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jmc |
1.14 |
C $Header: /u/gcmpack/MITgcm/eesupp/src/global_sum.F,v 1.13 2009/04/23 19:18:14 jmc Exp $ |
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adcroft |
1.9 |
C $Name: $ |
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cnh |
1.1 |
|
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jmc |
1.14 |
#include "CPP_EEOPTIONS.h" |
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|
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cnh |
1.1 |
C-- File global_sum.F: Routines that perform global sum on an array |
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C of thread values. |
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C Contents |
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jmc |
1.13 |
C o GLOBAL_SUM_R4 |
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C o GLOBAL_SUM_R8 |
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C o GLOBAL_SUM_INT |
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|
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jmc |
1.14 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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cnh |
1.10 |
CBOP |
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C !ROUTINE: GLOBAL_SUM_R4 |
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C !INTERFACE: |
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jmc |
1.13 |
SUBROUTINE GLOBAL_SUM_R4( |
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adcroft |
1.6 |
U sumPhi, |
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cnh |
1.1 |
I myThid ) |
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jmc |
1.13 |
|
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cnh |
1.10 |
C !DESCRIPTION: |
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C *==========================================================* |
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jmc |
1.13 |
C | SUBROUTINE GLOBAL\_SUM\_R4 |
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C | o Handle sum for real*4 data. |
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cnh |
1.10 |
C *==========================================================* |
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jmc |
1.13 |
C | Perform sum an array of one value per thread and then |
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C | sum result of all the processes. |
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C | Notes: |
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C | Within a process only one thread does the sum. |
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C | The same thread also does the inter-process sum for |
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C | example with MPI and then writes the result into a shared |
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C | location. All threads wait until the sum is avaiailable. |
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cnh |
1.10 |
C *==========================================================* |
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cnh |
1.1 |
|
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cnh |
1.10 |
C !USES: |
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jmc |
1.13 |
IMPLICIT NONE |
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|
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cnh |
1.1 |
C == Global data == |
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#include "SIZE.h" |
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#include "EEPARAMS.h" |
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#include "EESUPPORT.h" |
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adcroft |
1.9 |
#include "GLOBAL_SUM.h" |
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cnh |
1.1 |
|
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cnh |
1.10 |
C !INPUT/OUTPUT PARAMETERS: |
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cnh |
1.1 |
C == Routine arguments == |
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jmc |
1.14 |
C sumPhi :: Result of sum. |
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C myThid :: My thread id. |
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cnh |
1.1 |
Real*4 sumPhi |
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INTEGER myThid |
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|
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cnh |
1.10 |
C !LOCAL VARIABLES: |
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cnh |
1.1 |
C == Local variables == |
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jmc |
1.14 |
C I :: Loop counters |
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C mpiRC :: MPI return code |
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cnh |
1.1 |
INTEGER I |
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Real*4 tmp |
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#ifdef ALLOW_USE_MPI |
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INTEGER mpiRC |
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#endif /* ALLOW_USE_MPI */ |
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cnh |
1.10 |
CEOP |
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cnh |
1.1 |
|
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adcroft |
1.6 |
C-- write local sum into array |
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jmc |
1.14 |
phiGSR4(1,myThid) = sumPhi |
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adcroft |
1.6 |
|
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cnh |
1.4 |
C-- Can not start until everyone is ready |
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adcroft |
1.9 |
CALL BAR2( myThid ) |
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cnh |
1.1 |
|
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C-- Sum within the process first |
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_BEGIN_MASTER( myThid ) |
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tmp = 0. |
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DO I=1,nThreads |
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jmc |
1.14 |
tmp = tmp + phiGSR4(1,I) |
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cnh |
1.1 |
ENDDO |
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sumPhi = tmp |
