+++ /dev/null
-C
-C second - test program that sends an array of floats from the first process
-C of a group to the last, using send and recv
-C
-C
- program main
- include 'mpif.h'
-C
- integer rank, size, to, from, tag, count, i, ierr
- integer src, dest
- integer st_source, st_tag, st_count
-C MPI_Status status
- integer status(MPI_STATUS_SIZE)
- double precision data(100)
-
- call MPI_INIT( ierr )
-C print *, 'about to call comm rank'
- call MPI_COMM_RANK( MPI_COMM_WORLD, rank, ierr )
-C print *, rank, 'about to call comm size'
- call MPI_COMM_SIZE( MPI_COMM_WORLD, size, ierr )
- print *, 'Process ', rank, ' of ', size, ' is alive'
-C
-C src = size - 1
-C dest = 0
- dest = size - 1
- src = 0
-C
- if (rank .eq. src) then
- to = dest
- count = 10
- tag = 2001
- do 10 i=1, 10
- data(i) = i
- 10 continue
- call MPI_SEND( data, count, MPI_DOUBLE_PRECISION, to, tag,
- & MPI_COMM_WORLD, ierr )
- print *, rank, ' sent'
- print *, (data(i),i=1,10)
- elseif (rank .eq. dest) then
- tag = MPI_ANY_TAG
- count = 10
- from = MPI_ANY_SOURCE
- call MPI_RECV(data, count, MPI_DOUBLE_PRECISION, from, tag,
- & MPI_COMM_WORLD, status, ierr )
-
- call MPI_GET_COUNT( status, MPI_DOUBLE_PRECISION,
- & st_count, ierr )
- st_source = status(MPI_SOURCE)
- st_tag = status(MPI_TAG)
-c
- print *, 'Status info: source = ', st_source,
- & ' tag = ', st_tag, ' count = ', st_count
- print *, rank, ' received', (data(i),i=1,10)
- endif
-
- call MPI_FINALIZE( ierr )
- print *, 'Process ', rank, ' exiting'
- end
-
