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Moving files from PSBLAS2 to MLD2P4.

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psblas3-type-indexed
Salvatore Filippone 18 years ago
parent e277f6b99e
commit 6972bc720a
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mld2p4/psb_zbjac_aply.f90
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!!$
!!$
!!$ MD2P4
!!$ Multilevel Domain Decomposition Parallel Preconditioner Package for PSBLAS
!!$ for
!!$ Parallel Sparse BLAS v2.0
!!$ (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata
!!$ Alfredo Buttari University of Rome Tor Vergata
!!$ Daniela di Serafino Second University of Naples
!!$ Pasqua D'Ambra ICAR-CNR
!!$
!!$ 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 MD2P4 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 MD2P4 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_zbjac_aply(alpha,prec,x,beta,y,desc_data,trans,work,info)
!
! Compute Y <- beta*Y + alpha*K^-1 X
! where K is a a Block Jacobi preconditioner stored in prec
! Note that desc_data may or may not be the same as prec%desc_data,
! but since both are INTENT(IN) this should be legal.
!
use psb_base_mod
use psb_prec_type
implicit none
type(psb_desc_type), intent(in) :: desc_data
type(psb_zbaseprc_type), intent(in) :: prec
complex(kind(0.d0)),intent(inout) :: x(:), y(:)
complex(kind(0.d0)),intent(in) :: alpha,beta
character(len=1) :: trans
complex(kind(0.d0)),target :: work(:)
integer, intent(out) :: info
! Local variables
integer :: n_row,n_col
complex(kind(1.d0)), pointer :: ww(:), aux(:), tx(:),ty(:),tb(:)
character ::diagl, diagu
integer :: ictxt,np,me,i, isz, nrg, err_act, int_err(5)
real(kind(1.d0)) :: t1, t2, t3, t4, t5, t6, t7, mpi_wtime
logical,parameter :: debug=.false., debugprt=.false.
external mpi_wtime
character(len=20) :: name, ch_err
name='psb_bjac_aply'
info = 0
call psb_erractionsave(err_act)
ictxt=desc_data%matrix_data(psb_ctxt_)
call psb_info(ictxt, me, np)
diagl='U'
diagu='U'
select case(trans)
case('N','n')
case('T','t','C','c')
case default
call psb_errpush(40,name)
goto 9999
end select
n_row=desc_data%matrix_data(psb_n_row_)
n_col=desc_data%matrix_data(psb_n_col_)
if (n_col <= size(work)) then
ww => work(1:n_col)
if ((4*n_col+n_col) <= size(work)) then
aux => work(n_col+1:)
else
allocate(aux(4*n_col),stat=info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Allocate')
goto 9999
end if
endif
else
allocate(ww(n_col),aux(4*n_col),stat=info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Allocate')
goto 9999
end if
endif
if (prec%iprcparm(jac_sweeps_) == 1) then
select case(prec%iprcparm(f_type_))
case(f_ilu_n_,f_ilu_e_)
select case(trans)
case('N','n')
call psb_spsm(zone,prec%av(l_pr_),x,zzero,ww,desc_data,info,&
& trans='N',unit=diagl,choice=psb_none_,work=aux)
if(info /=0) goto 9999
ww(1:n_row) = ww(1:n_row)*prec%d(1:n_row)
call psb_spsm(alpha,prec%av(u_pr_),ww,beta,y,desc_data,info,&
& trans='N',unit=diagu,choice=psb_none_, work=aux)
if(info /=0) goto 9999
case('T','t','C','c')
call psb_spsm(zone,prec%av(u_pr_),x,zzero,ww,desc_data,info,&
& trans=trans,unit=diagu,choice=psb_none_, work=aux)
if(info /=0) goto 9999
ww(1:n_row) = ww(1:n_row)*prec%d(1:n_row)
call psb_spsm(alpha,prec%av(l_pr_),ww,beta,y,desc_data,info,&
& trans=trans,unit=diagl,choice=psb_none_,work=aux)
if(info /=0) goto 9999
end select
case(f_slu_)
ww(1:n_row) = x(1:n_row)
select case(trans)
case('N','n')
call psb_zslu_solve(0,n_row,1,ww,n_row,prec%iprcparm(slu_ptr_),info)
case('T','t','C','c')
call psb_zslu_solve(1,n_row,1,ww,n_row,prec%iprcparm(slu_ptr_),info)
end select
if(info /=0) goto 9999
call psb_geaxpby(alpha,ww,beta,y,desc_data,info)
case (f_umf_)
select case(trans)
case('N','n')
call psb_zumf_solve(0,n_row,ww,x,n_row,prec%iprcparm(umf_numptr_),info)
case('T','t','C','c')
call psb_zumf_solve(1,n_row,ww,x,n_row,prec%iprcparm(umf_numptr_),info)
end select
if(info /=0) goto 9999
call psb_geaxpby(alpha,ww,beta,y,desc_data,info)
case default
write(0,*) 'Unknown factorization type in bjac_aply',prec%iprcparm(f_type_)
end select
if (debugprt) write(0,*)' Y: ',y(:)
else if (prec%iprcparm(jac_sweeps_) > 1) then
! Note: we have to add TRANS to this one !!!!!!!!!
