| 1 | SUBROUTINE check_for_restart |
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| 2 | |
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| 3 | !--------------------------------------------------------------------------------! |
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| 4 | ! This file is part of PALM. |
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| 5 | ! |
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| 6 | ! PALM is free software: you can redistribute it and/or modify it under the terms |
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| 7 | ! of the GNU General Public License as published by the Free Software Foundation, |
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| 8 | ! either version 3 of the License, or (at your option) any later version. |
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| 9 | ! |
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| 10 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY |
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| 11 | ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR |
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| 12 | ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
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| 13 | ! |
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| 14 | ! You should have received a copy of the GNU General Public License along with |
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| 15 | ! PALM. If not, see <http://www.gnu.org/licenses/>. |
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| 16 | ! |
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| 17 | ! Copyright 1997-2014 Leibniz Universitaet Hannover |
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| 18 | !--------------------------------------------------------------------------------! |
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| 19 | ! |
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| 20 | ! Current revisions: |
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| 21 | ! ----------------- |
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| 22 | ! bugfix: prevent infinite loop in case of automatic restarts |
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| 23 | ! |
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| 24 | ! Former revisions: |
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| 25 | ! ----------------- |
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| 26 | ! $Id: check_for_restart.f90 1509 2014-12-16 08:56:46Z heinze $ |
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| 27 | ! |
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| 28 | ! 1468 2014-09-24 14:06:57Z maronga |
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| 29 | ! Added support for unscheduled job termination using the flag files |
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| 30 | ! DO_STOP_NOW and DO_RESTART_NOW |
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| 31 | ! |
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| 32 | ! 1353 2014-04-08 15:21:23Z heinze |
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| 33 | ! REAL constants provided with KIND-attribute |
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| 34 | ! |
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| 35 | ! 1320 2014-03-20 08:40:49Z raasch |
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| 36 | ! ONLY-attribute added to USE-statements, |
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| 37 | ! kind-parameters added to all INTEGER and REAL declaration statements, |
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| 38 | ! kinds are defined in new module kinds, |
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| 39 | ! revision history before 2012 removed, |
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| 40 | ! comment fields (!:) to be used for variable explanations added to |
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| 41 | ! all variable declaration statements |
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| 42 | ! |
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| 43 | ! 1036 2012-10-22 13:43:42Z raasch |
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| 44 | ! code put under GPL (PALM 3.9) |
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| 45 | ! |
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| 46 | ! 1032 2012-10-21 13:03:21Z letzel |
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| 47 | ! minor reformatting |
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| 48 | ! |
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| 49 | ! Revision 1.1 1998/03/18 20:06:51 raasch |
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| 50 | ! Initial revision |
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| 51 | ! |
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| 52 | ! |
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| 53 | ! Description: |
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| 54 | ! ------------ |
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| 55 | ! Set stop flag, if restart is neccessary because of expiring cpu-time or |
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| 56 | ! if it is forced by user |
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| 57 | !------------------------------------------------------------------------------! |
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| 58 | |
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| 59 | USE control_parameters, & |
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| 60 | ONLY: coupling_mode, dt_restart, end_time, message_string, & |
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| 61 | run_description_header, simulated_time, terminate_coupled, & |
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| 62 | terminate_coupled_remote, terminate_run, & |
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| 63 | termination_time_needed, time_restart, & |
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| 64 | time_since_reference_point, write_binary |
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| 65 | USE kinds |
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| 66 | USE pegrid |
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| 67 | |
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| 68 | IMPLICIT NONE |
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| 69 | |
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| 70 | |
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| 71 | LOGICAL :: terminate_run_l !: |
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| 72 | LOGICAL :: do_stop_now = .FALSE. !: |
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| 73 | LOGICAL :: do_restart_now = .FALSE. !: |
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| 74 | |
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| 75 | REAL(wp) :: remaining_time !: |
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| 76 | |
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| 77 | |
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| 78 | ! |
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| 79 | !-- Check remaining CPU-time |
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| 80 | CALL local_tremain( remaining_time ) |
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| 81 | |
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| 82 | ! |
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| 83 | !-- If necessary set a flag to stop the model run |
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| 84 | terminate_run_l = .FALSE. |
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| 85 | IF ( remaining_time <= termination_time_needed .AND. & |
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| 86 | write_binary(1:4) == 'true' ) THEN |
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| 87 | |
