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psblas3/base/tools/psb_map.f90

661 lines
21 KiB
Fortran

!!$
!!$ Parallel Sparse BLAS version 2.2
!!$ (C) Copyright 2006/2007/2008
!!$ Salvatore Filippone University of Rome Tor Vergata
!!$ Alfredo Buttari University of Rome Tor Vergata
!!$
!!$ Redistribution and use in source and binary forms, with or without
!!$ modification, are permitted provided that the following conditions
!!$ are met:
!!$ 1. Redistributions of source code must retain the above copyright
!!$ notice, this list of conditions and the following disclaimer.
!!$ 2. Redistributions in binary form must reproduce the above copyright
!!$ notice, this list of conditions, and the following disclaimer in the
!!$ documentation and/or other materials provided with the distribution.
!!$ 3. The name of the PSBLAS group or the names of its contributors may
!!$ not be used to endorse or promote products derived from this
!!$ software without specific written permission.
!!$
!!$ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
!!$ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
!!$ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
!!$ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
!!$ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
!!$ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
!!$ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
!!$ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
!!$ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
!!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
!!$ POSSIBILITY OF SUCH DAMAGE.
!!$
!!$
!!$
!
!
subroutine psb_s_map_X2Y(alpha,x,beta,y,map,info,work)
use psb_sparse_mod, psb_protect_name => psb_s_map_X2Y
implicit none
type(psb_slinmap_type), intent(in) :: map
real(psb_spk_), intent(in) :: alpha,beta
real(psb_spk_), intent(inout) :: x(:)
real(psb_spk_), intent(out) :: y(:)
integer, intent(out) :: info
real(psb_spk_), optional :: work(:)
!
real(psb_spk_), allocatable :: xt(:), yt(:)
integer :: i, j, nr1, nc1,nr2, nc2,&
& map_kind, map_data, nr, ictxt
character(len=20), parameter :: name='psb_map_X2Y'
info = 0
if (.not.psb_is_asb_map(map)) then
write(0,*) trim(name),' Invalid descriptor input'
info = 1
return
end if
map_kind = psb_get_map_kind(map)
select case(map_kind)
case(psb_map_aggr_)
ictxt = psb_cd_get_context(map%p_desc_Y)
nr2 = psb_cd_get_global_rows(map%p_desc_Y)
nc2 = psb_cd_get_local_cols(map%p_desc_Y)
allocate(yt(nc2),stat=info)
if (info == 0) call psb_halo(x,map%p_desc_X,info,work=work)
if (info == 0) call psb_csmm(sone,map%map_X2Y,x,szero,yt,info)
if ((info == 0) .and. psb_is_repl_desc(map%p_desc_Y)) then
call psb_sum(ictxt,yt(1:nr2))
end if
if (info == 0) call psb_geaxpby(alpha,yt,beta,y,map%p_desc_Y,info)
if (info /= 0) then
write(0,*) trim(name),' Error from inner routines',info
info = -1
end if
case(psb_map_gen_linear_)
ictxt = psb_cd_get_context(map%desc_Y)
nr1 = psb_cd_get_local_rows(map%desc_X)
nc1 = psb_cd_get_local_cols(map%desc_X)
nr2 = psb_cd_get_global_rows(map%desc_Y)
nc2 = psb_cd_get_local_cols(map%desc_Y)
allocate(xt(nc1),yt(nc2),stat=info)
xt(1:nr1) = x(1:nr1)
if (info == 0) call psb_halo(xt,map%desc_X,info,work=work)
if (info == 0) call psb_csmm(sone,map%map_X2Y,xt,szero,yt,info)
if ((info == 0) .and. psb_is_repl_desc(map%desc_Y)) then
call psb_sum(ictxt,yt(1:nr2))
end if
if (info == 0) call psb_geaxpby(alpha,yt,beta,y,map%desc_Y,info)
if (info /= 0) then
write(0,*) trim(name),' Error from inner routines',info
info = -1
end if
case default
write(0,*) trim(name),' Invalid descriptor input'
info = 1
return
end select
end subroutine psb_s_map_X2Y
!
