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dimitri |
1.2 |
C $Header: /usr/local/gcmpack/MITgcm/pkg/mdsio/mdsio_readfield.F,v 1.6 2003/12/10 00:41:01 dimitri Exp $ |
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C $Name: hrcube_1 $ |
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cnh |
1.1 |
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#include "MDSIO_OPTIONS.h" |
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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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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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dimitri |
1.2 |
#include "EESUPPORT.h" |
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cnh |
1.1 |
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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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dimitri |
1.2 |
character*(80) dataFName,pfName |
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integer iG,jG,irec,bi,bj,j,k,dUnit,IL,pIL |
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cnh |
1.1 |
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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dimitri |
1.2 |
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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cnh |
1.1 |
C ------------------------------------------------------------------ |
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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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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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C Assume nothing |
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globalFile = .FALSE. |
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fileIsOpen = .FALSE. |
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dimitri |
1.2 |
IL = ILNBLNK( fName ) |
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pIL = ILNBLNK( mdsioLocalDir ) |
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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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cnh |
1.1 |
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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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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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dimitri |
1.2 |
if ( debugLevel .GE. debLevA ) then |
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write(msgbuf,'(a,a)') |
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cnh |
1.1 |
& ' MDSREADFIELD: opening global file: ',dataFName |
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dimitri |
1.2 |
call print_message( msgbuf, standardmessageunit, |
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cnh |
1.1 |
& SQUEEZE_RIGHT , mythid) |
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dimitri |
1.2 |
endif |
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cnh |
1.1 |
globalFile = .TRUE. |
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endif |
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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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dimitri |
1.2 |
if ( debugLevel .GE. debLevA ) then |
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write(msgbuf,'(a,a)') |
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cnh |
1.1 |
& ' MDSREADFIELD: opening global file: ',dataFName |
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dimitri |
1.2 |
call print_message( msgbuf, standardmessageunit, |
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cnh |
1.1 |
& SQUEEZE_RIGHT , mythid) |
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dimitri |
1.2 |
endif |
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cnh |
1.1 |
globalFile = .TRUE. |
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endif |
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endif |
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dimitri |
1.2 |
if ( .not. ( globalFile .and. useSingleCPUIO ) ) then |
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cnh |
1.1 |
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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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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dimitri |
1.2 |
& pfName(1:pIL),'.',iG,'.',jG,'.data' |
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cnh |
1.1 |
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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dimitri |
1.2 |
if ( debugLevel .GE. debLevA ) then |
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write(msgbuf,'(a,a)') |
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cnh |
1.1 |
& ' MDSREADFIELD: opening file: ',dataFName |
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dimitri |
1.2 |
call print_message( msgbuf, standardmessageunit, |
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cnh |
1.1 |
& SQUEEZE_RIGHT , mythid) |
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dimitri |
1.2 |
endif |
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cnh |
1.1 |
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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dimitri |
1.2 |
write(msgbuf,'(3a)') |
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& ' MDSREADFIELD: filename: ',dataFName, pfName |
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cnh |
1.1 |
call print_message( msgbuf, standardmessageunit, |
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& SQUEEZE_RIGHT , mythid) |
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write(msgbuf,'(a)') |
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& ' 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 |
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endif |
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if (fileIsOpen) then |
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do k=1,nNz |
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do j=1,sNy |
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if (globalFile) then |
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iG = myXGlobalLo-1 + (bi-1)*sNx |
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jG = myYGlobalLo-1 + (bj-1)*sNy |
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irec=1 + INT(iG/sNx) + nSx*nPx*(jG+j-1) + nSx*nPx*Ny*(k-1) |
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& + nSx*nPx*Ny*nNz*(irecord-1) |
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else |
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iG = 0 |
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jG = 0 |
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irec=j + sNy*(k-1) + sNy*nNz*(irecord-1) |
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endif |
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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 |
| 200 |
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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 ) |
| 216 |
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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 ) |
| 222 |
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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 ) |
| 228 |
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stop 'ABNORMAL END: S/R MDSREADFIELD' |
| 229 |
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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 |
| 235 |
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close( dUnit ) |
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fileIsOpen = .FALSE. |
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endif |
| 238 |
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endif |
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C End of bi,bj loops |
| 240 |
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enddo |
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enddo |
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C If global file was opened then close it |
| 244 |
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if (fileIsOpen .AND. globalFile) then |
| 245 |
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close( dUnit ) |
| 246 |
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fileIsOpen = .FALSE. |