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| 88 | terminate_run_l = .TRUE. |
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| 89 | ENDIF |
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| 90 | |
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| 91 | #if defined( __parallel ) |
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| 92 | ! |
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| 93 | !-- Make a logical OR for all processes. Stop the model run if at least |
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| 94 | !-- one processor has reached the time limit. |
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| 95 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
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| 96 | CALL MPI_ALLREDUCE( terminate_run_l, terminate_run, 1, MPI_LOGICAL, & |
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| 97 | MPI_LOR, comm2d, ierr ) |
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| 98 | #else |
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| 99 | terminate_run = terminate_run_l |
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| 100 | #endif |
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| 101 | |
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| 102 | ! |
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| 103 | !-- Output that job will be terminated |
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| 104 | IF ( terminate_run .AND. myid == 0 ) THEN |
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| 105 | WRITE( message_string, * ) 'run will be terminated because it is ', & |
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| 106 | 'running out of job cpu limit & ', & |
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| 107 | 'remaining time: ', remaining_time, ' s', & |
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| 108 | 'termination time needed:', termination_time_needed, ' s' |
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| 109 | CALL message( 'check_for_restart', 'PA0163', 0, 1, 0, 6, 0 ) |
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| 110 | ENDIF |
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| 111 | |
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| 112 | ! |
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| 113 | !-- In case of coupled runs inform the remote model of the termination |
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| 114 | !-- and its reason, provided the remote model has not already been |
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| 115 | !-- informed of another termination reason (terminate_coupled > 0) before, |
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| 116 | !-- or vice versa (terminate_coupled_remote > 0). |
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| 117 | IF ( terminate_run .AND. TRIM( coupling_mode ) /= 'uncoupled' .AND. & |
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| 118 | terminate_coupled == 0 .AND. terminate_coupled_remote == 0 ) THEN |
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| 119 | |
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| 120 | terminate_coupled = 3 |
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| 121 | |
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| 122 | #if defined( __parallel ) |
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| 123 | IF ( myid == 0 ) THEN |
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| 124 | CALL MPI_SENDRECV( terminate_coupled, 1, MPI_INTEGER, & |
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| 125 | target_id, 0, & |
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| 126 | terminate_coupled_remote, 1, MPI_INTEGER, & |
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| 127 | target_id, 0, & |
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| 128 | comm_inter, status, ierr ) |
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| 129 | ENDIF |
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| 130 | CALL MPI_BCAST( terminate_coupled_remote, 1, MPI_INTEGER, 0, comm2d, & |
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| 131 | ierr ) |
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| 132 | #endif |
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| 133 | ENDIF |
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| 134 | |
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| 135 | |
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| 136 | ! |
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| 137 | !-- Check if a flag file exists that forces a termination of the model |
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| 138 | IF ( myid == 0 ) THEN |
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| 139 | INQUIRE(FILE="DO_STOP_NOW", EXIST=do_stop_now) |
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| 140 | INQUIRE(FILE="DO_RESTART_NOW", EXIST=do_restart_now) |
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| 141 | |
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| 142 | IF ( do_stop_now .OR. do_restart_now ) THEN |
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| 143 | |
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| 144 | terminate_run_l = .TRUE. |
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| 145 | |
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| 146 | WRITE( message_string, * ) 'run will be terminated because user ', & |
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| 147 | 'forced a job finialization using a flag', & |
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| 148 | 'file:', & |
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| 149 | '&DO_STOP_NOW: ', do_stop_now, & |
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| 150 | '&DO_RESTART_NOW: ', do_restart_now |
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| 151 | CALL message( 'check_for_restart', 'PA0398', 0, 0, 0, 6, 0 ) |
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| 152 | |
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| 153 | ENDIF |
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| 154 | ENDIF |
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| 155 | |
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| 156 | |
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| 157 | #if defined( __parallel ) |
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| 158 | ! |
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| 159 | !-- Make a logical OR for all processes. Stop the model run if at least |
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| 160 | !-- one processor has reached the time limit. |
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| 161 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
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| 162 | CALL MPI_ALLREDUCE( terminate_run_l, terminate_run, 1, MPI_LOGICAL, & |
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| 163 | MPI_LOR, comm2d, ierr ) |
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| 164 | #else |
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| 165 | terminate_run = terminate_run_l |
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| 166 | #endif |
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| 167 | |
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| 168 | ! |
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| 169 | !-- In case of coupled runs inform the remote model of the termination |
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| 170 | !-- and its reason, provided the remote model has not already been |
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| 171 | !-- informed of another termination reason (terminate_coupled > 0) before, |
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| 172 | !-- or vice versa (terminate_coupled_remote > 0). |
