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C $Header: /home/ubuntu/mnt/e9_copy/MITgcm/eesupp/src/ini_threading_environment.F,v 1.3 1998/04/23 20:56:54 cnh Exp $ |
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|
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#include "CPP_EEOPTIONS.h" |
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|
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CStartOfInterface |
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SUBROUTINE INI_THREADING_ENVIRONMENT |
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C /==========================================================\ |
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C | SUBROUTINE INI_THREADING_ENVIRONMENT | |
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C | o Initialise multi-threaded environment. | |
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C |==========================================================| |
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C | Generally we do not start separate threads here but | |
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C | just initialise data structures indicating which of the | |
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C | nSx x nSy blocks a thread is responsible for. | |
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C | The multiple threads are spawned in the top level MAIN | |
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C | routine. | |
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C \==========================================================/ |
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|
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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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CEndOfInterface |
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|
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C == Local variables == |
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C bXPerThread - Blocks of size sNx per thread. |
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C byPerThread - Blocks of size sNy per thread. |
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C Thid - Thread index. Temporary used in loops |
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C which set per. thread values on a |
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C cartesian grid. |
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C bxLo, bxHi - Work vars. for thread index |
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C byLo, byHi range. bxLo is the lowest i index |
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C that a thread covers, bxHi is the |
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C highest i index. byLo is the lowest |
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C j index, byHi is the highest j index. |
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C I, J - Loop counter |
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C msgBuf - I/O buffer for reporting status information. |
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C myThid - Dummy thread id for use in printed messages |
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C ( this routine "INI_THREADING_ENVIRONMENT" is called before |
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C multi-threading has started.) |
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C threadWest - Temporaries used in calculating neighbor threads. |
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C threadEast |
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C threadSouth |
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C threadNorth |
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INTEGER bxPerThread |
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INTEGER byPerThread |
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INTEGER Thid |
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INTEGER bxLo, bxHi |
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INTEGER byLo, byHi |
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INTEGER I, J |
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CHARACTER*(MAX_LEN_MBUF) msgBuf |
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INTEGER myThid |
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INTEGER threadWest |
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INTEGER threadEast |
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INTEGER threadSouth |
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INTEGER threadNorth |
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INTEGER threadNW |
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INTEGER threadNE |
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INTEGER threadSW |
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INTEGER threadSE |
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|
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#ifdef ALLOW_USE_MPI |
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C elCount - Length in elements of an MPI datatype |
