C $Header: /home/ubuntu/mnt/e9_copy/MITgcm/pkg/mdsio/mdsio_gl.F,v 1.1 2001/03/06 15:28:54 adcroft Exp $ C $Name: $ #include "MDSIO_OPTIONS.h" C======================================================================= SUBROUTINE MDSREADFIELD_GL( I fName, I filePrec, I arrType, I nNz, O arr_gl, I irecord, I myThid ) C C Arguments: C C fName string base name for file to read C filePrec integer number of bits per word in file (32 or 64) C arrType char(2) declaration of "arr": either "RS" or "RL" C nNz integer size of third dimension: normally either 1 or Nr C arr RS/RL array to read into, arr(:,:,nNz,:,:) C irecord integer record number to read C myThid integer thread identifier C C MDSREADFIELD first checks to see if the file "fName" exists, then C if the file "fName.data" exists and finally the tiled files of the C form "fName.xxx.yyy.data" exist. Currently, the meta-files are not C read because it is difficult to parse files in fortran. C The precision of the file is decsribed by filePrec, set either C to floatPrec32 or floatPrec64. The precision or declaration of C the array argument must be consistently described by the char*(2) C string arrType, either "RS" or "RL". nNz allows for both 2-D and C 3-D arrays to be handled. nNz=1 implies a 2-D model field and C nNz=Nr implies a 3-D model field. irecord is the record number C to be read and must be >= 1. The file data is stored in C arr *but* the overlaps are *not* updated. ie. An exchange must C be called. This is because the routine is sometimes called from C within a MASTER_THID region. C C Created: 03/16/99 anonymous@nowhere.com implicit none C Global variables / common blocks #include "SIZE.h" #include "EEPARAMS.h" #include "PARAMS.h" C Routine arguments character*(*) fName integer filePrec character*(2) arrType integer nNz _RL arr_gl(sNx,nSx,nPx,sNy,nSy,nPy,nNz) integer irecord integer myThid #ifdef ALLOW_BROKEN_MDSIO_GL C Functions integer ILNBLNK integer MDS_RECLEN C Local variables character*(80) dataFName integer ip,jp,iG,jG,irec,bi,bj,ii,j,k,dUnit,IL logical exst C The following declaration isn't F77 and breaks under several compilers. C To fix this, copies of the routines MDS_SEG4toRS, etc. need to be C written to act on arrays shaped as "arr_gl" is above. C ...to be done by someone in ECCO... _RL arr(1-oLx:sNx+oLx,1-oLy:sNy+oLy,Nr,nSx,nSy) Real*4 r4seg(sNx) Real*8 r8seg(sNx) logical globalFile,fileIsOpen integer length_of_rec character*(max_len_mbuf) msgbuf C ------------------------------------------------------------------ C Only do I/O if I am the master thread _BEGIN_MASTER( myThid ) C Record number must be >= 1 if (irecord .LT. 1) then write(msgbuf,'(a,i9.8)') & ' MDSREADFIELD_GL: argument irecord = ',irecord call print_message( msgbuf, standardmessageunit, & SQUEEZE_RIGHT , mythid) write(msgbuf,'(a)') & ' MDSREADFIELD_GL: Invalid value for irecord' call print_error( msgbuf, mythid ) stop 'ABNORMAL END: S/R MDSREADFIELD_GL' endif C Assume nothing globalFile = .FALSE. fileIsOpen = .FALSE. IL=ILNBLNK( fName ) C Assign a free unit number as the I/O channel for this routine call MDSFINDUNIT( dUnit, mythid ) C Check first for global file with simple name (ie. fName) dataFName = fName inquire( file=dataFname, exist=exst ) if (exst) then write(msgbuf,'(a,a)') & ' MDSREADFIELD: