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io_new.f90
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module decomp_2d_io
use decomp_2d
use MPI
implicit none
private ! Make everything private unless declared public
public :: decomp_2d_write_one, decomp_2d_read_one, &
decomp_2d_write_var, decomp_2d_read_var, &
decomp_2d_write_plane, decomp_2d_write_every
! Generic interface to handle multiple data types
interface decomp_2d_write_one
module procedure mpiio_write_real
module procedure mpiio_write_complex
module procedure mpiio_write_real_decomp
module procedure mpiio_write_complex_decomp
end interface
interface decomp_2d_read_one
module procedure mpiio_read_real
! module procedure mpiio_read_complex
! module procedure mpiio_read_real_decomp
end interface decomp_2d_read_one
interface decomp_2d_write_var
module procedure write_var ! write a variable of default global size
module procedure write_var_decomp ! of specified global size
end interface
interface decomp_2d_read_var
module procedure read_var ! write a variable of default global size
module procedure read_var_decomp ! of specified global size
end interface
interface decomp_2d_write_plane
module procedure write_plane_3d
module procedure write_plane_2d
end interface
interface decomp_2d_write_every
module procedure write_every
end interface
contains
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! Using MPI-IO library to write a single 3D array to a file
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
subroutine mpiio_write_real(nx,ny,nz,ipencil,var,filename)
implicit none
integer, intent(IN) :: nx,ny,nz
integer, intent(IN) :: ipencil !(x-pencil=1; y-pencil=2; z-pencil=3)
real(mytype), dimension(:,:,:), intent(IN) :: var
character(len=*) :: filename
integer (kind=MPI_OFFSET_KIND) :: filesize, disp
integer, dimension(3) :: sizes, subsizes, starts
integer :: i,j,k, ierror, newtype, fh
sizes(1) = nx
sizes(2) = ny
sizes(3) = nz
if (ipencil == 1) then
subsizes(1) = xsize(1)
subsizes(2) = xsize(2)
subsizes(3) = xsize(3)
starts(1) = xstart(1)-1 ! 0-based index
starts(2) = xstart(2)-1
starts(3) = xstart(3)-1
else if (ipencil == 2) then
subsizes(1) = ysize(1)
subsizes(2) = ysize(2)
subsizes(3) = ysize(3)
starts(1) = ystart(1)-1
starts(2) = ystart(2)-1
starts(3) = ystart(3)-1
else if (ipencil == 3) then
subsizes(1) = zsize(1)
subsizes(2) = zsize(2)
subsizes(3) = zsize(3)
starts(1) = zstart(1)-1
starts(2) = zstart(2)-1
starts(3) = zstart(3)-1
endif
call MPI_TYPE_CREATE_SUBARRAY(3, sizes, subsizes, starts, &
MPI_ORDER_FORTRAN, real_type, newtype, ierror)
call MPI_TYPE_COMMIT(newtype,ierror)
call MPI_FILE_OPEN(MPI_COMM_WORLD, filename, &
MPI_MODE_CREATE+MPI_MODE_WRONLY, MPI_INFO_NULL, &
fh, ierror)
filesize = 0_MPI_OFFSET_KIND
call MPI_FILE_SET_SIZE(fh,filesize,ierror) ! guarantee overwriting
disp = 0_MPI_OFFSET_KIND
call MPI_FILE_SET_VIEW(fh,disp,MPI_INTEGER, &
newtype,'native',MPI_INFO_NULL,ierror)
call MPI_FILE_WRITE_ALL(fh, var, &
subsizes(1)*subsizes(2)*subsizes(3), &
real_type, MPI_STATUS_IGNORE, ierror)
call MPI_FILE_CLOSE(fh,ierror)
call MPI_TYPE_FREE(newtype,ierror)
return
end subroutine mpiio_write_real
subroutine mpiio_write_real_decomp(decomp,ipencil,var,filename)
implicit none
TYPE(DECOMP_INFO), intent(IN) :: decomp
integer, intent(IN) :: ipencil !(x-pencil=1; y-pencil=2; z-pencil=3)
real(mytype), dimension(:,:,:), intent(IN) :: var
character(len=*) :: filename