if (size(prec%av) < ap_nd_) then
info = 4011
goto 9999
endif
allocate(tx(n_col),ty(n_col),stat=info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Allocate')
goto 9999
end if
tx = zzero
ty = zzero
select case(prec%iprcparm(f_type_))
case(f_ilu_n_,f_ilu_e_)
do i=1, prec%iprcparm(jac_sweeps_)
! X(k+1) = M^-1*(b-N*X(k))
ty(1:n_row) = x(1:n_row)
call psb_spmm(-zone,prec%av(ap_nd_),tx,zone,ty,&
& prec%desc_data,info,work=aux)
if(info /=0) goto 9999
call psb_spsm(zone,prec%av(l_pr_),ty,zzero,ww,&
& prec%desc_data,info,&
& trans='N',unit='U',choice=psb_none_,work=aux)
if(info /=0) goto 9999
ww(1:n_row) = ww(1:n_row)*prec%d(1:n_row)
call psb_spsm(zone,prec%av(u_pr_),ww,zzero,tx,&
& prec%desc_data,info,&
& trans='N',unit='U',choice=psb_none_,work=aux)
if(info /=0) goto 9999
end do
case(f_slu_)
do i=1, prec%iprcparm(jac_sweeps_)
! X(k+1) = M^-1*(b-N*X(k))
ty(1:n_row) = x(1:n_row)
call psb_spmm(-zone,prec%av(ap_nd_),tx,zone,ty,&
& prec%desc_data,info,work=aux)
if(info /=0) goto 9999
call psb_zslu_solve(0,n_row,1,ty,n_row,prec%iprcparm(slu_ptr_),info)
if(info /=0) goto 9999
tx(1:n_row) = ty(1:n_row)
end do
case(f_umf_)
do i=1, prec%iprcparm(jac_sweeps_)
! X(k+1) = M^-1*(b-N*X(k))
ty(1:n_row) = x(1:n_row)
call psb_spmm(-zone,prec%av(ap_nd_),tx,zone,ty,&
& prec%desc_data,info,work=aux)
if(info /=0) goto 9999
call psb_zumf_solve(0,n_row,ww,ty,n_row,&
& prec%iprcparm(umf_numptr_),info)
if(info /=0) goto 9999
tx(1:n_row) = ww(1:n_row)
end do
end select
call psb_geaxpby(alpha,tx,beta,y,desc_data,info)
deallocate(tx,ty)
else
goto 9999
endif
if (n_col <= size(work)) then
if ((4*n_col+n_col) <= size(work)) then
else
deallocate(aux)
endif
else
deallocate(ww,aux)
endif
call psb_erractionrestore(err_act)
return
9999 continue
call psb_errpush(info,name,i_err=int_err,a_err=ch_err)
call psb_erractionrestore(err_act)
if (err_act.eq.act_abort) then
call psb_error()
return
end if
return
end subroutine psb_zbjac_aply
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