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C $Header: /u/gcmpack/MITgcm/pkg/mdsio/mdsio_read_whalos.F,v 1.5 2011/01/19 23:20:24 gforget Exp $ |
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C $fName: $ |
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|
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#include "MDSIO_OPTIONS.h" |
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|
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CBOP |
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C !ROUTINE: mds_read_whalos |
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C !INTERFACE: |
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subroutine mds_read_whalos( |
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I fName, |
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I len, |
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I filePrec, |
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I fid, |
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I n2d, |
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O fldRL, |
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I irec, |
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I locSingleCPUIO, |
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I locBufferIO, |
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I mythid |
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& ) |
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|
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C !DESCRIPTION: \bv |
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c ================================================================== |
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c SUBROUTINE mds_read_whalos |
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c ================================================================== |
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c o Read file that includes halos. The main purpose is for |
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c adjoint related "tape I/O". The secondary purpose is debugging. |
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c ================================================================== |
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c SUBROUTINE mds_read_whalos |
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c ================================================================== |
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C \ev |
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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 == |
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#include "EEPARAMS.h" |
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#include "SIZE.h" |
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#include "PARAMS.h" |
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#ifdef ALLOW_WHIO |
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#include "MDSIO_BUFF_WH.h" |
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#endif |
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|
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C !INPUT/OUTPUT PARAMETERS: |
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c == routine arguments == |
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c fName - extended tape fName. |
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c len - number of characters in fName. |
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c filePrec - number of bits per word in file (32 or 64). |
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c fid - file unit (its use is not implemented yet). |
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C n2d - size of the fldRL third dimension. |
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c fldRL - array to read. |
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c irec - record number to be written. |
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c mythid - number of the thread or instance of the program. |
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|
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integer mythid |
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character*(*) fName |
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integer len |
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integer fid |
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integer filePrec |
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integer n2d |
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integer irec |
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_RL fldRL(1-Olx:sNx+Olx,1-Oly:sNy+Oly,n2d,nSx,nSy) |
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logical locSingleCPUIO, locBufferIO |
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CEOP |
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|
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#ifdef ALLOW_WHIO |
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C !LOCAL VARIABLES: |
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c == local variables == |
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|
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C sNxWh :: x tile size with halo included |
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C sNyWh :: y tile size with halo included |
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C pocNyWh :: processor sum of sNyWh |
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C gloNyWh :: global sum of sNyWh |
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INTEGER sNxWh |
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INTEGER sNyWh |
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INTEGER procNyWh |
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INTEGER gloNyWh |
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PARAMETER ( sNxWh = sNx+2*Olx ) |
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PARAMETER ( sNyWh = sNy+2*Oly ) |
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PARAMETER ( procNyWh = sNyWh*nSy*nSx ) |
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PARAMETER ( gloNyWh = procNyWh*nPy*nPx ) |
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|
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character*(MAX_LEN_FNAM) pfName |
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character*(MAX_LEN_MBUF) msgBuf |
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integer IL |
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integer bx,by |
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|
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integer lengthBuff, length_of_rec |
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integer i2d, i3d |
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integer i,j,k,bi,bj,ii |
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integer dUnit, irec2d |
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LOGICAL iAmDoingIO |
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|
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_RL fld2d(1:sNxWh,1:sNyWh,nSx,nSy) |
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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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EXTERNAL ILNBLNK |
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EXTERNAL MDS_RECLEN |
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|
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c == end of interface == |
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|
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#ifdef ALLOW_WHIO_3D |
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writeWh=.FALSE. |
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#endif |
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|
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IF ( .NOT.locSingleCpuIO ) then |
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lengthBuff=sNxWh*procNyWh |
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ELSE |
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lengthBuff=sNxWh*gloNyWh |
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ENDIF |
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|
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C Only do I/O if I am the master thread (and mpi process 0 IF locSingleCpuIO): |
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iAmDoingIO = .FALSE. |
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IF ( .NOT.locSingleCpuIO .OR. myProcId.EQ.0 ) THEN |
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_BEGIN_MASTER( myThid ) |
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iAmDoingIO = .TRUE. |
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_END_MASTER( myThid ) |
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ENDIF |
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|
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IF ( iAmDoingIO ) THEN |
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c get the unit and open file |
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IL = ILNBLNK( fName ) |
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IF ( .NOT.locSingleCpuIO ) THEN |