integer (kind=MPI_OFFSET_KIND) :: filesize, disp
integer, dimension(3) :: sizes, subsizes, starts
integer :: i,j,k, ierror, newtype, fh
sizes(1) = decomp%xsz(1)
sizes(2) = decomp%ysz(2)
sizes(3) = decomp%zsz(3)
if (ipencil == 1) then
subsizes(1) = decomp%xsz(1)
subsizes(2) = decomp%xsz(2)
subsizes(3) = decomp%xsz(3)
starts(1) = decomp%xst(1)-1 ! 0-based index
starts(2) = decomp%xst(2)-1
starts(3) = decomp%xst(3)-1
else if (ipencil == 2) then
subsizes(1) = decomp%ysz(1)
subsizes(2) = decomp%ysz(2)
subsizes(3) = decomp%ysz(3)
starts(1) = decomp%yst(1)-1
starts(2) = decomp%yst(2)-1
starts(3) = decomp%yst(3)-1
else if (ipencil == 3) then
subsizes(1) = decomp%zsz(1)
subsizes(2) = decomp%zsz(2)
subsizes(3) = decomp%zsz(3)
starts(1) = decomp%zst(1)-1
starts(2) = decomp%zst(2)-1
starts(3) = decomp%zst(3)-1
endif
call MPI_TYPE_CREATE_SUBARRAY(3, sizes, subsizes, starts, &
MPI_ORDER_FORTRAN, real_type, newtype, ierror)
call MPI_TYPE_COMMIT(newtype,ierror)
call MPI_FILE_OPEN(MPI_COMM_WORLD, filename, &
MPI_MODE_CREATE+MPI_MODE_WRONLY, MPI_INFO_NULL, &
fh, ierror)
filesize = 0_MPI_OFFSET_KIND
call MPI_FILE_SET_SIZE(fh,filesize,ierror) ! guarantee overwriting
disp = 0_MPI_OFFSET_KIND
call MPI_FILE_SET_VIEW(fh,disp,MPI_INTEGER, &
newtype,'native',MPI_INFO_NULL,ierror)
call MPI_FILE_WRITE_ALL(fh, var, &
subsizes(1)*subsizes(2)*subsizes(3), &
real_type, MPI_STATUS_IGNORE, ierror)
call MPI_FILE_CLOSE(fh,ierror)
call MPI_TYPE_FREE(newtype,ierror)
return
end subroutine mpiio_write_real_decomp
subroutine mpiio_write_complex(nx,ny,nz,ipencil,var,filename)
implicit none
integer, intent(IN) :: nx,ny,nz
integer, intent(IN) :: ipencil !(x-pencil=1; y-pencil=2; z-pencil=3)
complex(mytype), dimension(:,:,:), intent(IN) :: var
character(len=*) :: filename
integer (kind=MPI_OFFSET_KIND) :: filesize, disp
integer, dimension(3) :: sizes, subsizes, starts
integer :: i,j,k, ierror, newtype, fh
sizes(1) = nx
sizes(2) = ny
sizes(3) = nz
if (ipencil == 1) then
subsizes(1) = xsize(1)
subsizes(2) = xsize(2)
subsizes(3) = xsize(3)
starts(1) = xstart(1)-1 ! 0-based index
starts(2) = xstart(2)-1
starts(3) = xstart(3)-1
else if (ipencil == 2) then
subsizes(1) = ysize(1)
subsizes(2) = ysize(2)
subsizes(3) = ysize(3)
starts(1) = ystart(1)-1
starts(2) = ystart(2)-1
starts(3) = ystart(3)-1
else if (ipencil == 3) then
subsizes(1) = zsize(1)
subsizes(2) = zsize(2)
subsizes(3) = zsize(3)
starts(1) = zstart(1)-1
starts(2) = zstart(2)-1
starts(3) = zstart(3)-1
endif
call MPI_TYPE_CREATE_SUBARRAY(3, sizes, subsizes, starts, &
MPI_ORDER_FORTRAN, complex_type, newtype, ierror)
call MPI_TYPE_COMMIT(newtype,ierror)
call MPI_FILE_OPEN(MPI_COMM_WORLD, filename, &
MPI_MODE_CREATE+MPI_MODE_WRONLY, MPI_INFO_NULL, &
fh, ierror)
filesize = 0_MPI_OFFSET_KIND
call MPI_FILE_SET_SIZE(fh,filesize,ierror) ! guarantee overwriting
disp = 0_MPI_OFFSET_KIND
call MPI_FILE_SET_VIEW(fh,disp,MPI_INTEGER, &
newtype,'native',MPI_INFO_NULL,ierror)
call MPI_FILE_WRITE_ALL(fh, var, &
subsizes(1)*subsizes(2)*subsizes(3), &
complex_type, MPI_STATUS_IGNORE, ierror)
call MPI_FILE_CLOSE(fh,ierror)
call MPI_TYPE_FREE(newtype,ierror)
return
end subroutine mpiio_write_complex
subroutine mpiio_write_complex_decomp(decomp,ipencil,var,filename)
implicit none
TYPE(DECOMP_INFO), intent(IN) :: decomp
integer, intent(IN) :: ipencil !(x-pencil=1; y-pencil=2; z-pencil=3)
complex(mytype), dimension(:,:,:), intent(IN) :: var
