| 1 |
C $Header: /u/gcmpack/MITgcm/eesupp/src/gather_2d_rx.template,v 1.5 2009/06/08 03:34:03 jmc Exp $ |
| 2 |
C $Name: $ |
| 3 |
|
| 4 |
#include "PACKAGES_CONFIG.h" |
| 5 |
#include "CPP_EEOPTIONS.h" |
| 6 |
|
| 7 |
CBOP |
| 8 |
C !ROUTINE: GATHER_2D_RX |
| 9 |
C !INTERFACE: |
| 10 |
SUBROUTINE GATHER_2D_RX( |
| 11 |
O gloBuff, |
| 12 |
I myField, |
| 13 |
I xSize, ySize, |
| 14 |
I useExch2GlobLayOut, |
| 15 |
I zeroBuff, |
| 16 |
I myThid ) |
| 17 |
C !DESCRIPTION: |
| 18 |
C Gather elements of a global 2-D array from all mpi processes to process 0. |
| 19 |
C Note: done by Master-Thread ; might need barrier calls before and after |
| 20 |
C this S/R call. |
| 21 |
|
| 22 |
C !USES: |
| 23 |
IMPLICIT NONE |
| 24 |
#include "SIZE.h" |
| 25 |
#include "EEPARAMS.h" |
| 26 |
#include "EESUPPORT.h" |
| 27 |
#ifdef ALLOW_EXCH2 |
| 28 |
#include "W2_EXCH2_SIZE.h" |
| 29 |
#include "W2_EXCH2_TOPOLOGY.h" |
| 30 |
#endif /* ALLOW_EXCH2 */ |
| 31 |
|
| 32 |
C !INPUT/OUTPUT PARAMETERS: |
| 33 |
C gloBuff ( _RX ) :: full-domain 2D IO-buffer array (Output) |
| 34 |
C myField ( _RX ) :: tiled, local (i.e. my Proc. tiles) 2D array (Input) |
| 35 |
C xSize (integer):: global buffer 1rst dim (x) |
| 36 |
C ySize (integer):: global buffer 2nd dim (y) |
| 37 |
C useExch2GlobLayOut:: =T: Use Exch2 global-map layout (only with EXCH2) |
| 38 |
C zeroBuff (logical):: =T: initialise the buffer to zero before copy |
| 39 |
C myThid (integer):: my Thread Id number |
| 40 |
|
| 41 |
INTEGER xSize, ySize |
| 42 |
_RX gloBuff(xSize,ySize) |
| 43 |
_RX myField(1:sNx,1:sNy,nSx,nSy) |
| 44 |
LOGICAL useExch2GlobLayOut |
| 45 |
LOGICAL zeroBuff |
| 46 |
INTEGER myThid |
| 47 |
CEOP |
| 48 |
|
| 49 |
C !LOCAL VARIABLES: |
| 50 |
INTEGER i,j, bi,bj |
| 51 |
INTEGER iG, jG |
| 52 |
INTEGER iBase, jBase |
| 53 |
#ifdef ALLOW_EXCH2 |
| 54 |
INTEGER iGjLoc, jGjLoc |
| 55 |
INTEGER tN |
| 56 |
#endif /* ALLOW_EXCH2 */ |
| 57 |
#ifdef ALLOW_USE_MPI |
| 58 |
INTEGER np0, np |
| 59 |
_RX temp(1:sNx,1:sNy,nSx,nSy) |
| 60 |
INTEGER istatus(MPI_STATUS_SIZE), ierr |
| 61 |
INTEGER lbuff, idest, itag, ready_to_receive |
| 62 |
#endif /* ALLOW_USE_MPI */ |
| 63 |
|
| 64 |
_BEGIN_MASTER( myThid ) |
| 65 |
|
| 66 |
IF( myProcId .EQ. 0 ) THEN |
| 67 |
C-- Process 0 fills-in its local data |
| 68 |
|
| 69 |
#ifdef ALLOW_EXCH2 |
| 70 |
IF ( useExch2GlobLayOut ) THEN |
| 71 |
