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program main
use iso_c_binding
use omp_lib
implicit none (type, external)
integer(c_size_t), parameter :: sizeof_int = 4
integer, parameter :: sk = c_size_t
logical, allocatable :: isshared(:)
integer, allocatable :: maxdim(:,:)
integer :: ndev
ndev = omp_get_num_devices()
call init_isshared
call init_maxdim
call one
call two
call three
call four
deallocate(isshared, maxdim)
contains
subroutine init_maxdim
integer :: dev, dev2, r
integer(c_size_t), parameter :: nl = 0
allocate(maxdim(0:ndev,0:ndev))
do dev = 0, ndev
do dev2 = 0, ndev
r = omp_target_memcpy_rect (c_null_ptr, c_null_ptr, nl, &
num_dims=1_c_int, volume=[nl], &
dst_offsets=[nl], src_offsets=[nl], &
dst_dimensions=[nl], src_dimensions=[nl], &
dst_device_num=dev, src_device_num=omp_initial_device)
if (r < 3) stop 1 ! OpenMP requirement
if (r < huge(0_c_int)) stop 2 ! GCC implementation
maxdim(dev2,dev) = r
end do
end do
end subroutine
subroutine init_isshared
integer :: dev
logical :: dev_isshared
allocate(isshared(0:ndev))
do dev = 0, ndev
dev_isshared = .false.
!$omp target device(dev) map(to: dev_isshared)
dev_isshared = .true.
!$omp end target
isshared(dev) = dev_isshared
end do
end subroutine
subroutine one
integer(c_size_t), parameter :: N1 = 30
integer, target :: host_data(N1)
type(c_ptr) :: dev_cptr(0:ndev), cptr, tmp_cptr
integer :: dev, dev2, i, r
do dev = 0, ndev
dev_cptr(dev) = omp_target_alloc (N1*sizeof_int, dev)
if (.not. c_associated (dev_cptr(dev))) stop 11
end do
do i = 1, N1
host_data(i) = i
end do
! copy full array host -> all devices + check value + set per-device value
do dev = 0, ndev
r = omp_target_memcpy_rect (dev_cptr(dev), c_loc(host_data), sizeof_int, &
num_dims=1_c_int, volume=[N1], &
dst_offsets=[0_sk], src_offsets=[0_sk], &
dst_dimensions=[N1], src_dimensions=[N1], &
dst_device_num=dev, src_device_num=omp_initial_device)
if (r /= 0) stop 12
cptr = dev_cptr(dev)
!$omp target device(dev) is_device_ptr(cptr)
block
integer, pointer, contiguous :: fptr(:)
call c_f_pointer(cptr, fptr, [N1])
do i = 1, N1
if (fptr(i) /= i) stop 13
fptr(i) = i*100 + 10000 * (dev+3)
end do
end block
end do
! Test strided data - forth and back - same array sizes
do dev = 0, ndev
do dev2 = 0, ndev
tmp_cptr = omp_target_alloc (N1*sizeof_int, dev)
if (.not. c_associated (tmp_cptr)) stop 14
!$omp target device(dev) is_device_ptr(tmp_cptr)
block
integer, pointer, contiguous :: fptr(:)
call c_f_pointer(tmp_cptr, fptr, [N1])
do i = 1, N1
fptr(i) = i*100 + 10000*(dev+1)
end do
end block
if (N1-17 > N1 - max(12,13)) stop 18
r = omp_target_memcpy_rect (dev_cptr(dev2), tmp_cptr, sizeof_int, &
num_dims=1_c_int, volume=[N1-17], &
dst_offsets=[12_sk], src_offsets=[13_sk], &
dst_dimensions=[N1], src_dimensions=[N1], &
dst_device_num=dev2, src_device_num=dev)
if (r /= 0) stop 15
cptr = dev_cptr(dev2)
!$omp target device(dev2) is_device_ptr(cptr)
block
logical :: checked(N1)
integer, pointer, contiguous :: fptr(:)
call c_f_pointer(cptr, fptr, [N1])
checked = .false.
do i = 1, N1-17
if (fptr(i+12) /= (i+13)*100 + 10000 * (dev+1)) stop 16
checked(i+12) = .true.
