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C $Header: /u/gcmpack/MITgcm/pkg/exf/exf_interp_read.F,v 1.14 2011/06/07 22:19:48 jmc Exp $ |
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C $Name: $ |
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|
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#include "EXF_OPTIONS.h" |
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|
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CBOP |
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C !ROUTINE: EXF_INTERP_READ |
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C !INTERFACE: |
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SUBROUTINE EXF_INTERP_READ( |
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I infile, filePrec, |
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O arrayin, |
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I irecord, nx_in, ny_in, myThid ) |
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|
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C !DESCRIPTION: |
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|
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C !USES: |
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IMPLICIT NONE |
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|
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C Global variables / common blocks |
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#include "SIZE.h" |
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#include "EEPARAMS.h" |
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#include "EXF_PARAM.h" |
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#ifdef ALLOW_USE_MPI |
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# include "EESUPPORT.h" |
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#endif /* ALLOW_USE_MPI */ |
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#include "PARAMS.h" |
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|
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|
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C !INPUT/OUTPUT PARAMETERS: |
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C infile (string) :: name of the binary input file (direct access) |
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C filePrec (integer) :: number of bits per word in file (32 or 64) |
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C arrayin ( _RL ) :: array to read file into |
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C irecord (integer) :: record number to read |
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C nx_in,ny_in (integer) :: size in x & y direction of input file to read |
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C myThid (integer) :: My Thread Id number |
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|
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CHARACTER*(*) infile |
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INTEGER filePrec, irecord, nx_in, ny_in |
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_RL arrayin( -1:nx_in+2 , -1:ny_in+2 ) |
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INTEGER myThid |
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CEOP |
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|
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C !FUNCTIONS |
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INTEGER ILNBLNK |
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INTEGER MDS_RECLEN |
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LOGICAL MASTER_CPU_IO |
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EXTERNAL ILNBLNK |
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EXTERNAL MDS_RECLEN |
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EXTERNAL MASTER_CPU_IO |
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|
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C !LOCAL VARIABLES |
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INTEGER i, j |
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INTEGER ioUnit, length_of_rec, IL |
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CHARACTER*(MAX_LEN_MBUF) msgBuf |
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LOGICAL exst |
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#ifdef EXF_INTERP_USE_DYNALLOC |
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#ifdef EXF_IREAD_USE_GLOBAL_POINTER |
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C When using threads the address of the local automatic array |
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C "buffer" is not visible to the other threads. So we create |
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C a pointer to share that address here. This is presently |
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C in an ifdef because it won't go through g77 and I'm not |
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C currently sure what TAF would do with this. |
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COMMON /EXF_IOPTR8/ glPtr8 |
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REAL*8, POINTER :: glPtr8(:,:) |
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COMMON /EXF_IOPTR4/ glPtr4 |
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REAL*4, POINTER :: glPtr4(:,:) |
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|
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Real*8, target :: buffer_r8(nx_in,ny_in) |
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Real*4, target :: buffer_r4(nx_in,ny_in) |
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#else /* ndef EXF_IREAD_USE_GLOBAL_POINTER */ |
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Real*8 buffer_r8(nx_in,ny_in) |
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Real*4 buffer_r4(nx_in,ny_in) |
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#endif /* ndef EXF_IREAD_USE_GLOBAL_POINTER */ |
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#else /* ndef EXF_INTERP_USE_DYNALLOC */ |
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Real*8 buffer_r8(exf_interp_bufferSize) |
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Real*4 buffer_r4(exf_interp_bufferSize) |
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COMMON /EXF_INTERP_BUFFER/ buffer_r8, buffer_r4 |
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INTEGER ijs |
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#endif /* ndef EXF_INTERP_USE_DYNALLOC */ |
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#ifdef ALLOW_USE_MPI |
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INTEGER ierr |
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#endif |
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|
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C-- Check for consistency: |
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#ifdef EXF_INTERP_USE_DYNALLOC |
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#ifndef EXF_IREAD_USE_GLOBAL_POINTER |
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C The CPP symbol EXF_IREAD_USE_GLOBAL_POINTER must be defined for the |
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C case of nThreads > 1. Stop IF it isnt. |
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IF ( nThreads .GT. 1 ) THEN |
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STOP |
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&'EXF_INTERP_READ: nThreads > 1 needs EXF_IREAD_USE_GLOBAL_POINTER' |
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ENDIF |
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#endif |
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#else /* ndef EXF_INTERP_USE_DYNALLOC */ |
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#ifdef EXF_IREAD_USE_GLOBAL_POINTER |
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STOP |
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&'EXF_INTERP_READ: USE_GLOBAL_POINTER needs INTERP_USE_DYNALLOC' |
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#endif |
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IF ( nx_in*ny_in .GT. exf_interp_bufferSize ) THEN |
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STOP 'EXF_INTERP_READ: exf_interp_bufferSize too small' |
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ENDIF |
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#endif /* ndef EXF_INTERP_USE_DYNALLOC */ |
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|
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C-- before starting to read, wait for everyone to finish |
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_BARRIER |
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|
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C--- read in input data |
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|
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IF ( MASTER_CPU_IO(myThid) ) THEN |
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C-- master thread of process 0, only, opens a global file |
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|
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IL = ILNBLNK( infile ) |