character(len=*) :: filename
integer (kind=MPI_OFFSET_KIND) :: filesize, disp
integer, dimension(3) :: sizes, subsizes, starts
integer :: i,j,k, ierror, newtype, fh
sizes(1) = decomp%xsz(1)
sizes(2) = decomp%ysz(2)
sizes(3) = decomp%zsz(3)
if (ipencil == 1) then
subsizes(1) = decomp%xsz(1)
subsizes(2) = decomp%xsz(2)
subsizes(3) = decomp%xsz(3)
starts(1) = decomp%xst(1)-1 ! 0-based index
starts(2) = decomp%xst(2)-1
starts(3) = decomp%xst(3)-1
else if (ipencil == 2) then
subsizes(1) = decomp%ysz(1)
subsizes(2) = decomp%ysz(2)
subsizes(3) = decomp%ysz(3)
starts(1) = decomp%yst(1)-1
starts(2) = decomp%yst(2)-1
starts(3) = decomp%yst(3)-1
else if (ipencil == 3) then
subsizes(1) = decomp%zsz(1)
subsizes(2) = decomp%zsz(2)
subsizes(3) = decomp%zsz(3)
starts(1) = decomp%zst(1)-1
starts(2) = decomp%zst(2)-1
starts(3) = decomp%zst(3)-1
endif
call MPI_TYPE_CREATE_SUBARRAY(3, sizes, subsizes, starts, &
MPI_ORDER_FORTRAN, complex_type, newtype, ierror)
call MPI_TYPE_COMMIT(newtype,ierror)
call MPI_FILE_OPEN(MPI_COMM_WORLD, filename, &
MPI_MODE_CREATE+MPI_MODE_WRONLY, MPI_INFO_NULL, &
fh, ierror)
filesize = 0_MPI_OFFSET_KIND
call MPI_FILE_SET_SIZE(fh,filesize,ierror) ! guarantee overwriting
disp = 0_MPI_OFFSET_KIND
call MPI_FILE_SET_VIEW(fh,disp,MPI_INTEGER, &
newtype,'native',MPI_INFO_NULL,ierror)
call MPI_FILE_WRITE_ALL(fh, var, &
subsizes(1)*subsizes(2)*subsizes(3), &
complex_type, MPI_STATUS_IGNORE, ierror)
call MPI_FILE_CLOSE(fh,ierror)
call MPI_TYPE_FREE(newtype,ierror)
return
end subroutine mpiio_write_complex_decomp
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! Using MPI-IO library to read from a file a single 3D array
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
subroutine mpiio_read_real(nx,ny,nz,ipencil,var,filename)
implicit none
integer, intent(IN) :: nx,ny,nz
integer, intent(IN) :: ipencil !(x-pencil=1; y-pencil=2; z-pencil=3)
real(mytype), dimension(:,:,:), intent(OUT) :: var
character(len=*) :: filename
integer (kind=MPI_OFFSET_KIND) :: filesize, disp
integer, dimension(3) :: sizes, subsizes, starts
integer :: i,j,k, ierror, newtype, fh
sizes(1) = nx
sizes(2) = ny
sizes(3) = nz
if (ipencil == 1) then
subsizes(1) = xsize(1)
subsizes(2) = xsize(2)
subsizes(3) = xsize(3)
starts(1) = xstart(1)-1 ! 0-based index
starts(2) = xstart(2)-1
starts(3) = xstart(3)-1
else if (ipencil == 2) then
subsizes(1) = ysize(1)
subsizes(2) = ysize(2)
subsizes(3) = ysize(3)
starts(1) = ystart(1)-1
starts(2) = ystart(2)-1
starts(3) = ystart(3)-1
else if (ipencil == 3) then
subsizes(1) = zsize(1)
subsizes(2) = zsize(2)
subsizes(3) = zsize(3)
starts(1) = zstart(1)-1
starts(2) = zstart(2)-1
starts(3) = zstart(3)-1
endif
call MPI_TYPE_CREATE_SUBARRAY(3, sizes, subsizes, starts, &
MPI_ORDER_FORTRAN, real_type, newtype, ierror)
call MPI_TYPE_COMMIT(newtype,ierror)
call MPI_FILE_OPEN(MPI_COMM_WORLD, filename, &
MPI_MODE_RDONLY, MPI_INFO_NULL, &
fh, ierror)
call MPI_FILE_SET_VIEW(fh,disp,MPI_INTEGER, &
newtype,'native',MPI_INFO_NULL,ierror)
call MPI_FILE_READ_ALL(fh, var, &
subsizes(1)*subsizes(2)*subsizes(3), &
real_type, MPI_STATUS_IGNORE, ierror)
call MPI_FILE_CLOSE(fh,ierror)
call MPI_TYPE_FREE(newtype,ierror)
return
end subroutine mpiio_read_real
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! Write a 3D array to a big MPI-IO file, starting from
! displacement 'disp'; 'disp' will be updated at end to prepare
! next writing.
