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289 lines
9.2 KiB
Fortran
289 lines
9.2 KiB
Fortran
20 years ago
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program df_comm
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use f90sparse
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use mat_dist
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use read_mat
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use partgraph
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use comminfo
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implicit none
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! input parameters
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character(len=20) :: cmethd, prec
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character(len=40) :: mtrx_file
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character(len=20) :: mtrx_name, out_file, tmpstr
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character(len=200) :: charbuf
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integer :: inparms(20)
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double precision ddot
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external ddot
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integer, parameter :: izero=0, ione=1
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character, parameter :: order='r'
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real(kind(1.d0)), pointer, save :: b_col(:), x_col(:), r_col(:), &
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& b_col_glob(:), x_col_glob(:), r_col_glob(:), b_glob(:,:), &
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&z(:), q(:),z1(:), xm(:,:), ym(:,:)
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integer :: iargc, check_descr, convert_descr
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real(kind(1.d0)), parameter :: dzero = 0.d0, one = 1.d0
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real(kind(1.d0)) :: mpi_wtime, t1, t2, t3, tprec, tslv, ttot, &
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&r_amax, b_amax,bb(1,1), lambda,scale,resmx,resmxp, omega
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integer :: nrhs, nrow, nx1, nx2, n_row, n_col, dim,iread,ip,io,no,nmats,&
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& imat,irenum, igsmth, matop
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logical :: amroot
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external iargc, mpi_wtime
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integer bsze,overlap, nn, nprecs, novrs
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common/part/bsze,overlap
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integer, pointer :: work(:), precs(:), ovrs(:), comm_info(:,:)
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! sparse matrices
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type(d_spmat) :: a, aux_a, h
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type(d_prec) :: pre
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!!$ type(d_precn) :: aprc
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! dense matrices
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real(kind(1.d0)), pointer :: aux_b(:,:) , aux1(:), aux2(:), vdiag(:), &
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& aux_g(:,:), aux_x(:,:), d(:)
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! communications data structure
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type(desc_type) :: desc_a, desc_a_out
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! blacs parameters
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integer :: nprow, npcol, ictxt, iam, np, myprow, mypcol
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! solver paramters
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integer :: iter, itmax, ierr, itrace, ircode, ipart,&
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& methd, istopc, irst
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integer, pointer :: ierrv(:), ivg(:)
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character(len=5) :: afmt
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real(kind(1.d0)) :: err, eps
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integer iparm(20)
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real(kind(1.d0)) rparm(20)
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! other variables
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integer :: i,info,j, ntryslv
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integer :: internal, m,ii,nnzero, itryslv
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integer, parameter :: ncsw=4, ntcs=4
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real(kind(1.d0)), pointer :: tsthal(:,:)
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real(kind(1.d0)) :: tswmpi(ntcs,ncsw),tswsyn(ntcs,ncsw),tswsdrv(ntcs,ncsw)
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! common area
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integer m_problem, nproc, nc
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allocate(ierrv(6))
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! initialize blacs
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call blacs_pinfo(iam, np)
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call blacs_get(izero, izero, ictxt)
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! rectangular Grid, Np x 1
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call blacs_gridinit(ictxt, order, np, ione)
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call blacs_gridinfo(ictxt, nprow, npcol, myprow, mypcol)
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amroot = (myprow==0).and.(mypcol==0)
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afmt='CSR'
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!
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! Get parameters from file
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!
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if (amroot) then
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read(*,*) ipart
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call igebs2d(ictxt,'all',' ',1,1,ipart,1)
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read(*,*) nmats
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call igebs2d(ictxt,'all',' ',1,1,nmats,1)
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else
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call igebr2d(ictxt,'all',' ',1,1,ipart,1,0,0)
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call igebr2d(ictxt,'all',' ',1,1,nmats,1,0,0)
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endif
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do imat=1,nmats
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if (amroot) then
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!!$ read(*,*) mtrx_file,rhs_file
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read(*,'(a)') charbuf
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charbuf=adjustl(charbuf)
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i=index(charbuf," ")
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mtrx_file=charbuf(1:i-1)
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i=index(mtrx_file,"/",back=.true.)