C-- If using blank-tiles, buffer will not be completely filled; |
| 72 |
C safer to reset to zero to avoid unknown values in output file |
| 73 |
IF ( zeroBuff ) THEN |
| 74 |
DO j=1,ySize |
| 75 |
DO i=1,xSize |
| 76 |
gloBuff(i,j) = 0. |
| 77 |
ENDDO |
| 78 |
ENDDO |
| 79 |
ENDIF |
| 80 |
|
| 81 |
DO bj=1,nSy |
| 82 |
DO bi=1,nSx |
| 83 |
tN = W2_myTileList(bi,bj) |
| 84 |
IF ( exch2_mydNx(tN) .GT. xSize ) THEN |
| 85 |
C- face x-size larger than glob-size : fold it |
| 86 |
iGjLoc = 0 |
| 87 |
jGjLoc = exch2_mydNx(tN) / xSize |
| 88 |
ELSEIF ( exch2_tNy(tN) .GT. ySize ) THEN |
| 89 |
C- tile y-size larger than glob-size : make a long line |
| 90 |
iGjLoc = exch2_mydNx(tN) |
| 91 |
jGjLoc = 0 |
| 92 |
ELSE |
| 93 |
C- default (face fit into global-IO-array) |
| 94 |
iGjLoc = 0 |
| 95 |
jGjLoc = 1 |
| 96 |
ENDIF |
| 97 |
|
| 98 |
DO j=1,sNy |
| 99 |
#ifdef TARGET_NEC_SX |
| 100 |
!cdir novector |
| 101 |
#endif |
| 102 |
iG=exch2_txGlobalo(tN)+iGjLoc*(j-1)-1 |
| 103 |
jG=exch2_tyGlobalo(tN)+jGjLoc*(j-1) |
| 104 |
DO i=1,sNx |
| 105 |
gloBuff(iG+i,jG) = myField(i,j,bi,bj) |
| 106 |
ENDDO |
| 107 |
ENDDO |
| 108 |
|
| 109 |
ENDDO |
| 110 |
ENDDO |
| 111 |
|
| 112 |
ELSE |
| 113 |
#else /* ALLOW_EXCH2 */ |
| 114 |
IF (.TRUE.) THEN |
| 115 |
#endif /* ALLOW_EXCH2 */ |
| 116 |
|
| 117 |
iBase = myXGlobalLo-1 |
| 118 |
jBase = myYGlobalLo-1 |
| 119 |
|
| 120 |
DO bj=1,nSy |
| 121 |
DO bi=1,nSx |
| 122 |
DO j=1,sNy |
| 123 |
#ifdef TARGET_NEC_SX |
| 124 |
!cdir novector |
| 125 |
#endif |
| 126 |
iG = iBase+(bi-1)*sNx |
| 127 |
jG = jBase+(bj-1)*sNy+j |
| 128 |
DO i=1,sNx |
| 129 |
gloBuff(iG+i,jG) = myField(i,j,bi,bj) |
| 130 |
ENDDO |
| 131 |
ENDDO |
| 132 |
ENDDO |
| 133 |
ENDDO |
| 134 |
|
| 135 |
C end if-else useExch2GlobLayOut |
| 136 |
ENDIF |
| 137 |
|
| 138 |
C- end if myProcId = 0 |
| 139 |
ENDIF |
| 140 |
|
| 141 |
#ifdef ALLOW_USE_MPI |
| 142 |
|
| 143 |
lbuff = sNx*nSx*sNy*nSy |
| 144 |
idest = 0 |
| 145 |
itag = 0 |
| 146 |
ready_to_receive = 0 |
| 147 |
|
| 148 |
IF( mpiMyId .EQ. 0 ) THEN |
| 149 |
|
| 150 |
C-- Process 0 polls and receives data from each process in turn |
| 151 |
DO np = 2, numberOfProcs |
| 152 |
np0 = np - 1 |
| 153 |
#ifndef DISABLE_MPI_READY_TO_RECEIVE |
| 154 |
CALL MPI_SEND (ready_to_receive, 1, MPI_INTEGER, |
| 155 |
& np0, itag, MPI_COMM_MODEL, ierr) |
| 156 |
#endif |
| 157 |
CALL MPI_RECV (temp, lbuff, _MPI_TYPE_RX, |
