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C $Header: /u/gcmpack/MITgcm/pkg/mdsio/mdsio_readfield.F,v 1.10 2004/03/08 21:20:02 adcroft Exp $ |
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C $Name: $ |
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|
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#include "PACKAGES_CONFIG.h" |
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#include "MDSIO_OPTIONS.h" |
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|
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SUBROUTINE MDSREADFIELD( |
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I fName, |
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I filePrec, |
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I arrType, |
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I nNz, |
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O arr, |
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I irecord, |
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I myThid ) |
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C |
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C Arguments: |
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C |
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C fName string base name for file to read |
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C filePrec integer number of bits per word in file (32 or 64) |
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C arrType char(2) declaration of "arr": either "RS" or "RL" |
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C nNz integer size of third dimension: normally either 1 or Nr |
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C arr RS/RL array to read into, arr(:,:,nNz,:,:) |
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C irecord integer record number to read |
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C myThid integer thread identifier |
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C |
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C MDSREADFIELD first checks to see if the file "fName" exists, then |
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C if the file "fName.data" exists and finally the tiled files of the |
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C form "fName.xxx.yyy.data" exist. Currently, the meta-files are not |
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C read because it is difficult to parse files in fortran. |
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C The precision of the file is decsribed by filePrec, set either |
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C to floatPrec32 or floatPrec64. The precision or declaration of |
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C the array argument must be consistently described by the char*(2) |
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C string arrType, either "RS" or "RL". nNz allows for both 2-D and |
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C 3-D arrays to be handled. nNz=1 implies a 2-D model field and |
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C nNz=Nr implies a 3-D model field. irecord is the record number |
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C to be read and must be >= 1. The file data is stored in |
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C arr *but* the overlaps are *not* updated. ie. An exchange must |
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C be called. This is because the routine is sometimes called from |
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C within a MASTER_THID region. |
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C |
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C Created: 03/16/99 adcroft@mit.edu |
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|
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implicit none |
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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 "PARAMS.h" |
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#include "EESUPPORT.h" |
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#ifdef ALLOW_EXCH2 |
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#include "W2_EXCH2_TOPOLOGY.h" |
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#include "W2_EXCH2_PARAMS.h" |
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#endif /* ALLOW_EXCH2 */ |
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|
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C Routine arguments |
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character*(*) fName |
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integer filePrec |
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character*(2) arrType |
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integer nNz |
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Real arr(*) |
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integer irecord |
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integer myThid |
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C Functions |
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integer ILNBLNK |
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integer MDS_RECLEN |
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C Local variables |
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character*(80) dataFName,pfName |
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integer iG,jG,irec,bi,bj,j,k,dUnit,IL,pIL |
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logical exst |
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Real*4 r4seg(sNx) |
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Real*8 r8seg(sNx) |
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logical globalFile,fileIsOpen |
