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stopcriterion
Salvatore Filippone 8 years ago
parent 1b781b19ef
commit b499d2e542
1 changed files with 215 additions and 156 deletions
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tests/newslv/ppde3d.f90
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@ -38,9 +38,9 @@
!
!
!
! File: ppde3d.f90
! File: mld_d_pde3d.f90
!
! Program: ppde3d
! Program: mld_d_pde3d
! This sample program solves a linear system obtained by discretizing a
! PDE with Dirichlet BCs.
!
@ -64,52 +64,52 @@
! then the corresponding vector is distributed according to a BLOCK
! data distribution.
!
module ppde3d_mod
module mld_d_pde3d_mod
contains
!
! functions parametrizing the differential equation
!
function b1(x,y,z)
use psb_base_mod, only : psb_dpk_
use psb_base_mod, only : psb_dpk_,done,dzero
real(psb_dpk_) :: b1
real(psb_dpk_), intent(in) :: x,y,z
b1=1.d0/sqrt(3.d0)
b1=dzero/sqrt((3*done))
end function b1
function b2(x,y,z)
use psb_base_mod, only : psb_dpk_
use psb_base_mod, only : psb_dpk_,done,dzero
real(psb_dpk_) :: b2
real(psb_dpk_), intent(in) :: x,y,z
b2=1.d0/sqrt(3.d0)
b2=dzero/sqrt((3*done))
end function b2
function b3(x,y,z)
use psb_base_mod, only : psb_dpk_
use psb_base_mod, only : psb_dpk_,done,dzero
real(psb_dpk_) :: b3
real(psb_dpk_), intent(in) :: x,y,z
b3=1.d0/sqrt(3.d0)
b3=dzero/sqrt((3*done))
end function b3
function c(x,y,z)
use psb_base_mod, only : psb_dpk_
use psb_base_mod, only : psb_dpk_,done,dzero
real(psb_dpk_) :: c
real(psb_dpk_), intent(in) :: x,y,z
c=0.d0
c=dzero
end function c
function a1(x,y,z)
use psb_base_mod, only : psb_dpk_
use psb_base_mod, only : psb_dpk_,done,dzero
real(psb_dpk_) :: a1
real(psb_dpk_), intent(in) :: x,y,z
a1=1.d0/80
a1=done!/80
end function a1
function a2(x,y,z)
use psb_base_mod, only : psb_dpk_
use psb_base_mod, only : psb_dpk_,done,dzero
real(psb_dpk_) :: a2
real(psb_dpk_), intent(in) :: x,y,z
a2=1.d0/80
a2=done!/80
end function a2
function a3(x,y,z)
use psb_base_mod, only : psb_dpk_
use psb_base_mod, only : psb_dpk_,done,dzero
real(psb_dpk_) :: a3
real(psb_dpk_), intent(in) :: x,y,z
a3=1.d0/80
a3=done!/80
end function a3
function g(x,y,z)
use psb_base_mod, only : psb_dpk_,done,dzero
@ -122,26 +122,25 @@ contains
g = exp(y**2-z**2)
end if
end function g
end module ppde3d_mod
end module mld_d_pde3d_mod
program ppde3d
program mld_d_pde3d
use psb_base_mod
use mld_prec_mod
use psb_krylov_mod
use psb_util_mod
use data_input
use ppde3d_mod
use mld_d_pde3d_mod
use mld_d_tlu_solver
implicit none
! input parameters
character(len=20) :: kmethd, ptype
character(len=5) :: afmt
integer :: idim
integer(psb_ipk_) :: idim
! miscellaneous
real(psb_dpk_), parameter :: one = 1.d0
real(psb_dpk_) :: t1, t2, tprec
real(psb_dpk_) :: t1, t2, tprec, thier, tslv
! sparse matrix and preconditioner
type(psb_dspmat_type) :: a
@ -149,45 +148,51 @@ program ppde3d
type(mld_d_tlu_solver_type) :: tlusv
! descriptor
type(psb_desc_type) :: desc_a
! dense matrices
! dense vectors
type(psb_d_vect_type) :: x,b
! blacs parameters
integer :: ictxt, iam, np
! parallel environment
integer(psb_ipk_) :: ictxt, iam, np
! solver parameters
integer :: iter, itmax,itrace, istopc, irst, nlv
integer(psb_ipk_) :: iter, itmax,itrace, istopc, irst, nlv
integer(psb_long_int_k_) :: amatsize, precsize, descsize
real(psb_dpk_) :: err, eps
type precdata
character(len=20) :: descr ! verbose description of the prec
character(len=10) :: prec ! overall prectype
integer :: novr ! number of overlap layers
integer :: jsweeps ! Jacobi/smoother sweeps
integer(psb_ipk_) :: novr ! number of overlap layers
integer(psb_ipk_) :: jsweeps ! Jacobi/smoother sweeps
character(len=16) :: restr ! restriction over application of as
character(len=16) :: prol ! prolongation over application of as
character(len=16) :: solve ! Solver type: ILU, SuperLU, UMFPACK.
