MTest_Finalize(errs);
MPI_Finalize();
return 0;
}
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