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| 173 | IF ( terminate_run .AND. coupling_mode /= 'uncoupled' .AND. & |
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| 174 | terminate_coupled == 0 .AND. terminate_coupled_remote == 0 ) THEN |
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| 175 | |
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| 176 | terminate_coupled = 6 |
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| 177 | |
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| 178 | #if defined( __parallel ) |
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| 179 | IF ( myid == 0 ) THEN |
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| 180 | CALL MPI_SENDRECV( terminate_coupled, 1, MPI_INTEGER, & |
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| 181 | target_id, 0, & |
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| 182 | terminate_coupled_remote, 1, MPI_INTEGER, & |
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| 183 | target_id, 0, & |
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| 184 | comm_inter, status, ierr ) |
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| 185 | ENDIF |
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| 186 | CALL MPI_BCAST( terminate_coupled_remote, 1, MPI_INTEGER, 0, & |
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| 187 | comm2d, ierr ) |
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| 188 | #endif |
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| 189 | |
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| 190 | ENDIF |
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| 191 | |
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| 192 | ! |
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| 193 | !-- Set the stop flag also, if restart is forced by user settings |
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| 194 | IF ( time_restart /= 9999999.9_wp .AND. & |
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| 195 | time_restart < time_since_reference_point ) THEN |
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| 196 | |
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| 197 | ! |
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| 198 | !-- Restart is not neccessary, if the end time of the run (given by |
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| 199 | !-- the user) has been reached |
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| 200 | IF ( simulated_time < end_time ) THEN |
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| 201 | terminate_run = .TRUE. |
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| 202 | ! |
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| 203 | !-- Increment restart time, if forced by user, otherwise set restart |
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| 204 | !-- time to default (no user restart) |
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| 205 | IF ( dt_restart /= 9999999.9_wp ) THEN |
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| 206 | time_restart = time_restart + dt_restart |
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| 207 | ELSE |
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| 208 | time_restart = 9999999.9_wp |
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| 209 | ENDIF |
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| 210 | |
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| 211 | WRITE( message_string, * ) 'run will be terminated due to user ', & |
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| 212 | 'settings of', & |
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| 213 | '&restart_time / dt_restart', & |
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| 214 | '&new restart time is: ', time_restart, ' s' |
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| 215 | CALL message( 'check_for_restart', 'PA0164', 0, 0, 0, 6, 0 ) |
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| 216 | |
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| 217 | ! |
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| 218 | !-- In case of coupled runs inform the remote model of the termination |
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| 219 | !-- and its reason, provided the remote model has not already been |
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| 220 | !-- informed of another termination reason (terminate_coupled > 0) before, |
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| 221 | !-- or vice versa (terminate_coupled_remote > 0). |
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| 222 | IF ( coupling_mode /= 'uncoupled' .AND. terminate_coupled == 0 & |
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| 223 | .AND. terminate_coupled_remote == 0 ) THEN |
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| 224 | |
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| 225 | IF ( dt_restart /= 9999999.9_wp ) THEN |
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| 226 | terminate_coupled = 4 |
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| 227 | ELSE |
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| 228 | terminate_coupled = 5 |
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| 229 | ENDIF |
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| 230 | #if defined( __parallel ) |
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| 231 | IF ( myid == 0 ) THEN |
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| 232 | CALL MPI_SENDRECV( terminate_coupled, 1, MPI_INTEGER, & |
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| 233 | target_id, 0, & |
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| 234 | terminate_coupled_remote, 1, MPI_INTEGER, & |
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| 235 | target_id, 0, & |
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| 236 | comm_inter, status, ierr ) |
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| 237 | ENDIF |
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| 238 | CALL MPI_BCAST( terminate_coupled_remote, 1, MPI_INTEGER, 0, & |
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| 239 | comm2d, ierr ) |
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| 240 | #endif |
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| 241 | ENDIF |
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| 242 | ELSE |
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| 243 | time_restart = 9999999.9_wp |
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| 244 | ENDIF |
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| 245 | ENDIF |
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| 246 | |
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| 247 | ! |
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| 248 | !-- If the run is stopped, set a flag file which is necessary to initiate |
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| 249 | !-- the start of a continuation run, except if the user forced to stop the |
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| 250 | !-- run without restart |
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| 251 | IF ( terminate_run .AND. myid == 0 .AND. .NOT. do_stop_now) THEN |
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| 252 | |
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| 253 | OPEN ( 90, FILE='CONTINUE_RUN', FORM='FORMATTED' ) |
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| 254 | WRITE ( 90, '(A)' ) TRIM( run_description_header ) |
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| 255 | CLOSE ( 90 ) |
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| 256 | |
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| 257 | ENDIF |
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| 258 | |
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| 259 | |
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| 260 | END SUBROUTINE check_for_restart |
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