| 1 |
C $Header: /u/gcmpack/MITgcm/pkg/exch2/exch2_rx2_cube_ad.template,v 1.11 2010/05/19 01:25:17 jmc Exp $ |
| 2 |
C $Name: $ |
| 3 |
|
| 4 |
#include "CPP_EEOPTIONS.h" |
| 5 |
#undef LOCAL_DBUG |
| 6 |
|
| 7 |
CBOP |
| 8 |
C !ROUTINE: EXCH_RX2_CUBE_AD |
| 9 |
|
| 10 |
C !INTERFACE: |
| 11 |
SUBROUTINE EXCH2_RX2_CUBE_AD( |
| 12 |
U array1, array2, |
| 13 |
I signOption, fieldCode, |
| 14 |
I myOLw, myOLe, myOLs, myOLn, myNz, |
| 15 |
I exchWidthX, exchWidthY, |
| 16 |
I cornerMode, myThid ) |
| 17 |
|
| 18 |
C !DESCRIPTION: |
| 19 |
C Two components vector field AD-Exchange: |
| 20 |
C Tile-edge overlap-region of a 2 component vector field is added to |
| 21 |
C corresponding near-edge interior data point and then zero out. |
| 22 |
|
| 23 |
C !USES: |
| 24 |
IMPLICIT NONE |
| 25 |
|
| 26 |
C == Global data == |
| 27 |
#include "SIZE.h" |
| 28 |
#include "EEPARAMS.h" |
| 29 |
#include "EESUPPORT.h" |
| 30 |
#include "W2_EXCH2_SIZE.h" |
| 31 |
#include "W2_EXCH2_TOPOLOGY.h" |
| 32 |
#include "W2_EXCH2_BUFFER.h" |
| 33 |
|
| 34 |
C !INPUT/OUTPUT PARAMETERS: |
| 35 |
C array1 :: 1rst component array with edges to exchange. |
| 36 |
C array2 :: 2nd component array with edges to exchange. |
| 37 |
C signOption :: Flag controlling whether vector is signed. |
| 38 |
C fieldCode :: field code (position on staggered grid) |
| 39 |
C myOLw,myOLe :: West and East overlap region sizes. |
| 40 |
C myOLs,myOLn :: South and North overlap region sizes. |
| 41 |
C exchWidthX :: Width of data region exchanged in X. |
| 42 |
C exchWidthY :: Width of data region exchanged in Y. |
| 43 |
C cornerMode :: halo-corner-region treatment: update/ignore corner region |
| 44 |
C myThid :: Thread number of this instance of S/R EXCH... |
| 45 |
|
| 46 |
INTEGER myOLw, myOLe, myOLs, myOLn, myNz |
| 47 |
_RX array1(1-myOLw:sNx+myOLe, |
| 48 |
& 1-myOLs:sNy+myOLn, |
| 49 |
& myNz, nSx, nSy) |
| 50 |
_RX array2(1-myOLw:sNx+myOLe, |
| 51 |
& 1-myOLs:sNy+myOLn, |
| 52 |
& myNz, nSx, nSy) |
| 53 |
LOGICAL signOption |
| 54 |
CHARACTER*2 fieldCode |
| 55 |
INTEGER exchWidthX |
| 56 |
INTEGER exchWidthY |
| 57 |
INTEGER cornerMode |
| 58 |
INTEGER myThid |
| 59 |
|
| 60 |
C !LOCAL VARIABLES: |
| 61 |
C e2_msgHandles :: Synchronization and coordination data structure used to |
| 62 |
C :: coordinate access to e2Bufr1_RX or to regulate message |
| 63 |
C :: buffering. In PUT communication sender will increment |
| 64 |
C :: handle entry once data is ready in buffer. Receiver will |
| 65 |
C :: decrement handle once data is consumed from buffer. |
| 66 |
C :: For MPI MSG communication MPI_Wait uses handle to check |
| 67 |
C :: Isend has cleared. This is done in routine after receives. |
| 68 |
C note: a) current implementation does not use e2_msgHandles for communication |
| 69 |
C between threads: all-threads barriers are used (see CNH note below). |
| 70 |
C For a 2-threads synchro communication (future version), |
| 71 |
