| 1 |
adcroft |
1.1 |
C $Header: /u/gcmpack/models/MITgcmUV/eesupp/src/exch_send_put_x.F,v 1.2 1999/03/22 17:37:43 adcroft Exp $ |
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#include "CPP_OPTIONS.h" |
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#ifdef ALLOW_FLT |
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#include "CPP_EEOPTIONS.h" |
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| 6 |
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SUBROUTINE EXCH_RL_SEND_PUT_VEC_X( arrayE, arrayW, |
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I myd1, myThid ) |
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C /==========================================================\ |
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C | SUBROUTINE EXCH_RL_SEND_PUT_X | |
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C | o "Send" or "put" X edges for RL array. | |
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C |==========================================================| |
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C | Routine that invokes actual message passing send or | |
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C | direct "put" of data to update X faces of an XY[R] array.| |
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C \==========================================================/ |
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IMPLICIT NONE |
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C == Global variables == |
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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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#include "FLT.h" |
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#include "EXCH.h" |
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C == Routine arguments == |
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C arrayE - Array to be exchanged. |
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C arrayW |
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C myd1 - sizes. |
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C myd2 |
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C myThid - Thread number of this instance of S/R EXCH... |
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INTEGER myd1 |
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INTEGER myd2 |
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_RL arrayE(myd1, nSx, nSy), arrayW(myd1, nSx, nSy) |
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INTEGER theSimulationMode |
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INTEGER myThid |
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CEndOfInterface |
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C == Local variables == |
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C I, J - Loop counters and extents |
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C bi, bj |
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C biW, bjW - West tile indices |
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C biE, bjE - East tile indices |
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C theProc, theTag, theType, - Variables used in message building |
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C theSize |
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C westCommMode - Working variables holding type |
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C eastCommMode of communication a particular |
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C tile face uses. |
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INTEGER I, J |
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INTEGER bi, bj, biW, bjW, biE, bjE |
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INTEGER westCommMode |
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INTEGER eastCommMode |
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#ifdef ALLOW_USE_MPI |
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INTEGER theProc, theTag, theType, theSize, mpiRc |
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#endif |
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C-- Write data to exchange buffer |
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C Various actions are possible depending on the communication mode |
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C as follows: |
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C Mode Action |
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C -------- --------------------------- |
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C COMM_NONE Do nothing |
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C |
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C COMM_MSG Message passing communication ( e.g. MPI ) |
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C Fill west send buffer from this tile. |
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C Send data with tag identifying tile and direction. |
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C Fill east send buffer from this tile. |
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C Send data with tag identifying tile and direction. |
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C |
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C COMM_PUT "Put" communication ( UMP_, shmemput, etc... ) |
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C Fill east receive buffer of west-neighbor tile |
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C Fill west receive buffer of east-neighbor tile |
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C Sync. memory |
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C Write data-ready Ack for east edge of west-neighbor |
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C tile |
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C Write data-ready Ack for west edge of east-neighbor |
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C tile |
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C Sync. memory |
