| 1 |
cnh |
1.1 |
C $Id$ |
| 2 |
|
|
|
| 3 |
|
|
#include "CPP_EEOPTIONS.h" |
| 4 |
|
|
|
| 5 |
|
|
SUBROUTINE THE_MODEL_MAIN(myThid) |
| 6 |
|
|
C /==========================================================\ |
| 7 |
|
|
C | SUBROUTINE THE_MODEL_MAIN | |
| 8 |
|
|
C | o Master controlling routine for model using the MITgcm | |
| 9 |
|
|
C | UV parallel wrapper. | |
| 10 |
|
|
C |==========================================================| |
| 11 |
|
|
C | THE_MODEL_MAIN is invoked by the MITgcm UV parallel | |
| 12 |
|
|
C | wrapper with a single integer argument "myThid". This | |
| 13 |
|
|
C | variable identifies the thread number of an instance of | |
| 14 |
|
|
C | THE_MODEL_MAIN. Each instance of THE_MODEL_MAIN works | |
| 15 |
|
|
C | on a particular region of the models domain and | |
| 16 |
|
|
C | synchronises with other instances as necessary. The | |
| 17 |
|
|
C | routine has to "understand" the MITgcm parallel | |
| 18 |
|
|
C | environment and the numerical algorithm. Editing this | |
| 19 |
|
|
C | routine is best done with some knowledge of both aspects.| |
| 20 |
|
|
C | Notes | |
| 21 |
|
|
C | ===== | |
| 22 |
|
|
C | C*P* comments indicating place holders for which code is | |
| 23 |
|
|
C | presently being developed. | |
| 24 |
|
|
C \==========================================================/ |
| 25 |
|
|
|
| 26 |
|
|
C == Global variables === |
| 27 |
|
|
#include "SIZE.h" |
| 28 |
|
|
#include "EEPARAMS.h" |
| 29 |
|
|
#include "PARAMS.h" |
| 30 |
|
|
#include "CG2D.h" |
| 31 |
|
|
#include "DYNVARS.h" |
| 32 |
|
|
|
| 33 |
|
|
C == Routine arguments == |
| 34 |
|
|
C myThid - Thread number for this instance of the routine. |
| 35 |
|
|
INTEGER myThid |
| 36 |
|
|
|
| 37 |
|
|
C == Local variables == |
| 38 |
|
|
C Note: Under the multi-threaded model myCurrentIter and myCurrentTime |
| 39 |
|
|
C are local variables passed around as routine arguments. Although |
| 40 |
|
|
C this is fiddly it saves the need to impose additional synchronisation |
| 41 |
|
|
C points when they are updated. |
| 42 |
|
|
C myCurrentIter - Iteration counter for this thread |
| 43 |
|
|
C myCurrentTime - Time counter for this thread |
| 44 |
|
|
C I - Loop counter |
| 45 |
|
|
INTEGER I, myCurrentIter |
| 46 |
|
|
REAL myCurrentTime |
| 47 |
|
|
|
| 48 |
|
|
C-- Set model initial conditions |
| 49 |
|
|
CALL INITIALISE( myThid ) |
| 50 |
|
|
myCurrentTime = startTime |
| 51 |
|
|
myCurrentIter = nIter0 |
| 52 |
|
|
|
| 53 |
|
|
C-- Begin time stepping loop |
| 54 |
|
|
DO I=1, nTimeSteps |
| 55 |
|
|
C-- Do IO if needed. |
| 56 |
|
|
CALL DO_THE_MODEL_IO( myCurrentIter, myThid ) |
| 57 |
|
|
|
| 58 |
|
|
C-- Load offline tracer fields |
| 59 |
|
|
IF ( MOD(myCurrentIter,numStepsPerPickup) .EQ. 1 ) THEN |
| 60 |
|
|
C I/O |
| 61 |
|
|
C o Writes to arrays are performed by their own thread (to ensure |
| 62 |
|
|
C physical memory allocation will pair with thread). |
| 63 |
|
|
C o Thread 1 reads into a buffer. |
| 64 |
|
|
C CALL LOAD_OFFLINE_FIELDS( myCurrentTime, myCurrentIter, myThid ) |
| 65 |
|
|
ENDIF |
| 66 |
|
|
|
| 67 |
|
|
C-- Step forward fields and calculate time tendency terms |
| 68 |
|
|
CALL DYNAMICS( myThid ) |
| 69 |
|
|
|
| 70 |
|
|
C-- Solve elliptic equation(s). |
| 71 |
|
|
C Two-dimensional only for conventional hydrostatic or three-dimensional |
| 72 |
|
|
C for non-hydrostatic and/or IGW scheme. |
| 73 |
|
|
CALL SOLVE_FOR_PRESSURE( myThid ) |
| 74 |
|
|
|
| 75 |
|
|
C-- Do "blocking" sends and receives for tendency "overlap" terms |
| 76 |
|
|
CALL DO_GTERM_BLOCKING_EXCHANGES( myThid ) |
| 77 |
|
|
|
| 78 |
|
|
myCurrentIter = myCurrentIter + 1 |
| 79 |
|
|
myCurrentTime = myCurrentTime + deltaTtracer |
| 80 |
|
|
|
| 81 |
|
|
C-- Save state for restarts |
| 82 |
|
|
C*P* CALL CHECKPOINT( myThid ) |
| 83 |
|
|
|
| 84 |
|
|
ENDDO |
| 85 |
|
|
|
| 86 |
|
|
RETURN |
| 87 |
|
|
END |
| 88 |
|
|
|
| 89 |
|
|
C $Id: $ |
Parent Directory
| 
Revision Log
| 
Revision Graph