| 1 |
C $Header: $ |
| 2 |
C $Name: $ |
| 3 |
|
| 4 |
#include "MDSIO_OPTIONS.h" |
| 5 |
|
| 6 |
SUBROUTINE MDSREADFIELD( |
| 7 |
I fName, |
| 8 |
I filePrec, |
| 9 |
I arrType, |
| 10 |
I nNz, |
| 11 |
O arr, |
| 12 |
I irecord, |
| 13 |
I myThid ) |
| 14 |
C |
| 15 |
C Arguments: |
| 16 |
C |
| 17 |
C fName string base name for file to read |
| 18 |
C filePrec integer number of bits per word in file (32 or 64) |
| 19 |
C arrType char(2) declaration of "arr": either "RS" or "RL" |
| 20 |
C nNz integer size of third dimension: normally either 1 or Nr |
| 21 |
C arr RS/RL array to read into, arr(:,:,nNz,:,:) |
| 22 |
C irecord integer record number to read |
| 23 |
C myThid integer thread identifier |
| 24 |
C |
| 25 |
C MDSREADFIELD first checks to see if the file "fName" exists, then |
| 26 |
C if the file "fName.data" exists and finally the tiled files of the |
| 27 |
C form "fName.xxx.yyy.data" exist. Currently, the meta-files are not |
| 28 |
C read because it is difficult to parse files in fortran. |
| 29 |
C The precision of the file is decsribed by filePrec, set either |
| 30 |
C to floatPrec32 or floatPrec64. The precision or declaration of |
| 31 |
C the array argument must be consistently described by the char*(2) |
| 32 |
C string arrType, either "RS" or "RL". nNz allows for both 2-D and |
| 33 |
C 3-D arrays to be handled. nNz=1 implies a 2-D model field and |
| 34 |
C nNz=Nr implies a 3-D model field. irecord is the record number |
| 35 |
C to be read and must be >= 1. The file data is stored in |
| 36 |
C arr *but* the overlaps are *not* updated. ie. An exchange must |
| 37 |
C be called. This is because the routine is sometimes called from |
| 38 |
C within a MASTER_THID region. |
| 39 |
C |
| 40 |
C Created: 03/16/99 adcroft@mit.edu |
| 41 |
|
| 42 |
implicit none |
| 43 |
C Global variables / common blocks |
| 44 |
#include "SIZE.h" |
| 45 |
#include "EEPARAMS.h" |
| 46 |
#include "PARAMS.h" |
| 47 |
|
| 48 |
C Routine arguments |
| 49 |
character*(*) fName |
| 50 |
integer filePrec |
| 51 |
character*(2) arrType |
| 52 |
integer nNz |
| 53 |
Real arr(*) |
| 54 |
integer irecord |
| 55 |
integer myThid |
| 56 |
C Functions |
| 57 |
integer ILNBLNK |
| 58 |
integer MDS_RECLEN |
| 59 |
C Local variables |
| 60 |
character*(80) dataFName |
| 61 |
integer iG,jG,irec,bi,bj,j,k,dUnit,IL |
| 62 |
logical exst |
| 63 |
Real*4 r4seg(sNx) |
| 64 |
Real*8 r8seg(sNx) |
| 65 |
logical globalFile,fileIsOpen |
| 66 |
integer length_of_rec |
| 67 |
character*(max_len_mbuf) msgbuf |
| 68 |
C ------------------------------------------------------------------ |
| 69 |
|
| 70 |
C Only do I/O if I am the master thread |
| 71 |
_BEGIN_MASTER( myThid ) |
| 72 |
|
| 73 |
C Record number must be >= 1 |
| 74 |
if (irecord .LT. 1) then |
| 75 |
write(msgbuf,'(a,i9.8)') |
| 76 |
& ' MDSREADFIELD: argument irecord = ',irecord |