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#ifdef ALLOW_USE_MPI |
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#ifndef ALWAYS_USE_MPI |
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IF ( usingMPI ) THEN |
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#endif |
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CALL MPI_Allreduce(tmp,sumPhi,1,MPI_REAL,MPI_SUM, |
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jmc |
1.11 |
& MPI_COMM_MODEL,mpiRC) |
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cnh |
1.1 |
#ifndef ALWAYS_USE_MPI |
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ENDIF |
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#endif |
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#endif /* ALLOW_USE_MPI */ |
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adcroft |
1.6 |
C-- Write solution to place where all threads can see it |
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jmc |
1.14 |
phiGSR4(1,0) = sumPhi |
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adcroft |
1.6 |
|
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cnh |
1.1 |
_END_MASTER( myThid ) |
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C-- |
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adcroft |
1.9 |
CALL BAR2( myThid ) |
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adcroft |
1.6 |
|
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C-- set result for every process |
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jmc |
1.14 |
sumPhi = phiGSR4(1,1) |
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adcroft |
1.6 |
|
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cnh |
1.1 |
RETURN |
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END |
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jmc |
1.13 |
|
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cnh |
1.1 |
|
100 |
jmc |
1.14 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
101 |
cnh |
1.10 |
CBOP |
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C !ROUTINE: GLOBAL_SUM_R8 |
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C !INTERFACE: |
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jmc |
1.13 |
SUBROUTINE GLOBAL_SUM_R8( |
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adcroft |
1.6 |
U sumPhi, |
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cnh |
1.1 |
I myThid ) |
108 |
jmc |
1.14 |
|
109 |
cnh |
1.10 |
C !DESCRIPTION: |
110 |
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C *==========================================================* |
111 |
jmc |
1.13 |
C | SUBROUTINE GLOBAL\_SUM\_R8 |
112 |
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C | o Handle sum for real*8 data. |
113 |
cnh |
1.10 |
C *==========================================================* |
114 |
jmc |
1.13 |
C | Perform sum an array of one value per thread and then |
115 |
|
|
C | sum result of all the processes. |
116 |
|
|
C | Notes: |
117 |
|
|
C | Within a process only one thread does the sum. |
118 |
|
|
C | The same thread also does the inter-process sum for |
119 |
|
|
C | example with MPI and then writes the result into a shared |
120 |
|
|
C | location. All threads wait until the sum is avaiailable. |
121 |
cnh |
1.10 |
C *==========================================================* |
122 |
cnh |
1.1 |
|
123 |
cnh |
1.10 |
C !USES: |
124 |
jmc |
1.14 |
IMPLICIT NONE |
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|
126 |
cnh |
1.1 |
C === Global data === |
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#include "SIZE.h" |
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#include "EEPARAMS.h" |
129 |
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#include "EESUPPORT.h" |
130 |
adcroft |
1.9 |
#include "GLOBAL_SUM.h" |
131 |
cnh |
1.1 |
|
132 |
cnh |
1.10 |
C !INPUT/OUTPUT PARAMETERS: |
133 |
cnh |
1.1 |
C === Routine arguments === |
134 |
jmc |
1.14 |
C sumPhi :: Result of sum. |
135 |
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C myThid :: My thread id. |
136 |
cnh |
1.1 |
Real*8 sumPhi |
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INTEGER myThid |
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|
139 |
cnh |
1.10 |
C !LOCAL VARIABLES: |
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cnh |
1.1 |
C === Local variables === |
141 |
jmc |
1.14 |
C I :: Loop counters |
142 |
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C mpiRC :: MPI return code |
143 |
cnh |
1.1 |
INTEGER I |
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Real*8 tmp |
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#ifdef ALLOW_USE_MPI |
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INTEGER mpiRC |
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#endif /* ALLOW_USE_MPI */ |
148 |
cnh |
1.10 |
CEOP |
149 |
cnh |
1.1 |
|
150 |
adcroft |
1.6 |
C-- write local sum into array |
151 |
jmc |
1.14 |
phiGSR8(1,myThid) = sumPhi |
152 |
adcroft |
1.6 |
|
153 |
cnh |
1.4 |
C-- Can not start until everyone is ready |
154 |
jmc |
1.14 |
C CALL FOOL_THE_COMPILER( phiGSR8 ) |
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adcroft |
1.9 |
C CALL MS |
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CALL BAR2( myThid ) |
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C _BARRIER |
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C _BARRIER |
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jmc |
1.14 |
C CALL FOOL_THE_COMPILER( phiGSR8 ) |
160 |
cnh |
1.1 |
|
161 |
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C-- Sum within the process first |
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_BEGIN_MASTER( myThid ) |
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tmp = 0. _d 0 |
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DO I=1,nThreads |
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jmc |
1.14 |
tmp = tmp + phiGSR8(1,I) |
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cnh |
1.1 |
ENDDO |
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sumPhi = tmp |
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#ifdef ALLOW_USE_MPI |
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#ifndef ALWAYS_USE_MPI |
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IF ( usingMPI ) THEN |
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#endif |