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C |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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westCommMode = _tileCommModeW(bi,bj) |
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eastCommMode = _tileCommModeE(bi,bj) |
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biE = _tileBiE(bi,bj) |
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bjE = _tileBjE(bi,bj) |
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biW = _tileBiW(bi,bj) |
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bjW = _tileBjW(bi,bj) |
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C o Send or Put west edge |
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IF ( westCommMode .EQ. COMM_MSG ) THEN |
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C Send the data |
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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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theProc = tilePidW(bi,bj) |
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theTag = _tileTagSendW(bi,bj) |
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theSize = myd1 |
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theType = MPI_DOUBLE_PRECISION |
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c exchVReqsX(1,bi,bj) = exchVReqsX(1,bi,bj)+1 |
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exchNReqsX(1,bi,bj) = exchNReqsX(1,bi,bj)+1 |
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CALL MPI_Isend(arrayW(1,bi,bj), theSize, theType, |
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& theProc, theTag, MPI_COMM_MODEL, |
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& exchReqIdX(exchNReqsX(1,bi,bj),1,bi,bj), mpiRc) |
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c & exchReqVIdX(exchVReqsX(1,bi,bj),1,bi,bj), mpiRc) |
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#ifndef ALWAYS_USE_MPI |
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ENDIF |
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#endif |
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#endif /* ALLOW_USE_MPI */ |
| 108 |
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eastRecvAck(1,biW,bjW) = 1. |
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ELSEIF ( westCommMode .EQ. COMM_PUT ) THEN |
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DO I=1,myd1 |
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arrayE(I,biW,bjW) = arrayW(I,bi,bj) |
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ENDDO |
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ELSEIF ( westCommMode .NE. COMM_NONE |
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& .AND. westCommMode .NE. COMM_GET ) THEN |
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STOP ' S/R EXCH: Invalid commW mode.' |
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ENDIF |
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C o Send or Put east edge |
| 119 |
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IF ( eastCommMode .EQ. COMM_MSG ) THEN |
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C Send the data |
| 121 |
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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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theProc = tilePidE(bi,bj) |
| 126 |
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theTag = _tileTagSendE(bi,bj) |
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theSize = myd1 |
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theType = MPI_DOUBLE_PRECISION |
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c exchVReqsX(1,bi,bj) = exchVReqsX(1,bi,bj)+1 |
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exchNReqsX(1,bi,bj) = exchNReqsX(1,bi,bj)+1 |
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c if (theProc .eq. 2 .or. theProc .eq. 4) then |
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c if (arrayE(1,bi,bj) .ne. 0.) then |
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c write(errormessageunit,*) 'qq1y: ',myprocid, |
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c & theProc,theTag,theSize,(arrayE(i,bi,bj),i=1,32) |
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c endif |
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c endif |
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CALL MPI_Isend(arrayE(1,bi,bj), theSize, theType, |
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& theProc, theTag, MPI_COMM_MODEL, |
| 139 |
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& exchReqIdX(exchNReqsX(1,bi,bj),1,bi,bj), mpiRc) |
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c & exchReqVIdX(exchVReqsX(1,bi,bj),1,bi,bj), mpiRc) |
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#ifndef ALWAYS_USE_MPI |
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ENDIF |
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#endif |
| 144 |
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#endif /* ALLOW_USE_MPI */ |
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westRecvAck(1,biE,bjE) = 1. |
| 146 |
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ELSEIF ( eastCommMode .EQ. COMM_PUT ) THEN |
| 147 |
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DO I=1,myd1 |
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arrayW(I,biE,bjE) = arrayE(I,bi,bj) |
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ENDDO |
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ELSEIF ( eastCommMode .NE. COMM_NONE |
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& .AND. eastCommMode .NE. COMM_GET ) THEN |
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STOP ' S/R EXCH: Invalid commE mode.' |
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ENDIF |
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ENDDO |
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ENDDO |
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C-- Signal completetion ( making sure system-wide memory state is |
