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psblas3/base/psblas/psb_cspsm.f90

569 lines
16 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.
!!$
!!$
! File: psb_cspsm.f90
!
! Subroutine: psb_cspsm
! Performs one of the distributed matrix-vector operations
!
! sub( Y ) := alpha * Pr * A-1 * Pc *sub( X ) + beta * sub (Y ), or
!
! sub( Y ) := alpha * D * Pr * A-1 * Pc * sub( X ) + beta * sub (Y ), or
!
! sub( Y ) := alpha * Pr * A-1 * Pc * D * sub( X ) + beta * sub (Y ), or
!
! sub( Y ) := alpha * Pr * A-T * Pc * sub( X ) + beta * sub (Y ), or
!
! sub( Y ) := alpha * D * Pr * A-T * Pc * sub( X ) + beta * sub (Y ), or
!
! sub( Y ) := alpha * Pr * A-T * Pc * D * sub( X ) + beta * sub (Y ), or
!
! where :
!
! sub( X ) denotes X(1:M,JX:JX+K-1),
!
! sub( Y ) denotes Y(1:M,JY:JY+K-1).
!
! sub( X ) is a distributed
! vector and T is a M-by-M distributed triangular matrix.
!
! Arguments:
! alpha - complex. The scalar alpha.
! a - type(psb_cspmat_type). The sparse matrix containing A.
! x(:,:) - complex The input vector containing the entries of ( X ).
! beta - complex The scalar beta.
! y(:,:) - complex The input vector containing the entries of ( Y ).
! desc_a - type(psb_desc_type). The communication descriptor.
! info - integer. Return code
! trans - character(optional). Whether A or A'. If not present 'N' is assumed.
! unitd - character(optional). Specify some type of operation with
! the diagonal matrix D.
! choice - integer(optional). The kind of update to perform on overlap elements.
! d(:) - complex, optional Matrix for diagonal scaling.
! k - integer(optional). The number of right-hand sides.
! jx - integer(optional). The column offset for ( X ). Default: 1
! jy - integer(optional). The column offset for ( Y ). Default: 1
! work(:) - complex, optional Working area.
!
subroutine psb_cspsm(alpha,a,x,beta,y,desc_a,info,&
& trans, unitd, choice, diag, k, jx, jy, work)
use psb_spmat_type
use psb_serial_mod
use psb_descriptor_type
use psb_comm_mod
use psi_mod
use psb_check_mod
use psb_error_mod
use psb_string_mod
use psb_penv_mod
implicit none
complex(psb_spk_), intent(in) :: alpha, beta
complex(psb_spk_), intent(in), target :: x(:,:)
complex(psb_spk_), intent(inout), target :: y(:,:)
type (psb_cspmat_type), intent(in) :: a
type(psb_desc_type), intent(in) :: desc_a
integer, intent(out) :: info
complex(psb_spk_), intent(in), optional, target :: diag(:)
complex(psb_spk_), optional, target :: work(:)
character, intent(in), optional :: trans, unitd
integer, intent(in), optional :: choice
integer, intent(in), optional :: k, jx, jy
! locals
integer :: ictxt, np, me,&
& err_act, iix, jjx, ia, ja, iia, jja, lldx,lldy, choice_,&
& ix, iy, ik, ijx, ijy, i, lld,&
& m, nrow, ncol, liwork, llwork, iiy, jjy, idx, ndm
character :: lunitd
integer, parameter :: nb=4
complex(psb_spk_),pointer :: iwork(:), xp(:,:), yp(:,:), id(:)
character :: itrans
character(len=20) :: name, ch_err
logical :: aliw
name='psb_cspsm'
if(psb_get_errstatus() /= 0) return
info=0
call psb_erractionsave(err_act)
ictxt=psb_cd_get_context(desc_a)
call psb_info(ictxt, me, np)
if (np == -1) then
info = 2010
call psb_errpush(info,name)
goto 9999
endif
! just this case right now
ia = 1
ja = 1
ix = 1
if (present(jx)) then
ijx = jx
else
ijx = 1
endif
iy = 1
if (present(jy)) then
ijy = jy
else
ijy = 1
endif
if (present(k)) then
ik = min(k,size(x,2)-ijx+1)
ik = min(ik,size(y,2)-ijy+1)
else
ik = min(size(x,2)-ijx+1,size(y,2)-ijy+1)
endif
if (present(choice)) then
choice_ = choice
else
choice_ = psb_avg_
endif
if (present(unitd)) then
lunitd = psb_toupper(unitd)
else
lunitd = 'U'
endif
if (present(trans)) then
itrans = psb_toupper(trans)
if((itrans == 'N').or.(itrans == 'T').or. (itrans == 'C')) then
! OK
else
info = 70
call psb_errpush(info,name)
goto 9999
end if
else
itrans = 'N'
endif
m = psb_cd_get_global_rows(desc_a)
nrow = psb_cd_get_local_rows(desc_a)
ncol = psb_cd_get_local_cols(desc_a)
lldx = size(x,1)
lldy = size(y,1)
if((lldx < ncol).or.(lldy < ncol)) then
info=3010
call psb_errpush(info,name)
goto 9999
end if
! check for presence/size of a work area
iwork => null()
liwork= 2*ncol
if (a%pr(1) /= 0) llwork = liwork + m * ik
if (a%pl(1) /= 0) llwork = llwork + m * ik
if (present(work)) then
if (size(work) >= liwork) then
aliw =.false.