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C elStride - Stride between elements of an MPI datatype. |
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C elLen - Length of each element of the datatype |
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C arrElSize - Size in bytes of an array element |
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C arrElSep - Separation in array elements between consecutive |
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C start locations for an MPI datatype. |
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C mpiRC - MPI return code |
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INTEGER elCount |
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INTEGER elStride |
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INTEGER elLen |
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INTEGER arrElSize |
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INTEGER arrElSep |
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INTEGER mpiRC |
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#endif /* ALLOW_USE_MPI */ |
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|
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C-- Set default for all threads of having no blocks to |
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C-- work on - except for thread 1. |
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myBxLo(1) = 1 |
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myBxHi(1) = nSx |
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myByLo(1) = 1 |
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myByHi(1) = nSy |
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DO I = 2, MAX_NO_THREADS |
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myBxLo(I) = 0 |
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myBxHi(I) = 1 |
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myByLo(I) = 0 |
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myByHi(I) = 1 |
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ENDDO |
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myThid = 1 |
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|
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C-- If there are multiple threads allocate different range of the |
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C-- nSx*nSy blocks to each thread. |
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C For now handle simple case of no. blocks nSx = n*nTx and |
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C no. blocks nSy = m*nTy ( where m and n are integer ). This |
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C is handled by simply mapping threads to blocks in sequence |
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C with the x thread index moving fastest. |
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C Later code which sets the thread number of neighboring blocks |
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C needs to be consisten with the code here. |
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nThreads = nTx * nTy |
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|
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C-- Initialise the barrier mechanism |
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CALL BARRIER_INIT |
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|
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IF ( nThreads .NE. nTx*nTy ) THEN |
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WRITE(msgBuf,'(A,A,A,I,A,I)') |
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& 'S/R INI_THREADING_ENVIRONMENT:', |
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& ' Total number of threads is not the same as nTx*nTy.', |
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& ' nTx * nTy = ',nTx*nTy,' nThreads = ',nThreads |
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CALL PRINT_ERROR(msgBuf, myThid) |
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eeBootError = .TRUE. |
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STOP 'ABNORMAL END: S/R INI_THREADING_ENVIRONMENT' |
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ENDIF |
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bxPerThread = nSx/nTx |
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IF ( bxPerThread*nTx .NE. nSx ) THEN |
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WRITE(msgBuf,'(A,A)') |
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& 'S/R INI_THREADING_ENVIRONMENT:', |
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& ' Number of blocks in X (nSx) must be exact multiple of threads in X (nTx).' |
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CALL PRINT_ERROR(msgBuf, myThid) |
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eeBootError = .TRUE. |
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STOP 'ABNORMAL END: S/R INI_THREADING_ENVIRONMENT' |
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ENDIF |
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byPerThread = nSy/nTy |