| 77 |
call print_message( msgbuf, standardmessageunit, |
| 78 |
& SQUEEZE_RIGHT , mythid) |
| 79 |
write(msgbuf,'(a)') |
| 80 |
& ' MDSREADFIELD: Invalid value for irecord' |
| 81 |
call print_error( msgbuf, mythid ) |
| 82 |
stop 'ABNORMAL END: S/R MDSREADFIELD' |
| 83 |
endif |
| 84 |
|
| 85 |
C Assume nothing |
| 86 |
globalFile = .FALSE. |
| 87 |
fileIsOpen = .FALSE. |
| 88 |
IL=ILNBLNK( fName ) |
| 89 |
|
| 90 |
C Assign a free unit number as the I/O channel for this routine |
| 91 |
call MDSFINDUNIT( dUnit, mythid ) |
| 92 |
|
| 93 |
C Check first for global file with simple name (ie. fName) |
| 94 |
dataFName = fName |
| 95 |
inquire( file=dataFname, exist=exst ) |
| 96 |
if (exst) then |
| 97 |
write(msgbuf,'(a,a)') |
| 98 |
& ' MDSREADFIELD: opening global file: ',dataFName |
| 99 |
call print_message( msgbuf, standardmessageunit, |
| 100 |
& SQUEEZE_RIGHT , mythid) |
| 101 |
globalFile = .TRUE. |
| 102 |
endif |
| 103 |
|
| 104 |
C If negative check for global file with MDS name (ie. fName.data) |
| 105 |
if (.NOT. globalFile) then |
| 106 |
write(dataFname(1:80),'(2a)') fName(1:IL),'.data' |
| 107 |
inquire( file=dataFname, exist=exst ) |
| 108 |
if (exst) then |
| 109 |
write(msgbuf,'(a,a)') |
| 110 |
& ' MDSREADFIELD: opening global file: ',dataFName |
| 111 |
call print_message( msgbuf, standardmessageunit, |
| 112 |
& SQUEEZE_RIGHT , mythid) |
| 113 |
globalFile = .TRUE. |
| 114 |
endif |
| 115 |
endif |
| 116 |
|
| 117 |
C If we are reading from a global file then we open it here |
| 118 |
if (globalFile) then |
| 119 |
length_of_rec=MDS_RECLEN( filePrec, sNx, mythid ) |
| 120 |
open( dUnit, file=dataFName, status='old', |
| 121 |
& access='direct', recl=length_of_rec ) |
| 122 |
fileIsOpen=.TRUE. |
| 123 |
endif |
| 124 |
|
| 125 |
C Loop over all tiles |
| 126 |
do bj=1,nSy |
| 127 |
do bi=1,nSx |
| 128 |
C If we are reading from a tiled MDS file then we open each one here |
| 129 |
if (.NOT. globalFile) then |
| 130 |
iG=bi+(myXGlobalLo-1)/sNx ! Kludge until unstructered tiles |
| 131 |
jG=bj+(myYGlobalLo-1)/sNy ! Kludge until unstructered tiles |
| 132 |
write(dataFname(1:80),'(2a,i3.3,a,i3.3,a)') |
| 133 |
& fName(1:IL),'.',iG,'.',jG,'.data' |
| 134 |
inquire( file=dataFname, exist=exst ) |
| 135 |
C Of course, we only open the file if the tile is "active" |
| 136 |
C (This is a place-holder for the active/passive mechanism |
| 137 |
if (exst) then |
| 138 |
write(msgbuf,'(a,a)') |
| 139 |
& ' MDSREADFIELD: opening file: ',dataFName |
| 140 |
call print_message( msgbuf, standardmessageunit, |
| 141 |
& SQUEEZE_RIGHT , mythid) |
| 142 |
length_of_rec=MDS_RECLEN( filePrec, sNx, mythid ) |
| 143 |
open( dUnit, file=dataFName, status='old', |
| 144 |
& access='direct', recl=length_of_rec ) |
| 145 |
fileIsOpen=.TRUE. |
| 146 |
else |
| 147 |
fileIsOpen=.FALSE. |
| 148 |