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
subroutine write_var(fh,disp,nx,ny,nz,ipencil,var)
implicit none
integer, intent(IN) :: fh ! file handle
integer, intent(IN) :: nx,ny,nz ! global size
integer, intent(IN) :: ipencil ! pencil orientation
real(mytype), dimension(:,:,:), &
intent(IN) :: var ! distributed 3D data array
integer(KIND=MPI_OFFSET_KIND), &
intent(INOUT) :: disp ! displacement
integer, dimension(3) :: sizes, subsizes, starts
integer :: i,j,k, ierror, newtype
! Create file type and set file view
sizes(1) = nx
sizes(2) = ny
sizes(3) = nz
if (ipencil == 1) then
subsizes(1) = xsize(1)
subsizes(2) = xsize(2)
subsizes(3) = xsize(3)
starts(1) = xstart(1)-1 ! 0-based index
starts(2) = xstart(2)-1
starts(3) = xstart(3)-1
else if (ipencil == 2) then
subsizes(1) = ysize(1)
subsizes(2) = ysize(2)
subsizes(3) = ysize(3)
starts(1) = ystart(1)-1
starts(2) = ystart(2)-1
starts(3) = ystart(3)-1
else if (ipencil == 3) then
subsizes(1) = zsize(1)
subsizes(2) = zsize(2)
subsizes(3) = zsize(3)
starts(1) = zstart(1)-1
starts(2) = zstart(2)-1
starts(3) = zstart(3)-1
endif
call MPI_TYPE_CREATE_SUBARRAY(3, sizes, subsizes, starts, &
MPI_ORDER_FORTRAN, real_type, newtype, ierror)
call MPI_TYPE_COMMIT(newtype,ierror)
call MPI_FILE_SET_VIEW(fh,disp,MPI_INTEGER, &
newtype,'native',MPI_INFO_NULL,ierror)
call MPI_FILE_WRITE_ALL(fh, var, &
subsizes(1)*subsizes(2)*subsizes(3), &
real_type, MPI_STATUS_IGNORE, ierror)
call MPI_TYPE_FREE(newtype,ierror)
! update displacement for next write
disp = disp + nx*ny*nz*mytype
return
end subroutine write_var
subroutine write_var_decomp(fh,disp,decomp,ipencil,var)
implicit none
integer, intent(IN) :: fh ! file handle
TYPE(DECOMP_INFO), intent(IN) :: decomp
integer, intent(IN) :: ipencil ! pencil orientation
real(mytype), dimension(:,:,:), &
intent(IN) :: var ! distributed 3D data array
integer(KIND=MPI_OFFSET_KIND), &
intent(INOUT) :: disp ! displacement
integer, dimension(3) :: sizes, subsizes, starts
integer :: i,j,k, ierror, newtype
! Create file type and set file view
sizes(1) = decomp%xsz(1)
sizes(2) = decomp%ysz(2)
sizes(3) = decomp%zsz(3)
if (ipencil == 1) then
subsizes(1) = decomp%xsz(1)
subsizes(2) = decomp%xsz(2)
subsizes(3) = decomp%xsz(3)
starts(1) = decomp%xst(1)-1 ! 0-based index
starts(2) = decomp%xst(2)-1
starts(3) = decomp%xst(3)-1
else if (ipencil == 2) then
subsizes(1) = decomp%ysz(1)
subsizes(2) = decomp%ysz(2)
subsizes(3) = decomp%ysz(3)
starts(1) = decomp%yst(1)-1
starts(2) = decomp%yst(2)-1
starts(3) = decomp%yst(3)-1
else if (ipencil == 3) then
subsizes(1) = decomp%zsz(1)
subsizes(2) = decomp%zsz(2)
subsizes(3) = decomp%zsz(3)
starts(1) = decomp%zst(1)-1
starts(2) = decomp%zst(2)-1
starts(3) = decomp%zst(3)-1
endif
call MPI_TYPE_CREATE_SUBARRAY(3, sizes, subsizes, starts, &
MPI_ORDER_FORTRAN, real_type, newtype, ierror)
call MPI_TYPE_COMMIT(newtype,ierror)
call MPI_FILE_SET_VIEW(fh,disp,MPI_INTEGER, &
newtype,'native',MPI_INFO_NULL,ierror)
call MPI_FILE_WRITE_ALL(fh, var, &
subsizes(1)*subsizes(2)*subsizes(3), &
real_type, MPI_STATUS_IGNORE, ierror)
call MPI_TYPE_FREE(newtype,ierror)
! update displacement for next write
disp = disp + sizes(1)*sizes(2)*sizes(3)*mytype
return
end subroutine write_var_decomp
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! Read a 3D array from a big MPI-IO file, starting from
! displacement 'disp'; 'disp' will be updated at end to prepare
! next reading.
