blob: bb84b0e93c3ee339a7724618183fb317f33e4420 [file] [log] [blame]
c---------------------------------------------------------------------
c---------------------------------------------------------------------
subroutine z_solve
c---------------------------------------------------------------------
c---------------------------------------------------------------------
c---------------------------------------------------------------------
c Performs line solves in Z direction by first factoring
c the block-tridiagonal matrix into an upper triangular matrix,
c and then performing back substitution to solve for the unknow
c vectors of each line.
c
c Make sure we treat elements zero to cell_size in the direction
c of the sweep.
c---------------------------------------------------------------------
include 'header.h'
include 'mpinpb.h'
integer c, kstart, stage,
> first, last, recv_id, error, r_status(MPI_STATUS_SIZE),
> isize,jsize,ksize,send_id
kstart = 0
if (timeron) call timer_start(t_zsolve)
c---------------------------------------------------------------------
c in our terminology stage is the number of the cell in the y-direct
c i.e. stage = 1 means the start of the line stage=ncells means end
c---------------------------------------------------------------------
do stage = 1,ncells
c = slice(3,stage)
isize = cell_size(1,c) - 1
jsize = cell_size(2,c) - 1
ksize = cell_size(3,c) - 1
c---------------------------------------------------------------------
c set last-cell flag
c---------------------------------------------------------------------
if (stage .eq. ncells) then
last = 1
else
last = 0
endif
if (stage .eq. 1) then
c---------------------------------------------------------------------
c This is the first cell, so solve without receiving data
c---------------------------------------------------------------------
first = 1
c call lhsz(c)
call z_solve_cell(first,last,c)
else
c---------------------------------------------------------------------
c Not the first cell of this line, so receive info from
c processor working on preceeding cell
c---------------------------------------------------------------------
first = 0
if (timeron) call timer_start(t_zcomm)
call z_receive_solve_info(recv_id,c)
c---------------------------------------------------------------------
c overlap computations and communications
c---------------------------------------------------------------------
c call lhsz(c)
c---------------------------------------------------------------------
c wait for completion
c---------------------------------------------------------------------
call mpi_wait(send_id,r_status,error)
call mpi_wait(recv_id,r_status,error)
if (timeron) call timer_stop(t_zcomm)
c---------------------------------------------------------------------
c install C'(kstart+1) and rhs'(kstart+1) to be used in this cell
c---------------------------------------------------------------------
call z_unpack_solve_info(c)
call z_solve_cell(first,last,c)
endif
if (last .eq. 0) call z_send_solve_info(send_id,c)
enddo
c---------------------------------------------------------------------
c now perform backsubstitution in reverse direction
c---------------------------------------------------------------------
do stage = ncells, 1, -1
c = slice(3,stage)
first = 0
last = 0
if (stage .eq. 1) first = 1
if (stage .eq. ncells) then
last = 1
c---------------------------------------------------------------------
c last cell, so perform back substitute without waiting
c---------------------------------------------------------------------
call z_backsubstitute(first, last,c)
else
if (timeron) call timer_start(t_zcomm)
call z_receive_backsub_info(recv_id,c)
call mpi_wait(send_id,r_status,error)
call mpi_wait(recv_id,r_status,error)
if (timeron) call timer_stop(t_zcomm)
call z_unpack_backsub_info(c)
call z_backsubstitute(first,last,c)
endif
if (first .eq. 0) call z_send_backsub_info(send_id,c)
enddo
if (timeron) call timer_stop(t_zsolve)
return
end
