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C $Header: /u/gcmpack/models/MITgcmUV/model/src/the_main_loop.F,v 1.4 2001/02/14 22:50:10 jmc Exp $ |
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C $Name: $ |
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#include "CPP_OPTIONS.h" |
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|
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SUBROUTINE THE_MAIN_LOOP(myCurrentTime, myCurrentIter, myThid ) |
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C /==========================================================\ |
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C | SUBROUTINE THE_MAIN_LOOP | |
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C | o This contains the principal time loop | |
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C |==========================================================| |
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C | THE_MAIN_LOOP is invoked by THE_MODEL_MAIN | |
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C \==========================================================/ |
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IMPLICIT NONE |
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C |
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C Call Tree |
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C ========= |
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C |
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C |-THE_MODEL_MAIN |
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C | | |
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C | |-THE_MAIN_LOOP |
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C | | | |
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C | | |--INITIALISE_VARIA |
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C | | | o Set initial conditions (variable arrays) |
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C | | | |
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C ==> | | | ** Time stepping loop starts here ** |
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C | | | | |
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C /|\ | | | |
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C | | | |--FORWARD_STEP |
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C /|\ | | | |
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C | | | | |
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C |<== | | | ** Time stepping loop finishes here ** |
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C |
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|
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C == Global variables === |
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#include "SIZE.h" |
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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#include "DYNVARS.h" |
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#ifdef ALLOW_NONHYDROSTATIC |
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#include "CG3D.h" |
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#endif |
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|
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C == Routine arguments == |
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C myCurrentTime - Time counter for this thread |
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C myCurrentIter - Iteration counter for this thread |
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C myThid - Thread number for this instance of the routine. |
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INTEGER myCurrentIter, myThid |
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_RL myCurrentTime |
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|
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C == Local variables == |
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C Note: Under the multi-threaded model myCurrentIter and |
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C myCurrentTime are local variables passed around as routine |
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C arguments. Although this is fiddly it saves the need to |
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C impose additional synchronisation points when they are |
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C updated. |
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C ILOOP - Loop counter |
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INTEGER ILOOP |
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|
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CALL TIMER_START('SPIN-UP [THE_MAIN_LOOP]',myThid) |
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|
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C-- Set initial conditions (variable arrays) |
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CALL TIMER_START('INITIALISE_VARIA [THE_MAIN_LOOP]',myThid) |
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CALL INITIALISE_VARIA( myThid ) |
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CALL TIMER_STOP ('INITIALISE_VARIA [THE_MAIN_LOOP]',myThid) |
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|
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C-- Dump starting state |
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CALL TIMER_START('I/O (WRITE) [THE_MAIN_LOOP]',myThid) |
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CALL WRITE_STATE( .TRUE., myCurrentTime, myCurrentIter, myThid ) |
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CALL TIMER_STOP ('I/O (WRITE) [THE_MAIN_LOOP]',myThid) |
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|
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CALL TIMER_STOP ('SPIN-UP [THE_MAIN_LOOP]',myThid) |
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|
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C =========================================================== |
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C-- Begin time stepping loop |
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CALL TIMER_START('MAIN LOOP [THE_MAIN_LOOP]',myThid) |
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DO ILOOP=1, nTimeSteps |
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|
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C-- Step forward fields and calculate time tendency terms |
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CALL TIMER_START('FORWARD_STEP [THE_MAIN_LOOP]',myThid) |
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CALL FORWARD_STEP( ILOOP, |
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& myCurrentTime, myCurrentIter, myThid ) |
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CALL TIMER_STOP ('FORWARD_STEP [THE_MAIN_LOOP]',myThid) |
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|
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ENDDO |
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CALL TIMER_STOP ('MAIN LOOP [THE_MAIN_LOOP]',myThid) |
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C =========================================================== |
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|
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CALL TIMER_START('SPIN-DOWN [THE_MAIN_LOOP]',myThid) |
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|
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C-- Final checkpoint (incase the in-loop checkpoint was missed) |
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CALL TIMER_START('I/O (WRITE) [THE_MAIN_LOOP]',myThid) |
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CALL WRITE_CHECKPOINT( |
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& .TRUE., myCurrentTime, myCurrentIter, myThid ) |
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CALL TIMER_STOP ('I/O (WRITE) [THE_MAIN_LOOP]',myThid) |
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|
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C-- Write the final state |
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CALL TIMER_START('I/O (WRITE) [THE_MAIN_LOOP]',myThid) |
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CALL WRITE_STATE( .TRUE., myCurrentTime, myCurrentIter, myThid ) |
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CALL TIMER_STOP ('I/O (WRITE) [THE_MAIN_LOOP]',myThid) |
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|
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RETURN |
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END |
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