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
subroutine read_var(fh,disp,nx,ny,nz,ipencil,var)
implicit none
integer, intent(IN) :: fh ! file handle
integer, intent(IN) :: nx,ny,nz ! global size
integer, intent(IN) :: ipencil ! pencil orientation
real(mytype), dimension(:,:,:), &
intent(INOUT) :: var ! distributed 3D data array
integer(KIND=MPI_OFFSET_KIND), &
intent(INOUT) :: disp ! displacement
integer, dimension(3) :: sizes, subsizes, starts
integer :: i,j,k, ierror, newtype
! Create file type and set file view
sizes(1) = nx
sizes(2) = ny
sizes(3) = nz
if (ipencil == 1) then
subsizes(1) = xsize(1)
subsizes(2) = xsize(2)
subsizes(3) = xsize(3)
starts(1) = xstart(1)-1 ! 0-based index
starts(2) = xstart(2)-1
starts(3) = xstart(3)-1
else if (ipencil == 2) then
subsizes(1) = ysize(1)
subsizes(2) = ysize(2)
subsizes(3) = ysize(3)
starts(1) = ystart(1)-1
starts(2) = ystart(2)-1
starts(3) = ystart(3)-1
else if (ipencil == 3) then
subsizes(1) = zsize(1)
subsizes(2) = zsize(2)
subsizes(3) = zsize(3)
starts(1) = zstart(1)-1
starts(2) = zstart(2)-1
starts(3) = zstart(3)-1
endif
call MPI_TYPE_CREATE_SUBARRAY(3, sizes, subsizes, starts, &
MPI_ORDER_FORTRAN, real_type, newtype, ierror)
call MPI_TYPE_COMMIT(newtype,ierror)
call MPI_FILE_SET_VIEW(fh,disp,MPI_INTEGER, &
newtype,'native',MPI_INFO_NULL,ierror)
call MPI_FILE_READ_ALL(fh, var, &
subsizes(1)*subsizes(2)*subsizes(3), &
real_type, MPI_STATUS_IGNORE, ierror)
call MPI_TYPE_FREE(newtype,ierror)
! update displacement for next write
disp = disp + nx*ny*nz*mytype
return
end subroutine read_var
subroutine read_var_decomp(fh,disp,decomp,ipencil,var)
implicit none
integer, intent(IN) :: fh ! file handle
TYPE(DECOMP_INFO), intent(IN) :: decomp
integer, intent(IN) :: ipencil ! pencil orientation
real(mytype), dimension(:,:,:), &
intent(INOUT) :: var ! distributed 3D data array
integer(KIND=MPI_OFFSET_KIND), &
intent(INOUT) :: disp ! displacement
integer, dimension(3) :: sizes, subsizes, starts
integer :: i,j,k, ierror, newtype
! Create file type and set file view
sizes(1) = decomp%xsz(1)
sizes(2) = decomp%ysz(2)
sizes(3) = decomp%zsz(3)
if (ipencil == 1) then
subsizes(1) = decomp%xsz(1)
subsizes(2) = decomp%xsz(2)
subsizes(3) = decomp%xsz(3)
starts(1) = decomp%xst(1)-1 ! 0-based index
starts(2) = decomp%xst(2)-1
starts(3) = decomp%xst(3)-1
else if (ipencil == 2) then
subsizes(1) = decomp%ysz(1)
subsizes(2) = decomp%ysz(2)
subsizes(3) = decomp%ysz(3)
starts(1) = decomp%yst(1)-1
starts(2) = decomp%yst(2)-1
starts(3) = decomp%yst(3)-1
else if (ipencil == 3) then
subsizes(1) = decomp%zsz(1)
subsizes(2) = decomp%zsz(2)
subsizes(3) = decomp%zsz(3)
starts(1) = decomp%zst(1)-1
starts(2) = decomp%zst(2)-1
starts(3) = decomp%zst(3)-1
endif
call MPI_TYPE_CREATE_SUBARRAY(3, sizes, subsizes, starts, &
MPI_ORDER_FORTRAN, real_type, newtype, ierror)
call MPI_TYPE_COMMIT(newtype,ierror)
call MPI_FILE_SET_VIEW(fh,disp,MPI_INTEGER, &
newtype,'native',MPI_INFO_NULL,ierror)
call MPI_FILE_READ_ALL(fh, var, &
subsizes(1)*subsizes(2)*subsizes(3), &
real_type, MPI_STATUS_IGNORE, ierror)
call MPI_TYPE_FREE(newtype,ierror)
! update displacement for next write
disp = disp + sizes(1)*sizes(2)*sizes(3)*mytype
return
end subroutine read_var_decomp
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! Write a 2D slice of the 3D data to a file
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
subroutine write_plane_3d(ipencil,var,iplane,n,filename)
integer, intent(IN) :: ipencil !(x-pencil=1; y-pencil=2; z-pencil=3)
real(mytype), dimension(:,:,:), intent(IN) :: var
integer, intent(IN) :: iplane !(x-plane=1; y-plane=2; z-plane=3)
integer, intent(IN) :: n ! which plane to write (global coordinate)
character(len=*) :: filename
