C $Header: /u/gcmpack/MITgcm/pkg/compon_communic/mitcplr_init1.F,v 1.3 2013/11/27 21:48:30 jmc Exp $ C $Name: $ !======================================================================= subroutine MITCPLR_init1( myTypeStr, couplerFlag ) implicit none ! MPI variables #include "mpif.h" ! Predefined constants/arrays #include "CPLR_SIG.h" ! Arguments character*(*) myTypeStr logical couplerFlag ! Functions integer mitcplr_match_comp external mitcplr_match_comp ! Local integer myid, numprocs, ierr integer n,j integer MPI_GROUP_World integer MPI_GROUP_Tmp integer lenbuf integer compind integer ibuf(MAX_IBUF) character*(MAXLEN_COMP_NAME) cbuf ! ------------------------------------------------------------------ ! Find-out my position (rank) in the "world" communicator call MPI_COMM_RANK( MPI_COMM_WORLD, myid, ierr ) if (ierr.ne.0) write(0,*) 'MITCPLR_init1: ',myid,' ',myTypeStr, & ' Rank = ',myid,' MPI_COMM_RANK ierr=',ierr ! How big is the "world"? call MPI_COMM_SIZE( MPI_COMM_WORLD, numprocs, ierr ) if (ierr.ne.0) write(0,*) 'MITCPLR_init1: ',myid,' ',myTypeStr, & ' Size = ',numprocs,' MPI_COMM_RANK ierr=',ierr if (DEBUG) write(0,*) 'MITCPLR_init1: ',myid,' ',myTypeStr, & ' Rank/Size = ',myid,' /',numprocs ! - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ! Registration: collect/bcast lists of who is who ! Assume nothing num_components = 0 num_coupler_procs = 0 ! Receive a message from each of the other processes do n=0,numprocs-1 ibuf(1)=myid ibuf(2)=0 if ( couplerFlag ) ibuf(2)=MITCPLR_COUPLER ibuf(3)=0 ibuf(4)=0 ibuf(5)=0 ibuf(6)=0 ibuf(7)=0 call mitcplr_char2int( myTypeStr, ibuf(8) ) lenbuf=8+MAXLEN_COMP_NAME call MPI_Bcast( & ibuf, lenbuf, MPI_INTEGER, & n, & MPI_COMM_WORLD, ierr ) if (DEBUG) write(0,*) 'MITCPLR_init1: ',myid,' ',myTypeStr, & ' MPI_Bcast from ',ibuf(1),ibuf(2),' ierr=',ierr call mitcplr_int2char( ibuf(8), cbuf ) if (DEBUG) write(0,*) 'MITCPLR_init1: ',myid,' ',myTypeStr, & ' Bcast cbuf=',cbuf,'x' if ( ibuf(2).eq.MITCPLR_COUPLER ) then ! If the broadcaster is the "coupler" num_coupler_procs=num_coupler_procs + 1 rank_coupler_procs(num_coupler_procs) = ibuf(1) coupler_Name=cbuf else ! If the broadcaster is a "component" compind=mitcplr_match_comp( cbuf ) if (DEBUG) write(0,*) 'MITCPLR_init1: ',myid,' ',myTypeStr, & ' compind=',compind num_component_procs(compind)=num_component_procs(compind) + 1 j=num_component_procs(compind) rank_component_procs(j,compind)=ibuf(1) endif enddo if ( num_coupler_procs .ne. 1 ) then STOP 'MITCPLR_init1: I can only handle one coupler process' endif do compind=1,num_components num_compcplr_procs(compind)=num_component_procs(compind) + 1 do j=1,num_compcplr_procs(compind) rank_compcplr_procs(j,compind)=rank_component_procs(j,compind) enddo j=num_compcplr_procs(compind) rank_compcplr_procs(j,compind)=rank_coupler_procs(1) call mitcplr_sortranks( j, rank_compcplr_procs(1,compind) ) enddo if (DEBUG) write(0,*) 'MITCPLR_init1: ',myid,' ',myTypeStr, & ' coupler=',coupler_Name, & ( rank_coupler_procs(j),j=1,num_coupler_procs ) do n=1,num_components if (DEBUG) write(0,*) 'MITCPLR_init1: ',myid,' ',myTypeStr, & ' component=',component_Name(n), & ( rank_component_procs(j,n),j=1,num_component_procs(n) ) if (DEBUG) write(0,*) 'MITCPLR_init1: ',myid,' ',myTypeStr, & ' comp+cplr=',component_Name(n), & ( rank_compcplr_procs(j,n),j=1,num_compcplr_procs(n) ) enddo ! - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ! Create new groups and communicators ! Establish MPI_GROUP_World associated with MPI_COMM_WORLD call MPI_Comm_group( MPI_COMM_WORLD, MPI_GROUP_World, ierr ) if (DEBUG) write(0,*) 'MITCPLR_init1: ',myid,' ',myTypeStr, & ' MPI_Comm_group MPI_GROUP_World=',MPI_GROUP_World, & ' ierr=',ierr do n=1,num_components ! Create group MPI_GROUP_Tmp call MPI_Group_incl( & MPI_GROUP_World, & num_component_procs(n), & rank_component_procs(1,n), & MPI_GROUP_Tmp, & ierr ) if (DEBUG) write(0,*) 'MITCPLR_init1: ',myid,' ',myTypeStr, & ' MPI_Group_incl MPI_GROUP_Tmp=', & MPI_GROUP_Tmp,' ierr=',ierr ! Create communicator MPI_COMM_component call MPI_Comm_create( & MPI_COMM_WORLD, & MPI_GROUP_Tmp, & MPI_COMM_component(n), & ierr ) if (DEBUG) write(0,*) 'MITCPLR_init1: ',myid,' ',myTypeStr, & ' MPI_Comm_create MPI_COMM_component=',MPI_COMM_component(n), & ' ierr=',ierr ! Create group MPI_GROUP_Tmp call MPI_Group_incl( & MPI_GROUP_World, & num_compcplr_procs(n), & rank_compcplr_procs(1,n), & MPI_GROUP_Tmp, & ierr ) if (DEBUG) write(0,*) 'MITCPLR_init1: ',myid,' ',myTypeStr, & ' MPI_Group_incl MPI_GROUP_Tmp=', & MPI_GROUP_Tmp,' ierr=',ierr ! Create communicator MPI_COMM_compcplr call MPI_Comm_create( & MPI_COMM_WORLD, & MPI_GROUP_Tmp, & MPI_COMM_compcplr(n), & ierr ) if (DEBUG) write(0,*) 'MITCPLR_init1: ',myid,' ',myTypeStr, & ' MPI_Comm_create MPI_COMM_compcplr=',MPI_COMM_compcplr(n), & ' ierr=',ierr enddo ! - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - if ( couplerFlag ) then my_component_ind=-1 MPI_COMM_mylocal=MPI_COMM_World MPI_COMM_myglobal=MPI_COMM_World my_component_name=coupler_Name else compind=mitcplr_match_comp( myTypeStr ) my_component_ind=compind MPI_COMM_mylocal=MPI_COMM_component( compind ) MPI_COMM_myglobal=MPI_COMM_compcplr( compind ) my_component_name=component_Name( compind ) endif if (DEBUG) write(0,*) 'MITCPLR_init1: ',myid,' ',myTypeStr, & ' component num=',compind, & ' MPI_COMM=',MPI_COMM_mylocal,MPI_COMM_myglobal if ( couplerFlag ) then do n=1,num_components ! Find-out my position (rank) in the "global" communicator call MPI_COMM_RANK( MPI_COMM_compcplr(n), j, ierr ) if (ierr.ne.0) write(0,*) 'MITCPLR_init1: ',myid,' ',myTypeStr, & ' Rank = ',j,' MPI_COMM_RANK ierr=',ierr ! How big is the "global" communicator? call MPI_COMM_SIZE( MPI_COMM_compcplr(n), numprocs, ierr ) if (ierr.ne.0) write(0,*) 'MITCPLR_init1: ',myid,' ',myTypeStr, & ' Size = ',numprocs,' MPI_COMM_SIZE ierr=',ierr if (DEBUG) write(0,*) 'MITCPLR_init1: ',myid,' ',myTypeStr, & ' Rank/Size = ',j,' /',numprocs, & ' in Component =',n enddo else ! Find-out my position (rank) in the "global" communicator call MPI_COMM_RANK( MPI_COMM_myglobal, j, ierr ) if (ierr.ne.0) write(0,*) 'MITCPLR_init1: ',myid,' ',myTypeStr, & ' Rank = ',j,' MPI_COMM_RANK ierr=',ierr ! How big is the "global" communicator? call MPI_COMM_SIZE( MPI_COMM_myglobal, numprocs, ierr ) if (ierr.ne.0) write(0,*) 'MITCPLR_init1: ',myid,' ',myTypeStr, & ' Size = ',numprocs,' MPI_COMM_SIZE ierr=',ierr if (DEBUG) write(0,*) 'MITCPLR_init1: ',myid,' ',myTypeStr, & ' Rank/Size = ',j,' /',numprocs endif ! Open log file if ( couplerFlag ) j=myid write(cbuf(1:MAXLEN_COMP_NAME),'(2a,i4.4,a)') & myTypeStr,'.',j,'.clog' open(LogUnit,file=cbuf,status='unknown',form='formatted') write(LogUnit,'(2a)') '========================================', & '========================================' write(LogUnit,*) 'This is "',myTypeStr,'"' write(LogUnit,*) 'myid in MPI_COMM_World = ',myid if (.not.couplerFlag) & write(LogUnit,*) 'myid in MPI_COMM_Global = ',j ! ------------------------------------------------------------------ return end !=======================================================================