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|
! ADIOS is freely available under the terms of the BSD license described
! in the COPYING file in the top level directory of this source distribution.
!
! Copyright (c) 2008 - 2009. UT-BATTELLE, LLC. All rights reserved.
!
!
! GENARRAY
!
! Write an ADIOS BP file from many processor for test purposes.
!
! nx * ny * nz processes write a 3D array, where each process writes an
! ndx * ndy * ndz piece with filling with its rank as integer (4 bytes) value
!
!
! (c) Oak Ridge National Laboratory, 2009
! Author: Norbert Podhorszki
!
module genarray_comm
! arguments
character(len=256) :: outputfile, inputfile
integer :: npx, npy, npz ! # of processors in x-y-z direction
integer :: ndx, ndy, ndz ! size of array per processor
integer :: timesteps ! number of timesteps to write
integer :: sleeptime ! time to sleep between time steps
logical :: common_size ! .true. if common local sizes are given as argument
! .false. if we have to read sizes from a file
integer :: gndx, gndy, gndz ! size of the global array
integer :: offx,offy,offz ! offsets of local array in the global array
real*8, dimension(:,:,:), allocatable :: double_xyz
! MPI variables
integer :: group_comm
integer :: rank, nproc
integer :: ierr
! ADIOS variables
character (len=200) :: group
character (len=200) :: filename
!character (len=6) :: nprocstr
integer*8 :: handle, total_size, group_size, adios_totalsize
real*8 :: start_time, end_time, total_time,gbs,sz
real*8 :: io_start_time, io_end_time, io_total_time
end module genarray_comm
program genarray
use genarray_comm
use adios_write_mod
implicit none
include 'mpif.h'
call MPI_Init (ierr)
call MPI_Comm_dup (MPI_COMM_WORLD, group_comm, ierr)
call MPI_Comm_rank (MPI_COMM_WORLD, rank, ierr)
call MPI_Comm_size (group_comm, nproc , ierr)
call adios_init ("genarray3d.xml", group_comm, ierr)
!call MPI_Barrier (group_comm, ierr)
call processArgs()
if (rank == 0) then
print *,"Output file(s): "//trim(outputfile)//".<step>.bp"
print '(" Process number : ",i0," x ",i0," x ",i0)', npx,npy,npz
if (common_size) then
print '(" Array size per process: ",i0," x ",i0," x ",i0)', ndx,ndy,ndz
else
print *," Array sizes per processes taken from file: "//trim(inputfile)
endif
if (nproc .ne. npx*npy*npz) then
print '(" Error: Number of processors ",i0,"does not match ndx*ndy*ndz=",i0)', nproc, npx*npy*npz
call exit(1)
endif
endif
!write (*,*) 'rank ', rank, "init completed"
!write (nprocstr,'(i0)') nproc
call determineLocalSize()
call determineGlobalSize()
call determineOffsets()
call generateLocalArray()
call writeArray()
! Terminate
call MPI_Barrier (MPI_COMM_WORLD, ierr)
call adios_finalize (rank, ierr)
call MPI_Finalize (ierr)
end program genarray
!!***************************
subroutine determineLocalSize()
use genarray_comm
implicit none
if (common_size) then
! we are done since we know them from argument
else
! have to read from file
print *, "To be implemented: read sizes from file 1"
call exit(2)
endif
end subroutine determineLocalSize
!!***************************
subroutine determineGlobalSize()
use genarray_comm
implicit none
if (common_size) then
gndx = npx * ndx
gndy = npy * ndy
gndz = npz * ndz
else
! have to read from file
print *, "To be implemented: read sizes from file 2"
call exit(2)
endif
end subroutine determineGlobalSize
!!***************************
subroutine determineOffsets()
use genarray_comm
implicit none
integer :: posx, posy, posz ! position index in the array
if (common_size) then
posx = mod(rank, npx) ! 1st dim easy: 0, npx, 2npx... are in the same X position
posy = mod(rank/npx, npy) ! 2nd dim: (0, npx-1) have the same dim (so divide with npx first)
posz = rank/(npx*npy) ! 3rd dim: npx*npy processes belong into one dim
offx = posx * ndx
offy = posy * ndy
offz = posz * ndz
else
! have to read from file
print *, "To be implemented: read sizes from file 3"
call exit(2)
endif
end subroutine determineOffsets
!!***************************
subroutine generateLocalArray()
use genarray_comm
implicit none
integer :: i,j,k
allocate( double_xyz(1:ndx, 1:ndy, 1:ndz) )
do k=1,ndz
do j=1,ndy
do i=1,ndx
double_xyz(i,j,k) = 1.0d0*rank
enddo
enddo
enddo
end subroutine generateLocalArray
!!***************************
subroutine writeArray()
use genarray_comm
use adios_write_mod
implicit none
integer*8 adios_handle, adios_groupsize
integer adios_err
integer :: tstep
character(2) :: mode = "w"
character(len=256) :: outfilename
include 'mpif.h'
if (rank==0) print '("Writing: "," filename ",14x,"size(GB)",4x,"io_time(sec)",6x,"GB/s")'