end do
! original device value
do i = 1, N1
if (.not. checked(i)) then
if (fptr(i) /= i*100 + 10000 * (dev2+3)) stop 17
end if
end do
end block
call omp_target_free (tmp_cptr, dev)
end do
! reset to original value
do dev2 = 0, ndev
cptr = dev_cptr(dev2)
!$omp target device(dev2) is_device_ptr(cptr)
block
integer, pointer, contiguous :: fptr(:)
call c_f_pointer(cptr, fptr, [N1])
do i = 1, N1
fptr(i) = i*100 + 10000 * (dev2+3)
end do
end block
end do
end do
do dev = 0, ndev
call omp_target_free (dev_cptr(dev), dev)
end do
end subroutine
subroutine two
integer(c_size_t), parameter :: N = 10, M = 30
integer, target :: host_data(N,M)
type(c_ptr) :: dev_cptr(0:ndev), cptr, tmp_cptr
integer :: dev, dev2, i, j, r
do dev = 0, ndev
dev_cptr(dev) = omp_target_alloc (N*M*sizeof_int, dev)
if (.not. c_associated (dev_cptr(dev))) stop 21
end do
do i = 1, M
do j = 1, N
host_data(j,i) = i*100 + j
end do
end do
! copy full array host -> all devices + check value + set per-device value
do dev = 0, ndev
r = omp_target_memcpy_rect (dev_cptr(dev), c_loc(host_data), sizeof_int, &
num_dims=2_c_int, volume=[M, N], &
dst_offsets=[0_sk, 0_sk], src_offsets=[0_sk, 0_sk], &
dst_dimensions=[M, N], src_dimensions=[M,N], &
dst_device_num=dev, src_device_num=omp_initial_device)
if (r /= 0) stop 22
cptr = dev_cptr(dev)
!$omp target device(dev) is_device_ptr(cptr)
block
integer, pointer, contiguous :: fptr(:,:)
call c_f_pointer(cptr, fptr, [N,M])
do i = 1, M
do j = 1, N
if (fptr(j,i) /= i*100 + j) stop 23
fptr(j,i) = i*100 + j + 1000 * dev
end do
end do
end block
end do
! Test strided data - forth and back - same array sizes
do dev = 0, ndev
do dev2 = 0, ndev
tmp_cptr = omp_target_alloc (N*M*sizeof_int, dev)
if (.not. c_associated (tmp_cptr)) stop 24
!$omp target device(dev) is_device_ptr(tmp_cptr)
block
integer, pointer, contiguous :: fptr(:,:)
call c_f_pointer(tmp_cptr, fptr, [N,M])
do i = 1, M
do j = 1, N
fptr(j,i) = i*100 + j + 100000 * (dev+1)
end do
end do
end block
if (M-14 > M - max(5,2) &
.or. N-3 > N - max(2,1)) stop 28
r = omp_target_memcpy_rect (dev_cptr(dev2), tmp_cptr, sizeof_int, &
num_dims=2_c_int, volume=[M-14, N-3], &
dst_offsets=[5_sk, 3_sk], src_offsets=[2_sk, 1_sk], &
dst_dimensions=[M, N], src_dimensions=[M,N], &
dst_device_num=dev2, src_device_num=dev)
if (r /= 0) stop 25
cptr = dev_cptr(dev2)
!$omp target device(dev2) is_device_ptr(cptr)
block
logical :: checked(N,M)
integer, pointer, contiguous :: fptr(:,:)
call c_f_pointer(cptr, fptr, [N,M])
checked = .false.
do i = 1, M-14
do j = 1, N-3
if (fptr(j+3, i+5) /= (i+2)*100 + (j+1) + 100000 * (dev+1)) stop 26
checked(j+3, i+5) = .true.