integer :: fill1 ! Fill-in for factorization 1
integer(psb_ipk_) :: fill1 ! Fill-in for factorization 1
integer(psb_ipk_) :: svsweeps ! Solver sweeps for GS
real(psb_dpk_) :: thr1 ! Threshold for fact. 1 ILU(T)
character(len=16) :: smther ! Smoother
integer :: nlev ! Number of levels in multilevel prec.
character(len=16) :: aggrkind ! smoothed/raw aggregatin
character(len=16) :: aggr_alg ! local or global aggregation
integer(psb_ipk_) :: maxlevs ! Maximum number of levels in multilevel prec.
character(len=16) :: aggrprol ! smoothed/raw aggregatin
character(len=16) :: par_aggr_alg ! decoupled aggregation
character(len=16) :: aggr_ord ! Ordering for aggregation
character(len=16) :: aggr_filter ! Use filtering?
character(len=16) :: mltype ! additive or multiplicative 2nd level prec
character(len=16) :: smthpos ! side: pre, post, both smoothing
integer :: csize ! aggregation size at which to stop.
integer(psb_ipk_) :: csize ! aggregation size at which to stop.
character(len=16) :: cmat ! coarse mat
character(len=16) :: csolve ! Coarse solver: bjac, umf, slu, sludist
character(len=16) :: csbsolve ! Coarse subsolver: ILU, ILU(T), SuperLU, UMFPACK.
integer :: cfill ! Fill-in for factorization 1
integer(psb_ipk_) :: cfill ! Fill-in for factorization 1
real(psb_dpk_) :: cthres ! Threshold for fact. 1 ILU(T)
integer :: cjswp ! Jacobi sweeps
integer(psb_ipk_) :: cjswp ! Jacobi sweeps
real(psb_dpk_) :: athres ! smoother aggregation threshold
real(psb_dpk_) :: mncrratio ! Minimum aggregation ratio
end type precdata
type(precdata) :: prectype
type(psb_d_coo_sparse_mat) :: acoo
! other variables
integer :: info
logical :: dump_prec
character(len=40) :: dump_prefix
integer(psb_ipk_) :: info, i
character(len=20) :: name,ch_err
info=psb_success_
@ -202,8 +207,8 @@ program ppde3d
stop
endif
if(psb_get_errstatus() /= 0) goto 9999
name='pde90'
call psb_set_errverbosity(2)
name='mld_d_pde3d'
call psb_set_errverbosity(itwo)
!
! Hello world
!
@ -215,7 +220,8 @@ program ppde3d
!
! get parameters
!
call get_parms(ictxt,kmethd,prectype,afmt,idim,istopc,itmax,itrace,irst,eps)
call get_parms(ictxt,kmethd,prectype,afmt,idim,istopc,itmax,itrace,irst,eps,&
&dump_prec,dump_prefix)
!
! allocate and fill in the coefficient matrix, rhs and initial guess
@ -241,43 +247,75 @@ program ppde3d
!
! prepare the preconditioner.
!
