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Krylov iterations:

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Centralized check convergence routines, with some fixes for RGMRES.
psblas3-type-indexed
Salvatore Filippone 17 years ago
parent 649e356750
commit 9a58493988
10 changed files with 104 additions and 160 deletions
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2
krylov/psb_dbicg.f90
Unescape Escape View File

@ -215,7 +215,7 @@ subroutine psb_dbicg(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop)
itx = 0 itx = 0
call psb_init_conv(methdname,istop_,itrace_,a,b,eps,desc_a,stopdat,info) call psb_init_conv(methdname,istop_,itrace_,itmax_,a,b,eps,desc_a,stopdat,info)
if (info /= 0) Then if (info /= 0) Then
call psb_errpush(4011,name) call psb_errpush(4011,name)
goto 9999 goto 9999

2
krylov/psb_dcg.f90
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@ -202,7 +202,7 @@ subroutine psb_dcg(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop)
rho = dzero rho = dzero
call psb_init_conv(methdname,istop_,itrace_,a,b,eps,desc_a,stopdat,info) call psb_init_conv(methdname,istop_,itrace_,itmax_,a,b,eps,desc_a,stopdat,info)
if (info /= 0) Then if (info /= 0) Then
call psb_errpush(4011,name) call psb_errpush(4011,name)
goto 9999 goto 9999

3
krylov/psb_dcgs.f90
Unescape Escape View File

@ -192,8 +192,7 @@ Subroutine psb_dcgs(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop)
itx = 0 itx = 0
call psb_init_conv(methdname,istop_,itrace_,itmax_,a,b,eps,desc_a,stopdat,info)
call psb_init_conv(methdname,istop_,itrace_,a,b,eps,desc_a,stopdat,info)
if (info /= 0) Then if (info /= 0) Then
call psb_errpush(4011,name) call psb_errpush(4011,name)
goto 9999 goto 9999

2
krylov/psb_dcgstab.F90
Unescape Escape View File

@ -223,7 +223,7 @@ Subroutine psb_dcgstab(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop)
call psb_set_coher(ictxt,isvch) call psb_set_coher(ictxt,isvch)
itx = 0 itx = 0
call psb_init_conv(methdname,istop_,itrace_,a,b,eps,desc_a,stopdat,info) call psb_init_conv(methdname,istop_,itrace_,itmax_,a,b,eps,desc_a,stopdat,info)
if (info /= 0) Then if (info /= 0) Then
call psb_errpush(4011,name) call psb_errpush(4011,name)
goto 9999 goto 9999

10
krylov/psb_dcgstabl.f90
Unescape Escape View File

@ -124,7 +124,7 @@ Subroutine psb_dcgstabl(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,irst,is
Real(Kind(1.d0)), Pointer :: ww(:), q(:), r(:), rt0(:), p(:), v(:), & Real(Kind(1.d0)), Pointer :: ww(:), q(:), r(:), rt0(:), p(:), v(:), &
& s(:), t(:), z(:), f(:), gamma(:), gamma1(:), gamma2(:), taum(:,:), sigma(:) & s(:), t(:), z(:), f(:), gamma(:), gamma1(:), gamma2(:), taum(:,:), sigma(:)
Integer :: litmax, naux, mglob, it, itrace_,& Integer :: itmax_, naux, mglob, it, itrace_,&
& np,me, n_row, n_col, nl, err_act & np,me, n_row, n_col, nl, err_act
Logical, Parameter :: exchange=.True., noexchange=.False. Logical, Parameter :: exchange=.True., noexchange=.False.
Integer, Parameter :: irmax = 8 Integer, Parameter :: irmax = 8
@ -160,9 +160,9 @@ Subroutine psb_dcgstabl(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,irst,is
endif endif
if (present(itmax)) then if (present(itmax)) then
litmax = itmax itmax_ = itmax
else else
litmax = 1000 itmax_ = 1000
endif endif
if (present(itrace)) then if (present(itrace)) then
@ -234,7 +234,7 @@ Subroutine psb_dcgstabl(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,irst,is
call psb_set_coher(ictxt,isvch) call psb_set_coher(ictxt,isvch)
call psb_init_conv(methdname,istop_,itrace_,a,b,eps,desc_a,stopdat,info) call psb_init_conv(methdname,istop_,itrace_,itmax_,a,b,eps,desc_a,stopdat,info)
if (info /= 0) Then if (info /= 0) Then
call psb_errpush(4011,name) call psb_errpush(4011,name)
goto 9999 goto 9999
@ -247,7 +247,7 @@ Subroutine psb_dcgstabl(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,irst,is
!!$ !!$
if (debug_level >= psb_debug_ext_) & if (debug_level >= psb_debug_ext_) &
& write(debug_unit,*) me,' ',trim(name),' restart: ',itx,it & write(debug_unit,*) me,' ',trim(name),' restart: ',itx,it
if (itx >= litmax) exit restart if (itx >= itmax_) exit restart
it = 0 it = 0
call psb_geaxpby(done,b,dzero,r,desc_a,info) call psb_geaxpby(done,b,dzero,r,desc_a,info)

