You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
355 lines
13 KiB
Fortran
355 lines
13 KiB
Fortran
17 years ago
|
!!$
|
||
|
|
!!$ Parallel Sparse BLAS v2.0
|
||
|
|
!!$ (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata
|
||
|
|
!!$ Alfredo Buttari University of Rome Tor Vergata
|
||
|
|
!!$
|
||
|
|
!!$ 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 PSBLAS 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 PSBLAS 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.
|
||
|
|
!!$
|
||
|
|
!!$
|
||
|
|
!
|
||
|
|
! This is a partial duplication of material already present in the Krylov
|
||
|
|
! part of the PSBLAS subtree. This is not as bad as it sounds, since
|
||
|
|
! 1. There is no actual computation here, these are just wrappers around
|
||
|
|
! the actual methods, so very little code is necessary;
|
||
|
|
! 2. Changing the wrappers enables issuing error messages with a subroutine
|
||
|
|
! name coherent with what the user sees;
|
||
|
|
! 3. At the very least we would need a layer renaming the PSBLAS krylov interfaces,
|
||
|
|
! so we are doing approx. the same amount of (re)coding.
|
||
|
|
!
|
||
|
|
Module mld_krylov_mod
|
||
|
|
|
||
|
|
|
||
|
|
interface mld_krylov
|
||
|
|
module procedure mld_dkrylov, mld_zkrylov
|
||
|
|
end interface
|
||
|
|
|
||
|
|
interface psb_cg
|
||
|
|
subroutine psb_dcg(a,prec,b,x,eps,&
|
||
|
|
& desc_a,info,itmax,iter,err,itrace,istop)
|
||
|
|
use psb_base_mod
|
||
|
|
use psb_prec_mod
|
||
|
|
type(psb_dspmat_type), intent(in) :: a
|
||
|
|
type(psb_desc_type), intent(in) :: desc_a
|
||
|
|
real(kind(1.d0)), intent(in) :: b(:)
|
||
|
|
real(kind(1.d0)), intent(inout) :: x(:)
|
||
|
|
real(kind(1.d0)), intent(in) :: eps
|
||
|
|
type(psb_dprec_type), intent(in) :: prec
|
||
|
|
integer, intent(out) :: info
|
||
|
|
integer, optional, intent(in) :: itmax, itrace,istop
|
||
|
|
integer, optional, intent(out) :: iter
|
||
|
|
real(kind(1.d0)), optional, intent(out) :: err
|
||
|
|
end subroutine psb_dcg
|
||
|
|
end interface
|
||
|
|
|
||
|
|
interface psb_bicg
|
||
|
|
subroutine psb_dbicg(a,prec,b,x,eps,&
|
||
|
|
& desc_a,info,itmax,iter,err,itrace,istop)
|
||
|
|
use psb_base_mod
|
||
|
|
use psb_prec_mod
|
||
|
|
type(psb_dspmat_type), intent(in) :: a
|
||
|
|
type(psb_desc_type), intent(in) :: desc_a
|
||
|
|
real(kind(1.d0)), intent(in) :: b(:)
|
||
|
|
real(kind(1.d0)), intent(inout) :: x(:)
|
||
|
|
real(kind(1.d0)), intent(in) :: eps
|
||
|
|
type(psb_dprec_type), intent(in) :: prec
|
||
|
|