end do
end do
! original device value
do i = 1, M
do j = 1, N
if (.not. checked(j,i)) then
if (fptr(j,i) /= i*100 + j + 1000 * dev2) stop 27
end if
end do
end do
end block
call omp_target_free (tmp_cptr, dev)
end do
! reset to original value
do dev2 = 0, ndev
cptr = dev_cptr(dev2)
!$omp target device(dev2) is_device_ptr(cptr)
block
integer, pointer, contiguous :: fptr(:,:)
call c_f_pointer(cptr, fptr, [N,M])
do i = 1, M
do j = 1, N
fptr(j,i) = i*100 + j + 1000 * dev2
end do
end do
end block
end do
end do
do dev = 0, ndev
call omp_target_free (dev_cptr(dev), dev)
end do
end subroutine
subroutine three
integer(c_size_t), parameter :: N1 = 10, N2 = 30, N3 = 15
integer, target :: host_data(N3,N2,N1)
type(c_ptr) :: dev_cptr(0:ndev), cptr, tmp_cptr
integer :: dev, dev2, i, j, k, r
do dev = 0, ndev
dev_cptr(dev) = omp_target_alloc (N1*N2*N3*sizeof_int, dev)
if (.not. c_associated (dev_cptr(dev))) stop 31
end do
do i = 1, N1
do j = 1, N2
do k = 1, N3
host_data(k, j,i) = i*1000 + 100*j + k
end do
end do
end do
! copy full array host -> all devices + check value + set per-device value
do dev = 0, ndev
r = omp_target_memcpy_rect (dev_cptr(dev), c_loc(host_data), sizeof_int, &
num_dims=3_c_int, volume=[N1, N2, N3], &
dst_offsets=[0_sk, 0_sk, 0_sk], src_offsets=[0_sk, 0_sk, 0_sk], &
dst_dimensions=[N1, N2, N3], src_dimensions=[N1, N2, N3], &
dst_device_num=dev, src_device_num=omp_initial_device)
if (r /= 0) stop 32
cptr = dev_cptr(dev)
!$omp target device(dev) is_device_ptr(cptr)
block
integer, pointer, contiguous :: fptr(:,:,:)
call c_f_pointer(cptr, fptr, [N3,N2,N1])
do i = 1, N1
do j = 1, N2
do k = 1, N3
if (fptr(k, j,i) /= i*1000 + 100*j + k) stop 33
fptr(k,j,i) = i*1000 + 100*j + k + 1000 * dev
end do
end do
end do
end block
end do
! Test strided data - forth and back - same array sizes
do dev = 0, ndev
do dev2 = 0, ndev
tmp_cptr = omp_target_alloc (N1*N2*N3*sizeof_int, dev)
if (.not. c_associated (tmp_cptr)) stop 34
!$omp target device(dev) is_device_ptr(tmp_cptr)
block
integer, pointer, contiguous :: fptr(:,:,:)
call c_f_pointer(tmp_cptr, fptr, [N3,N2,N1])
do i = 1, N1
do j = 1, N2
do k = 1, N3
fptr(k,j,i) = i*1000 + 100*j + k + 100000 * (dev+1)
end do
end do
end do
end block
if (N1-5 > N1 - max(5,2) &
.or. N2-13 > N2 - max(3,1) &
.or. N3-5 > N3 - max(2,4)) stop 38
r = omp_target_memcpy_rect (dev_cptr(dev2), tmp_cptr, sizeof_int, &
num_dims=3_c_int, volume=[N1-5, N2-13,N3-5], &
dst_offsets=[5_sk, 3_sk,2_sk], src_offsets=[2_sk, 1_sk,4_sk], &
dst_dimensions=[N1,N2,N3], src_dimensions=[N1,N2,N3], &
dst_device_num=dev2, src_device_num=dev)
if (r /= 0) stop 35
cptr = dev_cptr(dev2)
!$omp target device(dev2) is_device_ptr(cptr)
block
logical :: checked(N3,N2,N1)
integer, pointer, contiguous :: fptr(:,:,:)
call c_f_pointer(cptr, fptr, [N3,N2,N1])
checked = .false.
do i = 1, N1-5
do j = 1, N2-13
do k = 1, N3-5
if (fptr(k+2, j+3, i+5) /= (i+2)*1000 + 100*(j+1) + (k+4) + 100000 * (dev+1)) stop 36
checked(k+2, j+3, i+5) = .true.
end do
end do
end do
! original device value
do i = 1, N1
do j = 1, N2
do k = 1, N3
if (.not. checked(k,j,i)) then
if (fptr(k,j,i) /= i*1000 + 100*j + k + 1000 * dev2) stop 37
end if
end do
end do
end do
end block
call omp_target_free (tmp_cptr, dev)
end do
! reset to original value
do dev2 = 0, ndev
cptr = dev_cptr(dev2)
!$omp target device(dev2) is_device_ptr(cptr)
block
integer, pointer, contiguous :: fptr(:,:,:)
call c_f_pointer(cptr, fptr, [N3,N2,N1])
do i = 1, N1
do j = 1, N2
do k = 1, N3
fptr(k,j,i) = i*1000 + 100*j + k + 1000 * dev2
end do
end do
end do
end block
end do
end do
do dev = 0, ndev