C e2_msgHandles should be shared (in common block, moved to BUFFER.h) |
| 72 |
INTEGER bi, bj |
| 73 |
C Variables for working through W2 topology |
| 74 |
INTEGER e2_msgHandles( 2, W2_maxNeighbours, nSx, nSy ) |
| 75 |
INTEGER thisTile, farTile, N, nN, oN |
| 76 |
INTEGER tIlo1, tIhi1, tJlo1, tJhi1, oIs1, oJs1 |
| 77 |
INTEGER tIlo2, tIhi2, tJlo2, tJhi2, oIs2, oJs2 |
| 78 |
INTEGER tIStride, tJStride |
| 79 |
INTEGER tKlo, tKhi, tKStride |
| 80 |
INTEGER i1Lo, i1Hi, j1Lo, j1Hi, k1Lo, k1Hi |
| 81 |
INTEGER i2Lo, i2Hi, j2Lo, j2Hi, k2Lo, k2Hi |
| 82 |
LOGICAL updateCorners |
| 83 |
|
| 84 |
#ifdef ALLOW_USE_MPI |
| 85 |
INTEGER iBufr1, iBufr2, nri, nrj |
| 86 |
C MPI stuff (should be in a routine call) |
| 87 |
INTEGER mpiStatus(MPI_STATUS_SIZE) |
| 88 |
INTEGER mpiRc |
| 89 |
INTEGER wHandle |
| 90 |
#endif |
| 91 |
CEOP |
| 92 |
|
| 93 |
updateCorners = cornerMode .EQ. EXCH_UPDATE_CORNERS |
| 94 |
C- Tile size of arrays to exchange: |
| 95 |
i1Lo = 1-myOLw |
| 96 |
i1Hi = sNx+myOLe |
| 97 |
j1Lo = 1-myOLs |
| 98 |
j1Hi = sNy+myOLn |
| 99 |
k1Lo = 1 |
| 100 |
k1Hi = myNz |
| 101 |
i2Lo = 1-myOLw |
| 102 |
i2Hi = sNx+myOLe |
| 103 |
j2Lo = 1-myOLs |
| 104 |
j2Hi = sNy+myOLn |
| 105 |
k2Lo = 1 |
| 106 |
k2Hi = myNz |
| 107 |
|
| 108 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 109 |
|
| 110 |
C Prevent anyone to access shared buffer while an other thread modifies it |
| 111 |
CALL BAR2( myThid ) |
| 112 |
|
| 113 |
C-- Extract from buffer (either from level 1 if local exch, |
| 114 |
C or level 2 if coming from an other Proc) |
| 115 |
C AD: = fill buffer from my-tile-edge overlap-region, level 1 or 2 depending |
| 116 |
C AD: on local (to this Proc) or remote Proc tile destination |
| 117 |
DO bj=myByLo(myThid), myByHi(myThid) |
| 118 |
DO bi=myBxLo(myThid), myBxHi(myThid) |
| 119 |
thisTile=W2_myTileList(bi,bj) |
| 120 |
nN=exch2_nNeighbours(thisTile) |
| 121 |
DO N=1,nN |
| 122 |
CALL EXCH2_GET_UV_BOUNDS( |
| 123 |
I fieldCode, exchWidthX, updateCorners, |
| 124 |
I thisTile, N, |
| 125 |
O tIlo1, tIhi1, tJlo1, tJhi1, |
| 126 |
O tIlo2, tIhi2, tJlo2, tJhi2, |
| 127 |
O tiStride, tjStride, |
| 128 |
O oIs1, oJs1, oIs2, oJs2, |
| 129 |
I myThid ) |
| 130 |
tKLo=1 |
| 131 |
tKHi=myNz |
| 132 |
tKStride=1 |
| 133 |
|
| 134 |
C From buffer, get my points |
| 135 |
C (tIlo:tIhi:tiStride,tJlo:tJhi,tJStride,tKlo:tKhi,tKStride) in "array1,2": |
| 136 |
C Note: when transferring data within a process: |
| 137 |
C o e2Bufr entry to read is entry associated with opposing send record |
| 138 |
C o e2_msgHandle entry to read is entry associated with opposing send record. |
| 139 |
CALL EXCH2_AD_GET_RX2( |
| 140 |
I tIlo1, tIhi1, tIlo2, tIhi2, tiStride, |
| 141 |
I tJlo1, tJhi1, tJlo2, tJhi2, tjStride, |
| 142 |
I tKlo, tKhi, tkStride, |
| 143 |
I thisTile, N, bi, bj, |
| 144 |
I e2BufrRecSize, W2_maxNeighbours, nSx, nSy, |
| 145 |
O iBuf1Filled(N,bi,bj), iBuf2Filled(N,bi,bj), |
| 146 |
O e2Bufr1_RX, e2Bufr2_RX, |
