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initialise_chunk_kernel.f90
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!Crown Copyright 2012 AWE.
!
! This file is part of CloverLeaf.
!
! CloverLeaf is free software: you can redistribute it and/or modify it under
! the terms of the GNU General Public License as published by the
! Free Software Foundation, either version 3 of the License, or (at your option)
! any later version.
!
! CloverLeaf is distributed in the hope that it will be useful, but
! WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
! FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
! details.
!
! You should have received a copy of the GNU General Public License along with
! CloverLeaf. If not, see http://www.gnu.org/licenses/.
!> @brief Fortran chunk initialisation kernel.
!> @author Wayne Gaudin
!> @details Calculates mesh geometry for the mesh chunk based on the mesh size.
MODULE initialise_chunk_kernel_module
CONTAINS
SUBROUTINE initialise_chunk_kernel(x_min,x_max,y_min,y_max,z_min,z_max,&
xmin,ymin,zmin,dx,dy,dz, &
vertexx, &
vertexdx, &
vertexy, &
vertexdy, &
vertexz, &
vertexdz, &
cellx, &
celldx, &
celly, &
celldy, &
cellz, &
celldz, &
volume, &
xarea, &
yarea, &
zarea )
IMPLICIT NONE
INTEGER :: x_min,x_max,y_min,y_max,z_min,z_max
REAL(KIND=8) :: xmin,ymin,zmin,dx,dy,dz
REAL(KIND=8), DIMENSION(x_min-2:x_max+3) :: vertexx
REAL(KIND=8), DIMENSION(x_min-2:x_max+3) :: vertexdx
REAL(KIND=8), DIMENSION(y_min-2:y_max+3) :: vertexy
REAL(KIND=8), DIMENSION(y_min-2:y_max+3) :: vertexdy
REAL(KIND=8), DIMENSION(z_min-2:z_max+3) :: vertexz
REAL(KIND=8), DIMENSION(z_min-2:z_max+3) :: vertexdz
REAL(KIND=8), DIMENSION(x_min-2:x_max+2) :: cellx
REAL(KIND=8), DIMENSION(x_min-2:x_max+2) :: celldx
REAL(KIND=8), DIMENSION(y_min-2:y_max+2) :: celly
REAL(KIND=8), DIMENSION(y_min-2:y_max+2) :: celldy
REAL(KIND=8), DIMENSION(z_min-2:z_max+2) :: cellz
REAL(KIND=8), DIMENSION(z_min-2:z_max+2) :: celldz
REAL(KIND=8), DIMENSION(x_min-2:x_max+2 ,y_min-2:y_max+2,z_min-2:z_max+2) :: volume
REAL(KIND=8), DIMENSION(x_min-2:x_max+3 ,y_min-2:y_max+2,z_min-2:z_max+2) :: xarea
REAL(KIND=8), DIMENSION(x_min-2:x_max+2 ,y_min-2:y_max+3,z_min-2:z_max+2) :: yarea
REAL(KIND=8), DIMENSION(x_min-2:x_max+2 ,y_min-2:y_max+2,z_min-2:z_max+3) :: zarea
INTEGER :: j,k,l
!$ACC DATA
!$ACC KERNELS
!$ACC LOOP INDEPENDENT
DO j=x_min-2,x_max+3
vertexx(j)=xmin+dx*float(j-x_min)
ENDDO
!$ACC END KERNELS
!$ACC KERNELS
!$ACC LOOP INDEPENDENT
DO j=x_min-2,x_max+3
vertexdx(j)=dx
ENDDO
!$ACC END KERNELS
!$ACC KERNELS
!$ACC LOOP INDEPENDENT
DO k=y_min-2,y_max+3
vertexy(k)=ymin+dy*float(k-y_min)
ENDDO
!$ACC END KERNELS
!$ACC KERNELS
!$ACC LOOP INDEPENDENT
DO k=y_min-2,y_max+3
vertexdy(k)=dy
ENDDO
!$ACC END KERNELS
!$ACC KERNELS
!$ACC LOOP INDEPENDENT
DO l=z_min-2,z_max+3
vertexz(l)=zmin+dz*float(l-z_min)
ENDDO
!$ACC END KERNELS
!$ACC KERNELS
!$ACC LOOP INDEPENDENT
DO l=z_min-2,z_max+3
vertexdz(l)=dz
ENDDO
!$ACC END KERNELS
!$ACC KERNELS
!$ACC LOOP INDEPENDENT
DO j=x_min-2,x_max+2
cellx(j)=0.5*(vertexx(j)+vertexx(j+1))
ENDDO
!$ACC END KERNELS
!$ACC KERNELS
!$ACC LOOP INDEPENDENT
DO j=x_min-2,x_max+2
celldx(j)=dx
ENDDO
!$ACC END KERNELS
!$ACC KERNELS
!$ACC LOOP INDEPENDENT
DO k=y_min-2,y_max+2
celly(k)=0.5*(vertexy(k)+vertexy(k+1))
ENDDO
!$ACC END KERNELS
!$ACC KERNELS
!$ACC LOOP INDEPENDENT
DO k=y_min-2,y_max+2
celldy(k)=dy
ENDDO
!$ACC END KERNELS
!$ACC KERNELS
!$ACC LOOP INDEPENDENT
DO l=z_min-2,z_max+2
cellz(l)=0.5*(vertexz(l)+vertexz(l+1))
ENDDO
!$ACC END KERNELS
!$ACC KERNELS
!$ACC LOOP INDEPENDENT
DO l=z_min-2,z_max+2
celldz(l)=dz
ENDDO
!$ACC END KERNELS
!$ACC KERNELS
!$ACC LOOP INDEPENDENT
DO l=z_min-2,z_max+2
!$ACC LOOP INDEPENDENT
DO k=y_min-2,y_max+2
!$ACC LOOP INDEPENDENT
DO j=x_min-2,x_max+2
volume(j,k,l)=dx*dy*dz
ENDDO
ENDDO
ENDDO
!$ACC END KERNELS
!$ACC KERNELS
!$ACC LOOP INDEPENDENT
DO l=z_min-2,z_max+2
!$ACC LOOP INDEPENDENT
DO k=y_min-2,y_max+2
!$ACC LOOP INDEPENDENT
DO j=x_min-2,x_max+2
xarea(j,k,l)=celldy(k)*celldz(l)
ENDDO
ENDDO
ENDDO
!$ACC END KERNELS
!$ACC KERNELS
!$ACC LOOP INDEPENDENT
DO l=z_min-2,z_max+2
!$ACC LOOP INDEPENDENT
DO k=y_min-2,y_max+2
!$ACC LOOP INDEPENDENT
DO j=x_min-2,x_max+2
yarea(j,k,l)=celldx(j)*celldz(l)
ENDDO
ENDDO
ENDDO
!$ACC END KERNELS
!$ACC KERNELS
!$ACC LOOP INDEPENDENT
DO l=z_min-2,z_max+2
!$ACC LOOP INDEPENDENT
DO k=y_min-2,y_max+2
!$ACC LOOP INDEPENDENT
DO j=x_min-2,x_max+2
zarea(j,k,l)=celldx(j)*celldy(k)
ENDDO
ENDDO
ENDDO
!$ACC END KERNELS
!$ACC END DATA
END SUBROUTINE initialise_chunk_kernel
END MODULE initialise_chunk_kernel_module