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CALL MPI_Allreduce(tmp,sumPhi,1,MPI_DOUBLE_PRECISION,MPI_SUM, |
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jmc |
1.11 |
& MPI_COMM_MODEL,mpiRC) |
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heimbach |
1.7 |
#ifndef ALWAYS_USE_MPI |
175 |
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ENDIF |
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#endif |
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#endif /* ALLOW_USE_MPI */ |
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C-- Write solution to place where all threads can see it |
179 |
jmc |
1.14 |
phiGSR8(1,0) = sumPhi |
180 |
heimbach |
1.7 |
_END_MASTER( myThid ) |
181 |
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|
182 |
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C-- Do not leave until we are sure that the sum is done |
183 |
jmc |
1.14 |
C CALL FOOL_THE_COMPILER( phiGSR8 ) |
184 |
adcroft |
1.9 |
C CALL MS |
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C _BARRIER |
186 |
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C _BARRIER |
187 |
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CALL BAR2( myThid ) |
188 |
jmc |
1.14 |
C CALL FOOL_THE_COMPILER( phiGSR8 ) |
189 |
heimbach |
1.7 |
|
190 |
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C-- set result for every process |
191 |
jmc |
1.14 |
sumPhi = phiGSR8(1,0) |
192 |
heimbach |
1.7 |
|
193 |
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RETURN |
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END |
195 |
cnh |
1.10 |
|
196 |
jmc |
1.14 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
197 |
cnh |
1.10 |
CBOP |
198 |
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C !ROUTINE: GLOBAL_SUM_INT |
199 |
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C !INTERFACE: |
200 |
jmc |
1.13 |
SUBROUTINE GLOBAL_SUM_INT( |
201 |
heimbach |
1.7 |
U sumPhi, |
202 |
|
|
I myThid ) |
203 |
jmc |
1.14 |
|
204 |
cnh |
1.10 |
C !DESCRIPTION: |
205 |
|
|
C *==========================================================* |
206 |
jmc |
1.13 |
C | SUBROUTINE GLOBAL\_SUM\_INT |
207 |
|
|
C | o Handle sum for integer data. |
208 |
cnh |
1.10 |
C *==========================================================* |
209 |
jmc |
1.13 |
C | Perform sum an array of one value per thread and then |
210 |
|
|
C | sum result of all the processes. |
211 |
|
|
C | Notes: |
212 |
|
|
C | Within a process only one thread does the sum. |
213 |
|
|
C | The same thread also does the inter-process sum for |
214 |
|
|
C | example with MPI and then writes the result into a shared |
215 |
|
|
C | location. All threads wait until the sum is avaiailable. |
216 |
cnh |
1.10 |
C *==========================================================* |
217 |
heimbach |
1.7 |
|
218 |
cnh |
1.10 |
C !USES: |
219 |
jmc |
1.14 |
IMPLICIT NONE |
220 |
|
|
|
221 |
heimbach |
1.7 |
C === Global data === |
222 |
|
|
#include "SIZE.h" |
223 |
|
|
#include "EEPARAMS.h" |
224 |
|
|
#include "EESUPPORT.h" |
225 |
adcroft |
1.9 |
#include "GLOBAL_SUM.h" |
226 |
heimbach |
1.7 |
|
227 |
cnh |
1.10 |
C !INPUT/OUTPUT PARAMETERS: |
228 |
heimbach |
1.7 |
C === Routine arguments === |
229 |
jmc |
1.14 |
C sumPhi :: Result of sum. |
230 |
|
|
C myThid :: My thread id. |
231 |
heimbach |
1.7 |
INTEGER sumPhi |
232 |
|
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INTEGER myThid |
233 |
|
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|
234 |
cnh |
1.10 |
C !LOCAL VARIABLES: |
235 |
heimbach |
1.7 |
C === Local variables === |
236 |
jmc |
1.14 |
C I :: Loop counters |
237 |
|
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C mpiRC :: MPI return code |
238 |
heimbach |
1.7 |
INTEGER I |
239 |
|
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INTEGER tmp |
240 |
|
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#ifdef ALLOW_USE_MPI |
241 |
|
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INTEGER mpiRC |
242 |
|
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#endif /* ALLOW_USE_MPI */ |
243 |
cnh |
1.10 |
CEOP |
244 |
heimbach |
1.7 |
|
245 |
|
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C-- write local sum into array |
246 |
adcroft |
1.9 |
phiGSI(1,myThid) = sumPhi |
247 |
heimbach |
1.7 |
|
248 |
|
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C-- Can not start until everyone is ready |
249 |
|
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_BARRIER |
250 |
|
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|
251 |
|
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C-- Sum within the process first |
252 |
|
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_BEGIN_MASTER( myThid ) |
253 |
jmc |
1.13 |
tmp = 0 |
254 |
heimbach |
1.7 |
DO I=1,nThreads |
255 |
adcroft |
1.9 |
tmp = tmp + phiGSI(1,I) |
256 |
heimbach |
1.7 |
ENDDO |
257 |
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sumPhi = tmp |
258 |
|
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#ifdef ALLOW_USE_MPI |
259 |
|
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#ifndef ALWAYS_USE_MPI |
260 |
|
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IF ( usingMPI ) THEN |
261 |
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#endif |
262 |
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CALL MPI_Allreduce(tmp,sumPhi,1,MPI_INTEGER,MPI_SUM, |
263 |
jmc |
1.11 |
& MPI_COMM_MODEL,mpiRC) |
264 |
cnh |
1.1 |
#ifndef ALWAYS_USE_MPI |
265 |
|
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ENDIF |
266 |
|
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#endif |
267 |
|
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#endif /* ALLOW_USE_MPI */ |
268 |
|
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C-- Write solution to place where all threads can see it |
269 |
jmc |
1.14 |
phiGSI(1,0) = sumPhi |
270 |
cnh |
1.1 |
_END_MASTER( myThid ) |
271 |
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|
272 |
cnh |
1.4 |
C-- Do not leave until we are sure that the sum is done |
273 |
cnh |
1.1 |
_BARRIER |
274 |
adcroft |
1.6 |
|
275 |
|
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C-- set result for every process |
276 |
jmc |
1.14 |
sumPhi = phiGSI(1,0) |
277 |
adcroft |
1.6 |
|
278 |
cnh |
1.1 |
RETURN |
279 |
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END |