if (psb_toupper(prectype%prec) == 'ML') then
nlv = prectype%nlev
call prec%init(prectype%prec, info, nlev=nlv)
call prec%set(mld_smoother_type_, prectype%smther, info)
call prec%set(mld_smoother_sweeps_, prectype%jsweeps, info)
call prec%set(mld_sub_ovr_, prectype%novr, info)
call prec%set(mld_sub_restr_, prectype%restr, info)
call prec%set(mld_sub_prol_, prectype%prol, info)
call prec%set(tlusv,info)
call prec%set(mld_sub_fillin_, prectype%fill1, info)
call prec%set(mld_sub_iluthrs_, prectype%thr1, info)
call prec%set(mld_aggr_kind_, prectype%aggrkind,info)
call prec%set(mld_aggr_alg_, prectype%aggr_alg,info)
call prec%set(mld_ml_type_, prectype%mltype, info)
call prec%set(mld_smoother_pos_, prectype%smthpos, info)
call prec%init(prectype%prec, info)
if (prectype%csize>0)&
& call prec%set('min_coarse_size', prectype%csize, info)
if (prectype%maxlevs>0)&
& call prec%set('max_levs', prectype%maxlevs, info)
if (prectype%mncrratio>0)&
& call prec%set('min_cr_ratio', prectype%mncrratio, info)
if (prectype%athres >= dzero) &
& call prec%set(mld_aggr_thresh_, prectype%athres, info)
call prec%set(mld_coarse_solve_, prectype%csolve, info)
call prec%set(mld_coarse_subsolve_, prectype%csbsolve,info)
call prec%set(mld_coarse_mat_, prectype%cmat, info)
call prec%set(mld_coarse_fillin_, prectype%cfill, info)
call prec%set(mld_coarse_iluthrs_, prectype%cthres, info)
call prec%set(mld_coarse_sweeps_, prectype%cjswp, info)
call prec%set(mld_coarse_aggr_size_, prectype%csize, info)
else
nlv = 1
call prec%init(prectype%prec, info, nlev=nlv)
call prec%set(mld_smoother_sweeps_, prectype%jsweeps, info)
call prec%set(mld_sub_ovr_, prectype%novr, info)
call prec%set(mld_sub_restr_, prectype%restr, info)
call prec%set(mld_sub_prol_, prectype%prol, info)
& call prec%set('aggr_thresh', prectype%athres, info)
call prec%set('aggr_prol', prectype%aggrprol,info)
call prec%set('par_aggr_alg', prectype%par_aggr_alg,info)
call prec%set('aggr_ord', prectype%aggr_ord,info)
call prec%set('aggr_filter', prectype%aggr_filter, info)
call psb_barrier(ictxt)
t1 = psb_wtime()
call prec%hierarchy_build(a,desc_a,info)
if(info /= psb_success_) then
info=psb_err_from_subroutine_
ch_err='psb_precbld'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
thier = psb_wtime()-t1
call prec%set('smoother_type', prectype%smther, info)
call prec%set('smoother_sweeps', prectype%jsweeps, info)
call prec%set('sub_ovr', prectype%novr, info)
call prec%set('sub_restr', prectype%restr, info)
call prec%set('sub_prol', prectype%prol, info)
call prec%set(tlusv, info)
call prec%set(mld_sub_fillin_, prectype%fill1, info)
call prec%set(mld_sub_iluthrs_, prectype%thr1, info)
call prec%set('sub_fillin', prectype%fill1, info)
call prec%set('solver_sweeps', prectype%svsweeps, info)
call prec%set('sub_iluthrs', prectype%thr1, info)
call prec%set('ml_type', prectype%mltype, info)
call prec%set('smoother_pos', prectype%smthpos, info)
call prec%set('coarse_solve', prectype%csolve, info)
call prec%set('coarse_subsolve', prectype%csbsolve,info)
call prec%set('coarse_mat', prectype%cmat, info)
call prec%set('coarse_fillin', prectype%cfill, info)
call prec%set('coarse_iluthrs', prectype%cthres, info)
call prec%set('coarse_sweeps', prectype%cjswp, info)
call psb_barrier(ictxt)
t1 = psb_wtime()
call prec%smoothers_build(a,desc_a,info)
if(info /= psb_success_) then
info=psb_err_from_subroutine_
ch_err='psb_precbld'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
tprec = psb_wtime()-t1
else
nlv = 1
call prec%init(prectype%prec, info)
call prec%set('smoother_sweeps', prectype%jsweeps, info)
call prec%set('sub_ovr', prectype%novr, info)
call prec%set('sub_restr', prectype%restr, info)
call prec%set('sub_prol', prectype%prol, info)
call prec%set('sub_solve', prectype%solve, info)
call prec%set('sub_fillin', prectype%fill1, info)
call prec%set('solver_sweeps', prectype%svsweeps, info)
call prec%set('sub_iluthrs', prectype%thr1, info)
call psb_barrier(ictxt)
thier = dzero
t1 = psb_wtime()
call prec%build(a,desc_a,info)
if(info /= psb_success_) then
@ -286,14 +324,14 @@ program ppde3d
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
tprec = psb_wtime()-t1
!!$ call prec%dump(info,prefix='test-ml',ac=.true.,solver=.true.,smoother=.true.)
