1 |
C $Header: /u/gcmpack/MITgcm/pkg/mdsio/mdsio_read_whalos.F,v 1.1 2010/09/24 18:39:35 gforget Exp $ |
2 |
C $fName: $ |
3 |
|
4 |
#include "MDSIO_OPTIONS.h" |
5 |
|
6 |
CBOP |
7 |
C !ROUTINE: mds_read_whalos |
8 |
C !INTERFACE: |
9 |
subroutine mds_read_whalos( |
10 |
I fName, |
11 |
I len, |
12 |
I filePrec, |
13 |
I fid, |
14 |
I n2d, |
15 |
O fldRL, |
16 |
I irec, |
17 |
I mythid |
18 |
& ) |
19 |
|
20 |
C !DESCRIPTION: \bv |
21 |
c ================================================================== |
22 |
c SUBROUTINE mds_read_whalos |
23 |
c ================================================================== |
24 |
c o Read file that includes halos. The main purpose is for |
25 |
c adjoint related "tape I/O". The secondary purpose is debugging. |
26 |
c ================================================================== |
27 |
c SUBROUTINE mds_read_whalos |
28 |
c ================================================================== |
29 |
C \ev |
30 |
|
31 |
C !USES: |
32 |
implicit none |
33 |
|
34 |
c == global variables == |
35 |
#include "EEPARAMS.h" |
36 |
#include "SIZE.h" |
37 |
#include "PARAMS.h" |
38 |
#ifdef ALLOW_WHIO |
39 |
#include "MDSIO_BUFF_WH.h" |
40 |
#endif |
41 |
|
42 |
C !INPUT/OUTPUT PARAMETERS: |
43 |
c == routine arguments == |
44 |
c fName - extended tape fName. |
45 |
c len - number of characters in fName. |
46 |
c filePrec - number of bits per word in file (32 or 64). |
47 |
c fid - file unit (its use is not implemented yet). |
48 |
C n2d - size of the fldRL third dimension. |
49 |
c fldRL - array to read. |
50 |
c irec - record number to be written. |
51 |
c mythid - number of the thread or instance of the program. |
52 |
|
53 |
integer mythid |
54 |
character*(*) fName |
55 |
integer len |
56 |
integer fid |
57 |
integer filePrec |
58 |
integer n2d |
59 |
integer length |
60 |
integer irec |
61 |
_RL fldRL(1-Olx:sNx+Olx,1-Oly:sNy+Oly,n2d,nSx,nSy) |
62 |
CEOP |
63 |
|
64 |
#ifdef ALLOW_WHIO |
65 |
C !LOCAL VARIABLES: |
66 |
c == local variables == |
67 |
|
68 |
C sNxWh :: x tile size with halo included |
69 |
C sNyWh :: y tile size with halo included |
70 |
C pocNyWh :: processor sum of sNyWh |
71 |
C gloNyWh :: global sum of sNyWh |
72 |
INTEGER sNxWh |
73 |
INTEGER sNyWh |
74 |
INTEGER procNyWh |
75 |
INTEGER gloNyWh |
76 |
PARAMETER ( sNxWh = sNx+2*Olx ) |
77 |
PARAMETER ( sNyWh = sNy+2*Oly ) |
78 |
PARAMETER ( procNyWh = sNyWh*nSy*nSx ) |
79 |
PARAMETER ( gloNyWh = procNyWh*nPy*nPx ) |
80 |
|
81 |
character*(MAX_LEN_FNAM) pfName |
82 |
character*(MAX_LEN_MBUF) msgBuf |
83 |
integer IL,pIL |
84 |
integer bx,by |
85 |
|
86 |
integer length2d, length3d, length_of_rec |
87 |
integer i2d, i3d |
88 |