opening global file: ',dataFName call print_message( msgbuf, standardmessageunit, & SQUEEZE_RIGHT , mythid) stop " xx, adxx, weights and masks are not supposed to be global" endif C If negative check for global file with MDS name (ie. fName.data) if (.NOT. globalFile) then write(dataFname(1:80),'(2a)') fName(1:IL),'.data' inquire( file=dataFname, exist=exst ) if (exst) then write(msgbuf,'(a,a)') & ' MDSREADFIELD_GL: opening global file: ',dataFName call print_message( msgbuf, standardmessageunit, & SQUEEZE_RIGHT , mythid) globalFile = .TRUE. stop " xx, adxx, weights and masks are not supposed to be global" endif endif C Loop over all processors do jp=1,nPy do ip=1,nPx C Loop over all tiles do bj=1,nSy do bi=1,nSx C If we are reading from a tiled MDS file then we open each one here if (.NOT. globalFile) then iG=bi+(ip-1)*nsx ! Kludge until unstructered tiles jG=bj+(jp-1)*nsy ! Kludge until unstructered tiles write(dataFname(1:80),'(2a,i3.3,a,i3.3,a)') & fName(1:IL),'.',iG,'.',jG,'.data' inquire( file=dataFname, exist=exst ) C Of course, we only open the file if the tile is "active" C (This is a place-holder for the active/passive mechanism if (exst) then write(msgbuf,'(a,a)') & ' MDSREADFIELD_GL: opening file: ',dataFName call print_message( msgbuf, standardmessageunit, & SQUEEZE_RIGHT , mythid) length_of_rec=MDS_RECLEN( filePrec, sNx, mythid ) open( dUnit, file=dataFName, status='old', & access='direct', recl=length_of_rec ) fileIsOpen=.TRUE. else fileIsOpen=.FALSE. write(msgbuf,'(a,a)') & ' MDSREADFIELD_GL: filename: ',dataFName call print_message( msgbuf, standardmessageunit, & SQUEEZE_RIGHT , mythid) write(msgbuf,'(a)') & ' MDSREADFIELD_GL: File does not exist' call print_error( msgbuf, mythid ) stop 'ABNORMAL END: S/R MDSREADFIELD_GL' endif endif if (fileIsOpen) then do k=1,nNz do j=1,sNy iG = 0 jG = 0 irec=j + sNy*(k-1) + sNy*nNz*(irecord-1) if (filePrec .eq. precFloat32) then read(dUnit,rec=irec) r4seg #ifdef _BYTESWAPIO call MDS_BYTESWAPR4( sNx, r4seg ) #endif if (arrType .eq. 'RS') then call MDS_SEG4toRS( j,bi,bj,k,nNz, r4seg, .TRUE., arr ) elseif (arrType .eq. 'RL') then call MDS_SEG4toRL( j,bi,bj,k,nNz, r4seg, .TRUE., arr ) else write(msgbuf,'(a)') & ' MDSREADFIELD_GL: illegal value for arrType' call print_error( msgbuf, mythid ) stop 'ABNORMAL END: S/R MDSREADFIELD_GL' endif elseif (filePrec .eq. precFloat64) then read(dUnit,rec=irec) r8seg #ifdef _BYTESWAPIO call MDS_BYTESWAPR8( sNx, r8seg ) #endif if (arrType .eq. 'RS') then call MDS_SEG8toRS( j,bi,bj,k,nNz, r8seg, .TRUE., arr ) elseif (arrType .eq. 'RL') then call MDS_SEG8toRL( j,bi,bj,k,nNz, r8seg, .TRUE., arr ) else write(msgbuf,'(a)') & ' MDSREADFIELD_GL: illegal value for arrType' call print_error( msgbuf, mythid ) stop 'ABNORMAL END: S/R MDSREADFIELD_GL' endif else write(msgbuf,'(a)') & ' MDSREADFIELD_GL: illegal value for filePrec' call print_error( msgbuf, mythid ) stop 'ABNORMAL END: S/R MDSREADFIELD_GL' endif do ii=1,sNx arr_gl(ii,bi,ip,j,bj,jp,k)=arr(ii,j,k,bi,bj) enddo C End of j loop enddo C End of k loop enddo if (.NOT. globalFile) then close( dUnit ) fileIsOpen = .FALSE. endif endif C End of bi,bj loops enddo enddo C End of ip,jp loops enddo enddo C If global file was opened then close it if (fileIsOpen .AND. globalFile) then