Changeset 1257 for palm/trunk/SOURCE/exchange_horiz.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/exchange_horiz.f90 (modified) (3 diffs)

palm/trunk/SOURCE/exchange_horiz.f90

@@ -20 +20 @@
 ! Current revisions:
 ! -----------------
-!
+! openacc loop and loop vector clauses removed
 !
 ! Former revisions:
@@ -245 +245 @@
           DO  i = 0, nbgp_local-1
              DO  j = nys-nbgp_local, nyn+nbgp_local
-                !$acc loop vector( 32 )
                 DO  k = nzb, nzt+1
                    ar(k,j,nxl-nbgp_local+i) = ar(k,j,nxr-nbgp_local+1+i)
@@ -262 +261 @@
        IF ( on_device )  THEN
           !$acc kernels present( ar )
-          !$acc loop
           DO  i = nxl-nbgp_local, nxr+nbgp_local
              !$acc loop independent
              DO  j = 0, nbgp_local-1
-                !$acc loop vector( 32 )
+                !$acc loop independent
                 DO  k = nzb, nzt+1
                    ar(k,nys-nbgp_local+j,i) = ar(k,nyn-nbgp_local+1+j,i)