C $Header: /u/gcmpack/MITgcm/pkg/compon_communic/couprecv_r4.F,v 1.2 2007/10/08 23:58:20 jmc Exp $ C $Name: $ !======================================================================= subroutine COUPRECV_R4( component, dataname, Nx, Ny, arr ) implicit none ! Arguments character*(*) component character*(*) dataname integer Nx,Ny real*4 arr(Nx,Ny) ! Predefined constants/arrays #include "CPLR_SIG.h" ! MPI variables #include "mpif.h" integer count,dtype,rank,tag,comm,ierr integer stat(MPI_STATUS_SIZE) ! Functions integer mitcplr_match_comp integer generate_tag ! Local integer compind,numprocs integer i,j,ij,n integer Ni,Io,Nj,Jo character*(MAXLEN_COMP_NAME) recvdname ! ------------------------------------------------------------------ ! Establish who I am communicating with compind=mitcplr_match_comp( component ) if (compind.le.0) stop 'couprecv_r4: Bad component id' comm=MPI_COMM_compcplr( compind ) numprocs=num_component_procs(compind) if (numprocs.lt.1) then write(LogUnit,*) 'couprecv_r4: compind = ',compind stop 'couprecv_r4: numprocs < 1' endif if (VERB) & write(LogUnit,*) 'couprecv_r4: ',component_Name(compind) if (VERB) & write(LogUnit,*) 'couprecv_r4: dataname=',dataname ! Foreach component process do n=1,numprocs ! Receive message count=HEADER_SIZE+MAX_R4_BUFLEN dtype=MPI_REAL tag=generate_tag(102,n,dataname) rank=rank_component_procs(n,compind) if (VERB) then write(LogUnit,*) 'couprecv_r4: calling MPI_Recv rank=',rank, & ' proc=',n,'/',numprocs call FLUSH(LogUnit) endif call MPI_RECV(r4buf, count, dtype, rank, tag, comm, stat, ierr) if (VERB) then write(LogUnit,*) 'couprecv_r4: returned ierr=',ierr call FLUSH(LogUnit) endif if (ierr.ne.0) then write(LogUnit,*) 'couprecv_r4tiles: rank(W,G)=', & my_rank_in_world,my_rank_in_global, & ' ierr=',ierr stop 'couprecv_r4: MPI_Recv failed' endif ! Extract header Io=int(0.5+r4buf(1)) Ni=int(0.5+r4buf(2)) Jo=int(0.5+r4buf(3)) Nj=int(0.5+r4buf(4)) if (Io+Ni-1.gt.Nx .or. Io.lt.1) then write(LogUnit,*) 'couprecv_r4tiles: Io,Ni=',Io,Ni stop 'couprecv_r4: Incompatible header/target array' endif if (Jo+Nj-1.gt.Ny .or. Jo.lt.1) then write(LogUnit,*) 'couprecv_r4tiles: Jo,Nj=',Jo,Nj stop 'couprecv_r4: Incompatible header/target array' endif call MITCPLR_REAL2CHAR( r4buf(9), recvdname ) if (recvdname .ne. dataname) then write(LogUnit,*) 'couprecv_r4: recvdname = ',recvdname write(LogUnit,*) 'couprecv_r4: dataname = ',dataname stop 'couprecv_r4: recvdname != dataname' endif ! Extract data do j=1,Nj do i=1,Ni ij=HEADER_SIZE+i+Ni*(j-1) arr(Io+i-1,Jo+j-1)=r4buf(ij) enddo enddo enddo ! ------------------------------------------------------------------ return end
!=======================================================================