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stopcriterion
Salvatore Filippone 9 years ago
parent 0a6b51095a
commit 086ff71d48
1 changed files with 49 additions and 63 deletions
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108
mlprec/impl/mld_dmlprec_aply.f90
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@ -730,38 +730,28 @@ contains
!
! Compute the residual and call recursively
!
if (pre) then
call psb_geaxpby(done,mlprec_wrk(level)%vx2l,&
& dzero,mlprec_wrk(level)%vty,&
& p%precv(level)%base_desc,info)
call psb_geaxpby(done,mlprec_wrk(level)%vx2l,&
& dzero,mlprec_wrk(level)%vty,&
& p%precv(level)%base_desc,info)
if (info == psb_success_) call psb_spmm(-done,p%precv(level)%base_a,&
& mlprec_wrk(level)%vy2l,done,mlprec_wrk(level)%vty,&
& p%precv(level)%base_desc,info,work=work,trans=trans)
if (info /= psb_success_) then
call psb_errpush(psb_err_internal_error_,name,&
& a_err='Error during residue')
goto 9999
end if
call psb_map_X2Y(done,mlprec_wrk(level)%vty,&
& dzero,mlprec_wrk(level+1)%vx2l,&
& p%precv(level+1)%map,info,work=work)
if (info /= psb_success_) then
call psb_errpush(psb_err_internal_error_,name,&
& a_err='Error during restriction')
goto 9999
end if
if (info == psb_success_) call psb_spmm(-done,p%precv(level)%base_a,&
& mlprec_wrk(level)%vy2l,done,mlprec_wrk(level)%vty,&
& p%precv(level)%base_desc,info,work=work,trans=trans)
if (info /= psb_success_) then
call psb_errpush(psb_err_internal_error_,name,&
& a_err='Error during residue')
goto 9999
end if
call psb_map_X2Y(done,mlprec_wrk(level)%vty,&
& dzero,mlprec_wrk(level+1)%vx2l,&
& p%precv(level+1)%map,info,work=work)
if (info /= psb_success_) then
call psb_errpush(psb_err_internal_error_,name,&
& a_err='Error during restriction')
goto 9999
end if
else
! Shortcut: just transfer x2l.
call psb_map_X2Y(done,mlprec_wrk(level)%vx2l,&
& dzero,mlprec_wrk(level+1)%vx2l,&
& p%precv(level+1)%map,info,work=work)
if (info /= psb_success_) then
call psb_errpush(psb_err_internal_error_,name,&
& a_err='Error during restriction')
goto 9999
end if
endif
! First guess is zero
call mlprec_wrk(level+1)%vy2l%zero()
@ -780,7 +770,6 @@ contains
goto 9999
end if
!
! Apply the prolongator
!
@ -793,23 +782,21 @@ contains
goto 9999
end if
if (post) then
if (.not.pre) then
!
! If we have only post, we need to compute the residual here.
!
call psb_geaxpby(done,mlprec_wrk(level)%vx2l,&
& dzero,mlprec_wrk(level)%vty,&
& p%precv(level)%base_desc,info)
call psb_spmm(-done,p%precv(level)%base_a,mlprec_wrk(level)%vy2l,&
& done,mlprec_wrk(level)%vty,p%precv(level)%base_desc,info,&
& work=work,trans=trans)
if (info /= psb_success_) then
call psb_errpush(psb_err_internal_error_,name,&
& a_err='Error during residue')
goto 9999
end if
call psb_geaxpby(done,mlprec_wrk(level)%vx2l,&
& dzero,mlprec_wrk(level)%vty,&
& p%precv(level)%base_desc,info)
if (info == psb_success_) call psb_spmm(-done,p%precv(level)%base_a,&
& mlprec_wrk(level)%vy2l,done,mlprec_wrk(level)%vty,&
& p%precv(level)%base_desc,info,work=work,trans=trans)
if (info /= psb_success_) then
call psb_errpush(psb_err_internal_error_,name,&
& a_err='Error during residue')
goto 9999
end if
!
! Apply the second smoother
!
@ -818,13 +805,13 @@ contains
if (info == psb_success_) call p%precv(level)%sm2%apply(done,&
& mlprec_wrk(level)%vty,done,mlprec_wrk(level)%vy2l,&
& p%precv(level)%base_desc, trans,&
& sweeps,work,info,init='Y')
& sweeps,work,info,init='Z')
else
sweeps = p%precv(level)%parms%sweeps_pre
if (info == psb_success_) call p%precv(level)%sm%apply(done,&
& mlprec_wrk(level)%vty,done,mlprec_wrk(level)%vy2l,&
& p%precv(level)%base_desc, trans,&
& sweeps,work,info,init='Y')
& sweeps,work,info,init='Z')
end if
if (info /= psb_success_) then
@ -978,7 +965,7 @@ contains
!Set the preconditioner
if ((level < nlev - 2)) then
if ((level < nlev - 1)) then
if (p%precv(level)%parms%ml_type == mld_kcyclesym_ml_) then
call mld_dinneritkcycle(p, mlprec_wrk, level + 1, trans, work, 'FCG')
elseif (p%precv(level)%parms%ml_type == mld_kcycle_ml_) then
@ -1008,22 +995,21 @@ contains
end if
!
! Compute the residual
! Apply the smoother
!
call psb_geaxpby(done,mlprec_wrk(level)%vx2l,&
& dzero,mlprec_wrk(level)%vty,&
& p%precv(level)%base_desc,info)
call psb_spmm(-done,p%precv(level)%base_a,mlprec_wrk(level)%vy2l,&
& done,mlprec_wrk(level)%vty,p%precv(level)%base_desc,info,&
& work=work,trans=trans)
if (info == psb_success_) call psb_spmm(-done,p%precv(level)%base_a,&
& mlprec_wrk(level)%vy2l,done,mlprec_wrk(level)%vty,&
& p%precv(level)%base_desc,info,work=work,trans=trans)
if (info /= psb_success_) then
call psb_errpush(psb_err_internal_error_,name,&
& a_err='Error during residue')
goto 9999
end if
!
! Apply the smoother
!
end if
if (trans == 'N') then
sweeps = p%precv(level)%parms%sweeps_post
if (info == psb_success_) call p%precv(level)%sm2%apply(done,&
@ -1103,7 +1089,7 @@ contains
& p%precv(level)%base_desc,info,&
& scratch=.true.,mold=mlprec_wrk(level)%vx2l%v)
call x%zero()
!!$ call x%zero()
! rhs=vx2l and w=rhs
call psb_geaxpby(done,mlprec_wrk(level)%vx2l,dzero,rhs,&
@ -1166,7 +1152,7 @@ contains
if (l2_norm <= rtol*delta) then
!Update solution x
call psb_geaxpby(alpha, d(idx), done, x, p%precv(level)%base_desc, info)
call psb_geaxpby(alpha, d(idx), dzero, x, p%precv(level)%base_desc, info)
else
iter = iter + 1
idx=mod(iter,2)
@ -1202,7 +1188,7 @@ contains
!Update solution
alpha=alpha-(tau1*tau3)/(tau*tau4)
call psb_geaxpby(alpha,d(idx - 1),done,x,p%precv(level)%base_desc,info)
call psb_geaxpby(alpha,d(idx - 1),dzero,x,p%precv(level)%base_desc,info)
alpha=tau3/tau4
call psb_geaxpby(alpha,d(idx),done,x,p%precv(level)%base_desc,info)
endif

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