close( dUnit ) fileIsOpen = .FALSE. endif _END_MASTER( myThid ) C ------------------------------------------------------------------ return end C======================================================================= C======================================================================= SUBROUTINE MDSWRITEFIELD_GL( I fName, I filePrec, I arrType, I nNz, I arr_gl, I irecord, I myIter, I myThid ) C C Arguments: C C fName string base name for file to written C filePrec integer number of bits per word in file (32 or 64) C arrType char(2) declaration of "arr": either "RS" or "RL" C nNz integer size of third dimension: normally either 1 or Nr C arr RS/RL array to write, arr(:,:,nNz,:,:) C irecord integer record number to read C myIter integer time step number C myThid integer thread identifier C C MDSWRITEFIELD creates either a file of the form "fName.data" and C "fName.meta" if the logical flag "globalFile" is set true. Otherwise C it creates MDS tiled files of the form "fName.xxx.yyy.data" and C "fName.xxx.yyy.meta". A meta-file is always created. C Currently, the meta-files are not read because it is difficult C to parse files in fortran. We should read meta information before C adding records to an existing multi-record file. C The precision of the file is decsribed by filePrec, set either C to floatPrec32 or floatPrec64. The precision or declaration of C the array argument must be consistently described by the char*(2) C string arrType, either "RS" or "RL". nNz allows for both 2-D and C 3-D arrays to be handled. nNz=1 implies a 2-D model field and C nNz=Nr implies a 3-D model field. irecord is the record number C to be read and must be >= 1. NOTE: It is currently assumed that C the highest record number in the file was the last record written. C Nor is there a consistency check between the routine arguments and file. C ie. if your write record 2 after record 4 the meta information C will record the number of records to be 2. This, again, is because C we have read the meta information. To be fixed. C C Created: 03/16/99 adcroft@mit.edu C C Changed: 05/31/00 heimbach@mit.edu C open(dUnit, ..., status='old', ... -> status='unknown' implicit none C Global variables / common blocks #include "SIZE.h" #include "EEPARAMS.h" #include "PARAMS.h" C Routine arguments character*(*) fName integer filePrec character*(2) arrType integer nNz cph( cph Real arr(*) _RL arr_gl(sNx,nSx,nPx,sNy,nSy,nPy,nNz) cph) integer irecord integer myIter integer myThid C Functions integer ILNBLNK integer MDS_RECLEN C Local variables character*(80) dataFName,metaFName integer ip,jp,iG,jG,irec,bi,bj,ii,j,k,dUnit,IL Real*4 r4seg(sNx) Real*8 r8seg(sNx) _RL arr(1-oLx:sNx+oLx,1-oLy:sNy+oLy,Nr,nSx,nSy) integer dimList(3,3),ndims integer length_of_rec logical fileIsOpen character*(max_len_mbuf) msgbuf C ------------------------------------------------------------------ C Only do I/O if I am the master thread _BEGIN_MASTER( myThid ) C Record number must be >= 1 if (irecord .LT. 1) then write(msgbuf,'(a,i9.8)') & ' MDSWRITEFIELD_GL: argument irecord = ',irecord call print_message( msgbuf, standardmessageunit, & SQUEEZE_RIGHT , mythid) write(msgbuf,'(a)') & ' MDSWRITEFIELD_GL: invalid value for irecord' call print_error( msgbuf, mythid ) stop 'ABNORMAL