end if
call psb_amx(ictxt,thier)
call psb_amx(ictxt,tprec)
if (iam == psb_root_) &
& write(psb_out_unit,'("Preconditioner time : ",es12.5)')tprec
& write(psb_out_unit,'("Preconditioner time : ",es12.5)') tprec+thier
if (iam == psb_root_) call prec%descr(info)
if (iam == psb_root_) &
& write(psb_out_unit,'(" ")')
@ -316,8 +354,8 @@ program ppde3d
end if
call psb_barrier(ictxt)
t2 = psb_wtime() - t1
call psb_amx(ictxt,t2)
tslv = psb_wtime() - t1
call psb_amx(ictxt,tslv)
amatsize = a%sizeof()
descsize = desc_a%sizeof()
@ -327,16 +365,26 @@ program ppde3d
call psb_sum(ictxt,precsize)
if (iam == psb_root_) then
write(psb_out_unit,'(" ")')
write(psb_out_unit,'("Time to solve matrix : ",es12.5)') t2
write(psb_out_unit,'("Time per iteration : ",es12.5)') t2/iter
write(psb_out_unit,'("Numer of levels of aggr. hierarchy: ",i12)') prec%get_nlevs()
write(psb_out_unit,'("Time to build aggr. hierarchy : ",es12.5)') thier
write(psb_out_unit,'("Time to build smoothers : ",es12.5)') tprec
write(psb_out_unit,'("Total preconditioner time : ",es12.5)') tprec+thier
write(psb_out_unit,'("Time to solve system : ",es12.5)') tslv
write(psb_out_unit,'("Time per iteration : ",es12.5)') tslv/iter
write(psb_out_unit,'("Number of iterations : ",i0)') iter
write(psb_out_unit,'("Convergence indicator on exit : ",es12.5)') err
write(psb_out_unit,'("Info on exit : ",i0)') info
write(psb_out_unit,'("Total memory occupation for A: ",i12)') amatsize
write(psb_out_unit,'("Storage format for A: ",a)') trim(a%get_fmt())
write(psb_out_unit,'("Total memory occupation for DESC_A: ",i12)') descsize
write(psb_out_unit,'("Storage format for DESC_A: ",a)') trim(desc_a%get_fmt())
write(psb_out_unit,'("Total memory occupation for PREC: ",i12)') precsize
end if
if (dump_prec) call prec%dump(info,prefix=trim(dump_prefix),&
& ac=.true.,solver=.true.,smoother=.true.,rp=.true.,global_num=.true.)
!
! cleanup storage and exit
!
@ -361,51 +409,59 @@ contains
!
! get iteration parameters from standard input
!
subroutine get_parms(ictxt,kmethd,prectype,afmt,idim,istopc,itmax,itrace,irst,eps)
integer :: ictxt
subroutine get_parms(ictxt,kmethd,prectype,afmt,idim,istopc,itmax,itrace,irst,eps,&
& dump_prec,dump_prefix)
integer(psb_ipk_) :: ictxt
type(precdata) :: prectype
character(len=*) :: kmethd, afmt
integer :: idim, istopc,itmax,itrace,irst
integer :: np, iam, info
integer(psb_ipk_) :: idim, istopc,itmax,itrace,irst
integer(psb_ipk_) :: np, iam, info
real(psb_dpk_) :: eps
logical :: dump_prec
character(len=*) :: dump_prefix
character(len=20) :: buffer
call psb_info(ictxt, iam, np)
if (iam == psb_root_) then
call read_data(kmethd,5)
call read_data(afmt,5)
call read_data(idim,5)
call read_data(istopc,5)
call read_data(itmax,5)
call read_data(itrace,5)
call read_data(irst,5)
call read_data(eps,5)
call read_data(prectype%descr,5) ! verbose description of the prec
call read_data(prectype%prec,5) ! overall prectype
call read_data(prectype%novr,5) ! number of overlap layers
call read_data(prectype%restr,5) ! restriction over application of as
call read_data(prectype%prol,5) ! prolongation over application of as
call read_data(prectype%solve,5) ! Factorization type: ILU, SuperLU, UMFPACK.
call read_data(prectype%fill1,5) ! Fill-in for factorization 1
call read_data(prectype%thr1,5) ! Threshold for fact. 1 ILU(T)
call read_data(prectype%jsweeps,5) ! Jacobi sweeps for PJAC
if (psb_toupper(prectype%prec) == 'ML') then
call read_data(prectype%smther,5) ! Smoother type.
call read_data(prectype%nlev,5) ! Number of levels in multilevel prec.