! Takes a vector x from space map%p_desc_Y and maps it onto
! map%p_desc_X under map%map_Y2X possibly with communication
! due to exch_bk_idx
!
subroutine psb_s_map_Y2X(alpha,x,beta,y,map,info,work)
use psb_sparse_mod, psb_protect_name => psb_s_map_Y2X
implicit none
type(psb_slinmap_type), intent(in) :: map
real(psb_spk_), intent(in) :: alpha,beta
real(psb_spk_), intent(inout) :: x(:)
real(psb_spk_), intent(out) :: y(:)
integer, intent(out) :: info
real(psb_spk_), optional :: work(:)
!
real(psb_spk_), allocatable :: xt(:), yt(:)
integer :: i, j, nr1, nc1,nr2, nc2,&
& map_kind, map_data, nr, ictxt
character(len=20), parameter :: name='psb_map_Y2X'
info = 0
if (.not.psb_is_asb_map(map)) then
write(0,*) trim(name),' Invalid descriptor input'
info = 1
return
end if
map_kind = psb_get_map_kind(map)
select case(map_kind)
case(psb_map_aggr_)
ictxt = psb_cd_get_context(map%p_desc_X)
nr2 = psb_cd_get_global_rows(map%p_desc_X)
nc2 = psb_cd_get_local_cols(map%p_desc_X)
allocate(yt(nc2),stat=info)
if (info == 0) call psb_halo(x,map%p_desc_Y,info,work=work)
if (info == 0) call psb_csmm(sone,map%map_Y2X,x,szero,yt,info)
if ((info == 0) .and. psb_is_repl_desc(map%p_desc_X)) then
call psb_sum(ictxt,yt(1:nr2))
end if
if (info == 0) call psb_geaxpby(alpha,yt,beta,y,map%p_desc_X,info)
if (info /= 0) then
write(0,*) trim(name),' Error from inner routines',info
info = -1
end if
case(psb_map_gen_linear_)
ictxt = psb_cd_get_context(map%desc_X)
nr1 = psb_cd_get_local_rows(map%desc_Y)
nc1 = psb_cd_get_local_cols(map%desc_Y)
nr2 = psb_cd_get_global_rows(map%desc_X)
nc2 = psb_cd_get_local_cols(map%desc_X)
allocate(xt(nc1),yt(nc2),stat=info)
xt(1:nr1) = x(1:nr1)
if (info == 0) call psb_halo(xt,map%desc_Y,info,work=work)
if (info == 0) call psb_csmm(sone,map%map_Y2X,xt,szero,yt,info)
if ((info == 0) .and. psb_is_repl_desc(map%desc_X)) then
call psb_sum(ictxt,yt(1:nr2))
end if
if (info == 0) call psb_geaxpby(alpha,yt,beta,y,map%desc_X,info)
if (info /= 0) then
write(0,*) trim(name),' Error from inner routines',info
info = -1
end if
case default
write(0,*) trim(name),' Invalid descriptor input'
info = 1
return
end select
end subroutine psb_s_map_Y2X
!
! Takes a vector x from space map%p_desc_X and maps it onto
! map%p_desc_Y under map%map_X2Y possibly with communication
! due to exch_fw_idx
!
subroutine psb_d_map_X2Y(alpha,x,beta,y,map,info,work)
use psb_sparse_mod, psb_protect_name => psb_d_map_X2Y
implicit none
type(psb_dlinmap_type), intent(in) :: map
real(psb_dpk_), intent(in) :: alpha,beta
real(psb_dpk_), intent(inout) :: x(:)
real(psb_dpk_), intent(out) :: y(:)
integer, intent(out) :: info
real(psb_dpk_), optional :: work(:)
!