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integer length_of_rec |
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character*(max_len_mbuf) msgbuf |
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integer i |
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Real*4 global_r4(Nx,Ny) |
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Real*8 global (Nx,Ny) |
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_RL local(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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#ifdef ALLOW_EXCH2 |
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integer domainHeight,domainLength,tby,tgx,tny,tnx,tn |
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#endif /* ALLOW_EXCH2 */ |
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C ------------------------------------------------------------------ |
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|
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C Only do I/O if I am the master thread |
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_BEGIN_MASTER( myThid ) |
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|
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C Record number must be >= 1 |
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if (irecord .LT. 1) then |
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write(msgbuf,'(a,i9.8)') |
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& ' MDSREADFIELD: argument irecord = ',irecord |
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call print_message( msgbuf, standardmessageunit, |
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& SQUEEZE_RIGHT , mythid) |
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write(msgbuf,'(a)') |
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& ' MDSREADFIELD: Invalid value for irecord' |
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call print_error( msgbuf, mythid ) |
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stop 'ABNORMAL END: S/R MDSREADFIELD' |
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endif |
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|
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C Assume nothing |
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globalFile = .FALSE. |
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fileIsOpen = .FALSE. |
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IL = ILNBLNK( fName ) |
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pIL = ILNBLNK( mdsioLocalDir ) |
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|
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C Assign special directory |
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if ( mdsioLocalDir .NE. ' ' ) then |
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write(pFname(1:80),'(2a)') mdsioLocalDir(1:pIL), fName(1:IL) |
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else |
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pFname= fName |
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endif |
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pIL=ILNBLNK( pfName ) |
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|
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C Assign a free unit number as the I/O channel for this routine |
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call MDSFINDUNIT( dUnit, mythid ) |
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|
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C Check first for global file with simple name (ie. fName) |
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dataFName = fName |
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inquire( file=dataFname, exist=exst ) |
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if (exst) then |
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if ( debugLevel .GE. debLevA ) then |
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write(msgbuf,'(a,a)') |
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& ' MDSREADFIELD: opening global file: ',dataFName |
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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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globalFile = .TRUE. |
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endif |
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|
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C If negative check for global file with MDS name (ie. fName.data) |
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if (.NOT. globalFile) then |
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write(dataFname(1:80),'(2a)') fName(1:IL),'.data' |
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inquire( file=dataFname, exist=exst ) |
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if (exst) then |
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if ( debugLevel .GE. debLevA ) then |
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write(msgbuf,'(a,a)') |
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& ' MDSREADFIELD: opening global file: ',dataFName |
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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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globalFile = .TRUE. |
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endif |
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endif |
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|
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if ( .not. ( globalFile .and. useSingleCPUIO ) ) then |
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|
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C If we are reading from a global file then we open it here |