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IF ( byPerThread*nTy .NE. nSy ) THEN |
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WRITE(msgBuf,'(A,A)') |
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& 'S/R INI_THREADING_ENVIRONMENT:', |
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& ' Number of blocks in Y (nSy) must be exact multiple of threads in Y (nTy).' |
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CALL PRINT_ERROR(msgBuf, myThid) |
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eeBootError = .TRUE. |
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STOP 'ABNORMAL END: S/R INI_THREADING_ENVIRONMENT' |
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ENDIF |
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IF ( .NOT. eeBootError ) THEN |
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byLo = 1 |
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DO J=1,nTy |
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byHi = byLo+byPerThread-1 |
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bxLo = 1 |
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DO I=1,nTx |
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Thid = (J-1)*nTx+I |
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bxHi = bxLo+bxPerThread-1 |
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myBxLo(Thid) = bxLo |
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myBxHi(Thid) = bxHi |
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myByLo(Thid) = byLo |
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myByHi(Thid) = byHi |
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bxLo = bxHi+1 |
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ENDDO |
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byLo = byHi+1 |
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ENDDO |
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ENDIF |
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|
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C-- Set flags saying how each thread is communicating |
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C Notes: |
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C ====== |
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C By default each block communicates with its neighbor using |
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C direct reads and writes from the neighbors overlap regions. |
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C This rule will always applie for the blocks in the interior |
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C of a processes domain, but for the "outside" faces of blocks on |
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C the edges of the processes domain i.e. where bx=1 or nSx or |
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C where by = 1 or nSy. In this section each thread checks to see |
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C whether any of the blocks it is responsible for are "outside" |
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C blocks and if so what communication strategy should be used. |
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C to |
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DO I=1, nThreads |
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|
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C 1. Check for block which is on the west edge. |
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commW(I) = COMM_SHARED |
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IF ( notUsingXPeriodicity .AND. |
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& myBxLo(I) .EQ. 1 .AND. |
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& myPx .EQ. 1 ) THEN |
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commW(I) = COMM_NONE |
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ELSEIF ( myBxLo(I) .EQ. 1 ) THEN |
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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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IF ( mpiPidW .NE. MPI_PROC_NULL ) THEN |
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commW(I) = COMM_MPI |
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allMyEdgesAreSharedMemory(I) = .FALSE. |
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ENDIF |
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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 */ |
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ENDIF |
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|
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C 2. Check for block which is on the east edge. |
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commE(I) = COMM_SHARED |
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IF ( notUsingXPeriodicity .AND. |
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& myBxHi(I) .EQ. nSx .AND. |
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& myPx .EQ. nPx ) THEN |
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commE(I) = COMM_NONE |
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ELSEIF ( myBxHi(I) .EQ. nSx ) THEN |