c---------------------------------------------------------------------
c---------------------------------------------------------------------
subroutine z_unpack_solve_info(c)
c---------------------------------------------------------------------
c---------------------------------------------------------------------
c---------------------------------------------------------------------
c unpack C'(-1) and rhs'(-1) for
c all i and j
c---------------------------------------------------------------------
include 'header.h'
integer i,j,m,n,ptr,c,kstart
kstart = 0
ptr = 0
do j=0,JMAX-1
do i=0,IMAX-1
do m=1,BLOCK_SIZE
do n=1,BLOCK_SIZE
lhsc(m,n,i,j,kstart-1,c) = out_buffer(ptr+n)
enddo
ptr = ptr+BLOCK_SIZE
enddo
do n=1,BLOCK_SIZE
rhs(n,i,j,kstart-1,c) = out_buffer(ptr+n)
enddo
ptr = ptr+BLOCK_SIZE
enddo
enddo
return
end
c---------------------------------------------------------------------
c---------------------------------------------------------------------
subroutine z_send_solve_info(send_id,c)
c---------------------------------------------------------------------
c---------------------------------------------------------------------
c---------------------------------------------------------------------
c pack up and send C'(kend) and rhs'(kend) for
c all i and j
c---------------------------------------------------------------------
include 'header.h'
include 'mpinpb.h'
integer i,j,m,n,ksize,ptr,c,ip,jp
integer error,send_id,buffer_size
ksize = cell_size(3,c)-1
ip = cell_coord(1,c) - 1
jp = cell_coord(2,c) - 1
buffer_size=MAX_CELL_DIM*MAX_CELL_DIM*
> (BLOCK_SIZE*BLOCK_SIZE + BLOCK_SIZE)
c---------------------------------------------------------------------
c pack up buffer
c---------------------------------------------------------------------
ptr = 0
do j=0,JMAX-1
do i=0,IMAX-1
do m=1,BLOCK_SIZE
do n=1,BLOCK_SIZE
in_buffer(ptr+n) = lhsc(m,n,i,j,ksize,c)
enddo
ptr = ptr+BLOCK_SIZE
enddo
do n=1,BLOCK_SIZE
in_buffer(ptr+n) = rhs(n,i,j,ksize,c)
enddo
ptr = ptr+BLOCK_SIZE
enddo
enddo
c---------------------------------------------------------------------
c send buffer
c---------------------------------------------------------------------
if (timeron) call timer_start(t_zcomm)
call mpi_isend(in_buffer, buffer_size,
> dp_type, successor(3),
> BOTTOM+ip+jp*NCELLS, comm_solve,
> send_id,error)
if (timeron) call timer_stop(t_zcomm)
return
end
c---------------------------------------------------------------------
c---------------------------------------------------------------------
subroutine z_send_backsub_info(send_id,c)
c---------------------------------------------------------------------
c---------------------------------------------------------------------
c---------------------------------------------------------------------
c pack up and send U(jstart) for all i and j
c---------------------------------------------------------------------
include 'header.h'
include 'mpinpb.h'
integer i,j,n,ptr,c,kstart,ip,jp
integer error,send_id,buffer_size
c---------------------------------------------------------------------
c Send element 0 to previous processor
c---------------------------------------------------------------------
kstart = 0
ip = cell_coord(1,c)-1
jp = cell_coord(2,c)-1
buffer_size=MAX_CELL_DIM*MAX_CELL_DIM*BLOCK_SIZE
ptr = 0
do j=0,JMAX-1
do i=0,IMAX-1
do n=1,BLOCK_SIZE
in_buffer(ptr+n) = rhs(n,i,j,kstart,c)
enddo
ptr = ptr+BLOCK_SIZE
enddo
enddo
if (timeron) call timer_start(t_zcomm)
call mpi_isend(in_buffer, buffer_size,
> dp_type, predecessor(3),
> TOP+ip+jp*NCELLS, comm_solve,
> send_id,error)
if (timeron) call timer_stop(t_zcomm)
return
end
c---------------------------------------------------------------------
c---------------------------------------------------------------------
subroutine z_unpack_backsub_info(c)
c---------------------------------------------------------------------
c---------------------------------------------------------------------
c---------------------------------------------------------------------
c unpack U(ksize) for all i and j