| 147 |
U array1(1-myOLw,1-myOLs,1,bi,bj), |
| 148 |
U array2(1-myOLw,1-myOLs,1,bi,bj), |
| 149 |
I i1Lo, i1Hi, j1Lo, j1Hi, k1Lo, k1Hi, |
| 150 |
I i2Lo, i2Hi, j2Lo, j2Hi, k2Lo, k2Hi, |
| 151 |
U e2_msgHandles, |
| 152 |
I W2_myCommFlag(N,bi,bj), myThid ) |
| 153 |
ENDDO |
| 154 |
ENDDO |
| 155 |
ENDDO |
| 156 |
|
| 157 |
C Wait until all threads finish filling buffer |
| 158 |
CALL BAR2( myThid ) |
| 159 |
|
| 160 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 161 |
|
| 162 |
#ifdef ALLOW_USE_MPI |
| 163 |
C AD: all MPI part is acting on buffer and is identical to forward code, |
| 164 |
C AD: except a) the buffer level: send from lev.2, receive into lev.1 |
| 165 |
C AD: b) the length of transferred buffer (<- match the ad_put/ad_get) |
| 166 |
|
| 167 |
_BEGIN_MASTER( myThid ) |
| 168 |
|
| 169 |
C-- Send my data (in buffer, level 1) to target Process |
| 170 |
DO bj=1,nSy |
| 171 |
DO bi=1,nSx |
| 172 |
thisTile=W2_myTileList(bi,bj) |
| 173 |
nN=exch2_nNeighbours(thisTile) |
| 174 |
DO N=1,nN |
| 175 |
C- Skip the call if this is an internal exchange |
| 176 |
IF ( W2_myCommFlag(N,bi,bj) .EQ. 'M' ) THEN |
| 177 |
CALL EXCH2_SEND_RX2( |
| 178 |
I thisTile, N, |
| 179 |
I e2BufrRecSize, |
| 180 |
I iBuf1Filled(N,bi,bj), iBuf2Filled(N,bi,bj), |
| 181 |
I e2Bufr1_RX(1,N,bi,bj,2), e2Bufr2_RX(1,N,bi,bj,2), |
| 182 |
O e2_msgHandles(1,N,bi,bj), |
| 183 |
I W2_myCommFlag(N,bi,bj), myThid ) |
| 184 |
ENDIF |
| 185 |
ENDDO |
| 186 |
ENDDO |
| 187 |
ENDDO |
| 188 |
|
| 189 |
C-- Receive data (in buffer, level 1) from source Process |
| 190 |
DO bj=1,nSy |
| 191 |
DO bi=1,nSx |
| 192 |
thisTile=W2_myTileList(bi,bj) |
| 193 |
nN=exch2_nNeighbours(thisTile) |
| 194 |
DO N=1,nN |
| 195 |
C- Skip the call if this is an internal exchange |
| 196 |
IF ( W2_myCommFlag(N,bi,bj) .EQ. 'M' ) THEN |
| 197 |
farTile=exch2_neighbourId(N,thisTile) |
| 198 |
oN = exch2_opposingSend(N,thisTile) |
| 199 |
CALL EXCH2_GET_UV_BOUNDS( |
| 200 |
I fieldCode, exchWidthX, updateCorners, |
| 201 |
I farTile, oN, |
| 202 |
O tIlo1, tIhi1, tJlo1, tJhi1, |
| 203 |
O tIlo2, tIhi2, tJlo2, tJhi2, |
| 204 |
O tiStride, tjStride, |
| 205 |
O oIs1, oJs1, oIs2, oJs2, |
| 206 |
I myThid ) |
| 207 |
nri = 1 + (tIhi1-tIlo1)/tiStride |
| 208 |
nrj = 1 + (tJhi1-tJlo1)/tjStride |
| 209 |
iBufr1 = nri*nrj*myNz |
| 210 |
nri = 1 + (tIhi2-tIlo2)/tiStride |
| 211 |
nrj = 1 + (tJhi2-tJlo2)/tjStride |
| 212 |
iBufr2 = nri*nrj*myNz |
| 213 |
C Receive from neighbour N to fill buffer and later on the array |
| 214 |
CALL EXCH2_RECV_RX2( |
| 215 |
I thisTile, N, |
| 216 |
I e2BufrRecSize, |
| 217 |
I iBufr1, iBufr2, |
| 218 |
I e2Bufr1_RX(1,N,bi,bj,1), e2Bufr2_RX(1,N,bi,bj,1), |
| 219 |
I W2_myCommFlag(N,bi,bj), myThid ) |
| 220 |
ENDIF |
| 221 |
ENDDO |
| 222 |
ENDDO |
| 223 |
ENDDO |
| 224 |
|
| 225 |
C-- Clear message handles/locks |
| 226 |
DO bj=1,nSy |
| 227 |
DO bi=1,nSx |
| 228 |
thisTile=W2_myTileList(bi,bj) |
| 229 |
