1 |
C $Header: /u/gcmpack/MITgcm/pkg/exch2/w2_eeboot.F,v 1.12 2009/06/28 01:00:23 jmc Exp $ |
2 |
C $Name: $ |
3 |
|
4 |
#include "CPP_EEOPTIONS.h" |
5 |
|
6 |
CBOP |
7 |
C !ROUTINE: W2_EEBOOT |
8 |
|
9 |
C !INTERFACE: |
10 |
SUBROUTINE W2_EEBOOT |
11 |
|
12 |
C !DESCRIPTION: |
13 |
C *==========================================================* |
14 |
C | SUBROUTINE W2_EEBOOT |
15 |
C | o Setup execution "environment" for WRAPPER2 |
16 |
C *==========================================================* |
17 |
C | WRAPPER2 provides complex topology support. In this routine |
18 |
C | we setup the base topology for the default halo operations. |
19 |
C *==========================================================* |
20 |
|
21 |
C !USES: |
22 |
IMPLICIT NONE |
23 |
|
24 |
#include "SIZE.h" |
25 |
#include "EEPARAMS.h" |
26 |
#include "EESUPPORT.h" |
27 |
#include "W2_EXCH2_SIZE.h" |
28 |
#include "W2_EXCH2_TOPOLOGY.h" |
29 |
#include "W2_EXCH2_PARAMS.h" |
30 |
#include "W2_EXCH2_BUFFER.h" |
31 |
CEOP |
32 |
|
33 |
C !FUNCTIONS: |
34 |
INTEGER ILNBLNK |
35 |
EXTERNAL ILNBLNK |
36 |
|
37 |
C == Local variables == |
38 |
INTEGER thisProc |
39 |
CHARACTER*(MAX_LEN_MBUF) msgBuf |
40 |
CHARACTER*(MAX_LEN_FNAM) fName |
41 |
c INTEGER W2_oUnit |
42 |
INTEGER stdUnit, iLen |
43 |
CHARACTER commFlag |
44 |
INTEGER myTileId |
45 |
INTEGER myThid, I, J |
46 |
INTEGER np, ii, jj, bi, bj |
47 |
INTEGER iErr, tNx, tNy |
48 |
|
49 |
C Set dummy myThid value (we are not multi-threaded here) |
50 |
myThid = 1 |
51 |
|
52 |
C Initialise to zero EXCH2_TOPOLOGY common blocks |
53 |
DO I = 1,W2_maxNbTiles |
54 |
exch2_tNx(I) = 0 |
55 |
exch2_tNy(I) = 0 |
56 |
exch2_tBasex(I) = 0 |
57 |
exch2_tBasey(I) = 0 |
58 |
exch2_txGlobalo(I) = 0 |
59 |
exch2_tyGlobalo(I) = 0 |
60 |
exch2_isWedge(I) = 0 |
61 |
exch2_isNedge(I) = 0 |
62 |
exch2_isEedge(I) = 0 |
63 |
exch2_isSedge(I) = 0 |
64 |
exch2_tProc(I) = 0 |
65 |
exch2_myFace(I) = 0 |
66 |
exch2_mydNx(I) = 0 |
67 |
exch2_mydNy(I) = 0 |
68 |
exch2_nNeighbours(I) = 0 |
69 |
DO J = 1,W2_maxNeighbours |
70 |
exch2_neighbourId(J,I) = 0 |
71 |
exch2_opposingSend(J,I) = 0 |
72 |
DO ii = 1,4 |
73 |
exch2_pij(ii,J,I) = 0 |
74 |
ENDDO |
75 |
exch2_oi(J,I) = 0 |
76 |
exch2_oj(J,I) = 0 |
77 |
exch2_iLo(J,I) = 0 |
78 |
exch2_iHi(J,I) = 0 |
79 |
exch2_jLo(J,I) = 0 |
80 |
exch2_jHi(J,I) = 0 |
81 |
ENDDO |
82 |
ENDDO |
83 |
W2_oUnit = standardMessageUnit |
84 |
|
85 |
C Set W2-EXCH2 parameters |
86 |
CALL W2_READPARMS( myThid ) |
87 |
|
88 |
stdUnit = standardMessageUnit |
89 |
WRITE(msgBuf,'(A)') '===== Start setting W2 TOPOLOGY:' |
90 |
CALL PRINT_MESSAGE( msgBuf, stdUnit, SQUEEZE_RIGHT, myThid ) |
91 |
|
92 |
C Open message output-file (if needed) |
93 |
IF ( W2_printMsg .LT. 0 ) THEN |
94 |
WRITE(fName,'(A,I4.4,A)') |
95 |