c---------------------------------------------------------------------
include 'header.h'
integer i,j,n,ptr,c
ptr = 0
do j=0,JMAX-1
do i=0,IMAX-1
do n=1,BLOCK_SIZE
backsub_info(n,i,j,c) = out_buffer(ptr+n)
enddo
ptr = ptr+BLOCK_SIZE
enddo
enddo
return
end
c---------------------------------------------------------------------
c---------------------------------------------------------------------
subroutine z_receive_backsub_info(recv_id,c)
c---------------------------------------------------------------------
c---------------------------------------------------------------------
c---------------------------------------------------------------------
c post mpi receives
c---------------------------------------------------------------------
include 'header.h'
include 'mpinpb.h'
integer error,recv_id,ip,jp,c,buffer_size
ip = cell_coord(1,c) - 1
jp = cell_coord(2,c) - 1
buffer_size=MAX_CELL_DIM*MAX_CELL_DIM*BLOCK_SIZE
call mpi_irecv(out_buffer, buffer_size,
> dp_type, successor(3),
> TOP+ip+jp*NCELLS, comm_solve,
> recv_id, error)
return
end
c---------------------------------------------------------------------
c---------------------------------------------------------------------
subroutine z_receive_solve_info(recv_id,c)
c---------------------------------------------------------------------
c---------------------------------------------------------------------
c---------------------------------------------------------------------
c post mpi receives
c---------------------------------------------------------------------
include 'header.h'
include 'mpinpb.h'
integer ip,jp,recv_id,error,c,buffer_size
ip = cell_coord(1,c) - 1
jp = cell_coord(2,c) - 1
buffer_size=MAX_CELL_DIM*MAX_CELL_DIM*
> (BLOCK_SIZE*BLOCK_SIZE + BLOCK_SIZE)
call mpi_irecv(out_buffer, buffer_size,
> dp_type, predecessor(3),
> BOTTOM+ip+jp*NCELLS, comm_solve,
> recv_id, error)
return
end
c---------------------------------------------------------------------
c---------------------------------------------------------------------
subroutine z_backsubstitute(first, last, c)
c---------------------------------------------------------------------
c---------------------------------------------------------------------
c---------------------------------------------------------------------
c back solve: if last cell, then generate U(ksize)=rhs(ksize)
c else assume U(ksize) is loaded in un pack backsub_info
c so just use it
c after call u(kstart) will be sent to next cell
c---------------------------------------------------------------------
include 'header.h'
integer first, last, c, i, k
integer m,n,j,jsize,isize,ksize,kstart
kstart = 0
isize = cell_size(1,c)-end(1,c)-1
jsize = cell_size(2,c)-end(2,c)-1
ksize = cell_size(3,c)-1
if (last .eq. 0) then
do j=start(2,c),jsize
do i=start(1,c),isize
c---------------------------------------------------------------------
c U(jsize) uses info from previous cell if not last cell
c---------------------------------------------------------------------
do m=1,BLOCK_SIZE
do n=1,BLOCK_SIZE
rhs(m,i,j,ksize,c) = rhs(m,i,j,ksize,c)
> - lhsc(m,n,i,j,ksize,c)*
> backsub_info(n,i,j,c)
enddo
enddo
enddo
enddo
endif
do k=ksize-1,kstart,-1
do j=start(2,c),jsize
do i=start(1,c),isize
do m=1,BLOCK_SIZE
do n=1,BLOCK_SIZE
rhs(m,i,j,k,c) = rhs(m,i,j,k,c)
> - lhsc(m,n,i,j,k,c)*rhs(n,i,j,k+1,c)
enddo
enddo
enddo
enddo
enddo
return
end
c---------------------------------------------------------------------
c---------------------------------------------------------------------
subroutine z_solve_cell(first,last,c)
c---------------------------------------------------------------------
c---------------------------------------------------------------------
c---------------------------------------------------------------------
c performs guaussian elimination on this cell.
c
c assumes that unpacking routines for non-first cells
c preload C' and rhs' from previous cell.
c
c assumed send happens outside this routine, but that
c c'(KMAX) and rhs'(KMAX) will be sent to next cell.