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C-- consistent ). |
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C ** NOTE ** We are relying on being able to produce strong-ordered |
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C memory semantics here. In other words we assume that there is a |
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C mechanism which can ensure that by the time the Ack is seen the |
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C overlap region data that will be exchanged is up to date. |
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IF ( exchNeedsMemSync ) CALL MEMSYNC |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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biE = _tileBiE(bi,bj) |
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bjE = _tileBjE(bi,bj) |
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biW = _tileBiW(bi,bj) |
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bjW = _tileBjW(bi,bj) |
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westCommMode = _tileCommModeW(bi,bj) |
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eastCommMode = _tileCommModeE(bi,bj) |
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IF ( westCommMode .EQ. COMM_PUT ) eastRecvAck(1,biW,bjW) = 1. |
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IF ( eastCommMode .EQ. COMM_PUT ) westRecvAck(1,biE,bjE) = 1. |
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IF ( westCommMode .EQ. COMM_GET ) eastRecvAck(1,biW,bjW) = 1. |
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IF ( eastCommMode .EQ. COMM_GET ) westRecvAck(1,biE,bjE) = 1. |
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ENDDO |
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ENDDO |
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C-- Make sure "ack" setting is seen system-wide. |
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C Here strong-ordering is not an issue but we want to make |
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C sure that processes that might spin on the above Ack settings |
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C will see the setting. |
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C ** NOTE ** On some machines we wont spin on the Ack setting |
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C ( particularly the T90 ), instead we will use s system barrier. |
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C On the T90 the system barrier is very fast and switches out the |
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C thread while it waits. On most machines the system barrier |
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C is much too slow and if we own the machine and have one thread |
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C per process preemption is not a problem. |
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IF ( exchNeedsMemSync ) CALL MEMSYNC |
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RETURN |
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END |
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SUBROUTINE EXCH_RL_SEND_PUT_VEC_Y( arrayN, arrayS, |
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I myd1, myThid ) |
| 199 |
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C /==========================================================\ |
| 200 |
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C | SUBROUTINE EXCH_RL_SEND_PUT_Y | |
| 201 |
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C | o "Send" or "put" Y edges for RL array. | |
| 202 |
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C |==========================================================| |
| 203 |
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C | Routine that invokes actual message passing send or | |
| 204 |
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C | direct "put" of data to update X faces of an XY[R] array.| |
| 205 |
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C \==========================================================/ |
| 206 |
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IMPLICIT NONE |
| 207 |
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| 208 |
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C == Global variables == |
| 209 |
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#include "SIZE.h" |
| 210 |
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#include "EEPARAMS.h" |
| 211 |
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#include "EESUPPORT.h" |
| 212 |
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#include "FLT.h" |
| 213 |
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#include "EXCH.h" |
| 214 |
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C == Routine arguments == |
| 215 |
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C arrayN - Array to be exchanged. |
| 216 |
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C arrayS |
| 217 |
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C myd1 - sizes. |
| 218 |
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C myd2 |
| 219 |
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C myThid - Thread number of this instance of S/R EXCH... |
| 220 |
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INTEGER myd1 |
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INTEGER myd2 |
| 222 |
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_RL arrayN(myd1, nSx, nSy), arrayS(myd1, nSx, nSy) |
| 223 |
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INTEGER myThid |
| 224 |
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CEndOfInterface |
| 225 |
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| 226 |
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C == Local variables == |
| 227 |
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C I, J - Loop counters and extents |
| 228 |
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C bi, bj |
| 229 |
