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Adding the examples of the Offload Do Concurrent article #2537

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Adding the examples of the Offload Do Concurrent article #2537

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3 changes: 3 additions & 0 deletions Publications/GPU-Opt-Guide/OpenMP/28_offload_do_concurrent/CMakeLists.txt
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add_fortran_example(do_concurrent)
add_fortran_example(hybrid_do_concurrent)
add_fortran_example(omp6_do_concurrent)
32 changes: 32 additions & 0 deletions Publications/GPU-Opt-Guide/OpenMP/28_offload_do_concurrent/do_concurrent.f90
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! Snippet begin0
program do_concurrent
use omp_lib
implicit none

integer :: i, outer
integer, dimension(10000) :: x, y, z
double precision :: t0, t1, time
x = 1
y = 0
z = 0
! Dummy offload to warm up the device
!$omp target
!$omp end target

t0 = omp_get_wtime()
do outer = 1, 24000
!call do_work_on_host_updating_x(x,...)
do concurrent (i = 1:10000)
y(i) = x(i) + 1
enddo

do concurrent (i = 1:10000)
z(i) = y(i) + 1
enddo
!call do_work_on_host_using_z(z,...)
enddo
t1 = omp_get_wtime()
time = t1-t0
print *, time
end program do_concurrent
! Snippet end
34 changes: 34 additions & 0 deletions Publications/GPU-Opt-Guide/OpenMP/28_offload_do_concurrent/hybrid_do_concurrent.f90
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program hybrid_do_concurrent
use omp_lib
implicit none

integer :: i, outer
integer, dimension(10000) :: x, y, z
double precision :: t0, t1, time
x = 1
y = 0
z = 0
! Dummy offload to warm up the device
!$omp target
!$omp end target

t0 = omp_get_wtime()
! Snippet begin
do outer = 1, 24000
!call do_work_on_host_updating_x(x,...)
!$omp target data map(to: x) map(alloc: y) map(from: z)
do concurrent (i = 1:10000)
y(i) = x(i) + 1
enddo

do concurrent (i = 1:10000)
z(i) = y(i) + 1
enddo
!$omp end target data
!call do_work_on_host_using_z(z,...)
enddo
! Snippet end
t1 = omp_get_wtime()
time = t1-t0
print *, time
end program hybrid_do_concurrent
36 changes: 36 additions & 0 deletions Publications/GPU-Opt-Guide/OpenMP/28_offload_do_concurrent/omp6_do_concurrent.f90
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program omp6_do_concurrent
use omp_lib
implicit none

integer :: i, outer
integer, dimension(10000) :: x, y, z
double precision :: t0, t1, time
x = 1
y = 0
z = 0
! Dummy offload to warm up the device
!$omp target
!$omp end target

t0 = omp_get_wtime()
! Snippet begin
do outer = 1, 2400
!call do_work_on_host_updating_x(x,...)
!$omp target data map(to: x) map(alloc: y) map(from: z)
!$omp target teams loop
do concurrent (i = 1:10000)
y(i) = x(i) + 1
enddo
!$omp target teams loop
do concurrent (i = 1:10000)
z(i) = y(i) + 1
enddo
!$omp end target data
!call do_work_on_host_using_z(z,...)
enddo
! Snippet end
t1 = omp_get_wtime()
time = t1-t0

print *, time
end program omp6_do_concurrent
1 change: 1 addition & 0 deletions Publications/GPU-Opt-Guide/OpenMP/CMakeLists.txt
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Expand Up @@ -18,3 +18,4 @@ add_subdirectory(23_omp_work_group)
add_subdirectory(24_device_ptr_addr_clauses)
add_subdirectory(25_fortran_example)
add_subdirectory(26_omp_prefetch)
add_subdirectory(28_offload_do_concurrent)