c---------------------------------------------------------------------
include 'header.h'
include 'work_lhs_vec.h'
integer first,last,c
integer i,j,k,m,n,isize,ksize,jsize,kstart
kstart = 0
isize = cell_size(1,c)-end(1,c)-1
jsize = cell_size(2,c)-end(2,c)-1
ksize = cell_size(3,c)-1
c---------------------------------------------------------------------
c zero the left hand side for starters
c set diagonal values to 1. This is overkill, but convenient
c---------------------------------------------------------------------
do i = 0, isize
do m = 1, 5
do n = 1, 5
lhsa(m,n,i,0) = 0.0d0
lhsb(m,n,i,0) = 0.0d0
lhsa(m,n,i,ksize) = 0.0d0
lhsb(m,n,i,ksize) = 0.0d0
enddo
lhsb(m,m,i,0) = 1.0d0
lhsb(m,m,i,ksize) = 1.0d0
enddo
enddo
do j=start(2,c),jsize
c---------------------------------------------------------------------
c This function computes the left hand side for the three z-factors
c---------------------------------------------------------------------
c---------------------------------------------------------------------
c Compute the indices for storing the block-diagonal matrix;
c determine c (labeled f) and s jacobians for cell c
c---------------------------------------------------------------------
do k = start(3,c)-1, cell_size(3,c)-end(3,c)
do i=start(1,c),isize
tmp1 = 1.0d0 / u(1,i,j,k,c)
tmp2 = tmp1 * tmp1
tmp3 = tmp1 * tmp2
fjac(1,1,i,k) = 0.0d+00
fjac(1,2,i,k) = 0.0d+00
fjac(1,3,i,k) = 0.0d+00
fjac(1,4,i,k) = 1.0d+00
fjac(1,5,i,k) = 0.0d+00
fjac(2,1,i,k) = - ( u(2,i,j,k,c)*u(4,i,j,k,c) )
> * tmp2
fjac(2,2,i,k) = u(4,i,j,k,c) * tmp1
fjac(2,3,i,k) = 0.0d+00
fjac(2,4,i,k) = u(2,i,j,k,c) * tmp1
fjac(2,5,i,k) = 0.0d+00
fjac(3,1,i,k) = - ( u(3,i,j,k,c)*u(4,i,j,k,c) )
> * tmp2
fjac(3,2,i,k) = 0.0d+00
fjac(3,3,i,k) = u(4,i,j,k,c) * tmp1
fjac(3,4,i,k) = u(3,i,j,k,c) * tmp1
fjac(3,5,i,k) = 0.0d+00
fjac(4,1,i,k) = - (u(4,i,j,k,c)*u(4,i,j,k,c) * tmp2 )
> + c2 * qs(i,j,k,c)
fjac(4,2,i,k) = - c2 * u(2,i,j,k,c) * tmp1
fjac(4,3,i,k) = - c2 * u(3,i,j,k,c) * tmp1
fjac(4,4,i,k) = ( 2.0d+00 - c2 )
> * u(4,i,j,k,c) * tmp1
fjac(4,5,i,k) = c2
fjac(5,1,i,k) = ( c2 * 2.0d0 * qs(i,j,k,c)
> - c1 * ( u(5,i,j,k,c) * tmp1 ) )
> * ( u(4,i,j,k,c) * tmp1 )
fjac(5,2,i,k) = - c2 * ( u(2,i,j,k,c)*u(4,i,j,k,c) )
> * tmp2
fjac(5,3,i,k) = - c2 * ( u(3,i,j,k,c)*u(4,i,j,k,c) )
> * tmp2
fjac(5,4,i,k) = c1 * ( u(5,i,j,k,c) * tmp1 )