nN=exch2_nNeighbours(thisTile) |
| 230 |
DO N=1,nN |
| 231 |
C Note: In a between process tile-tile data transport using |
| 232 |
C MPI the sender needs to clear an Isend wait handle here. |
| 233 |
C In a within process tile-tile data transport using true |
| 234 |
C shared address space/or direct transfer through commonly |
| 235 |
C addressable memory blocks the receiver needs to assert |
| 236 |
C that he has consumed the buffer the sender filled here. |
| 237 |
farTile=exch2_neighbourId(N,thisTile) |
| 238 |
IF ( W2_myCommFlag(N,bi,bj) .EQ. 'M' ) THEN |
| 239 |
wHandle = e2_msgHandles(1,N,bi,bj) |
| 240 |
CALL MPI_Wait( wHandle, mpiStatus, mpiRc ) |
| 241 |
wHandle = e2_msgHandles(2,N,bi,bj) |
| 242 |
CALL MPI_Wait( wHandle, mpiStatus, mpiRc ) |
| 243 |
ELSEIF ( W2_myCommFlag(N,bi,bj) .EQ. 'P' ) THEN |
| 244 |
ELSE |
| 245 |
ENDIF |
| 246 |
ENDDO |
| 247 |
ENDDO |
| 248 |
ENDDO |
| 249 |
|
| 250 |
_END_MASTER( myThid ) |
| 251 |
C Everyone waits until master-thread finishes receiving |
| 252 |
CALL BAR2( myThid ) |
| 253 |
|
| 254 |
#endif /* ALLOW_USE_MPI */ |
| 255 |
|
| 256 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 257 |
|
| 258 |
C-- Post sends into buffer (buffer level 1): |
| 259 |
DO bj=myByLo(myThid), myByHi(myThid) |
| 260 |
DO bi=myBxLo(myThid), myBxHi(myThid) |
| 261 |
thisTile=W2_myTileList(bi,bj) |
| 262 |
nN=exch2_nNeighbours(thisTile) |
| 263 |
DO N=1,nN |
| 264 |
farTile=exch2_neighbourId(N,thisTile) |
| 265 |
oN = exch2_opposingSend(N,thisTile) |
| 266 |
CALL EXCH2_GET_UV_BOUNDS( |
| 267 |
I fieldCode, exchWidthX, updateCorners, |
| 268 |
I farTile, oN, |
| 269 |
O tIlo1, tIhi1, tJlo1, tJhi1, |
| 270 |
O tIlo2, tIhi2, tJlo2, tJhi2, |
| 271 |
O tiStride, tjStride, |
| 272 |
O oIs1, oJs1, oIs2, oJs2, |
| 273 |
I myThid ) |
| 274 |
tKLo=1 |
| 275 |
tKHi=myNz |
| 276 |
tKStride=1 |
| 277 |
C- Put my points in buffer for neighbour N to fill points |
| 278 |
C (tIlo:tIhi:tiStride,tJlo:tJhi,tJStride,tKlo:tKhi,tKStride) |
| 279 |
C in its copy of "array1" & "array2". |
| 280 |
CALL EXCH2_AD_PUT_RX2( |
| 281 |
I tIlo1, tIhi1, tIlo2, tIhi2, tiStride, |
| 282 |
I tJlo1, tJhi1, tJlo2, tJhi2, tjStride, |
| 283 |
I tKlo, tKhi, tkStride, |
| 284 |
I oIs1, oJs1, oIs2, oJs2, |
| 285 |
I thisTile, N, |
| 286 |
I e2BufrRecSize, |
| 287 |
O e2Bufr1_RX(1,N,bi,bj,1), e2Bufr2_RX(1,N,bi,bj,1), |
| 288 |
I array1(1-myOLw,1-myOLs,1,bi,bj), |
| 289 |
I array2(1-myOLw,1-myOLs,1,bi,bj), |
| 290 |
I i1Lo, i1Hi, j1Lo, j1Hi, k1Lo, k1Hi, |
| 291 |
I i2Lo, i2Hi, j2Lo, j2Hi, k2Lo, k2Hi, |
| 292 |
O e2_msgHandles(1,N,bi,bj), |
| 293 |
I W2_myCommFlag(N,bi,bj), signOption, myThid ) |
| 294 |
ENDDO |
| 295 |
ENDDO |
| 296 |
ENDDO |
| 297 |
|
| 298 |
RETURN |
| 299 |
END |
| 300 |
|
| 301 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 302 |
|
| 303 |
CEH3 ;;; Local Variables: *** |
| 304 |
CEH3 ;;; mode:fortran *** |
| 305 |
CEH3 ;;; End: *** |
Parent Directory
| 
Revision Log
| 
Revision Graph