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TheRock/rocm-systems/projects/rocprofiler-systems/examples/hpc/jacobi-fortran-usm/update.f90
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

33 lines
748 B
Fortran

module update_mod
use kind_mod
use mesh_mod, only: mesh_t
implicit none
!$omp requires unified_shared_memory
private
public :: update
contains
subroutine update(mesh,rhs,au,u,res)
type(mesh_t), intent(inout) :: mesh
real(RK), intent(inout) :: rhs(:,:), au(:,:)
real(RK), intent(inout) :: u(:,:)
real(RK), intent(inout) :: res(:,:)
integer(IK) :: i,j
real(RK) :: temp,factor
factor = (2._RK/mesh%dx**2+2._RK/mesh%dy**2)**-1
!$omp target teams distribute parallel do collapse(2) private(temp)
do j = 1,mesh%n_y
do i = 1,mesh%n_x
temp = rhs(i,j) - au(i,j)
res(i,j) = temp
u(i,j) = u(i,j) + temp*factor
end do
end do
end subroutine
end module update_mod