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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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IF ( mpiPidE .NE. MPI_PROC_NULL ) THEN |
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commE(I) = COMM_MPI |
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allMyEdgesAreSharedMemory(I) = .FALSE. |
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ENDIF |
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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 */ |
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ENDIF |
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|
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C 3. Check for block which is southern edge |
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commS(I) = COMM_SHARED |
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IF ( notUsingYPeriodicity .AND. |
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& myByLo(I) .EQ. 1 .AND. |
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& myPy .EQ. 1 ) THEN |
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commS(I) = COMM_NONE |
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ELSEIF ( myByLo(I) .EQ. 1 ) THEN |
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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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IF ( mpiPidS .NE. MPI_PROC_NULL ) THEN |
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commS(I) = COMM_MPI |
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allMyEdgesAreSharedMemory(I) = .FALSE. |
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ENDIF |
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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 */ |
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ENDIF |
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|
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C 4. Check for block which is on northern edge |
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commN(I) = COMM_SHARED |
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IF ( notUsingYPeriodicity .AND. |
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& myByHi(I) .EQ. nSy .AND. |
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& myPy .EQ. nPy ) THEN |
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commN(I) = COMM_NONE |
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ELSEIF ( myByHi(I) .EQ. nSy ) THEN |
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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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IF ( mpiPidN .NE. MPI_PROC_NULL ) THEN |
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commN(I) = COMM_MPI |
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allMyEdgesAreSharedMemory(I) = .FALSE. |
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ENDIF |
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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 */ |
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ENDIF |
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ENDDO |
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|
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C-- Print mapping of threads to grid points. |
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WRITE(msgBuf,'(A)') '// ======================================================' |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT , 1) |
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|
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WRITE(msgBuf,'(A)') '// Mapping of tiles to threads' |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT , 1) |
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|
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WRITE(msgBuf,'(A)') '// ======================================================' |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT , 1) |
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|
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DO I=1,nThreads |
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WRITE(msgBuf,'(A,I4,A,4(I4,A1))') |
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& '// -o- Thread',I,', tiles (', |
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& myBxLo(I),':',myBxHi(I),',',myByLo(I),':',myByHi(I),')' |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, SQUEEZE_BOTH , 1) |
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IF ( myBxLo(I) .NE. 1 .OR. |
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& commW(I) .EQ. COMM_SHARED ) THEN |
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WRITE(msgBuf,'(A,A)') '//',' shared memory to west.' |
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ELSEIF ( commW(I) .NE. COMM_NONE ) THEN |
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WRITE(msgBuf,'(A,A)') '//',' messages to west.' |
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ELSE |
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WRITE(msgBuf,'(A,A)') '//',' no communication to west.' |