> - c2 * ( qs(i,j,k,c)
> + u(4,i,j,k,c)*u(4,i,j,k,c) * tmp2 )
fjac(5,5,i,k) = c1 * u(4,i,j,k,c) * tmp1
njac(1,1,i,k) = 0.0d+00
njac(1,2,i,k) = 0.0d+00
njac(1,3,i,k) = 0.0d+00
njac(1,4,i,k) = 0.0d+00
njac(1,5,i,k) = 0.0d+00
njac(2,1,i,k) = - c3c4 * tmp2 * u(2,i,j,k,c)
njac(2,2,i,k) = c3c4 * tmp1
njac(2,3,i,k) = 0.0d+00
njac(2,4,i,k) = 0.0d+00
njac(2,5,i,k) = 0.0d+00
njac(3,1,i,k) = - c3c4 * tmp2 * u(3,i,j,k,c)
njac(3,2,i,k) = 0.0d+00
njac(3,3,i,k) = c3c4 * tmp1
njac(3,4,i,k) = 0.0d+00
njac(3,5,i,k) = 0.0d+00
njac(4,1,i,k) = - con43 * c3c4 * tmp2 * u(4,i,j,k,c)
njac(4,2,i,k) = 0.0d+00
njac(4,3,i,k) = 0.0d+00
njac(4,4,i,k) = con43 * c3 * c4 * tmp1
njac(4,5,i,k) = 0.0d+00
njac(5,1,i,k) = - ( c3c4
> - c1345 ) * tmp3 * (u(2,i,j,k,c)**2)
> - ( c3c4 - c1345 ) * tmp3 * (u(3,i,j,k,c)**2)
> - ( con43 * c3c4
> - c1345 ) * tmp3 * (u(4,i,j,k,c)**2)
> - c1345 * tmp2 * u(5,i,j,k,c)
njac(5,2,i,k) = ( c3c4 - c1345 ) * tmp2 * u(2,i,j,k,c)
njac(5,3,i,k) = ( c3c4 - c1345 ) * tmp2 * u(3,i,j,k,c)
njac(5,4,i,k) = ( con43 * c3c4
> - c1345 ) * tmp2 * u(4,i,j,k,c)
njac(5,5,i,k) = ( c1345 )* tmp1
enddo
enddo
c---------------------------------------------------------------------
c now joacobians set, so form left hand side in z direction
c---------------------------------------------------------------------
do k = start(3,c), ksize-end(3,c)
do i=start(1,c),isize
tmp1 = dt * tz1
tmp2 = dt * tz2
lhsa(1,1,i,k) = - tmp2 * fjac(1,1,i,k-1)
> - tmp1 * njac(1,1,i,k-1)
> - tmp1 * dz1
lhsa(1,2,i,k) = - tmp2 * fjac(1,2,i,k-1)
> - tmp1 * njac(1,2,i,k-1)
lhsa(1,3,i,k) = - tmp2 * fjac(1,3,i,k-1)
> - tmp1 * njac(1,3,i,k-1)
lhsa(1,4,i,k) = - tmp2 * fjac(1,4,i,k-1)
> - tmp1 * njac(1,4,i,k-1)
lhsa(1,5,i,k) = - tmp2 * fjac(1,5,i,k-1)
> - tmp1 * njac(1,5,i,k-1)
lhsa(2,1,i,k) = - tmp2 * fjac(2,1,i,k-1)
> - tmp1 * njac(2,1,i,k-1)
lhsa(2,2,i,k) = - tmp2 * fjac(2,2,i,k-1)
> - tmp1 * njac(2,2,i,k-1)
> - tmp1 * dz2
lhsa(2,3,i,k) = - tmp2 * fjac(2,3,i,k-1)
> - tmp1 * njac(2,3,i,k-1)
lhsa(2,4,i,k) = - tmp2 * fjac(2,4,i,k-1)
> - tmp1 * njac(2,4,i,k-1)
lhsa(2,5,i,k) = - tmp2 * fjac(2,5,i,k-1)
> - tmp1 * njac(2,5,i,k-1)
lhsa(3,1,i,k) = - tmp2 * fjac(3,1,i,k-1)
> - tmp1 * njac(3,1,i,k-1)
lhsa(3,2,i,k) = - tmp2 * fjac(3,2,i,k-1)
> - tmp1 * njac(3,2,i,k-1)
lhsa(3,3,i,k) = - tmp2 * fjac(3,3,i,k-1)
> - tmp1 * njac(3,3,i,k-1)
> - tmp1 * dz3