real(psb_dpk_), allocatable :: xt(:), yt(:)
integer :: i, j, nr1, nc1,nr2, nc2 ,&
& map_kind, map_data, nr, ictxt
character(len=20), parameter :: name='psb_map_X2Y'
info = 0
if (.not.psb_is_asb_map(map)) then
write(0,*) trim(name),' Invalid descriptor input: unassembled'
info = 1
return
end if
map_kind = psb_get_map_kind(map)
select case(map_kind)
case(psb_map_aggr_)
ictxt = psb_cd_get_context(map%p_desc_Y)
nr2 = psb_cd_get_global_rows(map%p_desc_Y)
nc2 = psb_cd_get_local_cols(map%p_desc_Y)
allocate(yt(nc2),stat=info)
if (info == 0) call psb_halo(x,map%p_desc_X,info,work=work)
if (info == 0) call psb_csmm(done,map%map_X2Y,x,dzero,yt,info)
if ((info == 0) .and. psb_is_repl_desc(map%p_desc_Y)) then
call psb_sum(ictxt,yt(1:nr2))
end if
if (info == 0) call psb_geaxpby(alpha,yt,beta,y,map%p_desc_Y,info)
if (info /= 0) then
write(0,*) trim(name),' Error from inner routines',info
info = -1
end if
case(psb_map_gen_linear_)
ictxt = psb_cd_get_context(map%desc_Y)
nr1 = psb_cd_get_local_rows(map%desc_X)
nc1 = psb_cd_get_local_cols(map%desc_X)
nr2 = psb_cd_get_global_rows(map%desc_Y)
nc2 = psb_cd_get_local_cols(map%desc_Y)
allocate(xt(nc1),yt(nc2),stat=info)
xt(1:nr1) = x(1:nr1)
if (info == 0) call psb_halo(xt,map%desc_X,info,work=work)
if (info == 0) call psb_csmm(done,map%map_X2Y,xt,dzero,yt,info)
if ((info == 0) .and. psb_is_repl_desc(map%desc_Y)) then
call psb_sum(ictxt,yt(1:nr2))
end if
if (info == 0) call psb_geaxpby(alpha,yt,beta,y,map%desc_Y,info)
if (info /= 0) then
write(0,*) trim(name),' Error from inner routines',info
info = -1
end if
case default
write(0,*) trim(name),' Invalid descriptor input', &
& map_kind, psb_map_aggr_, psb_map_gen_linear_
info = 1
return
end select
end subroutine psb_d_map_X2Y
!
! Takes a vector x from space map%p_desc_Y and maps it onto
! map%p_desc_X under map%map_Y2X possibly with communication
! due to exch_bk_idx
!
subroutine psb_d_map_Y2X(alpha,x,beta,y,map,info,work)
use psb_sparse_mod, psb_protect_name => psb_d_map_Y2X
implicit none
type(psb_dlinmap_type), intent(in) :: map
real(psb_dpk_), intent(in) :: alpha,beta
real(psb_dpk_), intent(inout) :: x(:)
real(psb_dpk_), intent(out) :: y(:)
integer, intent(out) :: info
real(psb_dpk_), optional :: work(:)
!
real(psb_dpk_), allocatable :: xt(:), yt(:)
integer :: i, j, nr1, nc1,nr2, nc2,&
& map_kind, map_data, nr, ictxt
character(len=20), parameter :: name='psb_map_Y2X'
info = 0
if (.not.psb_is_asb_map(map)) then
write(0,*) trim(name),' Invalid descriptor input'
info = 1
return
end if
map_kind = psb_get_map_kind(map)
select case(map_kind)
case(psb_map_aggr_)
ictxt = psb_cd_get_context(map%p_desc_X)
nr2 = psb_cd_get_global_rows(map%p_desc_X)
nc2 = psb_cd_get_local_cols(map%p_desc_X)
allocate(yt(nc2),stat=info)
if (info == 0) call psb_halo(x,map%p_desc_Y,info,work=work)
if (info == 0) call psb_csmm(done,map%map_Y2X,x,dzero,yt,info)
if ((info == 0) .and. psb_is_repl_desc(map%p_desc_X)) then
call psb_sum(ictxt,yt(1:nr2))
end if
if (info == 0) call psb_geaxpby(alpha,yt,beta,y,map%p_desc_X,info)
if (info /= 0) then
write(0,*) trim(name),' Error from inner routines',info
info = -1
end if
case(psb_map_gen_linear_)
ictxt = psb_cd_get_context(map%desc_X)
nr1 = psb_cd_get_local_rows(map%desc_Y)
nc1 = psb_cd_get_local_cols(map%desc_Y)
nr2 = psb_cd_get_global_rows(map%desc_X)
nc2 = psb_cd_get_local_cols(map%desc_X)
allocate(xt(nc1),yt(nc2),stat=info)
xt(1:nr1) = x(1:nr1)
if (info == 0) call psb_halo(xt,map%desc_Y,info,work=work)
if (info == 0) call psb_csmm(done,map%map_Y2X,xt,dzero,yt,info)
if ((info == 0) .and. psb_is_repl_desc(map%desc_X)) then
call psb_sum(ictxt,yt(1:nr2))
end if
if (info == 0) call psb_geaxpby(alpha,yt,beta,y,map%desc_X,info)
if (info /= 0) then
write(0,*) trim(name),' Error from inner routines',info
info = -1
end if
case default
write(0,*) trim(name),' Invalid descriptor input'
info = 1
return
end select
end subroutine psb_d_map_Y2X
!