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if (globalFile) then |
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length_of_rec=MDS_RECLEN( filePrec, sNx, mythid ) |
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open( dUnit, file=dataFName, status='old', |
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& access='direct', recl=length_of_rec ) |
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fileIsOpen=.TRUE. |
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endif |
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|
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#ifdef ALLOW_EXCH2 |
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|
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if (globalFile) then |
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domainLength = exch2_domain_nxt |
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domainHeight = exch2_domain_nyt |
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|
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cafe write(*,fmt='(1X,A,I3,A,I3)') 'L=', domainlength, |
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cafe & 'H=', domainheight |
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C Loop over all tiles |
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do bj=1,nSy |
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do bi=1,nSx |
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C If we are reading from a tiled MDS file then we open each one here |
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cafe if (.NOT. globalFile) then |
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cafe write(msgbuf,'(a)') |
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cafe & ' MDSREADFIELD: non-global input files not |
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cafe & implemented with exch2' |
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cafe call print_error( msgbuf, mythid ) |
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cafe stop 'ABNORMAL END: S/R MDSREADFIELD' |
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cafe endif |
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tn = W2_myTileList(bi) |
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tby = exch2_tbasey(tn) |
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tgx = exch2_txglobalo(tn) |
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tny = exch2_tny(tn) |
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tnx = exch2_tnx(tn) |
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if (fileIsOpen) then |
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do k=1,nNz |
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do j=1,tNy |
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cafe write(*,fmt='(1X,A,I3,A,I3,A,I3,A,I3,A,I3,A,I3)') 'tby=', tby, |
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cafe & ', tgx=', tgx, |
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cafe & ', tnx=',tnx, ', tny=', tny, ', j=',j,', tn=',tn |
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|
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irec = domainLength*tby + (tgx-1)/tnx + 1 + |
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& domainLength*(j-1) + |
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& domainLength*domainHeight*tny*(k-1) + |
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& domainLength*domainHeight*tny*nNz*(irecord-1) |
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cafe write(*,fmt='(1X,A,I6,A,I3)') 'record = ',irec,',thingy=', |
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cafe & (tgx-1)/tnx |
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cafe write(*,fmt='(1X,A,I6)') 'record = ',irec |
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|
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if (filePrec .eq. precFloat32) then |
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read(dUnit,rec=irec) r4seg |
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#ifdef _BYTESWAPIO |
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call MDS_BYTESWAPR4( sNx, r4seg ) |
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#endif |
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if (arrType .eq. 'RS') then |
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call MDS_SEG4toRS( j,bi,bj,k,nNz, r4seg, .TRUE., arr ) |
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elseif (arrType .eq. 'RL') then |
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call MDS_SEG4toRL( j,bi,bj,k,nNz, r4seg, .TRUE., arr ) |
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else |
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write(msgbuf,'(a)') |
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& ' MDSREADFIELD: illegal value for arrType' |
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call print_error( msgbuf, mythid ) |
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stop 'ABNORMAL END: S/R MDSREADFIELD' |
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endif |
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elseif (filePrec .eq. precFloat64) then |
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read(dUnit,rec=irec) r8seg |
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#ifdef _BYTESWAPIO |
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call MDS_BYTESWAPR8( sNx, r8seg ) |
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#endif |
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if (arrType .eq. 'RS') then |
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call MDS_SEG8toRS( j,bi,bj,k,nNz, r8seg, .TRUE., arr ) |
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elseif (arrType .eq. 'RL') then |
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call MDS_SEG8toRL( j,bi,bj,k,nNz, r8seg, .TRUE., arr ) |