lhsa(3,4,i,k) = - tmp2 * fjac(3,4,i,k-1)
> - tmp1 * njac(3,4,i,k-1)
lhsa(3,5,i,k) = - tmp2 * fjac(3,5,i,k-1)
> - tmp1 * njac(3,5,i,k-1)
lhsa(4,1,i,k) = - tmp2 * fjac(4,1,i,k-1)
> - tmp1 * njac(4,1,i,k-1)
lhsa(4,2,i,k) = - tmp2 * fjac(4,2,i,k-1)
> - tmp1 * njac(4,2,i,k-1)
lhsa(4,3,i,k) = - tmp2 * fjac(4,3,i,k-1)
> - tmp1 * njac(4,3,i,k-1)
lhsa(4,4,i,k) = - tmp2 * fjac(4,4,i,k-1)
> - tmp1 * njac(4,4,i,k-1)
> - tmp1 * dz4
lhsa(4,5,i,k) = - tmp2 * fjac(4,5,i,k-1)
> - tmp1 * njac(4,5,i,k-1)
lhsa(5,1,i,k) = - tmp2 * fjac(5,1,i,k-1)
> - tmp1 * njac(5,1,i,k-1)
lhsa(5,2,i,k) = - tmp2 * fjac(5,2,i,k-1)
> - tmp1 * njac(5,2,i,k-1)
lhsa(5,3,i,k) = - tmp2 * fjac(5,3,i,k-1)
> - tmp1 * njac(5,3,i,k-1)
lhsa(5,4,i,k) = - tmp2 * fjac(5,4,i,k-1)
> - tmp1 * njac(5,4,i,k-1)
lhsa(5,5,i,k) = - tmp2 * fjac(5,5,i,k-1)
> - tmp1 * njac(5,5,i,k-1)
> - tmp1 * dz5
lhsb(1,1,i,k) = 1.0d+00
> + tmp1 * 2.0d+00 * njac(1,1,i,k)
> + tmp1 * 2.0d+00 * dz1
lhsb(1,2,i,k) = tmp1 * 2.0d+00 * njac(1,2,i,k)
lhsb(1,3,i,k) = tmp1 * 2.0d+00 * njac(1,3,i,k)
lhsb(1,4,i,k) = tmp1 * 2.0d+00 * njac(1,4,i,k)
lhsb(1,5,i,k) = tmp1 * 2.0d+00 * njac(1,5,i,k)
lhsb(2,1,i,k) = tmp1 * 2.0d+00 * njac(2,1,i,k)
lhsb(2,2,i,k) = 1.0d+00
> + tmp1 * 2.0d+00 * njac(2,2,i,k)
> + tmp1 * 2.0d+00 * dz2
lhsb(2,3,i,k) = tmp1 * 2.0d+00 * njac(2,3,i,k)
lhsb(2,4,i,k) = tmp1 * 2.0d+00 * njac(2,4,i,k)
lhsb(2,5,i,k) = tmp1 * 2.0d+00 * njac(2,5,i,k)
lhsb(3,1,i,k) = tmp1 * 2.0d+00 * njac(3,1,i,k)
lhsb(3,2,i,k) = tmp1 * 2.0d+00 * njac(3,2,i,k)
lhsb(3,3,i,k) = 1.0d+00
> + tmp1 * 2.0d+00 * njac(3,3,i,k)
> + tmp1 * 2.0d+00 * dz3
lhsb(3,4,i,k) = tmp1 * 2.0d+00 * njac(3,4,i,k)
lhsb(3,5,i,k) = tmp1 * 2.0d+00 * njac(3,5,i,k)
lhsb(4,1,i,k) = tmp1 * 2.0d+00 * njac(4,1,i,k)
lhsb(4,2,i,k) = tmp1 * 2.0d+00 * njac(4,2,i,k)
lhsb(4,3,i,k) = tmp1 * 2.0d+00 * njac(4,3,i,k)
lhsb(4,4,i,k) = 1.0d+00
> + tmp1 * 2.0d+00 * njac(4,4,i,k)
> + tmp1 * 2.0d+00 * dz4
lhsb(4,5,i,k) = tmp1 * 2.0d+00 * njac(4,5,i,k)
lhsb(5,1,i,k) = tmp1 * 2.0d+00 * njac(5,1,i,k)
lhsb(5,2,i,k) = tmp1 * 2.0d+00 * njac(5,2,i,k)
lhsb(5,3,i,k) = tmp1 * 2.0d+00 * njac(5,3,i,k)
lhsb(5,4,i,k) = tmp1 * 2.0d+00 * njac(5,4,i,k)
lhsb(5,5,i,k) = 1.0d+00
> + tmp1 * 2.0d+00 * njac(5,5,i,k)
> + tmp1 * 2.0d+00 * dz5
lhsc(1,1,i,j,k,c) = tmp2 * fjac(1,1,i,k+1)
> - tmp1 * njac(1,1,i,k+1)
> - tmp1 * dz1
lhsc(1,2,i,j,k,c) = tmp2 * fjac(1,2,i,k+1)
