derek.holloway
7502bf64a4
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54 lines
1.3 KiB
Fortran
54 lines
1.3 KiB
Fortran
! REQUIRES: flang, amdgpu
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! RUN: %libomptarget-compile-fortran-generic -fdo-concurrent-to-openmp=device
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! RUN: env LIBOMPTARGET_INFO=16 %libomptarget-run-generic 2>&1 | %fcheck-generic
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module saxpymod
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use iso_fortran_env
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public :: saxpy
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contains
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subroutine saxpy(a, x, y, n, m)
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use iso_fortran_env
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implicit none
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integer,intent(in) :: n, m
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real(kind=real32),intent(in) :: a
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real(kind=real32), dimension(:,:),intent(in) :: x
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real(kind=real32), dimension(:,:),intent(inout) :: y
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integer :: i, j
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do concurrent(i=1:n, j=1:m)
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y(i,j) = a * x(i,j) + y(i,j)
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end do
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write(*,*) "plausibility check:"
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write(*,'("y(1,1) ",f8.6)') y(1,1)
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write(*,'("y(n,m) ",f8.6)') y(n,m)
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end subroutine saxpy
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end module saxpymod
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program main
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use iso_fortran_env
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use saxpymod, ONLY:saxpy
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implicit none
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integer,parameter :: n = 1000, m=10000
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real(kind=real32), allocatable, dimension(:,:) :: x, y
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real(kind=real32) :: a
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integer :: i
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allocate(x(1:n,1:m), y(1:n,1:m))
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a = 2.0_real32
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x(:,:) = 1.0_real32
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y(:,:) = 2.0_real32
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call saxpy(a, x, y, n, m)
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deallocate(x,y)
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end program main
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! CHECK: PluginInterface device {{[0-9]+}} info: Launching kernel {{.*}}
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! CHECK: plausibility check:
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! CHECK: y(1,1) 4.0
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! CHECK: y(n,m) 4.0
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