source: palm/trunk/SOURCE/check_for_restart.f90 @ 222

Last change on this file since 222 was 222, checked in by letzel, 13 years ago
  • Bugfixes for nonparallel execution
  • Property svn:keywords set to Id
File size: 5.1 KB
Line 
1 SUBROUTINE check_for_restart
2
3!------------------------------------------------------------------------------!
4! Actual revisions:
5! -----------------
6! Implementation of an MPI-1 coupling: replaced myid with target_id
7! Bugfix for nonparallel execution
8!
9! Former revisions:
10! -----------------
11! $Id: check_for_restart.f90 222 2009-01-12 16:04:16Z letzel $
12!
13! 108 2007-08-24 15:10:38Z letzel
14! modifications to terminate coupled runs
15!
16! RCS Log replace by Id keyword, revision history cleaned up
17!
18! Revision 1.11  2007/02/11 12:55:13  raasch
19! Informative output to the job protocol
20!
21! Revision 1.1  1998/03/18 20:06:51  raasch
22! Initial revision
23!
24!
25! Description:
26! ------------
27! Set stop flag, if restart is neccessary because of expiring cpu-time or
28! if it is forced by user
29!------------------------------------------------------------------------------!
30
31    USE pegrid
32    USE control_parameters
33
34    IMPLICIT NONE
35
36
37    LOGICAL :: terminate_run_l
38    REAL ::  remaining_time
39
40
41!
42!-- Check remaining CPU-time
43    CALL local_tremain( remaining_time )
44
45!
46!-- If necessary set a flag to stop the model run
47    terminate_run_l = .FALSE.
48    IF ( remaining_time <= termination_time_needed  .AND. &
49         write_binary(1:4) == 'true' )  THEN
50
51       terminate_run_l = .TRUE.
52    ENDIF
53
54#if defined( __parallel )
55!
56!-- Make a logical OR for all processes. Stop the model run if at least
57!-- one processor has reached the time limit.
58    CALL MPI_ALLREDUCE( terminate_run_l, terminate_run, 1, MPI_LOGICAL, &
59                        MPI_LOR, comm2d, ierr )
60#else
61    terminate_run = terminate_run_l
62#endif
63
64!
65!-- Output that job will be terminated
66    IF ( terminate_run  .AND.  myid == 0 )  THEN
67       PRINT*, '*** WARNING: run will be terminated because it is running', &
68                    ' out of job cpu limit'
69       PRINT*, '             remaining time:         ', remaining_time, ' s'
70       PRINT*, '             termination time needed:', &
71                             termination_time_needed, ' s'
72    ENDIF
73
74!
75!-- In case of coupled runs inform the remote model of the termination
76!-- and its reason, provided the remote model has not already been
77!-- informed of another termination reason (terminate_coupled > 0) before,
78!-- or vice versa (terminate_coupled_remote > 0).
79    IF ( terminate_run .AND. TRIM( coupling_mode ) /= 'uncoupled'  .AND. &
80         terminate_coupled == 0  .AND.  terminate_coupled_remote == 0 )  THEN
81
82       terminate_coupled = 3
83#if defined( __parallel )
84       CALL MPI_SENDRECV( terminate_coupled,        1, MPI_INTEGER,          &
85                          target_id, 0,                                      &
86                          terminate_coupled_remote, 1, MPI_INTEGER,          &
87                          target_id, 0,                                      &
88                          comm_inter, status, ierr )
89#endif
90    ENDIF
91
92!
93!-- Set the stop flag also, if restart is forced by user
94    IF ( time_restart /= 9999999.9  .AND.  time_restart < simulated_time ) &
95    THEN
96!
97!--    Restart is not neccessary, if the end time of the run (given by
98!--    the user) has been reached
99       IF ( simulated_time < end_time )  THEN
100          terminate_run = .TRUE.
101!
102!--       Increment restart time, if forced by user, otherwise set restart
103!--       time to default (no user restart)
104          IF ( dt_restart /= 9999999.9 )  THEN
105             time_restart = time_restart + dt_restart
106          ELSE
107             time_restart = 9999999.9
108          ENDIF
109
110          IF ( myid == 0 )  THEN
111             PRINT*, '*** INFORMATIVE: run will be terminated due to user ', &
112                                       'settings of'
113             PRINT*, '                 restart_time / dt_restart'
114             PRINT*, '                 new restart time is: ', time_restart, &
115                                       ' s'
116          ENDIF
117!
118!--       In case of coupled runs inform the remote model of the termination
119!--       and its reason, provided the remote model has not already been
120!--       informed of another termination reason (terminate_coupled > 0) before,
121!--       or vice versa (terminate_coupled_remote > 0).
122          IF ( coupling_mode /= 'uncoupled' .AND. terminate_coupled == 0  &
123               .AND.  terminate_coupled_remote == 0 )  THEN
124
125             IF ( dt_restart /= 9999999.9 )  THEN
126                terminate_coupled = 4
127             ELSE
128                terminate_coupled = 5
129             ENDIF
130#if defined( __parallel )
131             CALL MPI_SENDRECV( terminate_coupled,        1, MPI_INTEGER,    &
132                                target_id,  0,                               &
133                                terminate_coupled_remote, 1, MPI_INTEGER,    &
134                                target_id,  0,                               &
135                                comm_inter, status, ierr )
136#endif
137          ENDIF
138       ELSE
139          time_restart = 9999999.9
140       ENDIF
141    ENDIF
142
143!
144!-- If the run is stopped, set a flag file which is necessary to initiate
145!-- the start of a continuation run
146    IF ( terminate_run  .AND.  myid == 0 )  THEN
147
148       OPEN ( 90, FILE='CONTINUE_RUN', FORM='FORMATTED' )
149       WRITE ( 90, '(A)' )  TRIM( run_description_header )
150       CLOSE ( 90 )
151
152    ENDIF
153
154
155 END SUBROUTINE check_for_restart
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