> - tmp1 * njac(1,2,i,k+1)
lhsc(1,3,i,j,k,c) = tmp2 * fjac(1,3,i,k+1)
> - tmp1 * njac(1,3,i,k+1)
lhsc(1,4,i,j,k,c) = tmp2 * fjac(1,4,i,k+1)
> - tmp1 * njac(1,4,i,k+1)
lhsc(1,5,i,j,k,c) = tmp2 * fjac(1,5,i,k+1)
> - tmp1 * njac(1,5,i,k+1)
lhsc(2,1,i,j,k,c) = tmp2 * fjac(2,1,i,k+1)
> - tmp1 * njac(2,1,i,k+1)
lhsc(2,2,i,j,k,c) = tmp2 * fjac(2,2,i,k+1)
> - tmp1 * njac(2,2,i,k+1)
> - tmp1 * dz2
lhsc(2,3,i,j,k,c) = tmp2 * fjac(2,3,i,k+1)
> - tmp1 * njac(2,3,i,k+1)
lhsc(2,4,i,j,k,c) = tmp2 * fjac(2,4,i,k+1)
> - tmp1 * njac(2,4,i,k+1)
lhsc(2,5,i,j,k,c) = tmp2 * fjac(2,5,i,k+1)
> - tmp1 * njac(2,5,i,k+1)
lhsc(3,1,i,j,k,c) = tmp2 * fjac(3,1,i,k+1)
> - tmp1 * njac(3,1,i,k+1)
lhsc(3,2,i,j,k,c) = tmp2 * fjac(3,2,i,k+1)
> - tmp1 * njac(3,2,i,k+1)
lhsc(3,3,i,j,k,c) = tmp2 * fjac(3,3,i,k+1)
> - tmp1 * njac(3,3,i,k+1)
> - tmp1 * dz3
lhsc(3,4,i,j,k,c) = tmp2 * fjac(3,4,i,k+1)
> - tmp1 * njac(3,4,i,k+1)
lhsc(3,5,i,j,k,c) = tmp2 * fjac(3,5,i,k+1)
> - tmp1 * njac(3,5,i,k+1)
lhsc(4,1,i,j,k,c) = tmp2 * fjac(4,1,i,k+1)
> - tmp1 * njac(4,1,i,k+1)
lhsc(4,2,i,j,k,c) = tmp2 * fjac(4,2,i,k+1)
> - tmp1 * njac(4,2,i,k+1)
lhsc(4,3,i,j,k,c) = tmp2 * fjac(4,3,i,k+1)
> - tmp1 * njac(4,3,i,k+1)
lhsc(4,4,i,j,k,c) = tmp2 * fjac(4,4,i,k+1)
> - tmp1 * njac(4,4,i,k+1)
> - tmp1 * dz4
lhsc(4,5,i,j,k,c) = tmp2 * fjac(4,5,i,k+1)
> - tmp1 * njac(4,5,i,k+1)
lhsc(5,1,i,j,k,c) = tmp2 * fjac(5,1,i,k+1)
> - tmp1 * njac(5,1,i,k+1)
lhsc(5,2,i,j,k,c) = tmp2 * fjac(5,2,i,k+1)
> - tmp1 * njac(5,2,i,k+1)
lhsc(5,3,i,j,k,c) = tmp2 * fjac(5,3,i,k+1)
> - tmp1 * njac(5,3,i,k+1)
lhsc(5,4,i,j,k,c) = tmp2 * fjac(5,4,i,k+1)
> - tmp1 * njac(5,4,i,k+1)
lhsc(5,5,i,j,k,c) = tmp2 * fjac(5,5,i,k+1)
> - tmp1 * njac(5,5,i,k+1)
> - tmp1 * dz5
enddo
enddo
c---------------------------------------------------------------------
c outer most do loops - sweeping in i direction
c---------------------------------------------------------------------
if (first .eq. 1) then
c---------------------------------------------------------------------
c multiply c(i,j,kstart) by b_inverse and copy back to c
c multiply rhs(kstart) by b_inverse(kstart) and copy to rhs
c---------------------------------------------------------------------
!dir$ ivdep
do i=start(1,c),isize
call binvcrhs( lhsb(1,1,i,kstart),
> lhsc(1,1,i,j,kstart,c),
> rhs(1,i,j,kstart,c) )
enddo
endif