integer, intent(out) :: info
|
||
|
|
integer, optional, intent(in) :: itmax, itrace,istop
|
||
|
|
integer, optional, intent(out) :: iter
|
||
|
|
real(kind(1.d0)), optional, intent(out) :: err
|
||
|
|
end subroutine psb_dbicg
|
||
|
|
end interface
|
||
|
|
|
||
|
|
interface psb_bicgstab
|
||
|
|
subroutine psb_dcgstab(a,prec,b,x,eps,&
|
||
|
|
& desc_a,info,itmax,iter,err,itrace,istop)
|
||
|
|
use psb_base_mod
|
||
|
|
use psb_prec_mod
|
||
|
|
type(psb_dspmat_type), intent(in) :: a
|
||
|
|
type(psb_desc_type), intent(in) :: desc_a
|
||
|
|
real(kind(1.d0)), intent(in) :: b(:)
|
||
|
|
real(kind(1.d0)), intent(inout) :: x(:)
|
||
|
|
real(kind(1.d0)), intent(in) :: eps
|
||
|
|
type(psb_dprec_type), intent(in) :: prec
|
||
|
|
integer, intent(out) :: info
|
||
|
|
integer, optional, intent(in) :: itmax, itrace,istop
|
||
|
|
integer, optional, intent(out) :: iter
|
||
|
|
real(kind(1.d0)), optional, intent(out) :: err
|
||
|
|
end subroutine psb_dcgstab
|
||
|
|
subroutine psb_zcgstab(a,prec,b,x,eps,&
|
||
|
|
& desc_a,info,itmax,iter,err,itrace,istop)
|
||
|
|
use psb_base_mod
|
||
|
|
use psb_prec_mod
|
||
|
|
type(psb_zspmat_type), intent(in) :: a
|
||
|
|
type(psb_desc_type), intent(in) :: desc_a
|
||
|
|
complex(kind(1.d0)), intent(in) :: b(:)
|
||
|
|
complex(kind(1.d0)), intent(inout) :: x(:)
|
||
|
|
real(kind(1.d0)), intent(in) :: eps
|
||
|
|
type(psb_zprec_type), intent(in) :: prec
|
||
|
|
integer, intent(out) :: info
|
||
|
|
integer, optional, intent(in) :: itmax, itrace,istop
|
||
|
|
integer, optional, intent(out) :: iter
|
||
|
|
real(kind(1.d0)), optional, intent(out) :: err
|
||
|
|
end subroutine psb_zcgstab
|
||
|
|
end interface
|
||
|
|
|
||
|
|
interface psb_bicgstabl
|
||
|
|
Subroutine psb_dcgstabl(a,prec,b,x,eps,desc_a,info,&
|
||
|
|
&itmax,iter,err, itrace,irst,istop)
|
||
|
|
use psb_base_mod
|
||
|
|
use psb_prec_mod
|
||
|
|
Type(psb_dspmat_type), Intent(in) :: a
|
||
|
|
Type(psb_desc_type), Intent(in) :: desc_a
|
||
|
|
type(psb_dprec_type), intent(in) :: prec
|
||
|
|
Real(Kind(1.d0)), Intent(in) :: b(:)
|
||
|
|
Real(Kind(1.d0)), Intent(inout) :: x(:)
|
||
|
|
Real(Kind(1.d0)), Intent(in) :: eps
|
||
|
|
integer, intent(out) :: info
|
||
|
|
Integer, Optional, Intent(in) :: itmax, itrace, irst,istop
|
||
|
|
Integer, Optional, Intent(out) :: iter
|
||
|
|
Real(Kind(1.d0)), Optional, Intent(out) :: err
|
||
|
|
end subroutine psb_dcgstabl
|
||
|
|
end interface
|
||
|
|
|
||
|
|
interface psb_rgmres
|
||
|
|
Subroutine psb_dgmresr(a,prec,b,x,eps,desc_a,info,&
