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mlosch |
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C $Header: $ |
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C $Name: $ |
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CBOI |
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C This is a dummy model main to initialize and invoke the cg2d routine. Most of the |
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C guts of the model have been taken out. |
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C |
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C CLW, clwolfe@ucsd.edu November 2009 |
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C |
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CEOI |
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#include "AD_CONFIG.h" |
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#include "PACKAGES_CONFIG.h" |
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#include "CPP_OPTIONS.h" |
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CBOP |
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C !ROUTINE: THE_MODEL_MAIN |
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C !INTERFACE: |
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SUBROUTINE THE_MODEL_MAIN(myThid) |
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IMPLICIT NONE |
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C !DESCRIPTION: \bv |
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C *==========================================================* |
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C | SUBROUTINE THE_MODEL_MAIN |
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C | o Master controlling routine for model using the MITgcm |
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C | UV parallel wrapper. |
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C *==========================================================* |
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C | THE_MODEL_MAIN is invoked by the MITgcm UV parallel |
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C | wrapper with a single integer argument "myThid". This |
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C | variable identifies the thread number of an instance of |
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C | THE_MODEL_MAIN. Each instance of THE_MODEL_MAIN works |
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C | on a particular region of the models domain and |
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C | synchronises with other instances as necessary. The |
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C | routine has to "understand" the MITgcm parallel |
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C | environment and the numerical algorithm. Editing this |
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C | routine is best done with some knowledge of both aspects. |
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C | Notes |
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C | ===== |
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C | This variant of THE_MODEL_MAIN has been stripped down to |
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C | call difference variants of the conjugate gradient solver |
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C | and compare results and performance |
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C *==========================================================* |
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C \ev |
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C !USES: |
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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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C !INPUT/OUTPUT PARAMETERS: |
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C == Routine arguments == |
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C myThid - Thread number for this instance of the routine. |
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INTEGER myThid |
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C !LOCAL VARIABLES: |
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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 myCurrentTime - Time counter for this thread |
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C myCurrentIter - Iteration counter for this thread |
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INTEGER myCurrentIter |
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_RL myCurrentTime |
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logical exst |
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logical lastdiva |
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_RL firstResidual1,lastResidual1 |
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_RL firstResidual2,lastResidual2 |
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INTEGER numIters1, numIters2 |
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INTEGER ks,i,nIter |
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_RL cg2d_b(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RL cg2d_x1(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RL cg2d_x2(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RL port_rand |
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CEOP |
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c-- set default: |
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lastdiva = .TRUE. |
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#ifdef ALLOW_DEBUG |
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IF (debugMode) CALL DEBUG_ENTER('THE_MODEL_MAIN',myThid) |
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#endif |
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C-- This timer encompasses the whole code |
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CALL TIMER_START('ALL [THE_MODEL_MAIN]',myThid) |
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#ifdef ALLOW_DEBUG |
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IF (debugMode) CALL DEBUG_CALL('INITIALISE_FIXED',myThid) |
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#endif |
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C-- Set model configuration (fixed arrays) |
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CALL TIMER_START('INITIALISE_FIXED [THE_MODEL_MAIN]',myThid) |
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CALL INITIALISE_FIXED( myThid ) |
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CALL TIMER_STOP ('INITIALISE_FIXED [THE_MODEL_MAIN]',myThid) |
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myCurrentTime = startTime |
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myCurrentIter = nIter0 |
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#ifdef ALLOW_DEBUG |
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IF (debugMode) CALL DEBUG_CALL('THE_MAIN_LOOP',myThid) |
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#endif |
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C-- Call time stepping loop of full model |
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C firstResidual1 = port_rand(1618033.+myProcId) |
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DO I=1, nTimeSteps |
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nIter = nIter0 + I |
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C-- Initialize RHS for 2DCG solver. |
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CALL INI_RHS(cg2d_b,cg2d_x1,cg2d_x2,myThid) |
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firstResidual1=0. |
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lastResidual1=0. |
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firstResidual2=0. |
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lastResidual2=0. |
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numIters1=cg2dMaxIters |
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numIters2=cg2dMaxIters |
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CALL TIMER_START('CG2D [THE_MODEL_MAIN]',myThid) |
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CALL CG2D(cg2d_b, |
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& cg2d_x1, |
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& firstResidual1, |
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& lastResidual1, |
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& numIters1, |
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& myThid ) |
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CALL TIMER_STOP('CG2D [THE_MODEL_MAIN]',myThid) |
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_BEGIN_MASTER(myThid) |
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WRITE(*,'(1x,a,i5,2(4x,a,e15.7),(4x,a,i5))') 'CG2D: ', i, |
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& 'firstResidual =',firstResidual1, |
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& 'lastResidual =',lastResidual1, |
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& 'numIters =',numIters1 |
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_END_MASTER(myThid) |
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CALL TIMER_START('CG2D_SR [THE_MODEL_MAIN]',myThid) |
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CALL CG2D_SR(cg2d_b, |
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& cg2d_x2, |
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& firstResidual2, |
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& lastResidual2, |
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& numIters2, |
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& myThid ) |
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CALL TIMER_STOP('CG2D_SR [THE_MODEL_MAIN]',myThid) |
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_BEGIN_MASTER(myThid) |
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WRITE(*,'(1x,a,i5,2(4x,a,e15.7),(4x,a,i5))') 'CG2D_SR: ', i, |
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& 'firstResidual =',firstResidual2, |
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& 'lastResidual =',lastResidual2, |
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& 'numIters =',numIters2 |
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_END_MASTER(myThid) |
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ENDDO |
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CALL WRITE_REC_XY_RL('rhs',cg2d_b,1,1,myThid) |
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CALL WRITE_REC_XY_RL('soln',cg2d_x1,1,1,myThid) |
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CALL WRITE_REC_XY_RL('soln_sr',cg2d_x2,1,1,myThid) |
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#ifdef ALLOW_MNC |
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IF (useMNC) THEN |
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C Close all open NetCDF files |
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_BEGIN_MASTER( mythid ) |
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CALL MNC_FILE_CLOSE_ALL( myThid ) |
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_END_MASTER( mythid ) |
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ENDIF |
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#endif |
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C-- This timer encompasses the whole code |
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CALL TIMER_STOP ('ALL [THE_MODEL_MAIN]',myThid) |
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C-- Write timer statistics |
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IF ( myThid .EQ. 1 ) THEN |
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CALL TIMER_PRINTALL( myThid ) |
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CALL COMM_STATS |
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ENDIF |
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C-- Check threads synchronization : |
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CALL BAR_CHECK( 9, myThid ) |
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#ifdef ALLOW_DEBUG |
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IF (debugMode) CALL DEBUG_LEAVE('THE_MODEL_MAIN',myThid) |
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#endif |
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RETURN |
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END |
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