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mtrx_name=trim(mtrx_file(i+1:))
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write(0,*) 'Read mtx rhs : "', mtrx_file
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i=index(mtrx_file,'.mtx')
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write(tmpstr,'("_",i1,"_",i2.2,".out")')ipart,np
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out_file=mtrx_file(1:i-1)//trim(tmpstr)
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write(0,*)' out file is ', out_file
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open(2,file=out_file,action='write')
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write(2,'("Matrix: ",a20)')mtrx_name
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write(2,'("Number of processes: ",i2)')np
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write(2,'("Partitioning: ",i1)')ipart
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write(2,'(" ")')
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write(2,'(" ")')
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close(2)
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endif
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call blacs_barrier(ictxt,'A')
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t1 = mpi_wtime()
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! read the input matrix to be processed and (possibly) the RHS
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nrhs = 1
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nproc = nprow
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if (amroot) then
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nullify(aux_b)
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call readmat(mtrx_file, aux_a, ictxt)
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m_problem = aux_a%m
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call igebs2d(ictxt,'a',' ',1,1,m_problem,1)
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allocate(aux_b(m_problem,1), stat=ircode)
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if (ircode /= 0) then
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write(0,*) 'memory allocation failure in df_sample'
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call blacs_abort(ictxt,-1)
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stop
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endif
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b_col_glob =>aux_b(:,1)
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do i=1, m_problem
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b_col_glob(i) = 1.d0
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enddo
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call dgebs2d(ictxt,'a',' ',m_problem,1,b_col_glob,m_problem)
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else
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call igebr2d(ictxt,'a',' ',1,1,m_problem,1,0,0)
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allocate(aux_b(m_problem,1), stat=ircode)
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if (ircode /= 0) then
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write(0,*) 'Memory allocation failure in DF_SAMPLE'
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call blacs_abort(ictxt,-1)
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stop
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endif
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b_col_glob =>aux_b(:,1)
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call dgebr2d(ictxt,'A',' ',m_problem,1,b_col_glob,m_problem,0,0)
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end if
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! switch over different partition types
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if (ipart.eq.0) then
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call blacs_barrier(ictxt,'A')
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write(0,*) 'Partition type: BLOCK'
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allocate(ivg(m_problem))
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call bld_partblock(m_problem,np,ivg)
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call matdist(aux_a, a, ivg, ictxt, &
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& desc_a,b_col_glob,b_col,fmt=afmt)
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else if (ipart.eq.1) then
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call blacs_barrier(ictxt,'A')
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write(0,*) 'partition type: BLK2'
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allocate(ivg(m_problem))
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call bld_partblk2(m_problem,np,ivg)
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call matdist(aux_a, a, ivg, ictxt, &
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& desc_a,b_col_glob,b_col,fmt=afmt)
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else if (ipart.eq.2) then
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write(0,*) 'partition type: GRAPH'
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if (amroot) then
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call build_grppart(aux_a%m,aux_a%fida,aux_a%ia1,aux_a%ia2,np)
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endif
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call distr_grppart(0,0,ictxt)
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if (.false.) then
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call matdist(aux_a, a, part_graph, ictxt, &
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& desc_a,b_col_glob,b_col,fmt=afmt)
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else
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call getv_grppart(ivg)
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call matdist(aux_a, a, ivg, ictxt, &
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& desc_a,b_col_glob,b_col,fmt=afmt)
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endif
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end if
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if(amroot) then
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allocate(comm_info(np,np))
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comm_info(:,:)=0
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end if
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call blacs_barrier(ictxt,'all')
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write(0,'("Getting communication info")')
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call get_comminfo(ictxt,desc_a,comm_info)
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if(amroot) then
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open(2,file=out_file,action='write',position='append')