! Takes a vector x from space map%p_desc_X and maps it onto
! map%p_desc_Y under map%map_X2Y possibly with communication
! due to exch_fw_idx
!
subroutine psb_c_map_X2Y(alpha,x,beta,y,map,info,work)
use psb_sparse_mod, psb_protect_name => psb_c_map_X2Y
implicit none
type(psb_clinmap_type), intent(in) :: map
complex(psb_spk_), intent(in) :: alpha,beta
complex(psb_spk_), intent(inout) :: x(:)
complex(psb_spk_), intent(out) :: y(:)
integer, intent(out) :: info
complex(psb_spk_), optional :: work(:)
!
complex(psb_spk_), allocatable :: xt(:), yt(:)
integer :: i, j, nr1, nc1,nr2, nc2,&
& map_kind, map_data, nr, ictxt
character(len=20), parameter :: name='psb_map_X2Y'
info = 0
if (.not.psb_is_asb_map(map)) then
write(0,*) trim(name),' Invalid descriptor input'
info = 1
return
end if
map_kind = psb_get_map_kind(map)
select case(map_kind)
case(psb_map_aggr_)
ictxt = psb_cd_get_context(map%p_desc_Y)
nr2 = psb_cd_get_global_rows(map%p_desc_Y)
nc2 = psb_cd_get_local_cols(map%p_desc_Y)
allocate(yt(nc2),stat=info)
if (info == 0) call psb_halo(x,map%p_desc_X,info,work=work)
if (info == 0) call psb_csmm(cone,map%map_X2Y,x,czero,yt,info)
if ((info == 0) .and. psb_is_repl_desc(map%p_desc_Y)) then
call psb_sum(ictxt,yt(1:nr2))
end if
if (info == 0) call psb_geaxpby(alpha,yt,beta,y,map%p_desc_Y,info)
if (info /= 0) then
write(0,*) trim(name),' Error from inner routines',info
info = -1
end if
case(psb_map_gen_linear_)
ictxt = psb_cd_get_context(map%desc_Y)
nr1 = psb_cd_get_local_rows(map%desc_X)
nc1 = psb_cd_get_local_cols(map%desc_X)
nr2 = psb_cd_get_global_rows(map%desc_Y)
nc2 = psb_cd_get_local_cols(map%desc_Y)
allocate(xt(nc1),yt(nc2),stat=info)
xt(1:nr1) = x(1:nr1)
if (info == 0) call psb_halo(xt,map%desc_X,info,work=work)
if (info == 0) call psb_csmm(cone,map%map_X2Y,xt,czero,yt,info)
if ((info == 0) .and. psb_is_repl_desc(map%desc_Y)) then
call psb_sum(ictxt,yt(1:nr2))
end if
if (info == 0) call psb_geaxpby(alpha,yt,beta,y,map%desc_Y,info)
if (info /= 0) then
write(0,*) trim(name),' Error from inner routines',info
info = -1
end if
case default
write(0,*) trim(name),' Invalid descriptor input'
info = 1
return
end select
end subroutine psb_c_map_X2Y
!
! Takes a vector x from space map%p_desc_Y and maps it onto
! map%p_desc_X under map%map_Y2X possibly with communication
! due to exch_bk_idx
!
subroutine psb_c_map_Y2X(alpha,x,beta,y,map,info,work)
use psb_sparse_mod, psb_protect_name => psb_c_map_Y2X
implicit none
type(psb_clinmap_type), intent(in) :: map
complex(psb_spk_), intent(in) :: alpha,beta
complex(psb_spk_), intent(inout) :: x(:)
complex(psb_spk_), intent(out) :: y(:)
integer, intent(out) :: info
complex(psb_spk_), optional :: work(:)
!