13
krylov/psb_drgmres.f90
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@ -254,6 +254,7 @@ subroutine psb_drgmres(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,irst,ist
call psb_errpush(info,name) call psb_errpush(info,name)
goto 9999 goto 9999
end if end if
if ((itrace_ > 0).and.(me==0)) call log_header(methdname)
itx = 0 itx = 0
restart: do restart: do
@ -452,17 +453,7 @@ subroutine psb_drgmres(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,irst,ist
if (itrace_ > 0) & if (itrace_ > 0) &
& call log_conv(methdname,me,itx,1,errnum,errden,eps) & call log_conv(methdname,me,itx,1,errnum,errden,eps)
if (present(err)) then call log_end(methdname,me,itx,errnum,errden,eps,err=err,iter=iter)
if (errden /= dzero) then
err = errnum/errden
else
err = errnum
end if
end if
if (present(iter)) iter = itx
if (errnum > eps*errden) &
& call end_log(methdname,me,itx,errnum,errden,eps)
deallocate(aux,h,c,s,rs,rst, stat=info) deallocate(aux,h,c,s,rs,rst, stat=info)
if (info == 0) call psb_gefree(v,desc_a,info) if (info == 0) call psb_gefree(v,desc_a,info)

204
krylov/psb_krylov_mod.f90
Unescape Escape View File

@ -209,7 +209,7 @@ Module psb_krylov_mod
integer, parameter, private :: bni_=1, rni_=2, ani_=3, xni_=4, bn2_=5, xn2_=6 integer, parameter, private :: bni_=1, rni_=2, ani_=3, xni_=4, bn2_=5, xn2_=6
integer, parameter, private :: errnum_=7, errden_=8, eps_=9, rn2_=10 integer, parameter, private :: errnum_=7, errden_=8, eps_=9, rn2_=10
integer, parameter, private :: stopc_=1, trace_=2 integer, parameter, private :: stopc_=1, trace_=2, itmax_=3
integer, parameter, private :: ivsz_=16 integer, parameter, private :: ivsz_=16
type psb_itconv_type type psb_itconv_type
private private
@ -448,51 +448,87 @@ contains
end subroutine psb_zkrylov end subroutine psb_zkrylov
subroutine log_conv(methdname,me,itx,itrace,errnum,errden,eps) subroutine log_header(methdname)
use psb_base_mod use psb_base_mod
character(len=*), intent(in) :: methdname implicit none
integer, intent(in) :: me, itx, itrace character(len=*), intent(in) :: methdname
real(kind(1.d0)), intent(in) :: errnum, errden, eps character(len=*), parameter :: fmt='(a18,1x,a4,3(2x,a10))'
character(len=*), parameter :: fmt='(a,i4,3(2x,es10.4))' integer, parameter :: outlen=18
character(len=len(methdname)) :: mname
character(len=outlen) :: outname
mname = adjustl(trim(methdname))
write(outname,'(a)') mname(1:min(len_trim(mname),outlen-1))//':'
write(*,fmt) adjustl(outname),'Iter','Conv. Ind.','Epsilon'
if (me == 0) then end subroutine log_header
subroutine log_conv(methdname,me,itx,itrace,errnum,errden,eps)
use psb_base_mod
implicit none
character(len=*), intent(in) :: methdname
integer, intent(in) :: me, itx, itrace
real(kind(1.d0)), intent(in) :: errnum, errden, eps
character(len=*), parameter :: fmt='(a18,1x,i4,3(2x,es10.4))'
integer, parameter :: outlen=18
character(len=len(methdname)) :: mname
character(len=outlen) :: outname
if ((mod(itx,itrace) == 0).and.(me==0)) then
mname = adjustl(trim(methdname))
write(outname,'(a)') mname(1:min(len_trim(mname),outlen-1))//':'
if (errden > dzero ) then if (errden > dzero ) then
write(*,fmt) methdname//': ',itx,errnum/errden,eps write(*,fmt) adjustl(outname),itx,errnum/errden,eps
else else
write(*,fmt) methdname//': ',itx,errnum,eps write(*,fmt) adjustl(outname),itx,errnum,eps
end if end if
Endif endif
end subroutine log_conv end subroutine log_conv
subroutine end_log(methdname,me,itx,errnum,errden,eps) subroutine log_end(methdname,me,it,errnum,errden,eps,err,iter)