& 'w2_tile_topology.',myProcId,'.log' |
96 |
iLen = ILNBLNK(fName) |
97 |
CALL MDSFINDUNIT( W2_oUnit, myThid ) |
98 |
OPEN( W2_oUnit, file=fName(1:iLen), |
99 |
& status='unknown', form='formatted') |
100 |
WRITE(msgBuf,'(2A)') ' write to log-file: ', fName(1:iLen) |
101 |
CALL PRINT_MESSAGE( msgBuf, stdUnit, SQUEEZE_RIGHT, myThid ) |
102 |
ENDIF |
103 |
|
104 |
C Define topology for every tile |
105 |
CALL W2_E2SETUP( myThid ) |
106 |
|
107 |
C Decide which tiles this process handles - do this inline for now, but |
108 |
C should go in subroutine. |
109 |
C Set which rank processes "own" which tiles. This should probably |
110 |
C be queried as part of some hand-shaking but for now we use the |
111 |
C functional relationship that was used above. |
112 |
C Fill also W2_procTileList for Single-CPU-IO. |
113 |
|
114 |
C Number of tiles I handle is nSx*nSy |
115 |
thisProc = 1 |
116 |
#ifdef ALLOW_USE_MPI |
117 |
thisProc = 1+myPid |
118 |
#endif |
119 |
J = 0 |
120 |
DO I=1,nTiles |
121 |
IF ( exch2_myFace(I) .NE. 0 ) THEN |
122 |
C-- old ordering (makes no difference if nSy*nPy=1 ) |
123 |
c np = 1 + J/(nSx*nSy) |
124 |
c jj = MOD(J,nSx*nSy) |
125 |
c bj = 1 + jj/nSx |
126 |
c bi = 1 + MOD(jj,nSx) |
127 |
C-- new ordering: for single sub-domain (nFacets=1) case, match default setting |
128 |
jj = J/(nSx*nPx) |
129 |
ii = MOD(J,nSx*nPx) |
130 |
C-- natural way to order processors: |
131 |
c np = 1 + ii/nSx + (jj/nSy)*nPx |
132 |
C-- switch processor order to match MPI_CART set-up |
133 |
np = 1 + jj/nSy + (ii/nSx)*nPy |
134 |
bj = 1 + MOD(jj,nSy) |
135 |
bi = 1 + MOD(ii,nSx) |
136 |
C-- |
137 |
exch2_tProc(I) = np |
138 |
W2_procTileList(bi,bj,np) = I |
139 |
IF ( np.EQ.thisProc ) W2_myTileList(bi,bj) = I |
140 |
J = J + 1 |
141 |
ENDIF |
142 |
ENDDO |
143 |
IF ( J .NE. nSx*nSy*nPx*nPy ) THEN |
144 |
STOP |
145 |
& 'ERROR W2_EEBOOT: number of active tiles is not nPx*nSx*nPy*nSy' |
146 |
ENDIF |
147 |
|
148 |
C-- Check tile sizes |
149 |
iErr = 0 |
150 |
DO bj=1,nSy |
151 |
DO bi=1,nSx |
152 |
myTileId = W2_myTileList(bi,bj) |
153 |
tNx = exch2_tNx(myTileId) |
154 |
tNy = exch2_tNy(myTileId) |
155 |
IF ( tNx .NE. sNx ) THEN |
156 |
WRITE(msgBuf,'(3(A,I5))') |
157 |
& 'ERROR: S/R W2_EEBOOT Topology for tile', myTileId, |
158 |
& 'tNx=', tNx, ' is not equal to subgrid size sNx=', sNx |
159 |
CALL PRINT_MESSAGE(msgBuf, |
160 |
& errorMessageUnit, SQUEEZE_RIGHT, 1 ) |
161 |
iErr = iErr+1 |
162 |
ENDIF |
163 |
IF ( tNy .NE. sNy ) THEN |
164 |
WRITE(msgBuf,'(3(A,I5))') |
165 |
& 'ERROR: S/R W2_EEBOOT Topology for tile', myTileId, |
166 |
& 'tNy=', tNy, ' is not equal to subgrid size sNy=', sNy |
167 |
CALL PRINT_MESSAGE(msgBuf, |
168 |
& errorMessageUnit, SQUEEZE_RIGHT, 1 ) |
169 |
iErr = iErr+1 |
170 |
ENDIF |
171 |
ENDDO |
172 |
ENDDO |
173 |