real(mytype), allocatable, dimension(:,:,:) :: wk, wk2
real(mytype), allocatable, dimension(:,:,:) :: wk2d
integer (kind=MPI_OFFSET_KIND) :: filesize, disp
integer, dimension(3) :: sizes, subsizes, starts
integer :: i,j,k, ierror, newtype, fh
! if needed transpose 3D data so that all mpi rank participate I/O
if (iplane==1) then
allocate(wk(xsize(1),xsize(2),xsize(3)))
if (ipencil==1) then
wk = var
else if (ipencil==2) then
call transpose_y_to_x(var,wk)
else if (ipencil==3) then
allocate(wk2(ysize(1),ysize(2),ysize(3)))
call transpose_z_to_y(var,wk2)
call transpose_y_to_x(wk2,wk)
deallocate(wk2)
end if
allocate(wk2d(1,xsize(2),xsize(3)))
do k=1,xsize(3)
do j=1,xsize(2)
wk2d(1,j,k)=wk(n,j,k)
end do
end do
sizes(1) = 1
sizes(2) = ysize(2)
sizes(3) = zsize(3)
subsizes(1) = 1
subsizes(2) = xsize(2)
subsizes(3) = xsize(3)
starts(1) = 0
starts(2) = xstart(2)-1
starts(3) = xstart(3)-1
else if (iplane==2) then
allocate(wk(ysize(1),ysize(2),ysize(3)))
if (ipencil==1) then
call transpose_x_to_y(var,wk)
else if (ipencil==2) then
wk = var
else if (ipencil==3) then
call transpose_z_to_y(var,wk)
end if
allocate(wk2d(ysize(1),1,ysize(3)))
do k=1,ysize(3)
do i=1,ysize(1)
wk2d(i,1,k)=wk(i,n,k)
end do
end do
sizes(1) = xsize(1)
sizes(2) = 1
sizes(3) = zsize(3)
subsizes(1) = ysize(1)
subsizes(2) = 1
subsizes(3) = ysize(3)
starts(1) = ystart(1)-1
starts(2) = 0
starts(3) = ystart(3)-1
else if (iplane==3) then
allocate(wk(zsize(1),zsize(2),zsize(3)))
if (ipencil==1) then
allocate(wk2(ysize(1),ysize(2),ysize(3)))
call transpose_x_to_y(var,wk2)
call transpose_y_to_z(wk2,wk)
deallocate(wk2)
else if (ipencil==2) then
call transpose_y_to_z(var,wk)
else if (ipencil==3) then
wk = var
end if
allocate(wk2d(zsize(1),zsize(2),1))
do j=1,zsize(2)
do i=1,zsize(1)
wk2d(i,j,1)=wk(i,j,n)
end do
end do
sizes(1) = xsize(1)
sizes(2) = ysize(2)
sizes(3) = 1
subsizes(1) = zsize(1)
subsizes(2) = zsize(2)
subsizes(3) = 1
starts(1) = zstart(1)-1
starts(2) = zstart(2)-1
starts(3) = 0
end if
call MPI_TYPE_CREATE_SUBARRAY(3, sizes, subsizes, starts, &
MPI_ORDER_FORTRAN, real_type, newtype, ierror)
call MPI_TYPE_COMMIT(newtype,ierror)
call MPI_FILE_OPEN(MPI_COMM_WORLD, filename, &
MPI_MODE_CREATE+MPI_MODE_WRONLY, MPI_INFO_NULL, &
fh, ierror)
filesize = 0_MPI_OFFSET_KIND
call MPI_FILE_SET_SIZE(fh,filesize,ierror) ! guarantee overwriting
disp = 0_MPI_OFFSET_KIND
call MPI_FILE_SET_VIEW(fh,disp,MPI_INTEGER, &
newtype,'native',MPI_INFO_NULL,ierror)
call MPI_FILE_WRITE_ALL(fh, wk2d, &
subsizes(1)*subsizes(2)*subsizes(3), &
real_type, MPI_STATUS_IGNORE, ierror)
call MPI_FILE_CLOSE(fh,ierror)
call MPI_TYPE_FREE(newtype,ierror)
deallocate(wk,wk2d);
return
end subroutine write_plane_3d
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! Write a 2D array to a file
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!************** TO DO ***************
subroutine write_plane_2d(ipencil,var,filename)
integer, intent(IN) :: ipencil !(x-pencil=1; y-pencil=2; z-pencil=3)
real(mytype), dimension(:,:), intent(IN) :: var ! 2D array
character(len=*) :: filename
if (ipencil==1) then
! var should be defined as var(xsize(2)
else if (ipencil==2) then
else if (ipencil==3) then
end if
return
end subroutine write_plane_2d
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! Write 3D array data for every specified mesh point
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
subroutine write_every(ipencil,var,iskip,jskip,kskip,filename, from1)
integer, intent(IN) :: ipencil !(x-pencil=1; y-pencil=2; z-pencil=3)
real(mytype), dimension(:,:,:), intent(IN) :: var
integer, intent(IN) :: iskip,jskip,kskip
character(len=*) :: filename
logical, intent(IN) :: from1 ! .true. - save 1,n+1,2n+1...