| 158 |
& np0, itag, MPI_COMM_MODEL, istatus, ierr) |
| 159 |
|
| 160 |
C-- Process 0 gathers the local arrays into the global buffer. |
| 161 |
#ifdef ALLOW_EXCH2 |
| 162 |
IF ( useExch2GlobLayOut ) THEN |
| 163 |
|
| 164 |
DO bj=1,nSy |
| 165 |
DO bi=1,nSx |
| 166 |
tN = W2_procTileList(bi,bj,np) |
| 167 |
IF ( exch2_mydNx(tN) .GT. xSize ) THEN |
| 168 |
C- face x-size larger than glob-size : fold it |
| 169 |
iGjLoc = 0 |
| 170 |
jGjLoc = exch2_mydNx(tN) / xSize |
| 171 |
ELSEIF ( exch2_tNy(tN) .GT. ySize ) THEN |
| 172 |
C- tile y-size larger than glob-size : make a long line |
| 173 |
iGjLoc = exch2_mydNx(tN) |
| 174 |
jGjLoc = 0 |
| 175 |
ELSE |
| 176 |
C- default (face fit into global-IO-array) |
| 177 |
iGjLoc = 0 |
| 178 |
jGjLoc = 1 |
| 179 |
ENDIF |
| 180 |
|
| 181 |
DO j=1,sNy |
| 182 |
#ifdef TARGET_NEC_SX |
| 183 |
!cdir novector |
| 184 |
#endif |
| 185 |
iG=exch2_txGlobalo(tN)+iGjLoc*(j-1)-1 |
| 186 |
jG=exch2_tyGlobalo(tN)+jGjLoc*(j-1) |
| 187 |
DO i=1,sNx |
| 188 |
gloBuff(iG+i,jG) = temp(i,j,bi,bj) |
| 189 |
ENDDO |
| 190 |
ENDDO |
| 191 |
|
| 192 |
ENDDO |
| 193 |
ENDDO |
| 194 |
|
| 195 |
ELSE |
| 196 |
#else /* ALLOW_EXCH2 */ |
| 197 |
IF (.TRUE.) THEN |
| 198 |
#endif /* ALLOW_EXCH2 */ |
| 199 |
|
| 200 |
iBase = mpi_myXGlobalLo(np)-1 |
| 201 |
jBase = mpi_myYGlobalLo(np)-1 |
| 202 |
|
| 203 |
DO bj=1,nSy |
| 204 |
DO bi=1,nSx |
| 205 |
DO j=1,sNy |
| 206 |
#ifdef TARGET_NEC_SX |
| 207 |
!cdir novector |
| 208 |
#endif |
| 209 |
iG = iBase+(bi-1)*sNx |
| 210 |
jG = jBase+(bj-1)*sNy+j |
| 211 |
DO i=1,sNx |
| 212 |
gloBuff(iG+i,jG) = temp(i,j,bi,bj) |
| 213 |
ENDDO |
| 214 |
ENDDO |
| 215 |
ENDDO |
| 216 |
ENDDO |
| 217 |
|
| 218 |
C end if-else useExch2GlobLayOut |
| 219 |
ENDIF |
| 220 |
|
| 221 |
C- end loop on np |
| 222 |
ENDDO |
| 223 |
|
| 224 |
ELSE |
| 225 |
|
| 226 |
C-- All proceses except 0 wait to be polled then send local array |
| 227 |
#ifndef DISABLE_MPI_READY_TO_RECEIVE |
| 228 |
CALL MPI_RECV (ready_to_receive, 1, MPI_INTEGER, |
| 229 |
& idest, itag, MPI_COMM_MODEL, istatus, ierr) |
| 230 |
#endif |
| 231 |
CALL MPI_SEND (myField, lbuff, _MPI_TYPE_RX, |
| 232 |
& idest, itag, MPI_COMM_MODEL, ierr) |
| 233 |
|
| 234 |
ENDIF |
| 235 |
|
| 236 |
#endif /* ALLOW_USE_MPI */ |
| 237 |
|
| 238 |
_END_MASTER( myThid ) |
| 239 |
|
| 240 |
RETURN |
| 241 |
END |
Parent Directory
| 
Revision Log
| 
Revision Graph