| 1 |
jmc |
1.11 |
C $Header: /u/gcmpack/MITgcm/eesupp/src/global_sum.F,v 1.10 2001/09/21 03:54:35 cnh Exp $ |
| 2 |
adcroft |
1.9 |
C $Name: $ |
| 3 |
cnh |
1.1 |
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| 4 |
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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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C o global_sum_r4 |
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C o global_sum_r8 |
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#include "CPP_EEOPTIONS.h" |
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| 11 |
cnh |
1.10 |
CBOP |
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C !ROUTINE: GLOBAL_SUM_R4 |
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C !INTERFACE: |
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cnh |
1.1 |
SUBROUTINE GLOBAL_SUM_R4( |
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adcroft |
1.6 |
U sumPhi, |
| 17 |
cnh |
1.1 |
I myThid ) |
| 18 |
adcroft |
1.6 |
IMPLICIT NONE |
| 19 |
cnh |
1.10 |
C !DESCRIPTION: |
| 20 |
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C *==========================================================* |
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C | SUBROUTINE GLOBAL_SUM_R4 |
| 22 |
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C | o Handle sum for real*4 data. |
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C *==========================================================* |
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C | Perform sum an array of one value per thread and then |
| 25 |
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C | sum result of all the processes. |
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C | Notes |
| 27 |
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C | ===== |
| 28 |
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C | Within a process only one thread does the sum, each |
| 29 |
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C | thread is assumed to have already summed its local data. |
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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 |
| 32 |
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C | location. All threads wait until the sum is avaiailable. |
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C *==========================================================* |
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cnh |
1.1 |
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cnh |
1.10 |
C !USES: |
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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 |
|
| 42 |
cnh |
1.10 |
C !INPUT/OUTPUT PARAMETERS: |
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cnh |
1.1 |
C == Routine arguments == |
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C sumPhi - Result of sum. |
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C myThid - My thread id. |
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Real*4 sumPhi |
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INTEGER myThid |
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cnh |
1.10 |
C !LOCAL VARIABLES: |
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cnh |
1.1 |
C == Local variables == |
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C I - Loop counters |
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C mpiRC - MPI return code |
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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 |
| 59 |
cnh |
1.1 |
|
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adcroft |
1.6 |
C-- write local sum into array |
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adcroft |
1.9 |
CALL BAR2( myThid ) |
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phiGSRS(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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adcroft |
1.9 |
tmp = tmp + phiGSRS(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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adcroft |
1.9 |
phiGSRS(1,1) = 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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adcroft |
1.9 |
sumPhi = phiGSRS(1,1) |
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CALL BAR2( myThid ) |
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adcroft |
1.6 |
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cnh |
1.1 |
RETURN |
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END |
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cnh |
1.10 |
CBOP |
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C !ROUTINE: GLOBAL_SUM_R8 |
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C !INTERFACE: |
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cnh |
1.1 |
SUBROUTINE GLOBAL_SUM_R8( |
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adcroft |
1.6 |
U sumPhi, |
| 105 |
cnh |
1.1 |
I myThid ) |
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cnh |
1.10 |
IMPLICIT NONE |
| 107 |
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C !DESCRIPTION: |
| 108 |
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C *==========================================================* |
| 109 |
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C | SUBROUTINE GLOBAL_SUM_R8 |
| 110 |
|
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C | o Handle sum for real*8 data. |
| 111 |
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C *==========================================================* |
| 112 |
|
|
C | Perform sum an array of one value per thread and then |
| 113 |
|
|
C | sum result of all the processes. |
| 114 |
|
|
C | Notes |
| 115 |
|
|
C | ===== |
| 116 |
|
|
C | Within a process only one thread does the sum, each |
| 117 |
|
|
C | thread is assumed to have already summed its local data. |
| 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 |
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C *==========================================================* |
| 122 |
cnh |
1.1 |
|
| 123 |
cnh |
1.10 |
C !USES: |
| 124 |
cnh |
1.1 |
C === Global data === |
| 125 |
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#include "SIZE.h" |
| 126 |
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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: |
| 131 |
cnh |
1.1 |
C === Routine arguments === |
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C sumPhi - Result of sum. |
| 133 |
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C myThid - My thread id. |