call omp_target_free (dev_cptr(dev), dev)
end do
end subroutine
subroutine four
integer(c_size_t), parameter :: N1 = 10, N2 = 30, N3 = 15, N4 = 25
integer, target :: host_data(N4, N3,N2,N1)
type(c_ptr) :: dev_cptr(0:ndev), cptr, tmp_cptr
integer :: dev, dev2, i, j, k, ll, r
do dev = 0, ndev
dev_cptr(dev) = omp_target_alloc (N1*N2*N3*N4*sizeof_int, dev)
if (.not. c_associated (dev_cptr(dev))) stop 41
end do
do i = 1, N1
do j = 1, N2
do k = 1, N3
do ll = 1, N4
host_data(ll, k, j,i) = i*1000 + 100*j + k*10 + ll
end do
end do
end do
end do
! copy full array host -> all devices + check value + set per-device value
do dev = 0, ndev
r = omp_target_memcpy_rect (dev_cptr(dev), c_loc(host_data), sizeof_int, &
num_dims=4_c_int, volume=[N1, N2, N3, N4], &
dst_offsets=[0_sk, 0_sk, 0_sk, 0_sk], src_offsets=[0_sk, 0_sk, 0_sk, 0_sk], &
dst_dimensions=[N1, N2, N3, N4], src_dimensions=[N1, N2, N3, N4], &
dst_device_num=dev, src_device_num=omp_initial_device)
if (r /= 0) stop 42
cptr = dev_cptr(dev)
!$omp target device(dev) is_device_ptr(cptr)
block
integer, pointer, contiguous :: fptr(:,:,:,:)
call c_f_pointer(cptr, fptr, [N4,N3,N2,N1])
do i = 1, N1
do j = 1, N2
do k = 1, N3
do ll = 1, N4
if (fptr(ll, k, j,i) /= i*1000 + 100*j + k*10 + ll) stop 43
fptr(ll,k,j,i) = i*1000 + 100*j + k*10 + ll + 1000 * dev
end do
end do
end do
end do
end block
end do
! Test strided data - forth and back - same array sizes
do dev = 0, ndev
do dev2 = 0, ndev
tmp_cptr = omp_target_alloc (N1*N2*N3*N4*sizeof_int, dev)
if (.not. c_associated (tmp_cptr)) stop 44
!$omp target device(dev) is_device_ptr(tmp_cptr)
block
integer, pointer, contiguous :: fptr(:,:,:,:)
call c_f_pointer(tmp_cptr, fptr, [N4,N3,N2,N1])
do i = 1, N1
do j = 1, N2
do k = 1, N3
do ll = 1, N4
fptr(ll,k,j,i) = i*1000 + 100*j + k*10 + ll + 100000 * (dev+1)
end do
end do
end do
end do
end block
if (N1-5 > N1 - max(5,2) &
.or. N2-13 > N2 - max(3,1) &
.or. N3-5 > N3 - max(2,4) &
.or. N4-11 > N4 - max(7,5)) stop 48
r = omp_target_memcpy_rect (dev_cptr(dev2), tmp_cptr, sizeof_int, &
num_dims=4_c_int, volume=[N1-5, N2-13,N3-5,N4-11], &
dst_offsets=[5_sk, 3_sk,2_sk,7_sk], src_offsets=[2_sk, 1_sk,4_sk,5_sk], &
dst_dimensions=[N1,N2,N3,N4], src_dimensions=[N1,N2,N3,N4], &
dst_device_num=dev2, src_device_num=dev)
if (r /= 0) stop 45
cptr = dev_cptr(dev2)
!$omp target device(dev2) is_device_ptr(cptr)
block
logical, allocatable :: checked(:,:,:,:) ! allocatble to reduce stack size
integer, pointer, contiguous :: fptr(:,:,:,:)
call c_f_pointer(cptr, fptr, [N4,N3,N2,N1])
allocate (checked(N4,N3,N2,N1), source=.false.)
do i = 1, N1-5
do j = 1, N2-13
do k = 1, N3-5
do ll = 1, N4-11
if (fptr(ll+7, k+2, j+3, i+5) /= (i+2)*1000 + 100*(j+1) + (k+4)*10 + ll+5 + 100000 * (dev+1)) stop 46
checked(ll+7, k+2, j+3, i+5) = .true.
end do
end do
end do
end do
! original device value
do i = 1, N1
do j = 1, N2
do k = 1, N3
do ll = 1, N4
if (.not. checked(ll,k,j,i)) then
if (fptr(ll,k,j,i) /= i*1000 + 100*j + k*10 + ll + 1000 * dev2) stop 47
end if
end do
end do
end do
end do
deallocate (checked)
end block
call omp_target_free (tmp_cptr, dev)
end do
! reset to original value
do dev2 = 0, ndev
cptr = dev_cptr(dev2)
!$omp target device(dev2) is_device_ptr(cptr)
block
integer, pointer, contiguous :: fptr(:,:,:,:)
call c_f_pointer(cptr, fptr, [N4,N3,N2,N1])
do i = 1, N1
do j = 1, N2
do k = 1, N3
do ll = 1, N4
fptr(ll,k,j,i) = i*1000 + 100*j + k*10 + ll + 1000 * dev2
end do
end do
end do
end do
end block
end do
end do
do dev = 0, ndev
call omp_target_free (dev_cptr(dev), dev)
end do
end subroutine
end program
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