| 1 | !> @file check_for_restart.f90 |
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| 2 | !--------------------------------------------------------------------------------------------------! |
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| 3 | ! This file is part of the PALM model system. |
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| 4 | ! |
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| 5 | ! PALM is free software: you can redistribute it and/or modify it under the terms of the GNU General |
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| 6 | ! Public License as published by the Free Software Foundation, either version 3 of the License, or |
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| 7 | ! (at your option) any later version. |
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| 8 | ! |
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| 9 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the |
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| 10 | ! implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
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| 11 | ! Public License for more details. |
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| 12 | ! |
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| 13 | ! You should have received a copy of the GNU General Public License along with PALM. If not, see |
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| 14 | ! <http://www.gnu.org/licenses/>. |
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| 15 | ! |
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| 16 | ! Copyright 1997-2021 Leibniz Universitaet Hannover |
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| 17 | !--------------------------------------------------------------------------------------------------! |
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| 18 | ! |
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| 19 | ! Current revisions: |
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| 20 | ! ----------------- |
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| 21 | ! |
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| 22 | ! |
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| 23 | ! Former revisions: |
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| 24 | ! ----------------- |
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| 25 | ! $Id: check_for_restart.f90 4828 2021-01-05 11:21:41Z Giersch $ |
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| 26 | ! file re-formatted to follow the PALM coding standard |
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| 27 | ! |
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| 28 | ! 4360 2020-01-07 11:25:50Z suehring |
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| 29 | ! Corrected "Former revisions" section |
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| 30 | ! |
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| 31 | ! 3655 2019-01-07 16:51:22Z knoop |
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| 32 | ! Error messages revised |
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| 33 | ! |
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| 34 | ! Revision 1.1 1998/03/18 20:06:51 raasch |
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| 35 | ! Initial revision |
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| 36 | ! |
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| 37 | ! |
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| 38 | ! Description: |
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| 39 | ! ------------ |
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| 40 | !> Set stop flag, if restart is neccessary because of expiring cpu-time or if it is forced by user. |
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| 41 | !--------------------------------------------------------------------------------------------------! |
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| 42 | SUBROUTINE check_for_restart |
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| 43 | |
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| 44 | |
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| 45 | USE control_parameters, & |
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| 46 | ONLY: coupling_mode, dt_restart, end_time, message_string, run_description_header, & |
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| 47 | simulated_time, terminate_coupled, terminate_coupled_remote, terminate_run, & |
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| 48 | termination_time_needed, time_restart, time_since_reference_point, write_binary |
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| 49 | |
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| 50 | USE kinds |
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| 51 | |
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| 52 | USE pegrid |
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| 53 | |
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| 54 | USE pmc_interface, & |
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| 55 | ONLY: comm_world_nesting, cpl_id, nested_run |
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| 56 | |
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| 57 | IMPLICIT NONE |
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| 58 | |
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| 59 | INTEGER :: global_communicator !< global communicator to be used here |
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| 60 | |
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| 61 | LOGICAL :: terminate_run_l !< |
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| 62 | LOGICAL :: do_stop_now = .FALSE. !< |
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| 63 | LOGICAL :: do_restart_now = .FALSE. !< |
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| 64 | |
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| 65 | REAL(wp) :: remaining_time !< |
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| 66 | |
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| 67 | |
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| 68 | ! |
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| 69 | !-- Check remaining CPU-time |
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| 70 | CALL local_tremain( remaining_time ) |
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| 71 | |
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| 72 | ! |
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| 73 | !-- If necessary set a flag to stop the model run |
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| 74 | terminate_run_l = .FALSE. |
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| 75 | IF ( remaining_time <= termination_time_needed .AND. write_binary ) THEN |
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| 76 | |
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| 77 | terminate_run_l = .TRUE. |
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| 78 | ENDIF |
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| 79 | |
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| 80 | ! |
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| 81 | !-- Set the global communicator to be used (depends on the mode in which PALM is running) |
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| 82 | IF ( nested_run ) THEN |
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| 83 | global_communicator = comm_world_nesting |
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| 84 | ELSE |
