Changeset 1257 for palm/trunk/SOURCE/diffusion_w.f90

Timestamp:

Nov 8, 2013 3:18:40 PM (10 years ago)

Author:

raasch

Message:

New:
---

openACC porting of timestep calculation
(modules, timestep, time_integration)

Changed:

---

openACC loop directives and vector clauses removed (because they do not give any performance improvement with PGI
compiler versions > 13.6)
(advec_ws, buoyancy, coriolis, diffusion_e, diffusion_s, diffusion_u, diffusion_v, diffusion_w, diffusivities, exchange_horiz, fft_xy, pres, production_e, transpose, tridia_solver, wall_fluxes)

openACC loop independent clauses added
(boundary_conds, prandtl_fluxes, pres)

openACC declare create statements moved after FORTRAN declaration statement
(diffusion_u, diffusion_v, diffusion_w, fft_xy, poisfft, production_e, tridia_solver)

openACC end parallel replaced by end parallel loop
(flow_statistics, pres)

openACC "kernels do" replaced by "kernels loop"
(prandtl_fluxes)

output format for theta* changed to avoid output of *
(run_control)

Errors:

---

bugfix for calculation of advective timestep (old version may cause wrong timesteps in case of
vertixcally stretched grids)
Attention: standard run-control output has changed!
(timestep)

File:

• palm/trunk/SOURCE/diffusion_w.f90 (modified) (4 diffs)

palm/trunk/SOURCE/diffusion_w.f90

@@ -20 +20 @@
 ! Current revisions:
 ! -----------------
-!
+! openacc loop and loop vector clauses removed, declare create moved after
+! the FORTRAN declaration statement
 !
 ! Former revisions:
@@ -214 +215 @@
        REAL    ::  kmxm, kmxp, kmym, kmyp
 
+       REAL, DIMENSION(nzb:nzt+1,nys:nyn,nxl:nxr) ::  wsus, wsvs
        !$acc declare create ( wsus, wsvs )
-       REAL, DIMENSION(nzb:nzt+1,nys:nyn,nxl:nxr) ::  wsus, wsvs
-
 
 !
@@ -231 +231 @@
        !$acc         present ( ddzu, ddzw, fwxm, fwxp, fwym, fwyp, wall_w_x, wall_w_y )           &
        !$acc         present ( nzb_w_inner, nzb_w_outer )
-       !$acc loop
        DO  i = i_left, i_right
           DO  j = j_south, j_north
-             !$acc loop vector( 32 )
              DO  k = 1, nzt
                 IF ( k > nzb_w_outer(j,i) )  THEN
@@ -268 +266 @@
 !
 !--          Wall functions at all vertical walls, where necessary
-             !$acc loop vector( 32 )
              DO  k = 1,nzt