use psb_base_mod use psb_base_mod
implicit none
character(len=*), intent(in) :: methdname character(len=*), intent(in) :: methdname
integer, intent(in) :: me, itx integer, intent(in) :: me, it
real(kind(1.d0)), intent(in) :: errnum, errden, eps real(kind(1.d0)), intent(in) :: errnum, errden, eps
real(kind(1.d0)), optional, intent(out) :: err
integer, optional, intent(out) :: iter
character(len=*), parameter :: fmt='(a,2x,es10.4,1x,a,1x,i4,1x,a)' character(len=*), parameter :: fmt='(a,2x,es10.4,1x,a,1x,i4,1x,a)'
character(len=*), parameter :: fmt1='(a,3(2x,es10.4))' character(len=*), parameter :: fmt1='(a,3(2x,es10.4))'
if (me==0) then if (errden == dzero) then
write(*,fmt) methdname//' failed to converge to ',eps,& if (errnum > eps) then
& ' in ',ITX,' iterations. ' if (me==0) then
if (errden > dzero) then write(*,fmt) trim(methdname)//' failed to converge to ',eps,&
write(*,fmt1) 'Last iteration convergence indicator: ',& & ' in ',it,' iterations. '
& errnum/errden write(*,fmt1) 'Last iteration convergence indicator: ',&
else & errnum
write(*,fmt1) 'Last iteration convergence indicator: ',& end if
& errnum/errden end if
if (present(err)) err=errnum
else
if (errnum/errden > eps) then
if (me==0) then
write(*,fmt) trim(methdname)//' failed to converge to ',eps,&
& ' in ',it,' iterations. '
write(*,fmt1) 'Last iteration convergence indicator: ',&
& errnum/errden
end if
endif endif
if (present(err)) err=errnum/errden
end if end if
end subroutine end_log if (present(iter)) iter = it
end subroutine log_end
subroutine psb_d_init_conv(methdname,stopc,trace,a,b,eps,desc_a,stopdat,info) subroutine psb_d_init_conv(methdname,stopc,trace,itmax,a,b,eps,desc_a,stopdat,info)
use psb_base_mod use psb_base_mod
implicit none implicit none
character(len=*), intent(in) :: methdname character(len=*), intent(in) :: methdname
integer, intent(in) :: stopc, trace integer, intent(in) :: stopc, trace,itmax
type(psb_dspmat_type), intent(in) :: a type(psb_dspmat_type), intent(in) :: a
real(kind(1.d0)), intent(in) :: b(:), eps real(kind(1.d0)), intent(in) :: b(:), eps
type(psb_desc_type), intent(in) :: desc_a type(psb_desc_type), intent(in) :: desc_a
@ -500,10 +536,6 @@ contains
integer, intent(out) :: info integer, intent(out) :: info
integer :: ictxt, me, np, err_act integer :: ictxt, me, np, err_act
character(len=*), parameter :: fmt='(a18,1x,A4,3(2x,A10))'
integer, parameter :: outlen=18
character(len=len(methdname)) :: mname
character(len=outlen) :: outname
character(len=20) :: name character(len=20) :: name
info = 0 info = 0
@ -520,6 +552,7 @@ contains
stopdat%controls(stopc_) = stopc stopdat%controls(stopc_) = stopc
stopdat%controls(trace_) = trace stopdat%controls(trace_) = trace
stopdat%controls(itmax_) = itmax
select case(stopdat%controls(stopc_)) select case(stopdat%controls(stopc_))
case (1) case (1)
@ -543,13 +576,9 @@ contains
stopdat%values(errnum_) = dzero stopdat%values(errnum_) = dzero
stopdat%values(errden_) = done stopdat%values(errden_) = done
if (stopdat%controls(trace_) > 0) then if ((stopdat%controls(trace_) > 0).and. (me == 0))&
if (me == 0) then & call log_header(methdname)
mname = adjustl(trim(methdname))
write(outname,'(a)') mname(1:min(len_trim(mname),outlen-1))//':'
write(*,fmt) adjustl(outname),'Iter','Conv. Ind.','Epsilon'
endif
end if
call psb_erractionrestore(err_act) call psb_erractionrestore(err_act)
return return
@ -562,11 +591,11 @@ contains