|
||
|
|
&itmax,iter,err,itrace,irst,istop)
|
||
|
|
use psb_base_mod
|
||
|
|
use psb_prec_mod
|
||
|
|
Type(psb_dspmat_type), Intent(in) :: a
|
||
|
|
Type(psb_desc_type), Intent(in) :: desc_a
|
||
|
|
type(psb_dprec_type), intent(in) :: prec
|
||
|
|
Real(Kind(1.d0)), Intent(in) :: b(:)
|
||
|
|
Real(Kind(1.d0)), Intent(inout) :: x(:)
|
||
|
|
Real(Kind(1.d0)), Intent(in) :: eps
|
||
|
|
integer, intent(out) :: info
|
||
|
|
Integer, Optional, Intent(in) :: itmax, itrace, irst,istop
|
||
|
|
Integer, Optional, Intent(out) :: iter
|
||
|
|
Real(Kind(1.d0)), Optional, Intent(out) :: err
|
||
|
|
end subroutine psb_dgmresr
|
||
|
|
Subroutine psb_zgmresr(a,prec,b,x,eps,desc_a,info,&
|
||
|
|
&itmax,iter,err,itrace,irst,istop)
|
||
|
|
use psb_base_mod
|
||
|
|
use psb_prec_mod
|
||
|
|
Type(psb_zspmat_type), Intent(in) :: a
|
||
|
|
Type(psb_desc_type), Intent(in) :: desc_a
|
||
|
|
type(psb_zprec_type), intent(in) :: prec
|
||
|
|
complex(Kind(1.d0)), Intent(in) :: b(:)
|
||
|
|
complex(Kind(1.d0)), Intent(inout) :: x(:)
|
||
|
|
Real(Kind(1.d0)), Intent(in) :: eps
|
||
|
|
integer, intent(out) :: info
|
||
|
|
Integer, Optional, Intent(in) :: itmax, itrace, irst,istop
|
||
|
|
Integer, Optional, Intent(out) :: iter
|
||
|
|
Real(Kind(1.d0)), Optional, Intent(out) :: err
|
||
|
|
end subroutine psb_zgmresr
|
||
|
|
end interface
|
||
|
|
|
||
|
|
interface psb_cgs
|
||
|
|
subroutine psb_dcgs(a,prec,b,x,eps,desc_a,info,&
|
||
|
|
&itmax,iter,err,itrace,istop)
|
||
|
|
use psb_base_mod
|
||
|
|
use psb_prec_mod
|
||
|
|
type(psb_dspmat_type), intent(in) :: a
|
||
|
|
type(psb_desc_type), intent(in) :: desc_a
|
||
|
|
type(psb_dprec_type), intent(in) :: prec
|
||
|
|
real(kind(1.d0)), intent(in) :: b(:)
|
||
|
|
real(kind(1.d0)), intent(inout) :: x(:)
|
||
|
|
real(kind(1.d0)), intent(in) :: eps
|
||
|
|
integer, intent(out) :: info
|
||
|
|
integer, optional, intent(in) :: itmax, itrace,istop
|
||
|
|
integer, optional, intent(out) :: iter
|
||
|
|
real(kind(1.d0)), optional, intent(out) :: err
|
||
|
|
end subroutine psb_dcgs
|
||
|
|
subroutine psb_zcgs(a,prec,b,x,eps,&
|
||
|
|
& desc_a,info,itmax,iter,err,itrace,istop)
|
||
|
|
use psb_base_mod
|
||
|
|
use psb_prec_mod
|
||
|
|
type(psb_zspmat_type), intent(in) :: a
|
||
|
|
type(psb_desc_type), intent(in) :: desc_a
|
||
|
|
complex(kind(1.d0)), intent(in) :: b(:)
|
||
|
|
complex(kind(1.d0)), intent(inout) :: x(:)
|
||
|
|
real(kind(1.d0)), intent(in) :: eps
|
||
|
|
type(psb_zprec_type), intent(in) :: prec
|
||
|
|