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ENDIF |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, SQUEEZE_RIGHT , 1) |
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IF ( myBxHi(I) .NE. nSx .OR. |
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& commE(I) .EQ. COMM_SHARED ) THEN |
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WRITE(msgBuf,'(A,A)') '//',' shared memory to east.' |
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ELSEIF ( commE(I) .NE. COMM_NONE ) THEN |
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WRITE(msgBuf,'(A,A)') '//',' messages to east.' |
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ELSE |
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WRITE(msgBuf,'(A,A)') '//',' no communication to east.' |
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ENDIF |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, SQUEEZE_RIGHT , 1) |
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IF ( myByLo(I) .NE. 1 .OR. |
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& commS(I) .EQ. COMM_SHARED ) THEN |
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WRITE(msgBuf,'(A,A)') '//',' shared memory to south.' |
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ELSEIF ( commS(I) .NE. COMM_NONE ) THEN |
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WRITE(msgBuf,'(A,A)') '//',' messages to south.' |
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ELSE |
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WRITE(msgBuf,'(A,A)') '//',' no communication to south.' |
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ENDIF |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, SQUEEZE_RIGHT , 1) |
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IF ( myByHi(I) .NE. nSy .OR. |
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& commN(I) .EQ. COMM_SHARED ) THEN |
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WRITE(msgBuf,'(A,A)') '//',' shared memory to north.' |
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ELSEIF ( commN(I) .NE. COMM_NONE ) THEN |
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WRITE(msgBuf,'(A,A)') '//',' messages to north.' |
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ELSE |
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WRITE(msgBuf,'(A,A)') '//',' no communication to north.' |
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ENDIF |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, SQUEEZE_RIGHT , 1) |
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ENDDO |
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WRITE(msgBuf,'(A)') ' ' |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, SQUEEZE_RIGHT , 1) |
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|
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#ifdef ALLOW_USE_MPI |
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C-- Create MPI datatypes for communicating thread boundaries if needed |
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C For every thread we define 8 MPI datatypes for use |
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C in indicating regions of data to transfer as follows: |
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C o mpiTypeXFaceThread_xy_r4 |
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C Handles east-west transfer for XY arrays of REAL*4 |
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C o mpiTypeXFaceThread_xy_r8 |
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C Handles east-west transfer for XY arrays of REAL*8 |
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C o mpiTypeYFaceThread_xy_r4 |
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C Handles north-south transfer for XY arrays of REAL*4 |
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C o mpiTypeYFaceThread_xy_r8 |
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C Handles north-south transfer for XY arrays of REAL*8 |
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C o mpiTypeXFaceThread_xyz_r4 |
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C Handles east-west transfer for XYZ arrays of REAL*4 |
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C o mpiTypeXFaceThread_xyz_r8 |
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C Handles east-west transfer for XYZ arrays of REAL*8 |
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C o mpiTypeYFaceThread_xyz_r4 |
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C Handles north-south transfer for XYZ arrays of REAL*4 |
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C o mpiTypeYFaceThread_xyz_r8 |
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C Handles north-south transfer for XYZarrays of REAL*8 |
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#ifndef ALWAYS_USE_MPI |
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IF ( usingMPI ) THEN |
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#endif |
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DO I =1, nThreads |
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|
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C x-face exchanges for xy real*4 data |