else
aliw=.true.
endif
else
aliw=.true.
end if
if (aliw) then
allocate(iwork(liwork),stat=info)
if(info /= 0) then
info=4010
ch_err='psb_realloc'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
else
iwork => work
endif
iwork(1)=0.d0
if(present(diag)) then
lld = size(diag)
id => diag
else
lld=1
allocate(id(1))
id=1.d0
end if
! checking for matrix correctness
call psb_chkmat(m,m,ia,ja,desc_a,info,iia,jja)
! checking for vectors correctness
if (info == 0) &
& call psb_chkvect(m,ik,size(x,1),ix,ijx,desc_a,info,iix,jjx)
if (info == 0) &
& call psb_chkvect(m,ik,size(y,1),iy,ijy,desc_a,info,iiy,jjy)
if(info /= 0) then
info=4010
ch_err='psb_chkvect/mat'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
if(ja /= ix) then
! this case is not yet implemented
info = 3030
end if
if((iix /= 1).or.(iiy /= 1)) then
! this case is not yet implemented
info = 3040
end if
if(info /= 0) then
call psb_errpush(info,name)
goto 9999
end if
! Perform local triangular system solve
xp => x(iix:lldx,jjx:jjx+ik-1)
yp => y(iiy:lldy,jjy:jjy+ik-1)
call a%cssm(alpha,xp,beta,yp,info,unitd=lunitd,d=id,trans=itrans)
if(info /= 0) then
info = 4010
ch_err='zcssm'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
! update overlap elements
if (choice_ > 0) then
call psi_swapdata(ior(psb_swap_send_,psb_swap_recv_),ik,&
& cone,yp,desc_a,iwork,info,data=psb_comm_ovr_)
if (info == 0) call psi_ovrl_upd(yp,desc_a,choice_,info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Inner updates')
goto 9999
end if
end if
if(aliw) deallocate(iwork)
if(.not.present(diag)) deallocate(id)
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act == psb_act_abort_) then
call psb_error(ictxt)
return
end if
return
end subroutine psb_cspsm
!!$
!!$ 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_cspsv
! Performs one of the distributed matrix-vector operations
!
! Y := alpha * Pr * A-1 * Pc * X + beta * Y, or
!
! Y := alpha * D * Pr * A-1 * Pc * X + beta * Y, or
!
! Y := alpha * Pr * A-1 * Pc * D * X + beta * Y, or
!
! Y := alpha * Pr * A-T * Pc * X + beta * Y, or
!
! Y := alpha * D * Pr * A-T * Pc * X + beta * Y, or
!
! Y := alpha * Pr * A-T * Pc * D * X + beta * Y, or
!
! X is a distributed
! vector and T is a M-by-M distributed triangular matrix.
!
!
! Arguments:
! alpha - complex. The scalar alpha.
! a - type(psb_cspmat_type). The sparse matrix containing A.
! x(:) - complex The input vector containing the entries of ( X ).
! beta - complex The scalar beta.
! y(:) - complex The input vector containing the entries of ( Y ).
! desc_a - type(psb_desc_type). The communication descriptor.
! info - integer. Return code
! trans - character(optional). Whether A or A'. If not present 'N' is assumed.
! unitd - character(optional). Specify some type of operation with
! the diagonal matrix D.
! choice - integer(optional). The kind of update to perform on overlap elements.
! d(:) - complex, optional Matrix for diagonal scaling.
! work(:) - complex, optional Working area.