IF ( iErr .NE. 0 ) THEN |
174 |
STOP 'ABNORMAL END: W2_EEBOOT' |
175 |
ENDIF |
176 |
|
177 |
C-- Print tiles connection for this process and set myCommonFlag : |
178 |
WRITE(msgBuf,'(A)') '===== W2 TILE TOPOLOGY =====' |
179 |
CALL PRINT_MESSAGE( msgBuf, W2_oUnit, SQUEEZE_BOTH, myThid ) |
180 |
DO bj=1,nSy |
181 |
DO bi=1,nSx |
182 |
myTileId = W2_myTileList(bi,bj) |
183 |
c WRITE(msgBuf,'(A,I4)') ' TILE: ', myTileId |
184 |
WRITE(msgBuf,'(A,I5,A,I3)') ' TILE: ', myTileId, |
185 |
& ' , Nb of Neighbours =', exch2_nNeighbours(myTileId) |
186 |
CALL PRINT_MESSAGE( msgBuf, W2_oUnit, SQUEEZE_RIGHT, myThid ) |
187 |
DO J=1,exch2_nNeighbours(myTileId) |
188 |
commFlag = 'M' |
189 |
DO jj=1,nSy |
190 |
DO ii=1,nSx |
191 |
IF ( W2_myTileList(ii,jj).EQ.exch2_neighbourId(J,myTileId) ) |
192 |
& commFlag = 'P' |
193 |
ENDDO |
194 |
ENDDO |
195 |
IF ( commFlag .EQ. 'M' ) THEN |
196 |
WRITE(msgBuf,'(A,I3,A,I5,A,I3,2A,I5,A)') |
197 |
& ' NEIGHBOUR',J,' = TILE', exch2_neighbourId(J,myTileId), |
198 |
& ' (n=', exch2_opposingSend(J,myTileId), ') Comm = MSG', |
199 |
& ' (PROC=',exch2_tProc(exch2_neighbourId(J,myTileId)),')' |
200 |
CALL PRINT_MESSAGE( msgBuf, W2_oUnit, SQUEEZE_RIGHT, myThid ) |
201 |
ENDIF |
202 |
IF ( commFlag .EQ. 'P' ) THEN |
203 |
WRITE(msgBuf,'(A,I3,A,I5,A,I3,2A,I5,A)') |
204 |
& ' NEIGHBOUR',J,' = TILE', exch2_neighbourId(J,myTileId), |
205 |
& ' (n=', exch2_opposingSend(J,myTileId), ') Comm = PUT', |
206 |
& ' (PROC=',exch2_tProc(exch2_neighbourId(J,myTileId)),')' |
207 |
CALL PRINT_MESSAGE( msgBuf, W2_oUnit, SQUEEZE_RIGHT, myThid ) |
208 |
ENDIF |
209 |
W2_myCommFlag(J,bi,bj) = commFlag |
210 |
ENDDO |
211 |
ENDDO |
212 |
ENDDO |
213 |
|
214 |
C Set filling value for face-corner halo regions |
215 |
e2FillValue_RL = 0. _d 0 |
216 |
e2FillValue_RS = 0. _d 0 |
217 |
e2FillValue_R4 = 0.e0 |
218 |
e2FillValue_R8 = 0.d0 |
219 |
C- for testing only: put a large value (should not affects the results) |
220 |
c e2FillValue_RL = 1. _d+20 |
221 |
c e2FillValue_RS = 1. _d+20 |
222 |
c e2FillValue_R4 = 1.e+20 |
223 |
c e2FillValue_R8 = 1.d+20 |
224 |
|
225 |
C Print out the topology communication schedule |
226 |
IF ( W2_printMsg .NE. 0 ) THEN |
227 |
CALL W2_PRINT_COMM_SEQUENCE( myThid ) |
228 |
ENDIF |
229 |
|
230 |
C Close message output-file (if needed) |
231 |
IF ( W2_oUnit.NE.standardMessageUnit ) THEN |
232 |
WRITE(msgBuf,'(A)') '=== End TOPOLOGY report ===' |
233 |
CALL PRINT_MESSAGE( msgBuf, W2_oUnit, SQUEEZE_BOTH, myThid ) |
234 |
CLOSE( W2_oUnit ) |
235 |
ENDIF |
236 |
WRITE(msgBuf,'(A)') '===== setting W2 TOPOLOGY: Done' |
237 |
CALL PRINT_MESSAGE( msgBuf, stdUnit, SQUEEZE_RIGHT, myThid ) |
238 |
WRITE(msgBuf,'(A)') ' ' |
239 |
CALL PRINT_MESSAGE( msgBuf, stdUnit, SQUEEZE_RIGHT, myThid ) |
240 |
|
241 |
RETURN |
242 |
END |