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elCount = myByHi(I)-myByLo(I)+1 |
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elLen = 1 |
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arrElSep = (sNx+OLx*2)*(sNy+OLy*2)*nSx |
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arrElSize = 4 |
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elStride = arrElSep*arrElSize |
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CALL MPI_TYPE_HVECTOR(elCount,elLen,elStride,mpiTypeXFaceBlock_xy_r4, |
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O mpiTypeXFaceThread_xy_r4(I), mpiRC ) |
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IF ( mpiRC .NE. MPI_SUCCESS ) THEN |
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eeBootError = .TRUE. |
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WRITE(msgBuf,'(A,I)') |
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& 'S/R INI_THREADS: MPI_TYPE_HVECTOR (mpiTypeXFaceThread_xy_r4)', |
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& mpiRC |
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CALL PRINT_ERROR( msgBuf , myThid) |
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ENDIF |
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CALL MPI_TYPE_COMMIT(mpiTypeXFaceThread_xy_r4(I),mpiRC) |
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IF ( mpiRC .NE. MPI_SUCCESS ) THEN |
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eeBootError = .TRUE. |
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WRITE(msgBuf,'(A,I)') |
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& 'S/R INI_THREADS: MPI_TYPE_COMMIT (mpiTypeXFaceThread_xy_r4)', |
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& mpiRC |
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CALL PRINT_ERROR( msgBuf , myThid) |
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ENDIF |
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|
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C x-face exchanges for xy real*8 data |
| 356 |
arrElSize = 8 |
| 357 |
elStride = arrElSep*arrElSize |
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CALL MPI_TYPE_HVECTOR(elCount,elLen,elStride,mpiTypeXFaceBlock_xy_r8, |
| 359 |
O mpiTypeXFaceThread_xy_r8(I), mpiRC ) |
| 360 |
IF ( mpiRC .NE. MPI_SUCCESS ) THEN |
| 361 |
eeBootError = .TRUE. |
| 362 |
WRITE(msgBuf,'(A,I)') |
| 363 |
& 'S/R INI_THREADS: MPI_TYPE_HVECTOR (mpiTypeXFaceThread_xy_r8)', |
| 364 |
& mpiRC |
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CALL PRINT_ERROR( msgBuf , myThid) |
| 366 |
ENDIF |
| 367 |
CALL MPI_TYPE_COMMIT(mpiTypeXFaceThread_xy_r8(I),mpiRC) |
| 368 |
IF ( mpiRC .NE. MPI_SUCCESS ) THEN |
| 369 |
eeBootError = .TRUE. |
| 370 |
WRITE(msgBuf,'(A,I)') |
| 371 |
& 'S/R INI_THREADS: MPI_TYPE_COMMIT (mpiTypeXFaceThread_xy_r8)', |
| 372 |
& mpiRC |
| 373 |
CALL PRINT_ERROR( msgBuf , myThid) |
| 374 |
ENDIF |
| 375 |
|
| 376 |
C x-face exchanges for xyz real*4 data |
| 377 |
elCount = myByHi(I)-myByLo(I)+1 |
| 378 |
elLen = 1 |
| 379 |
arrElSep = (sNx+OLx*2)*(sNy+OLy*2)*Nz*nSx |
| 380 |
arrElSize = 4 |
| 381 |
elStride = arrElSep*arrElSize |
| 382 |
CALL MPI_TYPE_HVECTOR(elCount,elLen,elStride,mpiTypeXFaceBlock_xyz_r4, |
| 383 |
O mpiTypeXFaceThread_xyz_r4(I), mpiRC ) |
| 384 |
IF ( mpiRC .NE. MPI_SUCCESS ) THEN |
| 385 |
eeBootError = .TRUE. |
| 386 |
WRITE(msgBuf,'(A,I)') |
| 387 |
& 'S/R INI_THREADS: MPI_TYPE_HVECTOR (mpiTypeXFaceThread_xyz_r4)', |
| 388 |
& mpiRC |
| 389 |
CALL PRINT_ERROR( msgBuf , myThid) |
| 390 |
ENDIF |
| 391 |
CALL MPI_TYPE_COMMIT(mpiTypeXFaceThread_xyz_r4(I),mpiRC) |
| 392 |
IF ( mpiRC .NE. MPI_SUCCESS ) THEN |
| 393 |
eeBootError = .TRUE. |
| 394 |
WRITE(msgBuf,'(A,I)') |
| 395 |
& 'S/R INI_THREADS: MPI_TYPE_COMMIT (mpiTypeXFaceThread_xyz_r4)', |
| 396 |
& mpiRC |
| 397 |
CALL PRINT_ERROR( msgBuf , myThid) |
| 398 |
ENDIF |
| 399 |
|
| 400 |
C x-face exchanges for xyz real*8 data |
| 401 |
arrElSize = 8 |
| 402 |
elStride = arrElSep*arrElSize |
| 403 |
CALL MPI_TYPE_HVECTOR(elCount,elLen,elStride,mpiTypeXFaceBlock_xyz_r8, |
| 404 |
O mpiTypeXFaceThread_xyz_r8(I), mpiRC ) |
| 405 |
IF ( mpiRC .NE. MPI_SUCCESS ) THEN |
| 406 |
eeBootError = .TRUE. |
| 407 |
WRITE(msgBuf,'(A,I)') |
| 408 |
& 'S/R INI_THREADS: MPI_TYPE_HVECTOR (mpiTypeXFaceThread_xyz_r8)', |
| 409 |
& mpiRC |
| 410 |
CALL PRINT_ERROR( msgBuf , myThid) |
| 411 |
ENDIF |
| 412 |
CALL MPI_TYPE_COMMIT(mpiTypeXFaceThread_xyz_r8(I),mpiRC) |
| 413 |
IF ( mpiRC .NE. MPI_SUCCESS ) THEN |
| 414 |
eeBootError = .TRUE. |
| 415 |
WRITE(msgBuf,'(A,I)') |
| 416 |
& 'S/R INI_THREADS: MPI_TYPE_COMMIT (mpiTypeXFaceThread_xyz_r8)', |
| 417 |
& mpiRC |
| 418 |
CALL PRINT_ERROR( msgBuf , myThid) |
| 419 |
ENDIF |
| 420 |
|
| 421 |
C y-face exchages for xy real*4 data |
| 422 |
elCount = myBxHi(I)-myBxLo(I)+1 |
| 423 |
elLen = 1 |
| 424 |
arrElSep = (sNx+OLx*2)*(sNy+OLy*2) |
| 425 |
arrElSize = 4 |
| 426 |
elStride = arrElSep*arrElSize |
| 427 |
CALL MPI_TYPE_HVECTOR(elCount,elLen,elStride,mpiTypeYFaceBlock_xy_r4, |
| 428 |
O mpiTypeYFaceThread_xy_r4(I), mpiRC ) |
| 429 |
IF ( mpiRC .NE. MPI_SUCCESS ) THEN |
| 430 |
eeBootError = .TRUE. |
| 431 |