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C biN, bjN - North tile indices |
| 230 |
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C biS, bjS - South tile indices |
| 231 |
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C theProc, theTag, theType, - Variables used in message building |
| 232 |
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C theSize |
| 233 |
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C westCommMode - Working variables holding type |
| 234 |
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C eastCommMode of communication a particular |
| 235 |
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C tile face uses. |
| 236 |
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INTEGER I, J |
| 237 |
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INTEGER bi, bj, biS, bjS, biN, bjN |
| 238 |
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INTEGER southCommMode |
| 239 |
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INTEGER northCommMode |
| 240 |
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| 241 |
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#ifdef ALLOW_USE_MPI |
| 242 |
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INTEGER theProc, theTag, theType, theSize, mpiRc |
| 243 |
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#endif |
| 244 |
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C-- Write data to exchange buffer |
| 245 |
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C Various actions are possible depending on the communication mode |
| 246 |
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C as follows: |
| 247 |
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C Mode Action |
| 248 |
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C -------- --------------------------- |
| 249 |
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C COMM_NONE Do nothing |
| 250 |
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C |
| 251 |
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C COMM_MSG Message passing communication ( e.g. MPI ) |
| 252 |
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C Fill west send buffer from this tile. |
| 253 |
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C Send data with tag identifying tile and direction. |
| 254 |
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C Fill east send buffer from this tile. |
| 255 |
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C Send data with tag identifying tile and direction. |
| 256 |
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C |
| 257 |
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C COMM_PUT "Put" communication ( UMP_, shmemput, etc... ) |
| 258 |
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C Fill east receive buffer of south-neighbor tile |
| 259 |
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C Fill west receive buffer of north-neighbor tile |
| 260 |
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C Sync. memory |
| 261 |
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C Write data-ready Ack for east edge of south-neighbor |
| 262 |
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C tile |
| 263 |
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C Write data-ready Ack for west edge of north-neighbor |
| 264 |
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C tile |
| 265 |
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C Sync. memory |
| 266 |
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C |
| 267 |
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DO bj=myByLo(myThid),myByHi(myThid) |
| 268 |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
| 269 |
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| 270 |
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southCommMode = _tileCommModeS(bi,bj) |
| 271 |
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northCommMode = _tileCommModeN(bi,bj) |
| 272 |
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biN = _tileBiN(bi,bj) |
| 273 |
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bjN = _tileBjN(bi,bj) |
| 274 |
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biS = _tileBiS(bi,bj) |
| 275 |
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bjS = _tileBjS(bi,bj) |
| 276 |
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| 277 |
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C o Send or Put south edge |
| 278 |
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IF ( southCommMode .EQ. COMM_MSG ) THEN |
| 279 |
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C Send the data |
| 280 |
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#ifdef ALLOW_USE_MPI |
| 281 |
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#ifndef ALWAYS_USE_MPI |
| 282 |
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IF ( usingMPI ) THEN |
| 283 |
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#endif |
| 284 |
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theProc = tilePidS(bi,bj) |
| 285 |
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theTag = _tileTagSendS(bi,bj) |
| 286 |
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theSize = myd1 |
| 287 |
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theType = MPI_DOUBLE_PRECISION |
| 288 |
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c exchVReqsY(1,bi,bj) = exchVReqsY(1,bi,bj)+1 |
| 289 |
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exchNReqsY(1,bi,bj) = exchNReqsY(1,bi,bj)+1 |
| 290 |
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CALL MPI_Isend(arrayS(1,bi,bj), theSize, theType, |
| 291 |
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& theProc, theTag, MPI_COMM_MODEL, |
| 292 |
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& exchReqIdY(exchNReqsY(1,bi,bj),1,bi,bj), mpiRc) |
| 293 |
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c & exchReqVIdY(exchVReqsY(1,bi,bj),1,bi,bj), mpiRc) |
| 294 |
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#ifndef ALWAYS_USE_MPI |
| 295 |
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ENDIF |