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else |
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write(msgbuf,'(a)') |
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& ' MDSREADFIELD: illegal value for arrType' |
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call print_error( msgbuf, mythid ) |
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stop 'ABNORMAL END: S/R MDSREADFIELD' |
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endif |
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else |
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write(msgbuf,'(a)') |
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& ' MDSREADFIELD: illegal value for filePrec' |
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call print_error( msgbuf, mythid ) |
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stop 'ABNORMAL END: S/R MDSREADFIELD' |
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endif |
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C End of j loop |
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enddo |
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C End of k loop |
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enddo |
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if (.NOT. globalFile) then |
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close( dUnit ) |
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fileIsOpen = .FALSE. |
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endif |
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endif |
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C End of bi,bj loops |
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enddo |
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enddo |
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else ! if globalFile |
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c#else /* .not. ALLOW_EXCH2 */ |
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#endif /* ALLOW_EXCH2 */ |
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|
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|
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C Loop over all tiles |
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do bj=1,nSy |
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do bi=1,nSx |
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C If we are reading from a tiled MDS file then we open each one here |
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if (.NOT. globalFile) then |
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iG=bi+(myXGlobalLo-1)/sNx ! Kludge until unstructered tiles |
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jG=bj+(myYGlobalLo-1)/sNy ! Kludge until unstructered tiles |
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write(dataFname(1:80),'(2a,i3.3,a,i3.3,a)') |
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& pfName(1:pIL),'.',iG,'.',jG,'.data' |
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inquire( file=dataFname, exist=exst ) |
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C Of course, we only open the file if the tile is "active" |
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C (This is a place-holder for the active/passive mechanism |
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if (exst) then |
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if ( debugLevel .GE. debLevA ) then |
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write(msgbuf,'(a,a)') |
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& ' MDSREADFIELD: opening file: ',dataFName |
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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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length_of_rec=MDS_RECLEN( filePrec, sNx, mythid ) |
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open( dUnit, file=dataFName, status='old', |
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& access='direct', recl=length_of_rec ) |
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fileIsOpen=.TRUE. |
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else |
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fileIsOpen=.FALSE. |
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write(msgbuf,'(3a)') |
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& ' MDSREADFIELD: filename: ',dataFName, pfName |
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call print_message( msgbuf, standardmessageunit, |
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& SQUEEZE_RIGHT , mythid) |
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write(msgbuf,'(a)') |
| 275 |
& ' MDSREADFIELD: File does not exist' |
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call print_error( msgbuf, mythid ) |
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stop 'ABNORMAL END: S/R MDSREADFIELD' |
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endif |
| 279 |
endif |
| 280 |
|
| 281 |
if (fileIsOpen) then |
| 282 |
do k=1,nNz |
| 283 |
do j=1,sNy |
| 284 |
if (globalFile) then |
| 285 |
iG = myXGlobalLo-1 + (bi-1)*sNx |
| 286 |
jG = myYGlobalLo-1 + (bj-1)*sNy |
| 287 |
irec=1 + INT(iG/sNx) + nSx*nPx*(jG+j-1) + nSx*nPx*Ny*(k-1) |
| 288 |
& + nSx*nPx*Ny*nNz*(irecord-1) |
| 289 |
else |
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iG = 0 |
| 291 |
jG = 0 |
| 292 |
irec=j + sNy*(k-1) + sNy*nNz*(irecord-1) |
| 293 |
endif |
| 294 |
if (filePrec .eq. precFloat32) then |
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read(dUnit,rec=irec) r4seg |
| 296 |
#ifdef _BYTESWAPIO |
| 297 |
call MDS_BYTESWAPR4( sNx, r4seg ) |
| 298 |
#endif |
| 299 |
if (arrType .eq. 'RS') then |
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call MDS_SEG4toRS( j,bi,bj,k,nNz, r4seg, .TRUE., arr ) |