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Real*8 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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C I - Loop counters |
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C mpiRC - MPI return code |
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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 */ |
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cnh |
1.10 |
CEOP |
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cnh |
1.1 |
|
| 148 |
adcroft |
1.9 |
CALL BAR2( myThid ) |
| 149 |
adcroft |
1.6 |
C-- write local sum into array |
| 150 |
adcroft |
1.9 |
phiGSRL(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 |
| 153 |
adcroft |
1.9 |
C CALL FOOL_THE_COMPILER( phiGSRL ) |
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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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C CALL FOOL_THE_COMPILER( phiGSRL ) |
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cnh |
1.1 |
|
| 160 |
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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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adcroft |
1.9 |
tmp = tmp + phiGSRL(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 |
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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 |
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adcroft |
1.9 |
phiGSRL(1,1) = sumPhi |
| 179 |
heimbach |
1.7 |
_END_MASTER( myThid ) |
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|
| 181 |
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C-- Do not leave until we are sure that the sum is done |
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adcroft |
1.9 |
C CALL FOOL_THE_COMPILER( phiGSRL ) |
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C CALL MS |
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C _BARRIER |
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C _BARRIER |
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CALL BAR2( myThid ) |
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C CALL FOOL_THE_COMPILER( phiGSRL ) |
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heimbach |
1.7 |
|
| 189 |
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C-- set result for every process |
| 190 |
adcroft |
1.9 |
sumPhi = phiGSRL(1,1) |
| 191 |
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CALL BAR2( myThid ) |
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heimbach |
1.7 |
|
| 193 |
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RETURN |
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END |
| 195 |
cnh |
1.10 |
|
| 196 |
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CBOP |
| 197 |
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C !ROUTINE: GLOBAL_SUM_INT |
| 198 |
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C !INTERFACE: |
| 199 |
heimbach |
1.7 |
SUBROUTINE GLOBAL_SUM_INT( |
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U sumPhi, |
| 201 |
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I myThid ) |
| 202 |
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IMPLICIT NONE |
| 203 |
cnh |
1.10 |
C !DESCRIPTION: |
| 204 |
|
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C *==========================================================* |
| 205 |
|
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C | SUBROUTINE GLOBAL_SUM_INT |
| 206 |
|
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C | o Handle sum for integer data. |
| 207 |
|
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C *==========================================================* |
| 208 |
|
|
C | Perform sum an array of one value per thread and then |
| 209 |
|
|
C | sum result of all the processes. |
| 210 |
|
|
C | Notes |
| 211 |
|
|
C | ===== |
| 212 |
|
|
C | Within a process only one thread does the sum, each |
| 213 |
|
|
C | thread is assumed to have already summed its local data. |
| 214 |
|
|
C | The same thread also does the inter-process sum for |
| 215 |
|
|
C | example with MPI and then writes the result into a shared |
| 216 |
|
|
C | location. All threads wait until the sum is avaiailable. |
| 217 |
|
|
C *==========================================================* |
| 218 |
heimbach |
1.7 |
|
| 219 |
cnh |
1.10 |
C !USES: |
| 220 |
heimbach |
1.7 |
C === Global data === |
| 221 |
|
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#include "SIZE.h" |
| 222 |
|
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#include "EEPARAMS.h" |
| 223 |
|
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#include "EESUPPORT.h" |
| 224 |
adcroft |
1.9 |
#include "GLOBAL_SUM.h" |
| 225 |
heimbach |
1.7 |
|
| 226 |
cnh |
1.10 |
C !INPUT/OUTPUT PARAMETERS: |
| 227 |
heimbach |
1.7 |
C === Routine arguments === |
| 228 |
|
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C sumPhi - Result of sum. |
| 229 |
|
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C myThid - My thread id. |
| 230 |
|
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INTEGER sumPhi |
| 231 |
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INTEGER myThid |
| 232 |
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|
| 233 |
cnh |
1.10 |
C !LOCAL VARIABLES: |
| 234 |
heimbach |
1.7 |
C === Local variables === |
| 235 |
|
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C I - Loop counters |
| 236 |
|
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C mpiRC - MPI return code |
| 237 |
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INTEGER I |
| 238 |
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INTEGER tmp |
| 239 |
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#ifdef ALLOW_USE_MPI |
| 240 |
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INTEGER mpiRC |
| 241 |
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#endif /* ALLOW_USE_MPI */ |
| 242 |
cnh |
1.10 |
CEOP |
| 243 |
heimbach |
1.7 |
|
| 244 |
adcroft |
1.9 |
_BARRIER |
| 245 |
heimbach |
1.7 |
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 |
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tmp = 0. _d 0 |
| 254 |
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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 |
adcroft |
1.9 |
phiGSI(1,1) = 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 |
adcroft |
1.9 |
sumPhi = phiGSI(1,1) |
| 277 |
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_BARRIER |
| 278 |
adcroft |
1.6 |
|
| 279 |
cnh |
1.1 |
RETURN |
| 280 |
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END |
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