c---------------------------------------------------------------------
c begin inner most do loop
c do all the elements of the cell unless last
c---------------------------------------------------------------------
do k=kstart+first,ksize-last
!dir$ ivdep
do i=start(1,c),isize
c---------------------------------------------------------------------
c subtract A*lhs_vector(k-1) from lhs_vector(k)
c
c rhs(k) = rhs(k) - A*rhs(k-1)
c---------------------------------------------------------------------
call matvec_sub(lhsa(1,1,i,k),
> rhs(1,i,j,k-1,c),rhs(1,i,j,k,c))
c---------------------------------------------------------------------
c B(k) = B(k) - C(k-1)*A(k)
c call matmul_sub(aa,i,j,k,c,cc,i,j,k-1,c,bb,i,j,k,c)
c---------------------------------------------------------------------
call matmul_sub(lhsa(1,1,i,k),
> lhsc(1,1,i,j,k-1,c),
> lhsb(1,1,i,k))
c---------------------------------------------------------------------
c multiply c(i,j,k) by b_inverse and copy back to c
c multiply rhs(i,j,1) by b_inverse(i,j,1) and copy to rhs
c---------------------------------------------------------------------
call binvcrhs( lhsb(1,1,i,k),
> lhsc(1,1,i,j,k,c),
> rhs(1,i,j,k,c) )
enddo
enddo
c---------------------------------------------------------------------
c Now finish up special cases for last cell
c---------------------------------------------------------------------
if (last .eq. 1) then
!dir$ ivdep
do i=start(1,c),isize
c---------------------------------------------------------------------
c rhs(ksize) = rhs(ksize) - A*rhs(ksize-1)
c---------------------------------------------------------------------
call matvec_sub(lhsa(1,1,i,ksize),
> rhs(1,i,j,ksize-1,c),rhs(1,i,j,ksize,c))
c---------------------------------------------------------------------
c B(ksize) = B(ksize) - C(ksize-1)*A(ksize)
c call matmul_sub(aa,i,j,ksize,c,
c $ cc,i,j,ksize-1,c,bb,i,j,ksize,c)
c---------------------------------------------------------------------
call matmul_sub(lhsa(1,1,i,ksize),
> lhsc(1,1,i,j,ksize-1,c),
> lhsb(1,1,i,ksize))
c---------------------------------------------------------------------
c multiply rhs(ksize) by b_inverse(ksize) and copy to rhs
c---------------------------------------------------------------------
call binvrhs( lhsb(1,1,i,ksize),
> rhs(1,i,j,ksize,c) )
enddo
endif
enddo
return
end