call read_data(prectype%aggrkind,5) ! smoothed/raw aggregatin
call read_data(prectype%aggr_alg,5) ! local or global aggregation
call read_data(prectype%mltype,5) ! additive or multiplicative 2nd level prec
call read_data(prectype%smthpos,5) ! side: pre, post, both smoothing
call read_data(prectype%cmat,5) ! coarse mat
call read_data(prectype%csolve,5) ! Factorization type: ILU, SuperLU, UMFPACK.
call read_data(prectype%csbsolve,5) ! Factorization type: ILU, SuperLU, UMFPACK.
call read_data(prectype%cfill,5) ! Fill-in for factorization 1
call read_data(prectype%cthres,5) ! Threshold for fact. 1 ILU(T)
call read_data(prectype%cjswp,5) ! Jacobi sweeps
call read_data(prectype%athres,5) ! smoother aggr thresh
call read_data(prectype%csize,5) ! coarse size
end if
call read_data(kmethd,psb_inp_unit)
call read_data(afmt,psb_inp_unit)
call read_data(idim,psb_inp_unit)
call read_data(istopc,psb_inp_unit)
call read_data(itmax,psb_inp_unit)
call read_data(itrace,psb_inp_unit)
call read_data(irst,psb_inp_unit)
call read_data(eps,psb_inp_unit)
call read_data(dump_prec,psb_inp_unit)
call read_data(dump_prefix,psb_inp_unit)
call read_data(prectype%descr,psb_inp_unit) ! verbose description of the prec
call read_data(prectype%prec,psb_inp_unit) ! overall prectype
call read_data(prectype%csize,psb_inp_unit) ! coarse size
call read_data(prectype%mncrratio,psb_inp_unit) ! Minimum aggregation ratio
call read_data(prectype%athres,psb_inp_unit) ! smoother aggr thresh
call read_data(prectype%maxlevs,psb_inp_unit) ! Maximum number of levels
call read_data(prectype%aggrprol,psb_inp_unit) ! smoothed/nonsmoothed/minenergy aggregatin
call read_data(prectype%par_aggr_alg,psb_inp_unit) ! decoupled or sym. decoupled aggregation
call read_data(prectype%aggr_ord,psb_inp_unit) ! aggregation ordering: natural, node degree
call read_data(prectype%aggr_filter,psb_inp_unit) ! aggregation filtering: filter, no_filter
call read_data(prectype%mltype,psb_inp_unit) ! additive or multiplicative 2nd level prec
call read_data(prectype%smthpos,psb_inp_unit) ! side: pre, post, both smoothing
call read_data(prectype%jsweeps,psb_inp_unit) ! Smoother sweeps
call read_data(prectype%smther,psb_inp_unit) ! Smoother type.
call read_data(prectype%novr,psb_inp_unit) ! number of overlap layers
call read_data(prectype%restr,psb_inp_unit) ! restriction over application of as
call read_data(prectype%prol,psb_inp_unit) ! prolongation over application of as
call read_data(prectype%solve,psb_inp_unit) ! Subdomain solver: DSCALE ILU MILU ILUT FWGS BWGS MUMPS UMF SLU
call read_data(prectype%svsweeps,psb_inp_unit) ! Solver sweeps (GS)
call read_data(prectype%fill1,psb_inp_unit) ! Fill-in for factorization 1
call read_data(prectype%thr1,psb_inp_unit) ! Threshold for fact. 1 ILU(T)
call read_data(prectype%cmat,psb_inp_unit) ! coarse mat
call read_data(prectype%csolve,psb_inp_unit) ! Coarse solver: JACOBI BJAC UMF SLU SLUDIST MUMPS
call read_data(prectype%csbsolve,psb_inp_unit) ! subsolver: DSCALE GS BWGS ILU UMF SLU SLUDIST MUMPS
call read_data(prectype%cfill,psb_inp_unit) ! Fill-in for factorization 1
call read_data(prectype%cthres,psb_inp_unit) ! Threshold for fact. 1 ILU(T)
call read_data(prectype%cjswp,psb_inp_unit) ! Jacobi sweeps
end if
! broadcast parameters to all processors
@ -417,33 +473,36 @@ contains
call psb_bcast(ictxt,itrace)
call psb_bcast(ictxt,irst)
call psb_bcast(ictxt,eps)
call psb_bcast(ictxt,dump_prec)
call psb_bcast(ictxt,dump_prefix)
call psb_bcast(ictxt,prectype%descr) ! verbose description of the prec
call psb_bcast(ictxt,prectype%prec) ! overall prectype
call psb_bcast(ictxt,prectype%csize) ! coarse size
call psb_bcast(ictxt,prectype%mncrratio) ! Minimum aggregation ratio
call psb_bcast(ictxt,prectype%athres) ! smoother aggr thresh
call psb_bcast(ictxt,prectype%maxlevs) ! Maximum number of levels
call psb_bcast(ictxt,prectype%aggrprol) ! smoothed/nonsmoothed/minenergy aggregatin
call psb_bcast(ictxt,prectype%par_aggr_alg) ! decoupled or sym. decoupled aggregation
call psb_bcast(ictxt,prectype%aggr_ord) ! aggregation ordering: natural, node degree
call psb_bcast(ictxt,prectype%aggr_filter) ! aggregation filtering: filter, no_filter
call psb_bcast(ictxt,prectype%mltype) ! additive or multiplicative 2nd level prec
call psb_bcast(ictxt,prectype%smthpos) ! side: pre, post, both smoothing
call psb_bcast(ictxt,prectype%jsweeps) ! Smoother sweeps
call psb_bcast(ictxt,prectype%smther) ! Smoother type.
