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C $Header: /usr/local/gcmpack/MITgcm/pkg/mdsio/mdsio_writefield.F,v 1.4 2003/07/08 15:00:27 heimbach Exp $ |
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C $Name: $ |
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|
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#include "MDSIO_OPTIONS.h" |
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|
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SUBROUTINE MDSWRITEFIELD( |
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I fName, |
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I filePrec, |
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I globalFile, |
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I arrType, |
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I nNz, |
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I arr, |
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I irecord, |
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I myIter, |
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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 written |
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C filePrec integer number of bits per word in file (32 or 64) |
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C globalFile logical selects between writing a global or tiled file |
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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 write, arr(:,:,nNz,:,:) |
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C irecord integer record number to read |
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C myIter integer time step number |
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C myThid integer thread identifier |
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C |
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C MDSWRITEFIELD creates either a file of the form "fName.data" and |
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C "fName.meta" if the logical flag "globalFile" is set true. Otherwise |
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C it creates MDS tiled files of the form "fName.xxx.yyy.data" and |
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C "fName.xxx.yyy.meta". A meta-file is always created. |
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C Currently, the meta-files are not read because it is difficult |
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C to parse files in fortran. We should read meta information before |
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C adding records to an existing multi-record file. |
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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. NOTE: It is currently assumed that |
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C the highest record number in the file was the last record written. |
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C Nor is there a consistency check between the routine arguments and file. |
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C ie. if your write record 2 after record 4 the meta information |
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C will record the number of records to be 2. This, again, is because |
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C we have read the meta information. To be fixed. |
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C |
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C Created: 03/16/99 adcroft@mit.edu |
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C |
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C Changed: 05/31/00 heimbach@mit.edu |
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C open(dUnit, ..., status='old', ... -> status='unknown' |
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C |
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C Changed: 01/06/02 menemenlis@jpl.nasa.gov |
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C added useSingleCpuIO hack |
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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 "EESUPPORT.h" |
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#include "PARAMS.h" |
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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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logical globalFile |
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character*(2) arrType |
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integer nNz |
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cph( |
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cph Real arr(*) |
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_RL arr(1-oLx:sNx+oLx,1-oLy:sNy+oLy,nNz,nSx,nSy) |
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cph) |
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integer irecord |
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integer myIter |
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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,metaFName,pfName |
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integer iG,jG,irec,bi,bj,j,k,dUnit,IL,pIL |
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Real*4 r4seg(sNx) |
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Real*8 r8seg(sNx) |
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integer dimList(3,3),ndims |
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integer length_of_rec |
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logical fileIsOpen |
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character*(max_len_mbuf) msgbuf |
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#ifdef ALLOW_USE_MPI |
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integer i |
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Real*8 global(Nx,Ny) |
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Real*4 global_r4(Nx,Ny) |
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_RL local(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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#endif /* ALLOW_USE_MPI */ |
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|
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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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& ' MDSWRITEFIELD: 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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& ' MDSWRITEFIELD: invalid value for irecord' |
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call print_error( msgbuf, mythid ) |
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stop 'ABNORMAL END: S/R MDSWRITEFIELD' |
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endif |
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|
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C Assume nothing |
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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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#ifdef ALLOW_USE_MPI |
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_END_MASTER( myThid ) |
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C If option globalFile is desired but does not work or if |
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C globalFile is too slow, then try using single-CPU I/O. |
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if (useSingleCpuIO) then |
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|
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C Master thread of process 0, only, opens a global file |
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_BEGIN_MASTER( myThid ) |