WRITE(msgBuf,'(A,I)') |
| 432 |
& 'S/R INI_THREADS: MPI_TYPE_HVECTOR (mpiTypeYFaceThread_xy_r4)', |
| 433 |
& mpiRC |
| 434 |
CALL PRINT_ERROR( msgBuf , myThid) |
| 435 |
ENDIF |
| 436 |
CALL MPI_TYPE_COMMIT(mpiTypeYFaceThread_xy_r4(I),mpiRC) |
| 437 |
IF ( mpiRC .NE. MPI_SUCCESS ) THEN |
| 438 |
eeBootError = .TRUE. |
| 439 |
WRITE(msgBuf,'(A,I)') |
| 440 |
& 'S/R INI_THREADS: MPI_TYPE_COMMIT (mpiTypeYFaceThread_xy_r4)', |
| 441 |
& mpiRC |
| 442 |
CALL PRINT_ERROR( msgBuf , myThid) |
| 443 |
ENDIF |
| 444 |
|
| 445 |
C y-face exchages for xy real*8 data |
| 446 |
arrElSize = 8 |
| 447 |
elStride = arrElSep*arrElSize |
| 448 |
CALL MPI_TYPE_HVECTOR(elCount,elLen,elStride,mpiTypeYFaceBlock_xy_r8, |
| 449 |
O mpiTypeYFaceThread_xy_r8(I), mpiRC ) |
| 450 |
IF ( mpiRC .NE. MPI_SUCCESS ) THEN |
| 451 |
eeBootError = .TRUE. |
| 452 |
WRITE(msgBuf,'(A,I)') |
| 453 |
& 'S/R INI_THREADS: MPI_TYPE_HVECTOR (mpiTypeYFaceThread_xy_r8)', |
| 454 |
& mpiRC |
| 455 |
CALL PRINT_ERROR( msgBuf , myThid) |
| 456 |
ENDIF |
| 457 |
CALL MPI_TYPE_COMMIT(mpiTypeYFaceThread_xy_r8(I),mpiRC) |
| 458 |
IF ( mpiRC .NE. MPI_SUCCESS ) THEN |
| 459 |
eeBootError = .TRUE. |
| 460 |
WRITE(msgBuf,'(A,I)') |
| 461 |
& 'S/R INI_THREADS: MPI_TYPE_COMMIT (mpiTypeYFaceThread_xy_r8)', |
| 462 |
& mpiRC |
| 463 |
CALL PRINT_ERROR( msgBuf , myThid) |
| 464 |
ENDIF |
| 465 |
|
| 466 |
C y-face exchages for xyz real*4 data |
| 467 |
elCount = myBxHi(I)-myBxLo(I)+1 |
| 468 |
elLen = 1 |
| 469 |
arrElSep = (sNx+OLx*2)*(sNy+OLy*2)*Nz |
| 470 |
arrElSize = 4 |
| 471 |
elStride = arrElSep*arrElSize |
| 472 |
CALL MPI_TYPE_HVECTOR(elCount,elLen,elStride,mpiTypeYFaceBlock_xyz_r4, |
| 473 |
O mpiTypeYFaceThread_xyz_r4(I), mpiRC ) |
| 474 |
IF ( mpiRC .NE. MPI_SUCCESS ) THEN |
| 475 |
eeBootError = .TRUE. |
| 476 |
WRITE(msgBuf,'(A,I)') |
| 477 |
& 'S/R INI_THREADS: MPI_TYPE_HVECTOR (mpiTypeYFaceThread_xyz_r4)', |
| 478 |
& mpiRC |
| 479 |
CALL PRINT_ERROR( msgBuf , myThid) |
| 480 |
ENDIF |
| 481 |
CALL MPI_TYPE_COMMIT(mpiTypeYFaceThread_xyz_r4(I),mpiRC) |
| 482 |
IF ( mpiRC .NE. MPI_SUCCESS ) THEN |
| 483 |
eeBootError = .TRUE. |
| 484 |
WRITE(msgBuf,'(A,I)') |
| 485 |
& 'S/R INI_THREADS: MPI_TYPE_COMMIT (mpiTypeYFaceThread_xyz_r4)', |
| 486 |
& mpiRC |
| 487 |
CALL PRINT_ERROR( msgBuf , myThid) |
| 488 |
ENDIF |
| 489 |
|
| 490 |
C y-face exchages for xy real*8 data |
| 491 |
arrElSize = 8 |
| 492 |
elStride = arrElSep*arrElSize |
| 493 |
CALL MPI_TYPE_HVECTOR(elCount,elLen,elStride,mpiTypeYFaceBlock_xyz_r8, |
| 494 |
O mpiTypeYFaceThread_xyz_r8(I), mpiRC ) |
| 495 |
IF ( mpiRC .NE. MPI_SUCCESS ) THEN |
| 496 |
eeBootError = .TRUE. |
| 497 |
WRITE(msgBuf,'(A,I)') |
| 498 |
& 'S/R INI_THREADS: MPI_TYPE_HVECTOR (mpiTypeYFaceThread_xyz_r8)', |
| 499 |
& mpiRC |
| 500 |
CALL PRINT_ERROR( msgBuf , myThid) |
| 501 |
ENDIF |
| 502 |
CALL MPI_TYPE_COMMIT(mpiTypeYFaceThread_xyz_r8(I),mpiRC) |
| 503 |
IF ( mpiRC .NE. MPI_SUCCESS ) THEN |
| 504 |
eeBootError = .TRUE. |
| 505 |
WRITE(msgBuf,'(A,I)') |
| 506 |
& 'S/R INI_THREADS: MPI_TYPE_COMMIT (mpiTypeYFaceThread_xyz_r8)', |
| 507 |
& mpiRC |
| 508 |
CALL PRINT_ERROR( msgBuf , myThid) |
| 509 |
ENDIF |
| 510 |
|
| 511 |
ENDDO |
| 512 |
|
| 513 |
#ifndef ALWAYS_USE_MPI |
| 514 |
ENDIF |
| 515 |
#endif |
| 516 |
#endif /* ALLOW_USE_MPI */ |
| 517 |
|
| 518 |
C-- Calculate the thread numbers of the threads I might want to "message" |
| 519 |
C Notes: |
| 520 |
C 1. This code needs to be consistent with the code that maps threads to |
| 521 |
C blocks earlier in this routine in which threads are arranged |
| 522 |
C 13 14 15 16 /|\ |
| 523 |
C 9 10 11 12 | nTy |
| 524 |
C 5 6 7 8 | |
| 525 |
C 1 2 3 4 \|/ |
| 526 |
C <---- nTx ---> |
| 527 |
C on equally sized collections of sNx x sNy sub-blocks. |
| 528 |
DO I = 1, nThreads |
| 529 |
C Find thread to west, east, south, north using wrap around for |
| 530 |
C threads managing "outside" blocks. |
| 531 |
threadWest = I-1 |
| 532 |
IF ( myBxLo(I) .EQ. 1 ) threadWest = I+nTx-1 |
| 533 |
threadEast = I+1 |
| 534 |
IF ( myBxHi(I) .EQ. nSx ) threadEast = I-nTx+1 |
| 535 |
threadSouth = I-nTx |
| 536 |
IF ( myByLo(I) .EQ. 1 ) threadSouth = I+nTx*(nTy-1) |
| 537 |
threadNorth = I+nTx |
| 538 |
IF ( myByHi(I) .EQ. nSy ) threadNorth = I-nTx*(nTy-1) |
| 539 |
C Find thread to NW, NE, SW, SE - again with wrap around. |
| 540 |
threadNW = threadWest+nTx |
| 541 |
IF ( myByHi(threadWest) .EQ. nSy ) threadNW = threadWest-nTx*(nTy-1) |
| 542 |
threadNE = threadEast+nTx |
| 543 |
IF ( myByHi(threadEast) .EQ. nSy ) threadNE = threadEast-nTx*(nTy-1) |
| 544 |
threadSW = threadWest-nTx |
| 545 |
IF ( myByHi(threadWest) .EQ. 1 ) threadSW = threadWest+nTx*(nTy-1) |
| 546 |
threadSE = threadEast-nTx |
| 547 |
IF ( myByHi(threadEast) .EQ. 1 ) threadSE = threadEast+nTx*(nTy-1) |
| 548 |
myThrW(I) = threadWest |
| 549 |
myThrE(I) = threadEast |
| 550 |
myThrN(I) = threadNorth |
| 551 |
myThrS(I) = threadSouth |
| 552 |
myThrNW(I) = threadNW |
| 553 |
myThrNE(I) = threadNE |
| 554 |
myThrSW(I) = threadSW |
| 555 |
myThrSE(I) = threadSE |
| 556 |
ENDDO |
| 557 |
|
| 558 |
RETURN |
| 559 |
END |
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