! This file created from f77/ext/allocmemf.f with f77tof90 ! -*- Mode: Fortran; -*- ! ! (C) 2004 by Argonne National Laboratory. ! See COPYRIGHT in top-level directory. ! program main use mpi ! ! This program makes use of a common (but not universal; g77 doesn't ! have it) extension: the "Cray" pointer. This allows MPI_Alloc_mem ! to allocate memory and return it to Fortran, where it can be used. ! As this is not standard Fortran, this test is not run by default. ! To run it, build (with a suitable compiler) and run with ! mpiexec -n 1 ./allocmemf ! real a pointer (p,a(100,100)) integer (kind=MPI_ADDRESS_KIND) asize integer ierr, sizeofreal, errs integer i,j ! errs = 0 call mtest_init(ierr) call mpi_type_size( MPI_REAL, sizeofreal, ierr ) ! Make sure we pass in an integer of the correct type asize = sizeofreal * 100 * 100 call mpi_alloc_mem( asize,MPI_INFO_NULL,p,ierr ) do i=1,100 do j=1,100 a(i,j) = -1 enddo enddo a(3,5) = 10.0 call mpi_free_mem( a, ierr ) call mtest_finalize(errs) end