! .false. - save n,2n,3n...
real(mytype), allocatable, dimension(:,:,:) :: wk, wk2
integer (kind=MPI_OFFSET_KIND) :: filesize, disp
integer, dimension(3) :: sizes, subsizes, starts
integer :: i,j,k, ierror, newtype, fh, key, color, newcomm
integer, dimension(3) :: xsz,ysz,zsz,xst,yst,zst,xen,yen,zen,skip
! work out the distribution parameters, which may be different from
! the default distribution used by the decomposition library
! For exmample if nx=17 and p_row=4
! distribution is: 4 4 4 5
! If writing from the 1st element
! If saving every 3 points, then 5 points to be saved (17/3)
! default distribution would be 1 1 1 2
! However, 1st block (1-4) contains the 3rd point
! 2nd block (5-8) contains the 6th point
! 3rd block (9-12) contains the 9th and 12th point
! 4th block (13-17) contains then 15th point
! giving a 1 1 2 1 distribution
! So cannot use the base decomposition library for such IO
! If writing from the n-th element (n=?skip)
! If saving every 3 points, then 6 points to be saved
! However, 1st block (1-4) contains the 1st & 4th point
! 2nd block (5-8) contains the 7th point
! 3rd block (9-12) contains the 10th point
! 4th block (13-17) contains then 12th & 15th point
! giving a 1 2 2 1 distribution
skip(1)=iskip
skip(2)=jskip
skip(3)=kskip
do i=1,3
if (from1) then
xst(i) = (xstart(i)+skip(i)-1)/skip(i)
if (mod(xstart(i)+skip(i)-1,skip(i))/=0) xst(i)=xst(i)+1
xen(i) = (xend(i)+skip(i)-1)/skip(i)
else
xst(i) = xstart(i)/skip(i)
if (mod(xstart(i),skip(i))/=0) xst(i)=xst(i)+1
xen(i) = xend(i)/skip(i)
end if
xsz(i) = xen(i)-xst(i)+1
end do
do i=1,3
if (from1) then
yst(i) = (ystart(i)+skip(i)-1)/skip(i)
if (mod(ystart(i)+skip(i)-1,skip(i))/=0) yst(i)=yst(i)+1
yen(i) = (yend(i)+skip(i)-1)/skip(i)
else
yst(i) = ystart(i)/skip(i)
if (mod(ystart(i),skip(i))/=0) yst(i)=yst(i)+1
yen(i) = yend(i)/skip(i)
end if
ysz(i) = yen(i)-yst(i)+1
end do
do i=1,3
if (from1) then
zst(i) = (zstart(i)+skip(i)-1)/skip(i)
if (mod(zstart(i)+skip(i)-1,skip(i))/=0) zst(i)=zst(i)+1
zen(i) = (zend(i)+skip(i)-1)/skip(i)
else
zst(i) = zstart(i)/skip(i)
if (mod(zstart(i),skip(i))/=0) zst(i)=zst(i)+1
zen(i) = zend(i)/skip(i)
end if
zsz(i) = zen(i)-zst(i)+1
end do
! if 'skip' value is large it is possible that some ranks do not
! contain any points to be written. Subarray constructor requires
! nonzero size so it is not possible to use MPI_COMM_WORLD for IO.