write(msgbuf,'(a,a)') |
| 149 |
& ' MDSREADFIELD: filename: ',dataFName |
| 150 |
call print_message( msgbuf, standardmessageunit, |
| 151 |
& SQUEEZE_RIGHT , mythid) |
| 152 |
write(msgbuf,'(a)') |
| 153 |
& ' MDSREADFIELD: File does not exist' |
| 154 |
call print_error( msgbuf, mythid ) |
| 155 |
stop 'ABNORMAL END: S/R MDSREADFIELD' |
| 156 |
endif |
| 157 |
endif |
| 158 |
|
| 159 |
if (fileIsOpen) then |
| 160 |
do k=1,nNz |
| 161 |
do j=1,sNy |
| 162 |
if (globalFile) then |
| 163 |
iG = myXGlobalLo-1 + (bi-1)*sNx |
| 164 |
jG = myYGlobalLo-1 + (bj-1)*sNy |
| 165 |
irec=1 + INT(iG/sNx) + nSx*nPx*(jG+j-1) + nSx*nPx*Ny*(k-1) |
| 166 |
& + nSx*nPx*Ny*nNz*(irecord-1) |
| 167 |
else |
| 168 |
iG = 0 |
| 169 |
jG = 0 |
| 170 |
irec=j + sNy*(k-1) + sNy*nNz*(irecord-1) |
| 171 |
endif |
| 172 |
if (filePrec .eq. precFloat32) then |
| 173 |
read(dUnit,rec=irec) r4seg |
| 174 |
#ifdef _BYTESWAPIO |
| 175 |
call MDS_BYTESWAPR4( sNx, r4seg ) |
| 176 |
#endif |
| 177 |
if (arrType .eq. 'RS') then |
| 178 |
call MDS_SEG4toRS( j,bi,bj,k,nNz, r4seg, .TRUE., arr ) |
| 179 |
elseif (arrType .eq. 'RL') then |
| 180 |
call MDS_SEG4toRL( j,bi,bj,k,nNz, r4seg, .TRUE., arr ) |
| 181 |
else |
| 182 |
write(msgbuf,'(a)') |
| 183 |
& ' MDSREADFIELD: illegal value for arrType' |
| 184 |
call print_error( msgbuf, mythid ) |
| 185 |
stop 'ABNORMAL END: S/R MDSREADFIELD' |
| 186 |
endif |
| 187 |
elseif (filePrec .eq. precFloat64) then |
| 188 |
read(dUnit,rec=irec) r8seg |
| 189 |
#ifdef _BYTESWAPIO |
| 190 |
call MDS_BYTESWAPR8( sNx, r8seg ) |
| 191 |
#endif |
| 192 |
if (arrType .eq. 'RS') then |
| 193 |
call MDS_SEG8toRS( j,bi,bj,k,nNz, r8seg, .TRUE., arr ) |
| 194 |
elseif (arrType .eq. 'RL') then |
| 195 |
call MDS_SEG8toRL( j,bi,bj,k,nNz, r8seg, .TRUE., arr ) |
| 196 |
else |
| 197 |
write(msgbuf,'(a)') |
| 198 |
& ' MDSREADFIELD: illegal value for arrType' |
| 199 |
call print_error( msgbuf, mythid ) |
| 200 |
stop 'ABNORMAL END: S/R MDSREADFIELD' |
| 201 |
endif |
| 202 |
else |
| 203 |
write(msgbuf,'(a)') |
| 204 |
& ' MDSREADFIELD: illegal value for filePrec' |
| 205 |
call print_error( msgbuf, mythid ) |
| 206 |
stop 'ABNORMAL END: S/R MDSREADFIELD' |
| 207 |
endif |
| 208 |
C End of j loop |
| 209 |
enddo |
| 210 |
C End of k loop |
| 211 |
enddo |
| 212 |
if (.NOT. globalFile) then |
| 213 |
close( dUnit ) |
| 214 |
fileIsOpen = .FALSE. |
| 215 |
endif |
| 216 |
endif |
| 217 |
C End of bi,bj loops |
| 218 |
enddo |
| 219 |
enddo |
| 220 |
|
| 221 |
C If global file was opened then close it |
| 222 |
if (fileIsOpen .AND. globalFile) then |
| 223 |
close( dUnit ) |
| 224 |
fileIsOpen = .FALSE. |
| 225 |
endif |
| 226 |
|
| 227 |
_END_MASTER( myThid ) |
| 228 |
|
| 229 |
C ------------------------------------------------------------------ |
| 230 |
return |
| 231 |
end |
Parent Directory
| 
Revision Log
| 
Revision Graph