complex(psb_spk_), allocatable :: xt(:), yt(:)
integer :: i, j, nr1, nc1,nr2, nc2,&
& map_kind, map_data, nr, ictxt
character(len=20), parameter :: name='psb_map_Y2X'
info = 0
if (.not.psb_is_asb_map(map)) then
write(0,*) trim(name),' Invalid descriptor input'
info = 1
return
end if
map_kind = psb_get_map_kind(map)
select case(map_kind)
case(psb_map_aggr_)
ictxt = psb_cd_get_context(map%p_desc_X)
nr2 = psb_cd_get_global_rows(map%p_desc_X)
nc2 = psb_cd_get_local_cols(map%p_desc_X)
allocate(yt(nc2),stat=info)
if (info == 0) call psb_halo(x,map%p_desc_Y,info,work=work)
if (info == 0) call psb_csmm(cone,map%map_Y2X,x,czero,yt,info)
if ((info == 0) .and. psb_is_repl_desc(map%p_desc_X)) then
call psb_sum(ictxt,yt(1:nr2))
end if
if (info == 0) call psb_geaxpby(alpha,yt,beta,y,map%p_desc_X,info)
if (info /= 0) then
write(0,*) trim(name),' Error from inner routines',info
info = -1
end if
case(psb_map_gen_linear_)
ictxt = psb_cd_get_context(map%desc_X)
nr1 = psb_cd_get_local_rows(map%desc_Y)
nc1 = psb_cd_get_local_cols(map%desc_Y)
nr2 = psb_cd_get_global_rows(map%desc_X)
nc2 = psb_cd_get_local_cols(map%desc_X)
allocate(xt(nc1),yt(nc2),stat=info)
xt(1:nr1) = x(1:nr1)
if (info == 0) call psb_halo(xt,map%desc_Y,info,work=work)
if (info == 0) call psb_csmm(cone,map%map_Y2X,xt,czero,yt,info)
if ((info == 0) .and. psb_is_repl_desc(map%desc_X)) then
call psb_sum(ictxt,yt(1:nr2))
end if
if (info == 0) call psb_geaxpby(alpha,yt,beta,y,map%desc_X,info)
if (info /= 0) then
write(0,*) trim(name),' Error from inner routines',info
info = -1
end if
case default
write(0,*) trim(name),' Invalid descriptor input'
info = 1
return
end select
end subroutine psb_c_map_Y2X
!
! Takes a vector x from space map%p_desc_X and maps it onto
! map%p_desc_Y under map%map_X2Y possibly with communication
! due to exch_fw_idx
!
subroutine psb_z_map_X2Y(alpha,x,beta,y,map,info,work)
use psb_sparse_mod, psb_protect_name => psb_z_map_X2Y
implicit none
type(psb_zlinmap_type), intent(in) :: map
complex(psb_dpk_), intent(in) :: alpha,beta
complex(psb_dpk_), intent(inout) :: x(:)
complex(psb_dpk_), intent(out) :: y(:)
integer, intent(out) :: info
complex(psb_dpk_), optional :: work(:)
!
complex(psb_dpk_), allocatable :: xt(:), yt(:)
integer :: i, j, nr1, nc1,nr2, nc2,&
& map_kind, map_data, nr, ictxt
character(len=20), parameter :: name='psb_map_X2Y'
info = 0
if (.not.psb_is_asb_map(map)) then
write(0,*) trim(name),' Invalid descriptor input'
info = 1
return
end if
map_kind = psb_get_map_kind(map)
select case(map_kind)
case(psb_map_aggr_)
ictxt = psb_cd_get_context(map%p_desc_Y)
nr2 = psb_cd_get_global_rows(map%p_desc_Y)
nc2 = psb_cd_get_local_cols(map%p_desc_Y)
allocate(yt(nc2),stat=info)
if (info == 0) call psb_halo(x,map%p_desc_X,info,work=work)
if (info == 0) call psb_csmm(zone,map%map_X2Y,x,zzero,yt,info)
if ((info == 0) .and. psb_is_repl_desc(map%p_desc_Y)) then
call psb_sum(ictxt,yt(1:nr2))
end if
if (info == 0) call psb_geaxpby(alpha,yt,beta,y,map%p_desc_Y,info)
if (info /= 0) then
write(0,*) trim(name),' Error from inner routines',info
info = -1
end if
case(psb_map_gen_linear_)
ictxt = psb_cd_get_context(map%desc_Y)
nr1 = psb_cd_get_local_rows(map%desc_X)
nc1 = psb_cd_get_local_cols(map%desc_X)
nr2 = psb_cd_get_global_rows(map%desc_Y)
nc2 = psb_cd_get_local_cols(map%desc_Y)
allocate(xt(nc1),yt(nc2),stat=info)
xt(1:nr1) = x(1:nr1)
if (info == 0) call psb_halo(xt,map%desc_X,info,work=work)
if (info == 0) call psb_csmm(zone,map%map_X2Y,xt,zzero,yt,info)
if ((info == 0) .and. psb_is_repl_desc(map%desc_Y)) then
call psb_sum(ictxt,yt(1:nr2))
end if
if (info == 0) call psb_geaxpby(alpha,yt,beta,y,map%desc_Y,info)
if (info /= 0) then
write(0,*) trim(name),' Error from inner routines',info
info = -1
end if
case default
write(0,*) trim(name),' Invalid descriptor input'
info = 1
return
end select
end subroutine psb_z_map_X2Y
!
