derek.holloway
7502bf64a4
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54 lines
1.5 KiB
Fortran
54 lines
1.5 KiB
Fortran
! Copyright 2026 Free Software Foundation, Inc.
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! Copyright (C) 2026 Advanced Micro Devices, Inc. All rights reserved.
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!
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! This file is part of GDB.
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!
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! This program is free software; you can redistribute it and/or modify
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! it under the terms of the GNU General Public License as published by
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! the Free Software Foundation; either version 3 of the License, or
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! (at your option) any later version.
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!
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! This program is distributed in the hope that it will be useful,
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! but WITHOUT ANY WARRANTY; without even the implied warranty of
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! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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! GNU General Public License for more details.
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!
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! You should have received a copy of the GNU General Public License
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! along with this program. If not, see <http://www.gnu.org/licenses/>.
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!
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! Small Fortran program offloading a loop to the GPU via '!$omp
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! target'. The loop calls a '!$omp declare target' function so the
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! test can also check the device-side call stack.
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module devmod
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implicit none
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contains
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function add_vals (x, y) result (r)
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!$omp declare target
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integer, intent(in) :: x, y
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integer :: r
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r = x + y ! fadd-line
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end function add_vals
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end module devmod
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program omp_target_fortran
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use devmod
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implicit none
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integer, parameter :: n = 32
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integer :: a(n), b(n), c(n), i
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do i = 1, n
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a(i) = i
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b(i) = 2 * i
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c(i) = 0
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end do
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!$omp target map(to:a, b) map(tofrom:c)
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do i = 1, n
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c(i) = add_vals (a(i), b(i))
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end do
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!$omp end target
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print *, 'c1=', c(1)
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end program omp_target_fortran
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