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C $Header: /u/gcmpack/MITgcm/pkg/compon_communic/mitcplr_init2a.F,v 1.2 2007/10/08 23:58:21 jmc Exp $ |
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C $Name: $ |
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|
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!======================================================================= |
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subroutine mitcplr_init2a( myTypeStr ) |
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|
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implicit none |
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! Predefined constants/arrays |
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#include "CPLR_SIG.h" |
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! MPI variables |
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#include "mpif.h" |
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|
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! Arguments |
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character*(*) myTypeStr |
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! Local |
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integer myid, numprocs, ierr |
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integer n,j,lenbuf |
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integer ibuf(MAX_IBUF) |
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! ------------------------------------------------------------------ |
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|
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! Find-out my position (rank) in the "global" communicator |
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call MPI_COMM_RANK( MPI_COMM_myglobal, myid, ierr ) |
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if (ierr.ne.0) write(LogUnit,*) 'MITCPLR_init2a: ', |
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& ' Rank = ',myid,' MPI_COMM_RANK ierr=',ierr |
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! How big is the "global" comminicator? |
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call MPI_COMM_SIZE( MPI_COMM_myglobal, numprocs, ierr ) |
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if (ierr.ne.0) write(LogUnit,*) 'MITCPLR_init2a: ', |
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& ' Size = ',numprocs,' MPI_COMM_RANK ierr=',ierr |
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if (VERB) write(LogUnit,*) 'MITCPLR_init2a: ', |
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& ' Rank/Size = ',myid,' /',numprocs |
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|
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! - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
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|
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! Assume nothing again |
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num_coupler_procs=0 |
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|
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! Receive a message from each of the other processes in "myglobal" |
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do n=0,numprocs-1 |
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ibuf( 1)=myid |
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ibuf( 2)=0 |
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ibuf( 3)=0 |
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ibuf( 4)=0 |
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ibuf( 5)=0 |
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ibuf( 6)=0 |
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ibuf( 7)=0 |
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ibuf( 8)=0 |
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ibuf( 9)=0 |
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ibuf(10)=0 |
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ibuf(11)=0 |
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ibuf(12)=0 |
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lenbuf=12 |
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call MPI_Bcast( |
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& ibuf, lenbuf, MPI_INTEGER, |
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& n, |
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& MPI_COMM_myglobal, ierr ) |
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if (ierr.ne.0) write(LogUnit,*) 'MITCPLR_init2a: ', |
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& ' MPI_Bcast from ',ibuf(1),ibuf(2),' ierr=',ierr |
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|
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if ( ibuf(2).eq.MITCPLR_COUPLER ) then |
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! If the broadcaster is the "coupler" |
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num_coupler_procs=num_coupler_procs + 1 |
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num_procs_in_global=num_procs_in_global+1 |
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rank_coupler_procs(num_coupler_procs) = ibuf(1) |
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else |
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! If the broadcaster is a "component" |
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num_procs_in_local=num_procs_in_local+1 |
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num_procs_in_global=num_procs_in_global+1 |
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endif |
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|
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enddo |
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|
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if (num_coupler_procs .ne. 1) then |
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STOP 'MITCPLR_init2a: I can only handle one coupling process' |
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endif |
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|
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! - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
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|
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! Find-out my position (rank) in the "world" communicator |
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call MPI_COMM_RANK( MPI_COMM_World, n, ierr ) |
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if (ierr.ne.0) write(LogUnit,*) 'MITCPLR_init2a: ', |
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& ' Rank = ',myid,' MPI_COMM_RANK ierr=',ierr |
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! Find-out my position (rank) in the "local" communicator |
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call MPI_COMM_RANK( MPI_COMM_myglobal, j, ierr ) |
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if (ierr.ne.0) write(LogUnit,*) 'MITCPLR_init2a: ', |
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& ' Rank = ',myid,' MPI_COMM_RANK ierr=',ierr |
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|
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! Store the information |
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my_coupler_rank=rank_coupler_procs(1) |
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my_rank_in_world=n |
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my_rank_in_global=myid |
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my_rank_in_local=j |
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|
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if (VERB) write(LogUnit,*) 'MITCPLR_init2a: ', |
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& ' rank (W,G,L) =', |
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& my_rank_in_world,my_rank_in_global,my_rank_in_local, |
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& ' my_coupler_rank =',my_coupler_rank,' /',numprocs |
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|
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! ------------------------------------------------------------------ |
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call flush(LogUnit) |
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return |
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end |
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!======================================================================= |
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