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Moving files from PSBLAS2 to MLD2P4.

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psblas3-type-indexed
Salvatore Filippone 18 years ago
parent da3fd151d0
commit 5b1ca00cb4
1 changed files with 0 additions and 280 deletions
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mld2p4/psb_zbaseprc_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_zbaseprc_aply(alpha,prec,x,beta,y,desc_data,trans,work,info)
!
! Compute Y <- beta*Y + alpha*K^-1 X
! where K is a a basic preconditioner stored in prec
!
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, int_err(5)
complex(kind(1.d0)), pointer :: ww(:), aux(:), tx(:),ty(:)
character ::diagl, diagu
integer :: ictxt,np,me,i, isz, nrg, err_act
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
interface psb_bjac_aply
subroutine psb_zbjac_aply(alpha,prec,x,beta,y,desc_data,trans,work,info)
use psb_base_mod
use psb_prec_type
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
end subroutine psb_zbjac_aply
end interface
name='psb_zbaseprc_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
info=40
int_err(1)=6
ch_err(2:2)=trans
goto 9999
end select
select case(prec%iprcparm(p_type_))
case(noprec_)
call psb_geaxpby(alpha,x,beta,y,desc_data,info)
case(diagsc_)
if (size(work) >= size(x)) then
ww => work
else
allocate(ww(size(x)),stat=info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Allocate')
goto 9999
end if
end if
n_row=desc_data%matrix_data(psb_n_row_)
ww(1:n_row) = x(1:n_row)*prec%d(1:n_row)
call psb_geaxpby(alpha,ww,beta,y,desc_data,info)
if (size(work) < size(x)) then
deallocate(ww,stat=info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Deallocate')
goto 9999
end if
end if
case(bja_)
call psb_bjac_aply(alpha,prec,x,beta,y,desc_data,trans,work,info)
if(info.ne.0) then
info=4010
ch_err='psb_bjac_aply'
goto 9999
end if
case(asm_,ras_,ash_,rash_)
if (prec%iprcparm(n_ovr_)==0) then
! shortcut: this fixes performance for RAS(0) == BJA
call psb_bjac_aply(alpha,prec,x,beta,y,desc_data,trans,work,info)
if(info.ne.0) then
info=4010
ch_err='psb_bjacaply'
goto 9999
end if
else
! Note: currently trans is unused.
n_row=prec%desc_data%matrix_data(psb_n_row_)
n_col=prec%desc_data%matrix_data(psb_n_col_)
isz=max(n_row,N_COL)
if ((6*isz) <= size(work)) then
ww => work(1:isz)
tx => work(isz+1:2*isz)
ty => work(2*isz+1:3*isz)
aux => work(3*isz+1:)
else if ((4*isz) <= size(work)) then
aux => work(1:)
allocate(ww(isz),tx(isz),ty(isz),stat=info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Allocate')
goto 9999
end if
else if ((3*isz) <= size(work)) then
ww => work(1:isz)
tx => work(isz+1:2*isz)
ty => work(2*isz+1:3*isz)
allocate(aux(4*isz),stat=info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Allocate')
goto 9999
end if
else
allocate(ww(isz),tx(isz),ty(isz),&
&aux(4*isz),stat=info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Allocate')
goto 9999
end if
endif
if (debugprt) write(0,*)' vdiag: ',prec%d(:)
if (debug) write(0,*) 'Bi-CGSTAB with Additive Schwarz prec'
tx(1:desc_data%matrix_data(psb_n_row_)) = x(1:desc_data%matrix_data(psb_n_row_))
tx(desc_data%matrix_data(psb_n_row_)+1:isz) = zzero
if (prec%iprcparm(restr_)==psb_halo_) then
call psb_halo(tx,prec%desc_data,info,work=aux)
if(info /=0) then
info=4010
ch_err='psb_halo'
goto 9999
end if
else if (prec%iprcparm(restr_) /= psb_none_) then
write(0,*) 'Problem in PRC_APLY: Unknown value for restriction ',&
&prec%iprcparm(restr_)
end if
if (prec%iprcparm(iren_)>0) then
call zgelp('N',n_row,1,prec%perm,tx,isz,ww,isz,info)
if(info /=0) then
info=4010
ch_err='psb_zgelp'
goto 9999
end if
endif
call psb_bjac_aply(zone,prec,tx,zzero,ty,prec%desc_data,trans,aux,info)
if(info.ne.0) then
info=4010
ch_err='psb_bjac_aply'
goto 9999
end if
if (prec%iprcparm(iren_)>0) then
call zgelp('N',n_row,1,prec%invperm,ty,isz,ww,isz,info)
if(info /=0) then
info=4010
ch_err='psb_zgelp'
goto 9999
end if
endif
select case (prec%iprcparm(prol_))
case(psb_none_)
! Would work anyway, but since it's supposed to do nothing...
! call f90_psovrl(ty,prec%desc_data,update=prec%a_restrict)
case(psb_sum_,psb_avg_)
call psb_ovrl(ty,prec%desc_data,info,&
& update=prec%iprcparm(prol_),work=aux)
if(info /=0) then
info=4010
ch_err='psb_ovrl'
goto 9999
end if
case default
write(0,*) 'Problem in PRC_APLY: Unknown value for prolongation ',&
& prec%iprcparm(prol_)
end select
call psb_geaxpby(alpha,ty,beta,y,desc_data,info)
if ((6*isz) <= size(work)) then
else if ((4*isz) <= size(work)) then
deallocate(ww,tx,ty)
else if ((3*isz) <= size(work)) then
deallocate(aux)
else
deallocate(ww,aux,tx,ty)
endif
end if
case default
write(0,*) 'Invalid PRE%PREC ',prec%iprcparm(p_type_),':',&
& min_prec_,noprec_,diagsc_,bja_,&
& asm_,ras_,ash_,rash_
end select
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_zbaseprc_aply
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