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INQUIRE( file=infile, exist=exst ) |
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IF (exst) THEN |
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IF ( debugLevel.GE.debLevB ) THEN |
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WRITE(msgBuf,'(A,A)') |
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& ' EXF_INTERP_READ: opening file: ',infile(1:IL) |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT , myThid) |
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ENDIF |
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ELSE |
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WRITE(msgBuf,'(2A)') |
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& ' EXF_INTERP_READ: filename: ', infile(1:IL) |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT , myThid) |
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CALL PRINT_ERROR( msgBuf, myThid ) |
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WRITE(msgBuf,'(A)') |
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& ' EXF_INTERP_READ: File does not exist' |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT , myThid) |
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CALL PRINT_ERROR( msgBuf, myThid ) |
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STOP 'ABNORMAL END: S/R EXF_INTERP_READ' |
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ENDIF |
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|
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CALL MDSFINDUNIT( ioUnit, myThid ) |
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length_of_rec=MDS_RECLEN( filePrec, nx_in*ny_in, myThid ) |
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OPEN( ioUnit, file=infile, status='old', access='direct', |
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& recl=length_of_rec ) |
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IF ( filePrec .EQ. 32 ) THEN |
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#ifdef EXF_INTERP_USE_DYNALLOC |
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READ(ioUnit,rec=irecord) buffer_r4 |
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#else |
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READ(ioUnit,rec=irecord) (buffer_r4(i),i=1,nx_in*ny_in) |
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#endif |
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#ifdef _BYTESWAPIO |
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CALL MDS_BYTESWAPR4(nx_in*ny_in,buffer_r4) |
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#endif /* _BYTESWAPIO */ |
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ELSE |
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#ifdef EXF_INTERP_USE_DYNALLOC |
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READ(ioUnit,rec=irecord) buffer_r8 |
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#else |
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READ(ioUnit,rec=irecord) (buffer_r8(i),i=1,nx_in*ny_in) |
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#endif |
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#ifdef _BYTESWAPIO |
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CALL MDS_BYTESWAPR8(nx_in*ny_in,buffer_r8) |
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#endif /* _BYTESWAPIO */ |
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ENDIF |
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CLOSE( ioUnit ) |
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C-- end if MASTER_CPU_IO |
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ENDIF |
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|
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_BEGIN_MASTER( myThid ) |
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#ifdef ALLOW_USE_MPI |
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C-- broadcast to all processes |
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IF ( useSingleCpuInput ) THEN |
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IF ( filePrec .EQ. 32 ) THEN |
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CALL MPI_BCAST(buffer_r4,nx_in*ny_in,MPI_REAL, |
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& 0,MPI_COMM_MODEL,ierr) |
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ELSE |
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CALL MPI_BCAST(buffer_r8,nx_in*ny_in,MPI_DOUBLE_PRECISION, |
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& 0,MPI_COMM_MODEL,ierr) |
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ENDIF |
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ENDIF |
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#endif /* ALLOW_USE_MPI */ |
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|
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#ifdef EXF_IREAD_USE_GLOBAL_POINTER |
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IF ( filePrec .EQ. 32 ) THEN |
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glPtr4 => buffer_r4 |
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ELSE |
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glPtr8 => buffer_r8 |
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ENDIF |
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#endif |
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_END_MASTER( myThid ) |
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_BARRIER |
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|
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C--- Transfer buffer to "arrayin" array: |
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#ifdef EXF_INTERP_USE_DYNALLOC |
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#ifdef EXF_IREAD_USE_GLOBAL_POINTER |
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IF ( filePrec .EQ. 32 ) THEN |
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DO j=1,ny_in |
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DO i=1,nx_in |
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arrayin(i,j)=glPtr4(i,j) |
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ENDDO |
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ENDDO |
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ELSE |
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DO j=1,ny_in |
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DO i=1,nx_in |
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arrayin(i,j)=glPtr8(i,j) |
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ENDDO |
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ENDDO |
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ENDIF |
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#else /* ndef EXF_IREAD_USE_GLOBAL_POINTER */ |
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IF ( filePrec .EQ. 32 ) THEN |
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DO j=1,ny_in |
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DO i=1,nx_in |
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arrayin(i,j)=buffer_r4(i,j) |
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ENDDO |
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ENDDO |
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ELSE |
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DO j=1,ny_in |
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DO i=1,nx_in |
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arrayin(i,j)=buffer_r8(i,j) |
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ENDDO |
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ENDDO |
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ENDIF |
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#endif /* ndef EXF_IREAD_USE_GLOBAL_POINTER */ |
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#else /* ndef EXF_INTERP_USE_DYNALLOC */ |
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IF ( filePrec .EQ. 32 ) THEN |
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DO j=1,ny_in |
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ijs = (j-1)*nx_in |
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DO i=1,nx_in |
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arrayin(i,j)=buffer_r4(i+ijs) |
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ENDDO |
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ENDDO |
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ELSE |
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DO j=1,ny_in |
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ijs = (j-1)*nx_in |
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DO i=1,nx_in |
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arrayin(i,j)=buffer_r8(i+ijs) |
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ENDDO |
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ENDDO |
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ENDIF |
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#endif /* ndef EXF_INTERP_USE_DYNALLOC */ |
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|
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RETURN |
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END |
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