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WRITE(pfName,'(2A,I3.3,A)') fName(1:IL),'.',myProcId,'.data' |
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length_of_rec = MDS_RECLEN( filePrec,sNxWh*procNyWh, myThid ) |
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ELSE |
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WRITE(pfName,'(2A)') fName(1:IL),'.data' |
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length_of_rec = MDS_RECLEN( filePrec,sNxWh*gloNyWh,myThid) |
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ENDIF |
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IF (fid.EQ.0) THEN |
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CALL MDSFINDUNIT( dUnit, myThid ) |
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OPEN( dUnit, file=pfName, status='old', |
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& access='direct', recl=length_of_rec ) |
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ELSE |
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dUnit=fid |
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ENDIF |
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ENDIF |
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|
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|
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do i2d=1,n2d |
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|
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_BARRIER |
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#ifdef ALLOW_WHIO_3D |
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IF ( iAmDoingIO.AND.locBufferIO.AND.(fid.NE.0) ) THEN |
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c reset counter if needed |
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IF (jWh.EQ.nWh) jWh=0 |
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c increment counter |
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jWh=jWh+1 |
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c determine current file record |
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irec2d=i2d+n2d*(irec-1) |
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iWh=(irec2d-1)/nWh+1 |
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c read new chunk if needed |
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IF (jWh.EQ.1) THEN |
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IF ( .NOT.locSingleCpuIO ) then |
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IF (filePrec .EQ. precFloat32) THEN |
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READ(dUnit,rec=iWh) fld3d_procbuff_r4 |
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ELSE |
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READ(dUnit,rec=iWh) fld3d_procbuff_r8 |
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ENDIF |
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ELSE |
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# ifdef INCLUDE_WHIO_GLOBUFF_3D |
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IF (filePrec .EQ. precFloat32) THEN |
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READ(dUnit,rec=iWh) fld3d_globuff_r4 |
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ELSE |
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READ(dUnit,rec=iWh) fld3d_globuff_r8 |
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ENDIF |
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# endif |
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ENDIF |
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ENDIF |
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c copy |
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DO i=1,lengthBuff |
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j=(jWh-1)*lengthBuff+i |
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IF ( .NOT.locSingleCpuIO ) then |
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IF (filePrec .EQ. precFloat32) THEN |
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fld2d_procbuff_r4(i)=fld3d_procbuff_r4(j) |
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ELSE |
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fld2d_procbuff_r8(i)=fld3d_procbuff_r8(j) |
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ENDIF |
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ELSE |
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# ifdef INCLUDE_WHIO_GLOBUFF_3D |
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IF (filePrec .EQ. precFloat32) THEN |
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fld2d_globuff_r4(i)=fld3d_globuff_r4(j) |
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ELSE |
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fld2d_globuff_r8(i)=fld3d_globuff_r8(j) |
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ENDIF |
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# endif |
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ENDIF |
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ENDDO |
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|
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ELSEIF ( iAmDoingIO ) THEN |
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#else |
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IF ( iAmDoingIO ) THEN |
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#endif |
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irec2d=i2d+n2d*(irec-1) |
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IF ( .NOT.locSingleCpuIO ) then |
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IF (filePrec .EQ. precFloat32) THEN |
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READ(dUnit,rec=irec2d) fld2d_procbuff_r4 |
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ELSE |
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READ(dUnit,rec=irec2d) fld2d_procbuff_r8 |
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ENDIF |
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ELSE |
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# ifndef EXCLUDE_WHIO_GLOBUFF_2D |
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IF (filePrec .EQ. precFloat32) THEN |
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READ(dUnit,rec=irec2d) fld2d_globuff_r4 |
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ELSE |
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READ(dUnit,rec=irec2d) fld2d_globuff_r8 |
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ENDIF |
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# endif |
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ENDIF |
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ENDIF |
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_BARRIER |
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|
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IF (filePrec .EQ. precFloat32) THEN |
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IF ( locSingleCpuIO ) then |
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# ifndef EXCLUDE_WHIO_GLOBUFF_2D |
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CALL SCATTER_2D_WH_R4 ( fld2d_globuff_r4, |
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& fld2d_procbuff_r4,myThid) |
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# endif |
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CALL BAR2( myThid ) |
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ENDIF |
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CALL MDS_PASS_R4toRL( fld2d_procbuff_r4, fldRL, |
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& OLx, OLy, 1, i2d, n2d, 0, 0, .TRUE., myThid ) |
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ELSE |
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IF ( locSingleCpuIO ) then |
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# ifndef EXCLUDE_WHIO_GLOBUFF_2D |
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CALL SCATTER_2D_WH_R8 ( fld2d_globuff_r8, |
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& fld2d_procbuff_r8,myThid) |
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# endif |
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CALL BAR2( myThid ) |
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ENDIF |
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CALL MDS_PASS_R8toRL( fld2d_procbuff_r8, fldRL, |
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& OLx, OLy, 1, i2d, n2d, 0, 0, .TRUE., myThid ) |
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ENDIF |
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|
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enddo |
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|
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IF ( iAmDoingIO.AND.(fid.EQ.0) ) THEN |
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CLOSE( dUnit ) |
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ENDIF |
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|
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#endif |
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|
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return |
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end |
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