integer i,j,k,bi,bj,ii |
89 |
integer dUnit, irec2d |
90 |
LOGICAL iAmDoingIO |
91 |
|
92 |
_RL fld2d(1:sNxWh,1:sNyWh,nSx,nSy) |
93 |
|
94 |
c == functions == |
95 |
INTEGER ILNBLNK |
96 |
INTEGER MDS_RECLEN |
97 |
LOGICAL MASTER_CPU_IO |
98 |
EXTERNAL ILNBLNK |
99 |
EXTERNAL MDS_RECLEN |
100 |
EXTERNAL MASTER_CPU_IO |
101 |
|
102 |
c == end of interface == |
103 |
|
104 |
length2d=sNxWh*procNyWh |
105 |
length3d=length2d*nr |
106 |
|
107 |
C Only do I/O if I am the master thread (and mpi process 0 IF useSingleCpuIO): |
108 |
iAmDoingIO = MASTER_CPU_IO(myThid) |
109 |
IF ( iAmDoingIO ) THEN |
110 |
c get the unit and open file |
111 |
CALL MDSFINDUNIT( dUnit, myThid ) |
112 |
IL = ILNBLNK( fName ) |
113 |
pIL = ILNBLNK( mdsioLocalDir ) |
114 |
IF ( pIL.EQ.0 ) THEN |
115 |
pfName = fName |
116 |
ELSE |
117 |
WRITE(pfName,'(2A)') mdsioLocalDir(1:pIL), fName(1:IL) |
118 |
ENDIF |
119 |
pIL=ILNBLNK( pfName ) |
120 |
IF ( .NOT.useSingleCpuIO ) THEN |
121 |
WRITE(pfName,'(2A,I3.3,A)') pfName(1:pIL),'.',myProcId,'.data' |
122 |
length_of_rec = MDS_RECLEN( filePrec,sNxWh*procNyWh, myThid ) |
123 |
ELSE |
124 |
WRITE(pfName,'(2A)') pfName(1:pIL),'.data' |
125 |
length_of_rec = MDS_RECLEN( filePrec,sNxWh*gloNyWh,myThid) |
126 |
ENDIF |
127 |
OPEN( dUnit, file=pfName, status='old', |
128 |
& access='direct', recl=length_of_rec ) |
129 |
ENDIF |
130 |
|
131 |
|
132 |
do i2d=1,n2d |
133 |
|
134 |
_BARRIER |
135 |
IF ( iAmDoingIO ) THEN |
136 |
irec2d=i2d+n2d*(irec-1) |
137 |
IF ( .NOT.useSingleCpuIO ) then |
138 |
IF (filePrec .EQ. precFloat32) THEN |
139 |
READ(dUnit,rec=irec2d) fld2d_procbuff_r4 |
140 |
ELSE |
141 |
READ(dUnit,rec=irec2d) fld2d_procbuff_r8 |
142 |
ENDIF |
143 |
ELSE |
144 |
IF (filePrec .EQ. precFloat32) THEN |
145 |
READ(dUnit,rec=irec2d) fld2d_globuff_r4 |
146 |
ELSE |
147 |
READ(dUnit,rec=irec2d) fld2d_globuff_r8 |
148 |
ENDIF |
149 |
ENDIF |
150 |
ENDIF |
151 |
_BARRIER |
152 |
|
153 |
IF (filePrec .EQ. precFloat32) THEN |
154 |
IF ( useSingleCpuIO ) then |
155 |
CALL SCATTER_2D_WH_R4 ( fld2d_globuff_r4, |
156 |
& fld2d_procbuff_r4,myThid) |
157 |
CALL BAR2( myThid ) |
158 |
ENDIF |
159 |
CALL MDS_PASS_WH_R4toRL( fld2d_procbuff_r4, fldRL, |
160 |
& 1, i2d, n2d, 0, 0, .TRUE., myThid ) |
161 |
ELSE |
162 |
IF ( useSingleCpuIO ) then |
163 |
CALL SCATTER_2D_WH_R8 ( fld2d_globuff_r8, |
164 |
& fld2d_procbuff_r8,myThid) |
165 |
CALL BAR2( myThid ) |
166 |
ENDIF |
167 |
CALL MDS_PASS_WH_R8toRL( fld2d_procbuff_r8, fldRL, |
168 |
& 1, i2d, n2d, 0, 0, .TRUE., myThid ) |
169 |
ENDIF |
170 |
|
171 |
enddo |
172 |
|
173 |
IF ( iAmDoingIO ) THEN |
174 |
CLOSE( dUnit ) |
175 |
ENDIF |
176 |
|
177 |
#endif |
178 |
|
179 |
return |
180 |
end |