! Takes a vector x from space map%p_desc_Y and maps it onto
! map%p_desc_X under map%map_Y2X possibly with communication
! due to exch_bk_idx
!
subroutine psb_z_map_Y2X(alpha,x,beta,y,map,info,work)
use psb_sparse_mod, psb_protect_name => psb_z_map_Y2X
implicit none
type(psb_zlinmap_type), intent(in) :: map
complex(psb_dpk_), intent(in) :: alpha,beta
complex(psb_dpk_), intent(inout) :: x(:)
complex(psb_dpk_), intent(out) :: y(:)
integer, intent(out) :: info
complex(psb_dpk_), optional :: work(:)
!
complex(psb_dpk_), allocatable :: xt(:), yt(:)
integer :: i, j, nr1, nc1,nr2, nc2,&
& map_kind, map_data, nr, ictxt
character(len=20), parameter :: name='psb_map_Y2X'
info = 0
if (.not.psb_is_asb_map(map)) then
write(0,*) trim(name),' Invalid descriptor input'
info = 1
return
end if
map_kind = psb_get_map_kind(map)
select case(map_kind)
case(psb_map_aggr_)
ictxt = psb_cd_get_context(map%p_desc_X)
nr2 = psb_cd_get_global_rows(map%p_desc_X)
nc2 = psb_cd_get_local_cols(map%p_desc_X)
allocate(yt(nc2),stat=info)
if (info == 0) call psb_halo(x,map%p_desc_Y,info,work=work)
if (info == 0) call psb_csmm(zone,map%map_Y2X,x,zzero,yt,info)
if ((info == 0) .and. psb_is_repl_desc(map%p_desc_X)) then
call psb_sum(ictxt,yt(1:nr2))
end if
if (info == 0) call psb_geaxpby(alpha,yt,beta,y,map%p_desc_X,info)
if (info /= 0) then
write(0,*) trim(name),' Error from inner routines',info
info = -1
end if
case(psb_map_gen_linear_)
ictxt = psb_cd_get_context(map%desc_X)
nr1 = psb_cd_get_local_rows(map%desc_Y)
nc1 = psb_cd_get_local_cols(map%desc_Y)
nr2 = psb_cd_get_global_rows(map%desc_X)
nc2 = psb_cd_get_local_cols(map%desc_X)
allocate(xt(nc1),yt(nc2),stat=info)
xt(1:nr1) = x(1:nr1)
if (info == 0) call psb_halo(xt,map%desc_Y,info,work=work)
if (info == 0) call psb_csmm(zone,map%map_Y2X,xt,zzero,yt,info)
if ((info == 0) .and. psb_is_repl_desc(map%desc_X)) then
call psb_sum(ictxt,yt(1:nr2))
end if
if (info == 0) call psb_geaxpby(alpha,yt,beta,y,map%desc_X,info)
if (info /= 0) then
write(0,*) trim(name),' Error from inner routines',info
info = -1
end if
case default
write(0,*) trim(name),' Invalid descriptor input'
info = 1
return
end select
end subroutine psb_z_map_Y2X