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write(2,'("Exchange table:")')
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do i=1,np
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write(2,*)'Row ',i,' : ',comm_info(i,:)
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end do
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write(2,'(" ")')
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write(2,'(" ")')
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close(2)
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end if
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n_row = desc_a%matrix_data(n_row_)
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n_col = desc_a%matrix_data(n_col_)
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write(0,'("Allocating vectors")')
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call f90_psdsall(m_problem,ncsw,tsthal,ierrv,desc_a)
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forall (i=1:n_row)
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forall (j=1:ncsw)
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tsthal(i,j) = j * desc_a%loc_to_glob(i)
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end forall
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end forall
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tsthal(n_row+1:,:) = -1.d0
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tswmpi = 1.d200
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tswsyn = 1.d200
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tswsdrv = 1.d200
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write(0,'("Cycling")')
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do nc=1, ncsw
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do i=1, ntcs
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tsthal(n_row+1:,:) = -1.d0
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t1=mpi_wtime()
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call f90_pshalo(tsthal(:,1:nc),desc_a,trans='T',mode=SWAP_MPI)
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t2=mpi_wtime()-t1
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call dgamx2d(ictxt,'a',' ',ione, ione,t2,ione,t1,t1,-1,-1,-1)
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tswmpi(i,nc) = t2
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!! Add correctness check
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tsthal(n_row+1:,:) = -1.d0
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t1=mpi_wtime()
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call f90_pshalo(tsthal(:,1:nc),desc_a,trans='T',mode=SWAP_SYNC)
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t2=mpi_wtime()-t1
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call dgamx2d(ictxt,'a',' ',ione, ione,t2,ione,t1,t1,-1,-1,-1)
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tswsyn(i,nc) = t2
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!! Add correctness check
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tsthal(n_row+1:,:) = -1.d0
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t1=mpi_wtime()
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call f90_pshalo(tsthal(:,1:nc),desc_a,trans='T',mode=IOR(SWAP_SEND,SWAP_RECV))
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t2=mpi_wtime()-t1
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call dgamx2d(ictxt,'a',' ',ione, ione,t2,ione,t1,t1,-1,-1,-1)
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tswsdrv(i,nc) = t2
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!! Add correctness check
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end do
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end do
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if (amroot) then
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open(2,file=out_file,action='write',position='append')
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do nc=1, ncsw
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write(*,'(a18,1x,a4,1(1x,i2),1x,i5,5(1x,g9.4))') mtrx_name,'MPI',&
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& nprow,nc,minval(tswmpi(:,nc)),maxval(tswmpi(:,nc)),&
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& sum(tswmpi(:,nc))/ntcs
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write(2,'(a18,1x,a4,1(1x,i2),1x,i5,5(1x,g9.4))') mtrx_name,'MPI',&
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& nprow,nc,minval(tswmpi(:,nc)),maxval(tswmpi(:,nc)),&
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& sum(tswmpi(:,nc))/ntcs
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write(*,'(a18,1x,a4,1(1x,i2),1x,i5,5(1x,g9.4))') mtrx_name,'SYNC',&
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& nprow,nc,minval(tswsyn(:,nc)),maxval(tswsyn(:,nc)),&
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& sum(tswsyn(:,nc))/ntcs
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write(2,'(a18,1x,a4,1(1x,i2),1x,i5,5(1x,g9.4))') mtrx_name,'SYNC',&
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& nprow,nc,minval(tswsyn(:,nc)),maxval(tswsyn(:,nc)),&
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& sum(tswsyn(:,nc))/ntcs
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write(*,'(a18,1x,a4,1(1x,i2),1x,i5,5(1x,g9.4))') mtrx_name,'SDRV',&
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& nprow,nc,minval(tswsdrv(:,nc)),maxval(tswsdrv(:,nc)),&
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& sum(tswsdrv(:,nc))/ntcs
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write(2,'(a18,1x,a4,1(1x,i2),1x,i5,5(1x,g9.4))') mtrx_name,'SDRV',&
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& nprow,nc,minval(tswsdrv(:,nc)),maxval(tswsdrv(:,nc)),&
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& sum(tswsdrv(:,nc))/ntcs
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end do
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close(2)
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end if
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call f90_psdsfree(tsthal, desc_a)
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call f90_psdsfree(b_col, desc_a)
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call f90_psspfree(a, desc_a)
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call f90_psdscfree(desc_a,info)
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end do
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deallocate(ovrs,precs,ierrv, stat=info)
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write(0,*) 'Info from deallocate ',info
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call blacs_gridexit(ictxt)
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call blacs_exit(0)
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end program df_comm
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