source: palm/trunk/SOURCE/swap_timelevel.f90 @ 1321

Last change on this file since 1321 was 1321, checked in by raasch, 7 years ago

last commit documented

  • Property svn:keywords set to Id
File size: 5.0 KB
Line 
1 SUBROUTINE swap_timelevel
2
3!--------------------------------------------------------------------------------!
4! This file is part of PALM.
5!
6! PALM is free software: you can redistribute it and/or modify it under the terms
7! of the GNU General Public License as published by the Free Software Foundation,
8! either version 3 of the License, or (at your option) any later version.
9!
10! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
11! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12! A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
13!
14! You should have received a copy of the GNU General Public License along with
15! PALM. If not, see <http://www.gnu.org/licenses/>.
16!
17! Copyright 1997-2014 Leibniz Universitaet Hannover
18!--------------------------------------------------------------------------------!
19!
20! Current revisions:
21! -----------------
22!
23!
24! Former revisions:
25! -----------------
26! $Id: swap_timelevel.f90 1321 2014-03-20 09:40:40Z raasch $
27!
28! 1320 2014-03-20 08:40:49Z raasch
29! ONLY-attribute added to USE-statements,
30! revision history before 2012 removed,
31! 1318 2014-03-17 13:35:16Z raasch
32! module interfaces removed
33!
34! 1115 2013-03-26 18:16:16Z hoffmann
35! calculation of qr and nr is restricted to precipitation
36!
37! 1111 2013-03-08 23:54:10Z raasch
38! openACC directives added
39!
40! 1053 2012-11-13 17:11:03Z hoffmann
41! swap of timelevels for nr, qr added
42!
43! 1036 2012-10-22 13:43:42Z raasch
44! code put under GPL (PALM 3.9)
45!
46! 1032 2012-10-21 13:03:21Z letzel
47! save memory by not allocating pt_2 in case of neutral = .T.
48!
49! 1010 2012-09-20 07:59:54Z raasch
50! cpp switch __nopointer added for pointer free version
51!
52! 1001 2012-09-13 14:08:46Z raasch
53! all actions concerning leapfrog scheme removed
54!
55! Revision 1.1  2000/01/10  10:08:58  10:08:58  raasch (Siegfried Raasch)
56! Initial revision
57!
58!
59! Description:
60! ------------
61! Swap of timelevels of variables after each timestep
62!------------------------------------------------------------------------------!
63
64    USE arrays_3d,                                                             &
65        ONLY:  e, e_1, e_2, e_p, nr, nr_1, nr_2, nr_p, pt, pt_1, pt_2, pt_p, q,&
66               q_1, q_2, q_p, qr, qr_1, qr_2, qr_p, sa, sa_1, sa_2, sa_p, u,   &
67               u_1, u_2, u_p, v, v_1, v_2, v_p, w, w_1, w_2, w_p
68
69    USE cpulog,                                                                &
70        ONLY: cpu_log, log_point
71
72    USE control_parameters,                                                    &
73        ONLY:  cloud_physics, constant_diffusion, humidity, icloud_scheme,     &
74               neutral, ocean, passive_scalar, precipitation, timestep_count
75
76    IMPLICIT NONE
77
78!
79!-- Incrementing timestep counter
80    timestep_count = timestep_count + 1
81
82!
83!-- Swap of variables
84#if defined( __nopointer )
85    CALL cpu_log( log_point(28), 'swap_timelevel (nop)', 'start' )
86
87    !$acc kernels present( pt, pt_p, u, u_p, v, v_p, w, w_p )
88    u  = u_p
89    v  = v_p
90    w  = w_p
91    pt = pt_p
92    !$acc end kernels
93    IF ( .NOT. constant_diffusion )  THEN
94       !$acc kernels present( e, e_p )
95       e = e_p
96       !$acc end kernels
97    ENDIF
98    IF ( ocean )  THEN
99       sa = sa_p
100    ENDIF
101    IF ( humidity  .OR.  passive_scalar )  THEN
102       q = q_p             
103       IF ( cloud_physics  .AND.  icloud_scheme == 0 )  THEN
104          qr = qr_p
105          nr = nr_p
106       ENDIF
107    ENDIF
108
109    CALL cpu_log( log_point(28), 'swap_timelevel (nop)', 'stop' )
110#else
111    CALL cpu_log( log_point(28), 'swap_timelevel', 'start' )
112
113    SELECT CASE ( MOD( timestep_count, 2 ) )
114
115       CASE ( 0 )
116
117          u  => u_1;   u_p  => u_2
118          v  => v_1;   v_p  => v_2
119          w  => w_1;   w_p  => w_2
120          IF ( .NOT. neutral )  THEN
121             pt => pt_1;  pt_p => pt_2
122          ENDIF
123          IF ( .NOT. constant_diffusion )  THEN
124             e => e_1;    e_p => e_2
125          ENDIF
126          IF ( ocean )  THEN
127             sa => sa_1;  sa_p => sa_2
128          ENDIF
129          IF ( humidity  .OR.  passive_scalar )  THEN
130             q => q_1;    q_p => q_2
131             IF ( cloud_physics  .AND.  icloud_scheme == 0  .AND.  &
132                  precipitation )  THEN
133                qr => qr_1;    qr_p => qr_2
134                nr => nr_1;    nr_p => nr_2
135             ENDIF
136          ENDIF
137
138
139       CASE ( 1 )
140
141          u  => u_2;   u_p  => u_1
142          v  => v_2;   v_p  => v_1
143          w  => w_2;   w_p  => w_1
144          IF ( .NOT. neutral )  THEN
145             pt => pt_2;  pt_p => pt_1
146          ENDIF
147          IF ( .NOT. constant_diffusion )  THEN
148             e => e_2;    e_p => e_1
149          ENDIF
150          IF ( ocean )  THEN
151             sa => sa_2;  sa_p => sa_1
152          ENDIF
153          IF ( humidity  .OR.  passive_scalar )  THEN
154             q => q_2;    q_p => q_1
155             IF ( cloud_physics  .AND.  icloud_scheme == 0  .AND.  &
156                  precipitation)  THEN
157                qr => qr_2;    qr_p => qr_1
158                nr => nr_2;    nr_p => nr_1
159             ENDIF
160          ENDIF
161
162
163    END SELECT
164
165    CALL cpu_log( log_point(28), 'swap_timelevel', 'stop' )
166#endif
167
168 END SUBROUTINE swap_timelevel
169
170
Note: See TracBrowser for help on using the repository browser.