end subroutine psb_d_init_conv end subroutine psb_d_init_conv
subroutine psb_z_init_conv(methdname,stopc,trace,a,b,eps,desc_a,stopdat,info) subroutine psb_z_init_conv(methdname,stopc,trace,itmax,a,b,eps,desc_a,stopdat,info)
use psb_base_mod use psb_base_mod
implicit none implicit none
character(len=*), intent(in) :: methdname character(len=*), intent(in) :: methdname
integer, intent(in) :: stopc, trace integer, intent(in) :: stopc, trace, itmax
type(psb_zspmat_type), intent(in) :: a type(psb_zspmat_type), intent(in) :: a
complex(kind(1.d0)), intent(in) :: b(:) complex(kind(1.d0)), intent(in) :: b(:)
real(kind(1.d0)), intent(in) :: eps real(kind(1.d0)), intent(in) :: eps
@ -575,10 +604,6 @@ contains
integer, intent(out) :: info integer, intent(out) :: info
integer :: ictxt, me, np, err_act integer :: ictxt, me, np, err_act
character(len=*), parameter :: fmt='(a18,1x,A4,3(2x,A10))'
integer, parameter :: outlen=18
character(len=len(methdname)) :: mname
character(len=outlen) :: outname
character(len=20) :: name character(len=20) :: name
info = 0 info = 0
@ -595,6 +620,7 @@ contains
stopdat%controls(stopc_) = stopc stopdat%controls(stopc_) = stopc
stopdat%controls(trace_) = trace stopdat%controls(trace_) = trace
stopdat%controls(itmax_) = itmax
select case(stopdat%controls(stopc_)) select case(stopdat%controls(stopc_))
case (1) case (1)
@ -618,14 +644,9 @@ contains
stopdat%values(errnum_) = dzero stopdat%values(errnum_) = dzero
stopdat%values(errden_) = done stopdat%values(errden_) = done
if ((stopdat%controls(trace_) > 0).and. (me == 0))&
if (stopdat%controls(trace_) > 0) then & call log_header(methdname)
if (me == 0) then
mname = adjustl(trim(methdname))
write(outname,'(a)') mname(1:min(len_trim(mname),outlen-1))//':'
write(*,fmt) adjustl(outname),'Iter','Conv. Ind.','Epsilon'
endif
end if
call psb_erractionrestore(err_act) call psb_erractionrestore(err_act)
return return
@ -651,11 +672,6 @@ contains
integer, intent(out) :: info integer, intent(out) :: info
integer :: ictxt, me, np, err_act integer :: ictxt, me, np, err_act
real(kind(1.d0)) :: errnum, errden
character(len=*), parameter :: fmt='(a18,1x,i4,3(2x,es10.4))'
integer, parameter :: outlen=18
character(len=len(methdname)) :: mname
character(len=outlen) :: outname
character(len=20) :: name character(len=20) :: name
info = 0 info = 0
@ -664,6 +680,7 @@ contains
ictxt = psb_cd_get_context(desc_a) ictxt = psb_cd_get_context(desc_a)
call psb_info(ictxt,me,np) call psb_info(ictxt,me,np)
psb_d_check_conv = .false. psb_d_check_conv = .false.
select case(stopdat%controls(stopc_)) select case(stopdat%controls(stopc_))
@ -674,7 +691,7 @@ contains
stopdat%values(errden_) = & stopdat%values(errden_) = &
& (stopdat%values(ani_)*stopdat%values(xni_)+stopdat%values(bni_)) & (stopdat%values(ani_)*stopdat%values(xni_)+stopdat%values(bni_))
case(2) case(2)
stopdat%values(rn2_) = psb_genrm2(r,desc_a,info) stopdat%values(rn2_) = psb_genrm2(r,desc_a,info)
stopdat%values(errnum_) = stopdat%values(rn2_) stopdat%values(errnum_) = stopdat%values(rn2_)
stopdat%values(errden_) = stopdat%values(bn2_) stopdat%values(errden_) = stopdat%values(bn2_)
@ -695,21 +712,13 @@ contains
psb_d_check_conv = & psb_d_check_conv = &
& (stopdat%values(errnum_) <= stopdat%values(eps_)*stopdat%values(errden_)) & (stopdat%values(errnum_) <= stopdat%values(eps_)*stopdat%values(errden_))
end if end if
psb_d_check_conv = (psb_d_check_conv.or.(stopdat%controls(itmax_) <= it))