| 296 |
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#endif |
| 297 |
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#endif /* ALLOW_USE_MPI */ |
| 298 |
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northRecvAck(1,biS,bjS) = 1. |
| 299 |
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ELSEIF ( southCommMode .EQ. COMM_PUT ) THEN |
| 300 |
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DO I=1,myd1 |
| 301 |
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arrayN(I,biS,bjS) = arrayS(I,bi,bj) |
| 302 |
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ENDDO |
| 303 |
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ELSEIF ( southCommMode .NE. COMM_NONE |
| 304 |
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& .AND. southCommMode .NE. COMM_GET ) THEN |
| 305 |
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STOP ' S/R EXCH: Invalid commS mode.' |
| 306 |
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ENDIF |
| 307 |
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| 308 |
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C o Send or Put north edge |
| 309 |
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IF ( northCommMode .EQ. COMM_MSG ) THEN |
| 310 |
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C Send the data |
| 311 |
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#ifdef ALLOW_USE_MPI |
| 312 |
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#ifndef ALWAYS_USE_MPI |
| 313 |
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IF ( usingMPI ) THEN |
| 314 |
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#endif |
| 315 |
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theProc = tilePidN(bi,bj) |
| 316 |
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theTag = _tileTagSendN(bi,bj) |
| 317 |
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theSize = myd1 |
| 318 |
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theType = MPI_DOUBLE_PRECISION |
| 319 |
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c exchVReqsY(1,bi,bj) = exchVReqsY(1,bi,bj)+1 |
| 320 |
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exchNReqsY(1,bi,bj) = exchNReqsY(1,bi,bj)+1 |
| 321 |
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CALL MPI_Isend(arrayN(1,bi,bj), theSize, theType, |
| 322 |
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& theProc, theTag, MPI_COMM_MODEL, |
| 323 |
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& exchReqIdY(exchNReqsY(1,bi,bj),1,bi,bj), mpiRc) |
| 324 |
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c & exchReqVIdY(exchVReqsY(1,bi,bj),1,bi,bj), mpiRc) |
| 325 |
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#ifndef ALWAYS_USE_MPI |
| 326 |
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ENDIF |
| 327 |
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#endif |
| 328 |
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#endif /* ALLOW_USE_MPI */ |
| 329 |
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southRecvAck(1,biN,bjN) = 1. |
| 330 |
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ELSEIF ( northCommMode .EQ. COMM_PUT ) THEN |
| 331 |
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DO I=1,myd1 |
| 332 |
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arrayS(I,biN,bjN) = arrayN(I,bi,bj) |
| 333 |
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ENDDO |
| 334 |
|
|
ELSEIF ( northCommMode .NE. COMM_NONE |
| 335 |
|
|
& .AND. northCommMode .NE. COMM_GET ) THEN |
| 336 |
|
|
STOP ' S/R EXCH: Invalid commN mode.' |
| 337 |
|
|
ENDIF |
| 338 |
|
|
|
| 339 |
|
|
ENDDO |
| 340 |
|
|
ENDDO |
| 341 |
|
|
|
| 342 |
|
|
C-- Signal completetion ( making sure system-wide memory state is |
| 343 |
|
|
C-- consistent ). |
| 344 |
|
|
|
| 345 |
|
|
C ** NOTE ** We are relying on being able to produce strong-ordered |
| 346 |
|
|
C memory semantics here. In other words we assume that there is a |
| 347 |
|
|
C mechanism which can ensure that by the time the Ack is seen the |
| 348 |
|
|
C overlap region data that will be exchanged is up to date. |
| 349 |
|
|
IF ( exchNeedsMemSync ) CALL MEMSYNC |
| 350 |
|
|
|
| 351 |
|
|
DO bj=myByLo(myThid),myByHi(myThid) |
| 352 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 353 |
|
|
biN = _tileBiN(bi,bj) |
| 354 |
|
|
bjN = _tileBjN(bi,bj) |
| 355 |
|
|
biS = _tileBiS(bi,bj) |
| 356 |
|
|
bjS = _tileBjS(bi,bj) |
| 357 |
|
|
southCommMode = _tileCommModeE(bi,bj) |
| 358 |
|
|
northCommMode = _tileCommModeN(bi,bj) |
| 359 |
|
|
IF ( southCommMode .EQ. COMM_PUT ) northRecvAck(1,biS,bjS) = 1. |
| 360 |
|
|
IF ( northCommMode .EQ. COMM_PUT ) southRecvAck(1,biN,bjN) = 1. |
| 361 |
|
|
IF ( southCommMode .EQ. COMM_GET ) northRecvAck(1,biS,bjS) = 1. |
| 362 |
|
|
IF ( northCommMode .EQ. COMM_GET ) southRecvAck(1,biN,bjN) = 1. |
| 363 |
|
|
ENDDO |
| 364 |
|
|
ENDDO |
| 365 |
|
|
|
| 366 |
|
|
C-- Make sure "ack" setting is seen system-wide. |
| 367 |
|
|
C Here strong-ordering is not an issue but we want to make |
| 368 |
|
|
C sure that processes that might spin on the above Ack settings |
| 369 |
|
|
C will see the setting. |
| 370 |
|
|
C ** NOTE ** On some machines we wont spin on the Ack setting |
| 371 |
|
|
C ( particularly the T90 ), instead we will use s system barrier. |
| 372 |
|
|
C On the T90 the system barrier is very fast and switches out the |
| 373 |
|
|
C thread while it waits. On most machines the system barrier |
| 374 |
|
|
C is much too slow and if we own the machine and have one thread |
| 375 |
|
|
C per process preemption is not a problem. |
| 376 |
|
|
IF ( exchNeedsMemSync ) CALL MEMSYNC |
| 377 |
|
|
|
| 378 |
|
|
RETURN |
| 379 |
|
|
END |
| 380 |
|
|
|
| 381 |
|
|
#else |
| 382 |
|
|
SUBROUTINE EXCH_RL_SEND_PUT_VEC_X( myThid ) |
| 383 |
|
|
INTEGER myThid |
| 384 |
|
|
return |
| 385 |
|
|
end |
| 386 |
|
|
SUBROUTINE EXCH_RL_SEND_PUT_VEC_Y( myThid ) |
| 387 |
|
|
INTEGER myThid |
| 388 |
|
|
return |
| 389 |
|
|
end |
| 390 |
|
|
#endif |
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