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IF( mpiMyId .EQ. 0 ) THEN |
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write(dataFname(1:80),'(2a)') fName(1:IL),'.data' |
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length_of_rec=MDS_RECLEN( filePrec, Nx*Ny, mythid ) |
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if (irecord .EQ. 1) then |
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open( dUnit, file=dataFName, status=_NEW_STATUS, |
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& access='direct', recl=length_of_rec ) |
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else |
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open( dUnit, file=dataFName, status=_OLD_STATUS, |
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& access='direct', recl=length_of_rec ) |
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endif |
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ENDIF |
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_END_MASTER( myThid ) |
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|
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C Gather array and write it to file, one vertical level at a time |
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DO k=1,nNz |
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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DO J=1-Oly,sNy+Oly |
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DO I=1-Olx,sNx+Olx |
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local(I,J,bi,bj) = arr(I,J,k,bi,bj) |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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CALL GATHER_2D( global, local, myThid ) |
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_BEGIN_MASTER( myThid ) |
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IF( mpiMyId .EQ. 0 ) THEN |
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irec=k+nNz*(irecord-1) |
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if (filePrec .eq. precFloat32) then |
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DO J=1,Ny |
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DO I=1,Nx |
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global_r4(I,J) = global(I,J) |
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ENDDO |
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ENDDO |
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#ifdef _BYTESWAPIO |
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call MDS_BYTESWAPR4( Nx*Ny, global_r4 ) |
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#endif |
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write(dUnit,rec=irec) global_r4 |
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elseif (filePrec .eq. precFloat64) then |
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#ifdef _BYTESWAPIO |
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call MDS_BYTESWAPR8( Nx*Ny, global ) |
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#endif |
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write(dUnit,rec=irec) global |
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else |
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write(msgbuf,'(a)') |
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& ' MDSWRITEFIELD: illegal value for filePrec' |
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call print_error( msgbuf, mythid ) |
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stop 'ABNORMAL END: S/R MDSWRITEFIELD' |
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endif |
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ENDIF |
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_END_MASTER( myThid ) |
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ENDDO |
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|
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C Close data-file and create meta-file |
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_BEGIN_MASTER( myThid ) |
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IF( mpiMyId .EQ. 0 ) THEN |
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close( dUnit ) |
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write(metaFName(1:80),'(2a)') fName(1:IL),'.meta' |
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dimList(1,1)=Nx |
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dimList(2,1)=1 |
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dimList(3,1)=Nx |
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dimList(1,2)=Ny |
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dimList(2,2)=1 |
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dimList(3,2)=Ny |
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dimList(1,3)=nNz |
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dimList(2,3)=1 |
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dimList(3,3)=nNz |
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ndims=3 |
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if (nNz .EQ. 1) ndims=2 |
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call MDSWRITEMETA( metaFName, dataFName, |
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& filePrec, ndims, dimList, irecord, myIter, mythid ) |
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ENDIF |
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_END_MASTER( myThid ) |
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C To be safe, make other processes wait for I/O completion |
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_BARRIER |
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|
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elseif ( .NOT. useSingleCpuIO ) then |
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_BEGIN_MASTER( myThid ) |
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#endif /* ALLOW_USE_MPI */ |
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|
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C If we are writing to a global file then we open it here |
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if (globalFile) then |
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write(dataFname(1:80),'(2a)') fName(1:IL),'.data' |
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if (irecord .EQ. 1) then |
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length_of_rec=MDS_RECLEN( filePrec, sNx, mythid ) |
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open( dUnit, file=dataFName, status=_NEW_STATUS, |
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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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length_of_rec=MDS_RECLEN( filePrec, sNx, mythid ) |
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open( dUnit, file=dataFName, status=_OLD_STATUS, |
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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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endif |
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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 writing to 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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if (irecord .EQ. 1) then |
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length_of_rec=MDS_RECLEN( filePrec, sNx, mythid ) |
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open( dUnit, file=dataFName, status=_NEW_STATUS, |
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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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length_of_rec=MDS_RECLEN( filePrec, sNx, mythid ) |
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open( dUnit, file=dataFName, status=_OLD_STATUS, |