| 301 |
elseif (arrType .eq. 'RL') then |
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call MDS_SEG4toRL( j,bi,bj,k,nNz, r4seg, .TRUE., arr ) |
| 303 |
else |
| 304 |
write(msgbuf,'(a)') |
| 305 |
& ' MDSREADFIELD: illegal value for arrType' |
| 306 |
call print_error( msgbuf, mythid ) |
| 307 |
stop 'ABNORMAL END: S/R MDSREADFIELD' |
| 308 |
endif |
| 309 |
elseif (filePrec .eq. precFloat64) then |
| 310 |
read(dUnit,rec=irec) r8seg |
| 311 |
#ifdef _BYTESWAPIO |
| 312 |
call MDS_BYTESWAPR8( sNx, r8seg ) |
| 313 |
#endif |
| 314 |
if (arrType .eq. 'RS') then |
| 315 |
call MDS_SEG8toRS( j,bi,bj,k,nNz, r8seg, .TRUE., arr ) |
| 316 |
elseif (arrType .eq. 'RL') then |
| 317 |
call MDS_SEG8toRL( j,bi,bj,k,nNz, r8seg, .TRUE., arr ) |
| 318 |
else |
| 319 |
write(msgbuf,'(a)') |
| 320 |
& ' MDSREADFIELD: illegal value for arrType' |
| 321 |
call print_error( msgbuf, mythid ) |
| 322 |
stop 'ABNORMAL END: S/R MDSREADFIELD' |
| 323 |
endif |
| 324 |
else |
| 325 |
write(msgbuf,'(a)') |
| 326 |
& ' MDSREADFIELD: illegal value for filePrec' |
| 327 |
call print_error( msgbuf, mythid ) |
| 328 |
stop 'ABNORMAL END: S/R MDSREADFIELD' |
| 329 |
endif |
| 330 |
C End of j loop |
| 331 |
enddo |
| 332 |
C End of k loop |
| 333 |
enddo |
| 334 |
if (.NOT. globalFile) then |
| 335 |
close( dUnit ) |
| 336 |
fileIsOpen = .FALSE. |
| 337 |
endif |
| 338 |
endif |
| 339 |
C End of bi,bj loops |
| 340 |
enddo |
| 341 |
enddo |
| 342 |
|
| 343 |
#ifdef ALLOW_EXCH2 |
| 344 |
endif ! globalFile |
| 345 |
|
| 346 |
#endif /* ALLOW_EXCH2 */ |
| 347 |
|
| 348 |
C If global file was opened then close it |
| 349 |
if (fileIsOpen .AND. globalFile) then |
| 350 |
close( dUnit ) |
| 351 |
fileIsOpen = .FALSE. |
| 352 |
endif |
| 353 |
|
| 354 |
endif |
| 355 |
c endif ( .not. ( globalFile .and. useSingleCPUIO ) ) |
| 356 |
|
| 357 |
_END_MASTER( myThid ) |
| 358 |
|
| 359 |
if ( globalFile .and. useSingleCPUIO ) then |
| 360 |
|
| 361 |
#ifdef ALLOW_EXCH2 |
| 362 |
write(msgbuf,'(a)') |
| 363 |
& ' MDSREADFIELD: useSingleCPUIO not |
| 364 |
& implemented with exch2' |
| 365 |
call print_error( msgbuf, mythid ) |
| 366 |
stop 'ABNORMAL END: S/R MDSREADFIELD' |
| 367 |
#endif /* ALLOW_EXCH2 */ |
| 368 |
|
| 369 |
C master thread of process 0, only, opens a global file |
| 370 |
_BEGIN_MASTER( myThid ) |
| 371 |
#ifdef ALLOW_USE_MPI |
| 372 |
IF( mpiMyId .EQ. 0 ) THEN |
| 373 |
#else |
| 374 |
IF ( .TRUE. ) THEN |
| 375 |
#endif /* ALLOW_USE_MPI */ |
| 376 |
length_of_rec=MDS_RECLEN( filePrec, Nx*Ny, mythid ) |
| 377 |
open( dUnit, file=dataFName, status='old', |
| 378 |
& access='direct', recl=length_of_rec ) |
| 379 |
ENDIF |
| 380 |
_END_MASTER( myThid ) |
| 381 |
|
| 382 |
DO k=1,nNz |
| 383 |
|
| 384 |
_BEGIN_MASTER( myThid ) |
| 385 |
#ifdef ALLOW_USE_MPI |
| 386 |
IF( mpiMyId .EQ. 0 ) THEN |
| 387 |
#else |
| 388 |
IF ( .TRUE. ) THEN |
| 389 |
#endif /* ALLOW_USE_MPI */ |
| 390 |
irec = k+nNz*(irecord-1) |
| 391 |
if (filePrec .eq. precFloat32) then |
| 392 |
read(dUnit,rec=irec) global_r4 |
| 393 |
#ifdef _BYTESWAPIO |
| 394 |
call MDS_BYTESWAPR4( Nx*Ny, global_r4 ) |
| 395 |
#endif |
| 396 |
DO J=1,Ny |
| 397 |
DO I=1,Nx |
| 398 |
global(I,J) = global_r4(I,J) |
| 399 |
ENDDO |
| 400 |
ENDDO |
| 401 |
elseif (filePrec .eq. precFloat64) then |
| 402 |
read(dUnit,rec=irec) global |
| 403 |
#ifdef _BYTESWAPIO |
| 404 |
call MDS_BYTESWAPR8( Nx*Ny, global ) |
| 405 |
#endif |
| 406 |
else |
| 407 |
write(msgbuf,'(a)') |
| 408 |
& ' MDSREADFIELD: illegal value for filePrec' |
| 409 |
call print_error( msgbuf, mythid ) |
| 410 |
stop 'ABNORMAL END: S/R MDSREADFIELD' |
| 411 |
endif |
| 412 |
ENDIF |
| 413 |
_END_MASTER( myThid ) |
| 414 |
|
| 415 |
CALL SCATTER_2D(global,local,mythid) |
| 416 |
if (arrType .eq. 'RS') then |
| 417 |
call PASStoRS( local,arr,k,nNz,mythid ) |
| 418 |
elseif (arrType .eq. 'RL') then |
| 419 |
call PASStoRL( local,arr,k,nNz,mythid ) |
| 420 |
else |
| 421 |
write(msgbuf,'(a)') |
| 422 |
& ' MDSREADFIELD: illegal value for arrType' |
| 423 |
call print_error( msgbuf, mythid ) |
| 424 |
stop 'ABNORMAL END: S/R MDSREADFIELD' |
| 425 |
endif |
| 426 |
|
| 427 |
ENDDO |
| 428 |
c ENDDO k=1,nNz |
| 429 |
|
| 430 |
_BEGIN_MASTER( myThid ) |
| 431 |
close( dUnit ) |
| 432 |
_END_MASTER( myThid ) |
| 433 |
|
| 434 |
endif |
| 435 |
c endif ( globalFile .and. useSingleCPUIO ) |
| 436 |
|
| 437 |
return |
| 438 |
end |
| 439 |
|
| 440 |
|
| 441 |
C ================================================================== |
| 442 |
|
| 443 |
subroutine passToRS(local,arr,k,nNz,mythid) |
| 444 |
implicit none |
| 445 |
#include "EEPARAMS.h" |
| 446 |
#include "SIZE.h" |
| 447 |
_RL local(1-oLx:sNx+oLx,1-oLy:sNy+oLy,nSx,nSy) |
| 448 |
integer i,j,k,bi,bj,nNz |
| 449 |
_RS arr(1-oLx:sNx+oLx,1-oLy:sNy+oLy,nNz,nSx,nSy) |
| 450 |
integer mythid |
| 451 |
DO bj = myByLo(myThid), myByHi(myThid) |
| 452 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 453 |
DO J=1-Oly,sNy+Oly |
| 454 |
DO I=1-Olx,sNx+Olx |
| 455 |
arr(I,J,k,bi,bj) = local(I,J,bi,bj) |
| 456 |
ENDDO |
| 457 |
ENDDO |
| 458 |
ENDDO |
| 459 |
ENDDO |
| 460 |
return |
| 461 |
end |
| 462 |
|
| 463 |
subroutine passToRL(local,arr,k,nNz,mythid) |
| 464 |
implicit none |
| 465 |
#include "EEPARAMS.h" |
| 466 |
#include "SIZE.h" |
| 467 |
_RL local(1-oLx:sNx+oLx,1-oLy:sNy+oLy,nSx,nSy) |
| 468 |
integer i,j,k,bi,bj,nNz |
| 469 |
_RL arr(1-oLx:sNx+oLx,1-oLy:sNy+oLy,nNz,nSx,nSy) |
| 470 |
integer mythid |
| 471 |
DO bj = myByLo(myThid), myByHi(myThid) |
| 472 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 473 |
DO J=1-Oly,sNy+Oly |
| 474 |
DO I=1-Olx,sNx+Olx |
| 475 |
arr(I,J,k,bi,bj) = local(I,J,bi,bj) |
| 476 |
ENDDO |
| 477 |
ENDDO |
| 478 |
ENDDO |
| 479 |
ENDDO |
| 480 |
return |
| 481 |
end |
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