integer, intent(out) :: info
|
||
|
|
integer, optional, intent(in) :: itmax, itrace,istop
|
||
|
|
integer, optional, intent(out) :: iter
|
||
|
|
real(kind(1.d0)), optional, intent(out) :: err
|
||
|
|
end subroutine psb_zcgs
|
||
|
|
end interface
|
||
|
|
|
||
|
|
contains
|
||
|
|
|
||
|
|
|
||
|
|
Subroutine mld_dkrylov(method,a,prec,b,x,eps,desc_a,info,&
|
||
|
|
&itmax,iter,err,itrace,irst,istop)
|
||
|
|
|
||
|
|
use psb_base_mod
|
||
|
|
use psb_prec_mod
|
||
|
|
|
||
|
|
character(len=*) :: method
|
||
|
|
Type(psb_dspmat_type), Intent(in) :: a
|
||
|
|
Type(psb_desc_type), Intent(in) :: desc_a
|
||
|
|
type(psb_dprec_type), intent(in) :: prec
|
||
|
|
Real(Kind(1.d0)), Intent(in) :: b(:)
|
||
|
|
Real(Kind(1.d0)), Intent(inout) :: x(:)
|
||
|
|
Real(Kind(1.d0)), Intent(in) :: eps
|
||
|
|
integer, intent(out) :: info
|
||
|
|
Integer, Optional, Intent(in) :: itmax, itrace, irst,istop
|
||
|
|
Integer, Optional, Intent(out) :: iter
|
||
|
|
Real(Kind(1.d0)), Optional, Intent(out) :: err
|
||
|
|
|
||
|
|
integer :: ictxt,me,np,err_act
|
||
|
|
character(len=20) :: name
|
||
|
|
|
||
|
|
info = 0
|
||
|
|
name = 'mld_krylov'
|
||
|
|
call psb_erractionsave(err_act)
|
||
|
|
|
||
|
|
ictxt=psb_cd_get_context(desc_a)
|
||
|
|
|
||
|
|
call psb_info(ictxt, me, np)
|
||
|
|
|
||
|
|
select case(toupper(method))
|
||
|
|
case('CG')
|
||
|
|
call psb_cg(a,prec,b,x,eps,desc_a,info,&
|
||
|
|
&itmax,iter,err,itrace,istop)
|
||
|
|
case('CGS')
|
||
|
|
call psb_cgs(a,prec,b,x,eps,desc_a,info,&
|
||
|
|
&itmax,iter,err,itrace,istop)
|
||
|
|
case('BICG')
|
||
|
|
call psb_bicg(a,prec,b,x,eps,desc_a,info,&
|
||
|
|
&itmax,iter,err,itrace,istop)
|
||
|
|
case('BICGSTAB')
|
||
|
|
call psb_bicgstab(a,prec,b,x,eps,desc_a,info,&
|
||
|
|
&itmax,iter,err,itrace,istop)
|
||
|
|
case('RGMRES')
|
||
|
|
call psb_rgmres(a,prec,b,x,eps,desc_a,info,&
|
||
|
|
&itmax,iter,err,itrace,irst,istop)
|
||
|
|
case('BICGSTABL')
|
||
|
|
call psb_bicgstabl(a,prec,b,x,eps,desc_a,info,&
|
||
|
|
&itmax,iter,err,itrace,irst,istop)
|
||
|
|
case default
|
||
|
|
if (me==0) write(0,*) 'Warning: Unknown method ',method,&
|
||
|
|
& ' in ',name,' defaulting to BiCGSTAB'
|
||
|
|
call psb_bicgstab(a,prec,b,x,eps,desc_a,info,&
|
||
|
|
&itmax,iter,err,itrace,istop)
|
||
|
|
end select
|
||
|
|
|
||
|
|
if(info/=0) then
|
||
|
|
call psb_errpush(info,name)
|
||
|
|
goto 9999
|
||
|
|
end if
|
||
|
|
|
||
|
|
call psb_erractionrestore(err_act)
|
||
|
|
return
|
||
|
|
|
||
|
|
9999 continue
|
||
|
|
call psb_erractionrestore(err_act)