| 247 |
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endif |
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dimitri |
1.2 |
endif |
| 250 |
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c endif ( .not. ( globalFile .and. useSingleCPUIO ) ) |
| 251 |
cnh |
1.1 |
|
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dimitri |
1.2 |
_END_MASTER( myThid ) |
| 253 |
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| 254 |
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if ( globalFile .and. useSingleCPUIO ) then |
| 255 |
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| 256 |
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C master thread of process 0, only, opens a global file |
| 257 |
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_BEGIN_MASTER( myThid ) |
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#ifdef ALLOW_USE_MPI |
| 259 |
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IF( mpiMyId .EQ. 0 ) THEN |
| 260 |
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#else |
| 261 |
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IF ( .TRUE. ) THEN |
| 262 |
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#endif /* ALLOW_USE_MPI */ |
| 263 |
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length_of_rec=MDS_RECLEN( filePrec, Nx*Ny, mythid ) |
| 264 |
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open( dUnit, file=dataFName, status='old', |
| 265 |
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& access='direct', recl=length_of_rec ) |
| 266 |
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ENDIF |
| 267 |
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_END_MASTER( myThid ) |
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DO k=1,nNz |
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| 271 |
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_BEGIN_MASTER( myThid ) |
| 272 |
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#ifdef ALLOW_USE_MPI |
| 273 |
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IF( mpiMyId .EQ. 0 ) THEN |
| 274 |
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#else |
| 275 |
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IF ( .TRUE. ) THEN |
| 276 |
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#endif /* ALLOW_USE_MPI */ |
| 277 |
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irec = k+nNz*(irecord-1) |
| 278 |
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if (filePrec .eq. precFloat32) then |
| 279 |
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read(dUnit,rec=irec) global_r4 |
| 280 |
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#ifdef _BYTESWAPIO |
| 281 |
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call MDS_BYTESWAPR4( Nx*Ny, global_r4 ) |
| 282 |
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#endif |
| 283 |
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DO J=1,Ny |
| 284 |
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DO I=1,Nx |
| 285 |
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global(I,J) = global_r4(I,J) |
| 286 |
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ENDDO |
| 287 |
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ENDDO |
| 288 |
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elseif (filePrec .eq. precFloat64) then |
| 289 |
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read(dUnit,rec=irec) global |
| 290 |
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#ifdef _BYTESWAPIO |
| 291 |
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call MDS_BYTESWAPR8( Nx*Ny, global ) |
| 292 |
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#endif |
| 293 |
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else |
| 294 |
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write(msgbuf,'(a)') |
| 295 |
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& ' MDSREADFIELD: illegal value for filePrec' |
| 296 |
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call print_error( msgbuf, mythid ) |
| 297 |
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stop 'ABNORMAL END: S/R MDSREADFIELD' |
| 298 |
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endif |
| 299 |
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ENDIF |
| 300 |
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_END_MASTER( myThid ) |
| 301 |
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| 302 |
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CALL SCATTER_2D(global,local,mythid) |
| 303 |
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if (arrType .eq. 'RS') then |
| 304 |
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call PASStoRS( local,arr,k,nNz,mythid ) |
| 305 |
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elseif (arrType .eq. 'RL') then |
| 306 |
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call PASStoRL( local,arr,k,nNz,mythid ) |
| 307 |
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else |
| 308 |
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write(msgbuf,'(a)') |
| 309 |
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& ' MDSREADFIELD: illegal value for arrType' |
| 310 |
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call print_error( msgbuf, mythid ) |
| 311 |
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stop 'ABNORMAL END: S/R MDSREADFIELD' |
| 312 |
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endif |
| 313 |
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| 314 |
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ENDDO |
| 315 |
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c ENDDO k=1,nNz |
| 316 |
cnh |
1.1 |
|
| 317 |
dimitri |
1.2 |
_BEGIN_MASTER( myThid ) |
| 318 |
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close( dUnit ) |
| 319 |
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_END_MASTER( myThid ) |
| 320 |
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| 321 |
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endif |
| 322 |
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c endif ( globalFile .and. useSingleCPUIO ) |
| 323 |
cnh |
1.1 |
|
| 324 |
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C ------------------------------------------------------------------ |
| 325 |
dimitri |
1.2 |
return |
| 326 |
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end |
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| 329 |
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C ================================================================== |
| 330 |
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| 331 |
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subroutine passToRS(local,arr,k,nNz,mythid) |
| 332 |
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implicit none |
| 333 |
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#include "EEPARAMS.h" |
| 334 |
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#include "SIZE.h" |
| 335 |
|
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_RL local(1-oLx:sNx+oLx,1-oLy:sNy+oLy,nSx,nSy) |
| 336 |
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integer i,j,k,bi,bj,nNz |
| 337 |
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_RS arr(1-oLx:sNx+oLx,1-oLy:sNy+oLy,nNz,nSx,nSy) |
| 338 |
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integer mythid |
| 339 |
|
|
DO bj = myByLo(myThid), myByHi(myThid) |
| 340 |
|
|
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 341 |
|
|
DO J=1-Oly,sNy+Oly |
| 342 |
|
|
DO I=1-Olx,sNx+Olx |
| 343 |
|
|
arr(I,J,k,bi,bj) = local(I,J,bi,bj) |
| 344 |
|
|
ENDDO |
| 345 |
|
|
ENDDO |
| 346 |
|
|
ENDDO |
| 347 |
|
|
ENDDO |
| 348 |
|
|
return |
| 349 |
|
|
end |
| 350 |
|
|
|
| 351 |
|
|
subroutine passToRL(local,arr,k,nNz,mythid) |
| 352 |
|
|
implicit none |
| 353 |
|
|
#include "EEPARAMS.h" |
| 354 |
|
|
#include "SIZE.h" |
| 355 |
|
|
_RL local(1-oLx:sNx+oLx,1-oLy:sNy+oLy,nSx,nSy) |
| 356 |
|
|
integer i,j,k,bi,bj,nNz |
| 357 |
|
|
_RL arr(1-oLx:sNx+oLx,1-oLy:sNy+oLy,nNz,nSx,nSy) |
| 358 |
|
|
integer mythid |
| 359 |
|
|
DO bj = myByLo(myThid), myByHi(myThid) |
| 360 |
|
|
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 361 |
|
|
DO J=1-Oly,sNy+Oly |
| 362 |
|
|
DO I=1-Olx,sNx+Olx |
| 363 |
|
|
arr(I,J,k,bi,bj) = local(I,J,bi,bj) |
| 364 |
|
|
ENDDO |
| 365 |
|
|
ENDDO |
| 366 |
|
|
ENDDO |
| 367 |
|
|
ENDDO |
| 368 |
cnh |
1.1 |
return |
| 369 |
|
|
end |
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