EVOLUTION: Update subroutine to calculate errors using Lmax-norm.
Signed-off-by: Grzegorz Kowal <grzegorz@amuncode.org>
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@ -876,9 +876,9 @@ module evolution
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call get_parameter("error_norm", error_norm)
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select case(trim(error_norm))
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case("max", "maximum", "infinity")
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update_errors => update_errors_max
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name_norm = "maximum norm"
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case("Lmax", "lmax", "max", "maximum", "infinity")
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update_errors => update_errors_lmax
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name_norm = "Lmax-norm"
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case("L1", "l1", "Manhattan", "manhattan")
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update_errors => update_errors_l1
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name_norm = "L1-norm"
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@ -4423,64 +4423,107 @@ module evolution
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!
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!===============================================================================
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!
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! subroutine UPDATE_ERRORS_MAX:
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! ----------------------------
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! subroutine UPDATE_ERRORS_LMAX:
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! -----------------------------
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!
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! Subroutine updates the errors with respect to the absolute and relative
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! tolerances using the maximum norm. The errors are calculated per variable.
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! Description:
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!
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! Arguments:
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! The subroutine is designed to update errors with respect to absolute and
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! relative tolerances using the Lmax norm. The errors are calculated for
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! each variable.
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!
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! nh - the index of the higher order solution
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! nl - the index of the lower order solution
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! Arguments:
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!
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! nh - the index of the higher order solution;
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! nl - the index of the lower order solution;
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!
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!===============================================================================
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!
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subroutine update_errors_max(nh, nl)
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subroutine update_errors_lmax(nh, nl)
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use blocks , only : block_data, data_blocks, get_dblocks
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use coordinates, only : nb, ne
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use coordinates, only : nc => ncells, nb, ne
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use equations , only : nf, errors
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use helpers , only : print_message
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#ifdef MPI
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use mpitools , only : reduce_maximum
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use mpitools , only : reduce_sum
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#endif /* MPI */
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use workspace , only : resize_workspace, work, work_in_use
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implicit none
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integer, intent(in) :: nh, nl
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integer :: l, n, p
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real(kind=8) :: err
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character(len=*), parameter :: loc = 'EVOLUTION:update_errors_lmax()'
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type(block_data), pointer :: pdata
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integer :: nblks, n, p
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logical , save :: first = .true.
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integer , save :: nt = 0
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real(kind=8), dimension(nf) :: lerrors
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real(kind=8), dimension(:,:,:), pointer, save :: uhi, ulo, div
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!$omp threadprivate(first,nt,uhi,ulo,div)
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!$ integer :: omp_get_thread_num
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!-------------------------------------------------------------------------------
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!
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errors(:) = 0.0d+00
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n = get_dblocks()
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nblks = get_dblocks()
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!$omp parallel default(shared) private(pdata,lerrors,n,p)
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if (first) then
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!$ nt = omp_get_thread_num()
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n = nc**NDIMS
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#if NDIMS == 3
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uhi(1:nc,1:nc,1:nc) => work( 1: n,nt)
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ulo(1:nc,1:nc,1:nc) => work( n+1:2*n,nt)
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div(1:nc,1:nc,1:nc) => work(2*n+1:3*n,nt)
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#else /* NDIMS == 3 */
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uhi(1:nc,1:nc,1: 1) => work( 1: n,nt)
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ulo(1:nc,1:nc,1: 1) => work( n+1:2*n,nt)
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div(1:nc,1:nc,1: 1) => work(2*n+1:3*n,nt)
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#endif /* NDIMS == 3 */
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first = .false.
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end if
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if (work_in_use(nt)) &
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call print_message(loc, "Workspace is being used right now! " // &
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"Corruptions can occur!")
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work_in_use(nt) = .true.
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!$omp barrier
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!$omp do reduction(max:errors)
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do n = 1, nblks
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pdata => data_blocks(n)%ptr
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!$omp parallel do default(shared) private(pdata,p,err)
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do l = 1, n
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pdata => data_blocks(l)%ptr
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do p = 1, nf
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#if NDIMS == 3
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err = maxval(abs(pdata%uu(p,nb:ne,nb:ne,nb:ne,nh) &
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- pdata%uu(p,nb:ne,nb:ne,nb:ne,nl)) / (atol + rtol * &
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max(abs(pdata%uu(p,nb:ne,nb:ne,nb:ne,nh)), &
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abs(pdata%uu(p,nb:ne,nb:ne,nb:ne,nl)))))
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uhi = pdata%uu(p,nb:ne,nb:ne,nb:ne,nh)
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ulo = pdata%uu(p,nb:ne,nb:ne,nb:ne,nl)
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#else /* NDIMS == 3 */
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err = maxval(abs(pdata%uu(p,nb:ne,nb:ne, : ,nh) &
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- pdata%uu(p,nb:ne,nb:ne, : ,nl)) / (atol + rtol * &
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max(abs(pdata%uu(p,nb:ne,nb:ne, : ,nh)), &
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abs(pdata%uu(p,nb:ne,nb:ne, : ,nl)))))
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uhi = pdata%uu(p,nb:ne,nb:ne, : ,nh)
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ulo = pdata%uu(p,nb:ne,nb:ne, : ,nl)
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#endif /* NDIMS == 3 */
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!$omp atomic update
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errors(p) = max(errors(p), err)
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div = atol + rtol * max(abs(uhi), abs(ulo))
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lerrors(p) = maxval(abs(uhi - ulo) / div)
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end do
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errors = max(errors, lerrors)
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end do
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!$omp end parallel do
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!$omp end do nowait
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work_in_use(nt) = .false.
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!$omp end parallel
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#ifdef MPI
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call reduce_maximum(errors)
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@ -4488,7 +4531,7 @@ module evolution
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!-------------------------------------------------------------------------------
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!
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end subroutine update_errors_max
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end subroutine update_errors_lmax
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!===============================================================================
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!
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