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| 85 | global_communicator = comm2d |
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| 86 | ENDIF |
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| 87 | |
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| 88 | #if defined( __parallel ) |
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| 89 | ! |
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| 90 | !-- Make a logical OR for all processes. Stop the model run if at least one process has reached the |
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| 91 | !-- time limit. |
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| 92 | IF ( collective_wait ) CALL MPI_BARRIER( global_communicator, ierr ) |
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| 93 | CALL MPI_ALLREDUCE( terminate_run_l, terminate_run, 1, MPI_LOGICAL, MPI_LOR, & |
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| 94 | global_communicator, ierr ) |
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| 95 | #else |
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| 96 | terminate_run = terminate_run_l |
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| 97 | #endif |
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| 98 | |
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| 99 | ! |
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| 100 | !-- Output that job will be terminated |
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| 101 | IF ( terminate_run .AND. myid == 0 ) THEN |
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| 102 | WRITE( message_string, * ) 'run will be terminated because it is ', & |
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| 103 | 'running out of job cpu limit & ', & |
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| 104 | 'remaining time: ', remaining_time, ' s &', & |
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| 105 | 'termination time needed:', termination_time_needed, ' s' |
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| 106 | CALL message( 'check_for_restart', 'PA0163', 0, 1, 0, 6, 0 ) |
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| 107 | ENDIF |
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| 108 | |
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| 109 | ! |
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| 110 | !-- In case of coupled runs inform the remote model of the termination and its reason, provided the |
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| 111 | !-- remote model has not already been informed of another termination reason (terminate_coupled > 0) |
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| 112 | !-- before, or vice versa (terminate_coupled_remote > 0). |
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| 113 | IF ( terminate_run .AND. TRIM( coupling_mode ) /= 'uncoupled' .AND. & |
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| 114 | terminate_coupled == 0 .AND. terminate_coupled_remote == 0 ) THEN |
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| 115 | |
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| 116 | terminate_coupled = 3 |
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| 117 | |
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| 118 | #if defined( __parallel ) |
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| 119 | IF ( myid == 0 ) THEN |
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| 120 | CALL MPI_SENDRECV( terminate_coupled, 1, MPI_INTEGER, & |
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| 121 | target_id, 0, & |
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| 122 | terminate_coupled_remote, 1, MPI_INTEGER, & |
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| 123 | target_id, 0, & |
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| 124 | comm_inter, status, ierr ) |
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| 125 | ENDIF |
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| 126 | CALL MPI_BCAST( terminate_coupled_remote, 1, MPI_INTEGER, 0, comm2d, ierr ) |
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| 127 | #endif |
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| 128 | ENDIF |
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| 129 | |
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| 130 | |
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| 131 | ! |
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| 132 | !-- Check if a flag file exists that forces a termination of the model. |
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| 133 | IF ( myid == 0 ) THEN |
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| 134 | INQUIRE(FILE="DO_STOP_NOW", EXIST=do_stop_now) |
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| 135 | INQUIRE(FILE="DO_RESTART_NOW", EXIST=do_restart_now) |
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| 136 | |
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| 137 | IF ( do_stop_now .OR. do_restart_now ) THEN |
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| 138 | |
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| 139 | terminate_run_l = .TRUE. |
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| 140 | |
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| 141 | WRITE( message_string, * ) 'run will be terminated because user ', & |
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| 142 | 'forced a job finalization using a flag', & |
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| 143 | 'file:', & |
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| 144 | '&DO_STOP_NOW: ', do_stop_now, & |
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| 145 | '&DO_RESTART_NOW: ', do_restart_now |
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| 146 | CALL message( 'check_for_restart', 'PA0398', 0, 0, 0, 6, 0 ) |
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| 147 | |
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| 148 | ENDIF |
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| 149 | ENDIF |
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| 150 | |
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| 151 | |
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| 152 | #if defined( __parallel ) |
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| 153 | ! |
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| 154 | !-- Make a logical OR for all processes. Stop the model run if a flag file has been detected above. |
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| 155 | IF ( collective_wait ) CALL MPI_BARRIER( global_communicator, ierr ) |
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| 156 | CALL MPI_ALLREDUCE( terminate_run_l, terminate_run, 1, MPI_LOGICAL, MPI_LOR, & |
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| 157 | global_communicator, ierr ) |
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| 158 | #else |
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| 159 | terminate_run = terminate_run_l |
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| 160 | #endif |
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| 161 | |
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| 162 | ! |
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| 163 | !-- In case of coupled runs inform the remote model of the termination and its reason, provided the |
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| 164 | !-- remote model has not already been informed of another termination reason (terminate_coupled > 0) |
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| 165 | !-- before, or vice versa (terminate_coupled_remote > 0). |