! Create a sub communicator for this...
color = 1
key = 0 ! rank order doesn't matter
if (ipencil==1) then
if (xsz(1)==0 .or. xsz(2)==0 .or. xsz(3)==0) then
color = 2
end if
else if (ipencil==2) then
if (ysz(1)==0 .or. ysz(2)==0 .or. ysz(3)==0) then
color = 2
end if
else if (ipencil==3) then
if (zsz(1)==0 .or. zsz(2)==0 .or. zsz(3)==0) then
color = 2
end if
end if
call MPI_COMM_SPLIT(MPI_COMM_WORLD,color,key,newcomm,ierror)
if (color==1) then ! only ranks in this group do IO collectively
! generate subarray information
sizes(1) = xsz(1)
sizes(2) = ysz(2)
sizes(3) = zsz(3)
if (ipencil==1) then
subsizes(1) = xsz(1)
subsizes(2) = xsz(2)
subsizes(3) = xsz(3)
starts(1) = xst(1)-1
starts(2) = xst(2)-1
starts(3) = xst(3)-1
else if (ipencil==2) then
subsizes(1) = ysz(1)
subsizes(2) = ysz(2)
subsizes(3) = ysz(3)
starts(1) = yst(1)-1
starts(2) = yst(2)-1
starts(3) = yst(3)-1
else if (ipencil==3) then
subsizes(1) = zsz(1)
subsizes(2) = zsz(2)
subsizes(3) = zsz(3)
starts(1) = zst(1)-1
starts(2) = zst(2)-1
starts(3) = zst(3)-1
end if
! copy data from original array
! needs a copy of original array in global coordinate
if (ipencil==1) then
allocate(wk(xst(1):xen(1),xst(2):xen(2),xst(3):xen(3)))
allocate(wk2(xstart(1):xend(1),xstart(2):xend(2),xstart(3):xend(3)))
wk2=var
if (from1) then
do k=xst(3),xen(3)
do j=xst(2),xen(2)
do i=xst(1),xen(1)
wk(i,j,k) = wk2((i-1)*iskip+1,(j-1)*jskip+1,(k-1)*kskip+1)
end do
end do
end do
else
do k=xst(3),xen(3)
do j=xst(2),xen(2)
do i=xst(1),xen(1)
wk(i,j,k) = wk2(i*iskip,j*jskip,k*kskip)
end do
end do
end do
end if
else if (ipencil==2) then
allocate(wk(yst(1):yen(1),yst(2):yen(2),yst(3):yen(3)))
allocate(wk2(ystart(1):yend(1),ystart(2):yend(2),ystart(3):yend(3)))
wk2=var
if (from1) then
do k=yst(3),yen(3)
do j=yst(2),yen(2)
do i=yst(1),yen(1)
wk(i,j,k) = wk2((i-1)*iskip+1,(j-1)*jskip+1,(k-1)*kskip+1)
end do
end do
end do
else
do k=yst(3),yen(3)
do j=yst(2),yen(2)
do i=yst(1),yen(1)
wk(i,j,k) = wk2(i*iskip,j*jskip,k*kskip)
end do
end do
end do
end if
else if (ipencil==3) then
allocate(wk(zst(1):zen(1),zst(2):zen(2),zst(3):zen(3)))
allocate(wk2(zstart(1):zend(1),zstart(2):zend(2),zstart(3):zend(3)))
wk2=var
if (from1) then
do k=zst(3),zen(3)
do j=zst(2),zen(2)
do i=zst(1),zen(1)
wk(i,j,k) = wk2((i-1)*iskip+1,(j-1)*jskip+1,(k-1)*kskip+1)
end do
end do
end do
else
do k=zst(3),zen(3)
do j=zst(2),zen(2)
do i=zst(1),zen(1)
wk(i,j,k) = wk2(i*iskip,j*jskip,k*kskip)
end do
end do
end do
end if
end if
deallocate(wk2)
! MPI-IO
call MPI_TYPE_CREATE_SUBARRAY(3, sizes, subsizes, starts, &
MPI_ORDER_FORTRAN, real_type, newtype, ierror)
call MPI_TYPE_COMMIT(newtype,ierror)
call MPI_FILE_OPEN(newcomm, filename, &
MPI_MODE_CREATE+MPI_MODE_WRONLY, MPI_INFO_NULL, &
fh, ierror)
filesize = 0_MPI_OFFSET_KIND
call MPI_FILE_SET_SIZE(fh,filesize,ierror) ! guarantee overwriting
disp = 0_MPI_OFFSET_KIND
call MPI_FILE_SET_VIEW(fh,disp,MPI_INTEGER, &
newtype,'native',MPI_INFO_NULL,ierror)
call MPI_FILE_WRITE_ALL(fh, wk, &
subsizes(1)*subsizes(2)*subsizes(3), &
real_type, MPI_STATUS_IGNORE, ierror)
call MPI_FILE_CLOSE(fh,ierror)
call MPI_TYPE_FREE(newtype,ierror)
deallocate(wk)
end if ! color==1
call MPI_BARRIER(MPI_COMM_WORLD, ierror)
return
end subroutine write_every
end module decomp_2d_io