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C $Header: /u/gcmpack/MITgcm/pkg/compon_communic/coupsend_r4.F,v 1.2 2007/10/08 23:58:20 jmc Exp $ |
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C $Name: $ |
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|
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!======================================================================= |
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subroutine coupsend_r4( component, dataname, Nx, Ny, arr ) |
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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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! Arguments |
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character*(*) component |
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character*(*) dataname |
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integer Nx,Ny |
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real*4 arr(Nx,Ny) |
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! Functions |
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integer mitcplr_match_comp |
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integer generate_tag |
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external mitcplr_match_comp |
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external generate_tag |
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! Local |
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integer count,dtype,dest,tag,comm,ierr |
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integer compind,numprocs |
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integer i,j,ij,n |
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integer Ni,Io,Nj,Jo |
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! ------------------------------------------------------------------ |
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|
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! Establish who I am communicating with |
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compind=mitcplr_match_comp( component ) |
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if (compind.le.0) stop 'coupsend_r4: Bad component id' |
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comm=MPI_COMM_compcplr( compind ) |
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numprocs=num_component_procs(compind) |
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if (numprocs.lt.1) then |
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write(LogUnit,*) 'coupsend_r4: compind = ',compind |
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stop 'coupsend_r4: numprocs < 1' |
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endif |
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if (VERB) |
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& write(LogUnit,*) 'coupsend_r4: ',component_Name(compind) |
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if (VERB) |
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& write(LogUnit,*) 'coupsend_r4: dataname=',dataname |
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|
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! Foreach component process |
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do n=1,numprocs |
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|
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! Create header |
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Io=component_tile_i0(1,n,compind) |
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Jo=component_tile_j0(1,n,compind) |
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Ni=component_tile_nx(1,n,compind) |
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Nj=component_tile_ny(1,n,compind) |
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r4buf(1)=float( Io ) |
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r4buf(2)=float( Jo ) |
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r4buf(3)=float( Ni ) |
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r4buf(4)=float( Nj ) |
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call mitcplr_char2real( dataname, r4buf(9) ) |
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|
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! Pack data |
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do j=1,Nj |
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do i=1,Ni |
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ij=HEADER_SIZE+i+Ni*(j-1) |
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r4buf(ij)=arr(Io+i-1,Jo+j-1) |
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enddo |
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enddo |
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|
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! Send message |
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count=HEADER_SIZE+Ni*Nj |
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dtype=MPI_REAL |
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tag=generate_tag(121,n,dataname) |
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dest=rank_component_procs(n,compind) |
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|
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if (VERB) then |
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write(LogUnit,*) 'coupsend_r4: calling MPI_Send dest=',dest, |
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& ' proc=',n,'/',numprocs |
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call flush(LogUnit) |
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endif |
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call MPI_Send( r4buf, count, dtype, dest, tag, comm, ierr ) |
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if (VERB) then |
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write(LogUnit,*) 'coupsend_r4: returned ierr=',ierr |
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call flush(LogUnit) |
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endif |
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|
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if (ierr.ne.0) then |
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write(LogUnit,*) 'coupsend_r4tiles: rank(W,G)=', |
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& my_rank_in_world,my_rank_in_global, |
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& ' ierr=',ierr |
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stop 'coupsend_r4: MPI_Send failed' |
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endif |
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|
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enddo ! n |
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|
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! ------------------------------------------------------------------ |
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return |
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end |
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!======================================================================= |
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