if (((stopdat%controls(trace_) > 0).and.(mod(it,stopdat%controls(trace_))==0))& if (((stopdat%controls(trace_) > 0).and.(mod(it,stopdat%controls(trace_))==0))&
& .or.psb_d_check_conv) then & .or.psb_d_check_conv) then
if (me == 0) then call log_conv(methdname,me,it,1,stopdat%values(errnum_),&
mname = adjustl(trim(methdname)) & stopdat%values(errden_),stopdat%values(eps_))
write(outname,'(a)') mname(1:min(len_trim(mname),outlen-1))//':'
if (stopdat%values(errden_) > dzero ) then
write(*,fmt) adjustl(outname),it,&
& stopdat%values(errnum_)/stopdat%values(errden_),stopdat%values(eps_)
else
write(*,fmt) adjustl(outname),it,&
& stopdat%values(errnum_),stopdat%values(eps_)
end if
Endif
end if end if
call psb_erractionrestore(err_act) call psb_erractionrestore(err_act)
@ -737,11 +746,6 @@ contains
integer, intent(out) :: info integer, intent(out) :: info
integer :: ictxt, me, np, err_act integer :: ictxt, me, np, err_act
real(kind(1.d0)) :: errnum, errden
character(len=*), parameter :: fmt='(a18,1x,i4,3(2x,es10.4))'
integer, parameter :: outlen=18
character(len=len(methdname)) :: mname
character(len=outlen) :: outname
character(len=20) :: name character(len=20) :: name
info = 0 info = 0
@ -781,21 +785,13 @@ contains
psb_z_check_conv = & psb_z_check_conv = &
& (stopdat%values(errnum_) <= stopdat%values(eps_)*stopdat%values(errden_)) & (stopdat%values(errnum_) <= stopdat%values(eps_)*stopdat%values(errden_))
end if end if
psb_z_check_conv = (psb_z_check_conv.or.(stopdat%controls(itmax_) <= it))
if (((stopdat%controls(trace_) > 0).and.(mod(it,stopdat%controls(trace_))==0))& if (((stopdat%controls(trace_) > 0).and.(mod(it,stopdat%controls(trace_))==0))&
& .or.psb_z_check_conv) then & .or.psb_z_check_conv) then
if (me == 0) then call log_conv(methdname,me,it,1,stopdat%values(errnum_),&
mname = adjustl(trim(methdname)) & stopdat%values(errden_),stopdat%values(eps_))
write(outname,'(a)') mname(1:min(len_trim(mname),outlen-1))//':'
if (stopdat%values(errden_) > dzero ) then
write(*,fmt) adjustl(outname),it,&
& stopdat%values(errnum_)/stopdat%values(errden_),stopdat%values(eps_)
else
write(*,fmt) adjustl(outname),it,&
& stopdat%values(errnum_),stopdat%values(eps_)
end if
Endif
end if end if
call psb_erractionrestore(err_act) call psb_erractionrestore(err_act)
@ -829,52 +825,18 @@ contains
info = 0 info = 0
name = 'psb_end_conv' name = 'psb_end_conv'
call psb_erractionsave(err_act)
ictxt = psb_cd_get_context(desc_a) ictxt = psb_cd_get_context(desc_a)
call psb_info(ictxt,me,np) call psb_info(ictxt,me,np)
if (present(iter)) iter = it
errnum = stopdat%values(errnum_) errnum = stopdat%values(errnum_)
errden = stopdat%values(errden_) errden = stopdat%values(errden_)
eps = stopdat%values(eps_) eps = stopdat%values(eps_)
if (errden == dzero) then
if (errnum > eps) then
if (me==0) then
write(*,fmt) trim(methdname)//' failed to converge to ',eps,&
& ' in ',it,' iterations. '
write(*,fmt1) 'Last iteration convergence indicator: ',&
& errnum
end if
end if
if (present(err)) err=errnum
else
if (errnum > eps) then
if (me==0) then
write(*,fmt) trim(methdname)//' failed to converge to ',eps,&
& ' in ',it,' iterations. '
write(*,fmt1) 'Last iteration convergence indicator: ',&
& errnum/errden
end if
endif
if (present(err)) err=errnum/errden
end if
call psb_erractionrestore(err_act) call log_end(methdname,me,it,errnum,errden,eps,err,iter)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act == psb_act_abort_) then
call psb_error(ictxt)
return
end if
end subroutine psb_end_conv end subroutine psb_end_conv