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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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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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if (arrType .eq. 'RS') then |
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call MDS_SEG4toRS( j,bi,bj,k,nNz, r4seg, .FALSE., arr ) |
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elseif (arrType .eq. 'RL') then |
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call MDS_SEG4toRL( j,bi,bj,k,nNz, r4seg, .FALSE., arr ) |
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else |
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write(msgbuf,'(a)') |
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& ' MDSWRITEFIELD: illegal value for arrType' |
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call print_error( msgbuf, mythid ) |
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stop 'ABNORMAL END: S/R MDSWRITEFIELD' |
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endif |
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#ifdef _BYTESWAPIO |
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call MDS_BYTESWAPR4( sNx, r4seg ) |
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#endif |
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write(dUnit,rec=irec) r4seg |
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elseif (filePrec .eq. precFloat64) then |
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if (arrType .eq. 'RS') then |
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call MDS_SEG8toRS( j,bi,bj,k,nNz, r8seg, .FALSE., arr ) |
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elseif (arrType .eq. 'RL') then |
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call MDS_SEG8toRL( j,bi,bj,k,nNz, r8seg, .FALSE., arr ) |
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else |
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write(msgbuf,'(a)') |
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& ' MDSWRITEFIELD: illegal value for arrType' |
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call print_error( msgbuf, mythid ) |
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stop 'ABNORMAL END: S/R MDSWRITEFIELD' |
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endif |
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#ifdef _BYTESWAPIO |
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call MDS_BYTESWAPR8( sNx, r8seg ) |
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#endif |
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write(dUnit,rec=irec) r8seg |
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else |
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write(msgbuf,'(a)') |
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& ' MDSWRITEFIELD: illegal value for filePrec' |
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call print_error( msgbuf, mythid ) |
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stop 'ABNORMAL END: S/R MDSWRITEFIELD' |
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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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else |
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write(msgbuf,'(a)') |
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& ' MDSWRITEFIELD: I should never get to this point' |
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call print_error( msgbuf, mythid ) |
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stop 'ABNORMAL END: S/R MDSWRITEFIELD' |
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endif |
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C If we were writing to a tiled MDS file then we close it here |
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if (fileIsOpen .AND. (.NOT. globalFile)) then |
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close( dUnit ) |
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fileIsOpen = .FALSE. |
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endif |
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C Create meta-file for each tile if we are tiling |
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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(metaFname(1:80),'(2a,i3.3,a,i3.3,a)') |
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& pfName(1:pIL),'.',iG,'.',jG,'.meta' |
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dimList(1,1)=Nx |
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dimList(2,1)=myXGlobalLo+(bi-1)*sNx |
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dimList(3,1)=myXGlobalLo+bi*sNx-1 |
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dimList(1,2)=Ny |
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dimList(2,2)=myYGlobalLo+(bj-1)*sNy |
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dimList(3,2)=myYGlobalLo+bj*sNy-1 |
| 330 |
dimList(1,3)=nNz |
| 331 |
dimList(2,3)=1 |
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dimList(3,3)=nNz |
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ndims=3 |
| 334 |
if (nNz .EQ. 1) ndims=2 |
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call MDSWRITEMETA( metaFName, dataFName, |
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& filePrec, ndims, dimList, irecord, myIter, mythid ) |
| 337 |
endif |
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C End of bi,bj loops |
| 339 |
enddo |
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enddo |
| 341 |
|
| 342 |
C If global file was opened then close it |
| 343 |
if (fileIsOpen .AND. globalFile) then |
| 344 |
close( dUnit ) |
| 345 |
fileIsOpen = .FALSE. |
| 346 |
endif |
| 347 |
|
| 348 |
C Create meta-file for the global-file |
| 349 |
if (globalFile) then |
| 350 |
C We can not do this operation using threads (yet) because of the |
| 351 |
C "barrier" at the next step. The barrier could be removed but |
| 352 |
C at the cost of "safe" distributed I/O. |
| 353 |
if (nThreads.NE.1) then |
| 354 |
write(msgbuf,'(a,a)') |
| 355 |
& ' MDSWRITEFIELD: A threads version of this routine', |
| 356 |
& ' does not exist.' |
| 357 |
call print_message( msgbuf, standardmessageunit, |
| 358 |
& SQUEEZE_RIGHT , mythid) |
| 359 |
write(msgbuf,'(a)') |
| 360 |
& ' MDSWRITEFIELD: This needs to be fixed...' |
| 361 |
call print_message( msgbuf, standardmessageunit, |
| 362 |
& SQUEEZE_RIGHT , mythid) |
| 363 |
write(msgbuf,'(a,i3.2)') |
| 364 |
& ' MDSWRITEFIELD: nThreads = ',nThreads |
| 365 |
call print_message( msgbuf, standardmessageunit, |
| 366 |
& SQUEEZE_RIGHT , mythid) |
| 367 |
write(msgbuf,'(a)') |
| 368 |
& ' MDSWRITEFIELD: Stopping because you are using threads' |
| 369 |
call print_error( msgbuf, mythid ) |
| 370 |
stop 'ABNORMAL END: S/R MDSWRITEFIELD' |
| 371 |
endif |
| 372 |
C We put a barrier here to ensure that all processes have finished |
| 373 |
C writing their data before we update the meta-file |
| 374 |
_BARRIER |
| 375 |
write(metaFName(1:80),'(2a)') fName(1:IL),'.meta' |
| 376 |
dimList(1,1)=Nx |
| 377 |
dimList(2,1)=1 |
| 378 |
dimList(3,1)=Nx |
| 379 |
dimList(1,2)=Ny |
| 380 |
dimList(2,2)=1 |
| 381 |
dimList(3,2)=Ny |
| 382 |
dimList(1,3)=nNz |
| 383 |
dimList(2,3)=1 |
| 384 |
dimList(3,3)=nNz |
| 385 |
ndims=3 |
| 386 |
if (nNz .EQ. 1) ndims=2 |
| 387 |
call MDSWRITEMETA( metaFName, dataFName, |
| 388 |
& filePrec, ndims, dimList, irecord, myIter, mythid ) |
| 389 |
fileIsOpen=.TRUE. |
| 390 |
endif |
| 391 |
|
| 392 |
_END_MASTER( myThid ) |
| 393 |
|
| 394 |
#ifdef ALLOW_USE_MPI |
| 395 |
C endif useSingleCpuIO |
| 396 |
endif |
| 397 |
#endif /* ALLOW_USE_MPI */ |
| 398 |
|
| 399 |
C ------------------------------------------------------------------ |
| 400 |
return |
| 401 |
end |
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