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| 166 | IF ( terminate_run .AND. coupling_mode /= 'uncoupled' .AND. & |
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| 167 | terminate_coupled == 0 .AND. terminate_coupled_remote == 0 ) THEN |
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| 168 | |
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| 169 | terminate_coupled = 6 |
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| 170 | |
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| 171 | #if defined( __parallel ) |
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| 172 | IF ( myid == 0 ) THEN |
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| 173 | CALL MPI_SENDRECV( terminate_coupled, 1, MPI_INTEGER, & |
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| 174 | target_id, 0, & |
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| 175 | terminate_coupled_remote, 1, MPI_INTEGER, & |
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| 176 | target_id, 0, & |
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| 177 | comm_inter, status, ierr ) |
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| 178 | ENDIF |
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| 179 | CALL MPI_BCAST( terminate_coupled_remote, 1, MPI_INTEGER, 0, comm2d, ierr ) |
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| 180 | #endif |
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| 181 | |
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| 182 | ENDIF |
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| 183 | |
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| 184 | ! |
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| 185 | !-- Set the stop flag also, if restart is forced by user settings |
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| 186 | IF ( time_restart /= 9999999.9_wp .AND. time_restart < time_since_reference_point ) THEN |
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| 187 | |
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| 188 | ! |
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| 189 | !-- Restart is not neccessary, if the end time of the run (given by the user) has been reached. |
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| 190 | IF ( simulated_time < end_time ) THEN |
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| 191 | terminate_run = .TRUE. |
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| 192 | ! |
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| 193 | !-- Increment restart time, if forced by user, otherwise set restart time to default (no user |
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| 194 | !-- restart). |
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| 195 | IF ( dt_restart /= 9999999.9_wp ) THEN |
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| 196 | time_restart = time_restart + dt_restart |
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| 197 | ELSE |
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| 198 | time_restart = 9999999.9_wp |
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| 199 | ENDIF |
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| 200 | |
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| 201 | WRITE( message_string, * ) 'run will be terminated due to user ', & |
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| 202 | 'settings of ', & |
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| 203 | 'restart_time / dt_restart, ', & |
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| 204 | 'new restart time is: ', time_restart, ' s' |
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| 205 | CALL message( 'check_for_restart', 'PA0164', 0, 0, 0, 6, 0 ) |
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| 206 | |
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| 207 | ! |
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| 208 | !-- In case of coupled runs inform the remote model of the termination and its reason, |
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| 209 | !-- provided the remote model has not already been informed of another termination reason |
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| 210 | !-- (terminate_coupled > 0) before, or vice versa (terminate_coupled_remote > 0). |
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| 211 | IF ( coupling_mode /= 'uncoupled' .AND. terminate_coupled == 0 & |
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| 212 | .AND. terminate_coupled_remote == 0 ) THEN |
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| 213 | |
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| 214 | IF ( dt_restart /= 9999999.9_wp ) THEN |
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| 215 | terminate_coupled = 4 |
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| 216 | ELSE |
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| 217 | terminate_coupled = 5 |
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| 218 | ENDIF |
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| 219 | #if defined( __parallel ) |
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| 220 | IF ( myid == 0 ) THEN |
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| 221 | CALL MPI_SENDRECV( terminate_coupled, 1, MPI_INTEGER, & |
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| 222 | target_id, 0, & |
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| 223 | terminate_coupled_remote, 1, MPI_INTEGER, & |
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| 224 | target_id, 0, & |
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| 225 | comm_inter, status, ierr ) |
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| 226 | ENDIF |
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| 227 | CALL MPI_BCAST( terminate_coupled_remote, 1, MPI_INTEGER, 0, comm2d, ierr ) |
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| 228 | #endif |
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| 229 | ENDIF |
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| 230 | ELSE |
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| 231 | time_restart = 9999999.9_wp |
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| 232 | ENDIF |
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| 233 | ENDIF |
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| 234 | |
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| 235 | ! |
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| 236 | !-- If the run is stopped, set a flag file which is necessary to initiate the start of a |
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| 237 | !-- continuation run, except if the user forced to stop the run without restart. |
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| 238 | IF ( terminate_run .AND. myid == 0 .AND. cpl_id == 1 .AND. .NOT. do_stop_now) THEN |
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| 239 | |
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| 240 | OPEN ( 90, FILE='CONTINUE_RUN', FORM='FORMATTED' ) |
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| 241 | WRITE ( 90, '(A)' ) TRIM( run_description_header ) |
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| 242 | CLOSE ( 90 ) |
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| 243 | |
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| 244 | ENDIF |
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| 245 | |
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| 246 | |
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| 247 | END SUBROUTINE check_for_restart |
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