END: S/R MDSWRITEFIELD_GL' endif C Assume nothing fileIsOpen=.FALSE. IL=ILNBLNK( fName ) C Assign a free unit number as the I/O channel for this routine call MDSFINDUNIT( dUnit, mythid ) C Loop over all processors do jp=1,nPy do ip=1,nPx C Loop over all tiles do bj=1,nSy do bi=1,nSx C If we are writing to a tiled MDS file then we open each one here iG=bi+(ip-1)*nsx ! Kludge until unstructered tiles jG=bj+(jp-1)*nsy ! Kludge until unstructered tiles write(dataFname(1:80),'(2a,i3.3,a,i3.3,a)') & fName(1:IL),'.',iG,'.',jG,'.data' if (irecord .EQ. 1) then length_of_rec=MDS_RECLEN( filePrec, sNx, mythid ) open( dUnit, file=dataFName, status=_NEW_STATUS, & access='direct', recl=length_of_rec ) fileIsOpen=.TRUE. else length_of_rec=MDS_RECLEN( filePrec, sNx, mythid ) open( dUnit, file=dataFName, status=_OLD_STATUS, & access='direct', recl=length_of_rec ) fileIsOpen=.TRUE. endif if (fileIsOpen) then do k=1,nNz do j=1,sNy do ii=1,sNx arr(ii,j,k,bi,bj)=arr_gl(ii,bi,ip,j,bj,jp,k) enddo iG = 0 jG = 0 irec=j + sNy*(k-1) + sNy*nNz*(irecord-1) if (filePrec .eq. precFloat32) then if (arrType .eq. 'RS') then call MDS_SEG4toRS( j,bi,bj,k,nNz, r4seg, .FALSE., arr ) elseif (arrType .eq. 'RL') then call MDS_SEG4toRL( j,bi,bj,k,nNz, r4seg, .FALSE., arr ) else write(msgbuf,'(a)') & ' MDSWRITEFIELD_GL: illegal value for arrType' call print_error( msgbuf, mythid ) stop 'ABNORMAL END: S/R MDSWRITEFIELD_GL' endif #ifdef _BYTESWAPIO call MDS_BYTESWAPR4( sNx, r4seg ) #endif write(dUnit,rec=irec) r4seg elseif (filePrec .eq. precFloat64) then if (arrType .eq. 'RS') then call MDS_SEG8toRS( j,bi,bj,k,nNz, r8seg, .FALSE., arr ) elseif (arrType .eq. 'RL') then call MDS_SEG8toRL( j,bi,bj,k,nNz, r8seg, .FALSE., arr ) else write(msgbuf,'(a)') & ' MDSWRITEFIELD_GL: illegal value for arrType' call print_error( msgbuf, mythid ) stop 'ABNORMAL END: S/R MDSWRITEFIELD_GL' endif #ifdef _BYTESWAPIO call MDS_BYTESWAPR8( sNx, r8seg ) #endif write(dUnit,rec=irec) r8seg else write(msgbuf,'(a)') & ' MDSWRITEFIELD_GL: illegal value for filePrec' call print_error( msgbuf, mythid ) stop 'ABNORMAL END: S/R MDSWRITEFIELD_GL' endif C End of j loop enddo C End of k loop enddo else write(msgbuf,'(a)') & ' MDSWRITEFIELD_GL: I should never get to this point' call print_error( msgbuf, mythid ) stop 'ABNORMAL END: S/R MDSWRITEFIELD_GL' endif C If we were writing to a tiled MDS file then we close it here if (fileIsOpen) then close( dUnit ) fileIsOpen = .FALSE. endif C Create meta-file for each tile if we are tiling iG=bi+(ip-1)*nsx ! Kludge until unstructered tiles jG=bj+(jp-1)*nsy ! Kludge until unstructered tiles write(metaFname(1:80),'(2a,i3.3,a,i3.3,a)') & fName(1:IL),'.',iG,'.',jG,'.meta' dimList(1,1)=Nx dimList(2,1)=((ip-1)*nSx+(bi-1))*sNx+1 dimList(3,1)=((ip-1)*nSx+bi)*sNx dimList(1,2)=Ny dimList(2,2)=((jp-1)*nSy+(bj-1))*sNy+1 dimList(3,2)=((jp-1)*nSy+bj)*sNy dimList(1,3)=Nr dimList(2,3)=1 dimList(3,3)=Nr ndims=3 if (nNz .EQ. 1) ndims=2 call MDSWRITEMETA( metaFName, dataFName, & filePrec, ndims, dimList, irecord, myIter, mythid ) C End of bi,bj loops enddo enddo C End of ip,jp loops enddo enddo _END_MASTER( myThid ) #endif C ------------------------------------------------------------------ return end C=======================================================================