!
subroutine psb_cspsv(alpha,a,x,beta,y,desc_a,info,&
& trans, unitd, choice, diag, work)
use psb_spmat_type
use psb_serial_mod
use psb_descriptor_type
use psb_comm_mod
use psi_mod
use psb_check_mod
use psb_error_mod
use psb_string_mod
use psb_penv_mod
implicit none
complex(psb_spk_), intent(in) :: alpha, beta
complex(psb_spk_), intent(in), target :: x(:)
complex(psb_spk_), intent(inout), target :: y(:)
type(psb_cspmat_type), intent(in) :: a
type(psb_desc_type), intent(in) :: desc_a
integer, intent(out) :: info
complex(psb_spk_), intent(in), optional, target :: diag(:)
complex(psb_spk_), optional, target :: work(:)
character, intent(in), optional :: trans, unitd
integer, intent(in), optional :: choice
! locals
integer :: ictxt, np, me, &
& err_act, iix, jjx, ia, ja, iia, jja, lldx,lldy, choice_,&
& ix, iy, ik, jx, jy, i, lld,&
& m, nrow, ncol, liwork, llwork, iiy, jjy, idx, ndm
character :: lunitd
integer, parameter :: nb=4
complex(psb_spk_),pointer :: iwork(:), xp(:), yp(:), id(:)
character :: itrans
character(len=20) :: name, ch_err
logical :: aliw
name='psb_cspsv'
if(psb_get_errstatus() /= 0) return
info=0
call psb_erractionsave(err_act)
ictxt=psb_cd_get_context(desc_a)
call psb_info(ictxt, me, np)
if (np == -1) then
info = 2010
call psb_errpush(info,name)
goto 9999
endif
! just this case right now
ia = 1
ja = 1
ix = 1
iy = 1
ik = 1
jx= 1
jy= 1
if (present(choice)) then
choice_ = choice
else
choice_ = psb_avg_
endif
if (present(unitd)) then
lunitd = psb_toupper(unitd)
else
lunitd = 'U'
endif
if (present(trans)) then
itrans = psb_toupper(trans)
if((itrans == 'N').or.(itrans == 'T').or.(itrans == 'C')) then
! Ok
else
info = 70
call psb_errpush(info,name)
goto 9999
end if
else
itrans = 'N'
endif
m = psb_cd_get_global_rows(desc_a)
nrow = psb_cd_get_local_rows(desc_a)
ncol = psb_cd_get_local_cols(desc_a)
lldx = size(x)
lldy = size(y)
if((lldx < ncol).or.(lldy < ncol)) then
info=3010
call psb_errpush(info,name)
goto 9999
end if
iwork => null()
! check for presence/size of a work area
liwork= 2*ncol
if (present(work)) then
if (size(work) >= liwork) then
aliw =.false.
else
aliw=.true.
endif
else
aliw=.true.
end if
if (aliw) then
allocate(iwork(liwork),stat=info)
if(info /= 0) then
info=4010
ch_err='psb_realloc'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
else
iwork => work
endif
iwork(1)=0.d0
if(present(diag)) then
lld = size(diag)
id => diag
else
lld=1
allocate(id(1))
id=1.d0
end if
! checking for matrix correctness
call psb_chkmat(m,m,ia,ja,desc_a,info,iia,jja)
! checking for vectors correctness
if (info == 0) &
& call psb_chkvect(m,ik,size(x),ix,jx,desc_a,info,iix,jjx)
if (info == 0) &
& call psb_chkvect(m,ik,size(y),iy,jy,desc_a,info,iiy,jjy)
if(info /= 0) then
info=4010
ch_err='psb_chkvect/mat'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
if(ja /= ix) then
! this case is not yet implemented
info = 3030
end if
if((iix /= 1).or.(iiy /= 1)) then
! this case is not yet implemented
info = 3040
end if
if(info /= 0) then
call psb_errpush(info,name)
goto 9999
end if
! Perform local triangular system solve
xp => x(iix:lldx)
yp => y(iiy:lldy)
call a%cssm(alpha,xp,beta,yp,info,unitd=lunitd,d=id,trans=itrans)
if(info /= 0) then
info = 4010
ch_err='dcssm'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
! update overlap elements
if(choice_ > 0) then
call psi_swapdata(ior(psb_swap_send_,psb_swap_recv_),&
& cone,yp,desc_a,iwork,info,data=psb_comm_ovr_)
if (info == 0) call psi_ovrl_upd(yp,desc_a,choice_,info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Inner updates')
goto 9999
end if
end if
if (aliw) deallocate(iwork)
if(.not.present(diag)) deallocate(id)
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act == psb_act_abort_) then
call psb_error(ictxt)
return
end if
return
end subroutine psb_cspsv