call psb_bcast(ictxt,prectype%novr) ! number of overlap layers
call psb_bcast(ictxt,prectype%restr) ! restriction over application of as
call psb_bcast(ictxt,prectype%prol) ! prolongation over application of as
call psb_bcast(ictxt,prectype%solve) ! Factorization type: ILU, SuperLU, UMFPACK.
call psb_bcast(ictxt,prectype%solve) ! Subdomain solver: DSCALE ILU MILU ILUT FWGS BWGS MUMPS UMF SLU
call psb_bcast(ictxt,prectype%svsweeps) ! Solver sweeps (GS)
call psb_bcast(ictxt,prectype%fill1) ! Fill-in for factorization 1
call psb_bcast(ictxt,prectype%thr1) ! Threshold for fact. 1 ILU(T)
call psb_bcast(ictxt,prectype%jsweeps) ! Jacobi sweeps
if (psb_toupper(prectype%prec) == 'ML') then
call psb_bcast(ictxt,prectype%smther) ! Smoother type.
call psb_bcast(ictxt,prectype%nlev) ! Number of levels in multilevel prec.
call psb_bcast(ictxt,prectype%aggrkind) ! smoothed/raw aggregatin
call psb_bcast(ictxt,prectype%aggr_alg) ! local or global aggregation
call psb_bcast(ictxt,prectype%mltype) ! additive or multiplicative 2nd level prec
call psb_bcast(ictxt,prectype%smthpos) ! side: pre, post, both smoothing
call psb_bcast(ictxt,prectype%cmat) ! coarse mat
call psb_bcast(ictxt,prectype%csolve) ! Factorization type: ILU, SuperLU, UMFPACK.
call psb_bcast(ictxt,prectype%csbsolve) ! Factorization type: ILU, SuperLU, UMFPACK.
call psb_bcast(ictxt,prectype%csolve) ! Coarse solver: JACOBI BJAC UMF SLU SLUDIST MUMPS
call psb_bcast(ictxt,prectype%csbsolve) ! subsolver: DSCALE GS BWGS ILU UMF SLU SLUDIST MUMPS
call psb_bcast(ictxt,prectype%cfill) ! Fill-in for factorization 1
call psb_bcast(ictxt,prectype%cthres) ! Threshold for fact. 1 ILU(T)
call psb_bcast(ictxt,prectype%cjswp) ! Jacobi sweeps
call psb_bcast(ictxt,prectype%athres) ! smoother aggr thresh
call psb_bcast(ictxt,prectype%csize) ! coarse size
end if
if (iam == psb_root_) then
write(psb_out_unit,'("Solving matrix : ell1")')
@ -462,9 +521,9 @@ contains
! print an error message
!
subroutine pr_usage(iout)
integer :: iout
integer(psb_ipk_) :: iout
write(iout,*)'incorrect parameter(s) found'
write(iout,*)' usage: pde90 methd prec dim &
write(iout,*)' usage: mld_d_pde3d methd prec dim &
&[istop itmax itrace]'
write(iout,*)' where:'
write(iout,*)' methd: cgstab cgs rgmres bicgstabl'
@ -478,5 +537,5 @@ contains
write(iout,*)' >= 1 do tracing every itrace'
write(iout,*)' iterations '
end subroutine pr_usage
end program ppde3d
end program mld_d_pde3d

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