1 C -*- Mode: Fortran; -*-
3 C (C) 2003 by Argonne National Laboratory.
4 C See COPYRIGHT in top-level directory.
11 integer left, right, rank, size
13 parameter (nrows=25,ncols=10)
14 integer buf(1:nrows,0:ncols+1)
15 integer comm, group, group2, ans
16 integer nneighbors, nbrs(2), i, j
17 logical mtestGetIntraComm
18 C Include addsize defines asize as an address-sized integer
22 call mtest_init( ierr )
24 call mpi_type_size( MPI_INTEGER, intsize, ierr )
25 do while( mtestGetIntraComm( comm, 2, .false. ) )
26 asize = nrows * (ncols + 2) * intsize
27 call mpi_win_create( buf, asize, intsize * nrows,
28 & MPI_INFO_NULL, comm, win, ierr )
30 C Create the group for the neighbors
31 call mpi_comm_size( comm, size, ierr )
32 call mpi_comm_rank( comm, rank, ierr )
38 nneighbors = nneighbors + 1
39 nbrs(nneighbors) = left
42 if (right .ge. size) then
45 nneighbors = nneighbors + 1
46 nbrs(nneighbors) = right
48 call mpi_comm_group( comm, group, ierr )
49 call mpi_group_incl( group, nneighbors, nbrs, group2, ierr )
50 call mpi_group_free( group, ierr )
52 C Initialize the buffer
59 buf(i,j) = rank * (ncols * nrows) + i + (j-1) * nrows
62 call mpi_win_post( group2, 0, win, ierr )
63 call mpi_win_start( group2, 0, win, ierr )
66 call mpi_put( buf(1,1), nrows, MPI_INTEGER, left, asize,
67 & nrows, MPI_INTEGER, win, ierr )
69 call mpi_put( buf(1,ncols), nrows, MPI_INTEGER, right, asize,
70 & nrows, MPI_INTEGER, win, ierr )
72 call mpi_win_complete( win, ierr )
73 call mpi_win_wait( win, ierr )
76 if (left .ne. MPI_PROC_NULL) then
78 ans = rank * (ncols * nrows) - nrows + i
79 if (buf(i,0) .ne. ans) then
81 if (errs .le. 10) then
82 print *, ' buf(',i,'0) = ', buf(i,0)
87 if (right .ne. MPI_PROC_NULL) then
89 ans = (rank+1) * (ncols * nrows) + i
90 if (buf(i,ncols+1) .ne. ans) then
92 if (errs .le. 10) then
93 print *, ' buf(',i,',',ncols+1,') = ',
99 call mpi_group_free( group2, ierr )
100 call mpi_win_free( win, ierr )
101 call mtestFreeComm( comm )
104 call mtest_finalize( errs )
105 call mpi_finalize( ierr )