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C $Header: /u/gcmpack/models/MITgcmUV/eesupp/src/main.F,v 1.5 1998/10/28 03:11:35 cnh Exp $ |
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|
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C-- Get C preprocessor options |
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#include "CPP_OPTIONS.h" |
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#include "CPP_EEOPTIONS.h" |
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|
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PROGRAM MAIN |
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C /==========================================================\ |
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C | PROGRAM MAIN | |
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C | o MAIN wrapper for MITgcm UV implementation. | |
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C |==========================================================| |
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C | MAIN controls the "execution environment". | |
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C | Its main functions are | |
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C | 1. call procedure EEBOOT to perform execution environment| |
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C | initialisation. | |
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C | 2. call procedure THE_MODEL_MAIN once for each concurrent| |
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C | thread. THE_MODEL_MAIN is the user supplied top-level | |
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C | routine. | |
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C | 3. call procedure EEDIE to perform execution environment | |
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C | shutdown. | |
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C \==========================================================/ |
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IMPLICIT NONE |
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|
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C == Global variables == |
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C Include all the "shared" data here. That means all common |
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C blocks used in the model. On many implementations this is not |
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C necessary but doing this is the safest method. |
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#include "SIZE.h" |
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#include "EEPARAMS.h" |
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#include "EESUPPORT.h" |
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#include "THE_MODEL_COMMON_BLOCKS.h" |
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|
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C-- Local variables |
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INTEGER myThid |
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INTEGER I |
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|
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C-- Set up the execution environment |
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C EEBOOT loads a execution environment parameter file |
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C ( called "eedata" by default ) and sets variables |
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C accordingly. |
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CALL EEBOOT |
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|
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C-- Trap errors |
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IF ( eeBootError ) THEN |
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fatalError = .TRUE. |
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GOTO 999 |
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ENDIF |
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|
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C-- Start nThreads concurrent threads. |
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C Note: We do a fiddly check here. The check is performed |
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C by CHECK_THREADS. CHECK_THREADS does a count |
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C of all the threads. If after ten seconds it has not |
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C found nThreads threads are running it flags an |
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C error. This traps the case in which the input |
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C parameter nThreads is different from the actual |
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C number of concurrent threads the OS gives us. This |
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C case causes a deadlock if we do not trap it here. |
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#include "MAIN_PDIRECTIVES1.h" |
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DO I=1,nThreads |
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myThid = I |
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|
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C-- Do check to see if there are nThreads threads running |
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IF ( .NOT. eeBootError ) THEN |
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CALL CHECK_THREADS( myThid ) |
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ENDIF |
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|
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C-- Invoke nThreads instances of the numerical model |
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IF ( .NOT. eeBootError ) THEN |
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CALL THE_MODEL_MAIN(myThid) |
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ENDIF |
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|
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C-- Each threads sets flag indicating it is done |
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threadIsComplete(myThid) = .TRUE. |
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IF ( .NOT. eeBootError ) THEN |
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_BARRIER |
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ENDIF |
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ENDDO |
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#include "MAIN_PDIRECTIVES2.h" |
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|
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999 CONTINUE |
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C-- Shut down execution environment |
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CALL EEDIE |
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|
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C-- Write closedown status |
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IF ( fatalError ) THEN |
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STOP 'ABNORMAL END: PROGRAM MAIN' |
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ELSE |
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STOP 'NORMAL END' |
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ENDIF |
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C |
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END |
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