2
krylov/psb_zcgs.f90
Unescape Escape View File

@ -191,7 +191,7 @@ Subroutine psb_zcgs(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop)
itx = 0 itx = 0
call psb_init_conv(methdname,istop_,itrace_,a,b,eps,desc_a,stopdat,info) call psb_init_conv(methdname,istop_,itrace_,itmax_,a,b,eps,desc_a,stopdat,info)
if (info /= 0) Then if (info /= 0) Then
call psb_errpush(4011,name) call psb_errpush(4011,name)
goto 9999 goto 9999

10
krylov/psb_zcgstab.f90
Unescape Escape View File

@ -112,7 +112,7 @@ subroutine psb_zcgstab(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop)
Complex(Kind(1.d0)), allocatable, target :: aux(:),wwrk(:,:) Complex(Kind(1.d0)), allocatable, target :: aux(:),wwrk(:,:)
Complex(Kind(1.d0)), Pointer :: q(:),& Complex(Kind(1.d0)), Pointer :: q(:),&
& r(:), p(:), v(:), s(:), t(:), z(:), f(:) & r(:), p(:), v(:), s(:), t(:), z(:), f(:)
Integer :: litmax, naux, mglob, it,itrace_,& Integer :: itmax_, naux, mglob, it,itrace_,&
& np,me, n_row, n_col & np,me, n_row, n_col
integer :: debug_level, debug_unit integer :: debug_level, debug_unit
Integer :: itx, isvch, ictxt, err_act Integer :: itx, isvch, ictxt, err_act
@ -177,9 +177,9 @@ subroutine psb_zcgstab(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop)
Z => WWRK(:,8) Z => WWRK(:,8)
if (present(itmax)) then if (present(itmax)) then
litmax = itmax itmax_ = itmax
else else
litmax = 1000 itmax_ = 1000
endif endif
if (present(itrace)) then if (present(itrace)) then
@ -194,7 +194,7 @@ subroutine psb_zcgstab(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop)
itx = 0 itx = 0
call psb_init_conv(methdname,istop_,itrace_,a,b,eps,desc_a,stopdat,info) call psb_init_conv(methdname,istop_,itrace_,itmax_,a,b,eps,desc_a,stopdat,info)
if (info /= 0) Then if (info /= 0) Then
call psb_errpush(4011,name) call psb_errpush(4011,name)
goto 9999 goto 9999
@ -205,7 +205,7 @@ subroutine psb_zcgstab(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop)
!!$ !!$
!!$ r0 = b-Ax0 !!$ r0 = b-Ax0
!!$ !!$
if (itx >= litmax) exit restart if (itx >= itmax_) exit restart
it = 0 it = 0
call psb_geaxpby(zone,b,zzero,r,desc_a,info) call psb_geaxpby(zone,b,zzero,r,desc_a,info)
if (info == 0) call psb_spmm(-zone,a,x,zone,r,desc_a,info,work=aux) if (info == 0) call psb_spmm(-zone,a,x,zone,r,desc_a,info,work=aux)

16
krylov/psb_zrgmres.f90
Unescape Escape View File

@ -254,10 +254,11 @@ Subroutine psb_zrgmres(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,irst,ist
call psb_errpush(info,name) call psb_errpush(info,name)
goto 9999 goto 9999
end if end if
if ((itrace_ > 0).and.(me==0)) call log_header(methdname)
itx = 0 itx = 0
restart: Do restart: do
! compute r0 = b-ax0 ! compute r0 = b-ax0
! check convergence ! check convergence
! compute v1 = r0/||r0||_2 ! compute v1 = r0/||r0||_2
@ -435,16 +436,7 @@ Subroutine psb_zrgmres(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,irst,ist
if (itrace_ > 0) & if (itrace_ > 0) &
& call log_conv(methdname,me,itx,1,errnum,errden,eps) & call log_conv(methdname,me,itx,1,errnum,errden,eps)
if (present(err)) then call log_end(methdname,me,itx,errnum,errden,eps,err=err,iter=iter)
if (errden /= dzero) then
err = errnum/errden
else
err = errnum
end if
end if
if (present(iter)) iter = itx
if (errnum > eps*errden) &
& call end_log(methdname,me,itx,errnum,errden,eps)
deallocate(aux,h,c,s,rs,rst, stat=info) deallocate(aux,h,c,s,rs,rst, stat=info)
if (info == 0) call psb_gefree(v,desc_a,info) if (info == 0) call psb_gefree(v,desc_a,info)

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