do tstep=1,timesteps
!if (tstep > 1) mode = "a"
double_xyz = tstep + double_xyz
call MPI_BARRIER(MPI_COMM_WORLD,ierr)
io_start_time = MPI_WTIME()
group = "genarray"
write (outfilename,'(a,".",i3.3,".bp")') trim(outputfile),tstep
call adios_open (adios_handle, group, outfilename, mode, group_comm, adios_err)
adios_groupsize = 0
adios_groupsize = adios_groupsize + 4_8 &
+ 4_8 &
+ 4_8 &
+ 4_8 &
+ 4_8 &
+ 4_8 &
+ 4_8 &
+ 4_8 &
+ 4_8 &
+ 4_8 &
+ 4_8 &
+ 4_8 &
+ 4_8 &
+ 8_8 * (ndx) * (ndy) * (ndz) &
+ 8_8 * (ndx) * (ndy) * (ndz) &
+ 8_8 * (ndx) * (ndy) * (ndz) &
+ 8_8 * (ndx) * (ndy) * (ndz) &
+ 8_8 * (ndx) * (ndy) * (ndz) &
+ 8_8 * (ndx) * (ndy) * (ndz) &
+ 8_8 * (ndx) * (ndy) * (ndz) &
+ 8_8 * (ndx) * (ndy) * (ndz) &
+ 8_8 * (ndx) * (ndy) * (ndz)
call adios_group_size (adios_handle, adios_groupsize, adios_totalsize, adios_err)
call adios_write (adios_handle, "/dimensions/gndx", gndx, adios_err)
call adios_write (adios_handle, "/dimensions/gndy", gndy, adios_err)
call adios_write (adios_handle, "/dimensions/gndz", gndz, adios_err)
call adios_write (adios_handle, "/info/nproc", nproc, adios_err)
call adios_write (adios_handle, "/info/npx", npx, adios_err)
call adios_write (adios_handle, "/info/npy", npy, adios_err)
call adios_write (adios_handle, "/info/npz", npz, adios_err)
call adios_write (adios_handle, "/aux/offx", offx, adios_err)
call adios_write (adios_handle, "/aux/offy", offy, adios_err)
call adios_write (adios_handle, "/aux/offz", offz, adios_err)
call adios_write (adios_handle, "/aux/ndx", ndx, adios_err)
call adios_write (adios_handle, "/aux/ndy", ndy, adios_err)
call adios_write (adios_handle, "/aux/ndz", ndz, adios_err)
call adios_write (adios_handle, "/var/var1", double_xyz, adios_err)
call adios_write (adios_handle, "/var/var2", double_xyz, adios_err)
call adios_write (adios_handle, "/var/var3", double_xyz, adios_err)
call adios_write (adios_handle, "/var/var4", double_xyz, adios_err)
call adios_write (adios_handle, "/var/var5", double_xyz, adios_err)
call adios_write (adios_handle, "/var/var6", double_xyz, adios_err)
call adios_write (adios_handle, "/var/var7", double_xyz, adios_err)
call adios_write (adios_handle, "/var/var8", double_xyz, adios_err)
call adios_write (adios_handle, "/var/var9", double_xyz, adios_err)
call adios_close (adios_handle, adios_err)
call MPI_BARRIER(MPI_COMM_WORLD,ierr)
io_end_time = MPI_WTIME()
io_total_time = io_end_time - io_start_time
sz = adios_totalsize * nproc/1024.d0/1024.d0/1024.d0 !size in GB
gbs = sz/io_total_time
if (rank==0) print '("Writing: ",a20,d12.2,2x,d12.2,2x,d12.3)', outfilename,sz,io_total_time,gbs
if (tstep<timesteps) call sleep(sleeptime)
end do
end subroutine writeArray
!!***************************
subroutine usage()
print *, "Usage: genarray output N M K [infile|nx ny nz timesteps sleeptime]"
print *, "output: name of output file"
print *, "N: number of processes in X dimension"
print *, "M: number of processes in Y dimension"
print *, "K: number of processes in Z dimension"
print *, "nx: local array size in X dimension per processor"
print *, "ny: local array size in Y dimension per processor"
print *, "nz: local array size in Z dimension per processor"
print *, "infile: file that describes nx ny nz for each processor"
print *, "timesteps: the total number of timesteps to output"
print *, "sleeptime: the time to sleep (s)"
end subroutine usage
!!***************************
subroutine processArgs()
use genarray_comm
#ifndef __GFORTRAN__
!#ifndef __GNUC__
interface
integer function iargc()
end function iargc
end interface
!#endif
#endif
character(len=256) :: npx_str, npy_str, npz_str, ndx_str, ndy_str, ndz_str
character(len=256) :: time_str,sleep_str
integer :: numargs
!! process arguments
numargs = iargc()
!print *,"Number of arguments:",numargs
if ( numargs < 5 ) then
call usage()
call exit(1)
endif
call getarg(1, outputfile)
call getarg(2, npx_str)
call getarg(3, npy_str)
call getarg(4, npz_str)
read (npx_str,'(i5)') npx
read (npy_str,'(i5)') npy
read (npz_str,'(i5)') npz
if ( numargs == 5 ) then
call getarg(5, inputfile)
ndx = 0
ndy = 0
ndz = 0
common_size = .false.
else if (numargs == 9) then
call getarg(5, ndx_str)
call getarg(6, ndy_str)
call getarg(7, ndz_str)
read (ndx_str,'(i12)') ndx
read (ndy_str,'(i12)') ndy
read (ndz_str,'(i12)') ndz
inputfile=char(0)
common_size = .true.
call getarg(8, time_str)
call getarg(9, sleep_str)
read (time_str,'(i6)') timesteps
read (sleep_str,'(i6)') sleeptime
else
call usage()
call exit(1)
endif
end subroutine processArgs
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