|
||
|
|
if (err_act.eq.psb_act_abort_) then
|
||
|
|
call psb_error(ictxt)
|
||
|
|
return
|
||
|
|
end if
|
||
|
|
|
||
|
|
end subroutine mld_dkrylov
|
||
|
|
|
||
|
|
|
||
|
|
Subroutine mld_zkrylov(method,a,prec,b,x,eps,desc_a,info,&
|
||
|
|
&itmax,iter,err,itrace,irst,istop)
|
||
|
|
use psb_base_mod
|
||
|
|
use psb_prec_mod
|
||
|
|
character(len=*) :: method
|
||
|
|
Type(psb_zspmat_type), Intent(in) :: a
|
||
|
|
Type(psb_desc_type), Intent(in) :: desc_a
|
||
|
|
type(psb_zprec_type), intent(in) :: prec
|
||
|
|
complex(Kind(1.d0)), Intent(in) :: b(:)
|
||
|
|
complex(Kind(1.d0)), Intent(inout) :: x(:)
|
||
|
|
Real(Kind(1.d0)), Intent(in) :: eps
|
||
|
|
integer, intent(out) :: info
|
||
|
|
Integer, Optional, Intent(in) :: itmax, itrace, irst,istop
|
||
|
|
Integer, Optional, Intent(out) :: iter
|
||
|
|
Real(Kind(1.d0)), Optional, Intent(out) :: err
|
||
|
|
|
||
|
|
integer :: ictxt,me,np,err_act
|
||
|
|
character(len=20) :: name
|
||
|
|
|
||
|
|
info = 0
|
||
|
|
name = 'mld_krylov'
|
||
|
|
call psb_erractionsave(err_act)
|
||
|
|
|
||
|
|
|
||
|
|
ictxt=psb_cd_get_context(desc_a)
|
||
|
|
|
||
|
|
call psb_info(ictxt, me, np)
|
||
|
|
|
||
|
|
|
||
|
|
select case(toupper(method))
|
||
|
|
!!$ case('CG')
|
||
|
|
!!$ call psb_cg(a,prec,b,x,eps,desc_a,info,&
|
||
|
|
!!$ &itmax,iter,err,itrace,istop)
|
||
|
|
case('CGS')
|
||
|
|
call psb_cgs(a,prec,b,x,eps,desc_a,info,&
|
||
|
|
&itmax,iter,err,itrace,istop)
|
||
|
|
!!$ case('BICG')
|
||
|
|
!!$ call psb_bicg(a,prec,b,x,eps,desc_a,info,&
|
||
|
|
!!$ &itmax,iter,err,itrace,istop)
|
||
|
|
case('BICGSTAB')
|
||
|
|
call psb_bicgstab(a,prec,b,x,eps,desc_a,info,&
|
||
|
|
& itmax,iter,err,itrace,istop)
|
||
|
|
case('RGMRES')
|
||
|
|
call psb_rgmres(a,prec,b,x,eps,desc_a,info,&
|
||
|
|
& itmax,iter,err,itrace,irst,istop)
|
||
|
|
!!$ case('BICGSTABL')
|
||
|
|
!!$ call psb_bicgstabl(a,prec,b,x,eps,desc_a,info,&
|
||
|
|
!!$ &itmax,iter,err,itrace,irst,istop)
|
||
|
|
case default
|
||
|
|
if (me==0) write(0,*) 'Warning: Unknown method ',method,&
|
||
|
|
& ' in ',name,' defaulting to BiCGSTAB'
|
||
|
|
call psb_bicgstab(a,prec,b,x,eps,desc_a,info,&
|
||
|
|
&itmax,iter,err,itrace,istop)
|
||
|
|
end select
|
||
|
|
|
||
|
|
if(info/=0) then
|
||
|
|
call psb_errpush(info,name)
|
||
|
|
goto 9999
|
||
|
|
end if
|
||
|
|
|
||
|
|
call psb_erractionrestore(err_act)
|
||
|
|
return
|
||
|
|
|
||
|
|
9999 continue
|
||
|
|
call psb_erractionrestore(err_act)
|
||
|
|
if (err_act.eq.psb_act_abort_) then
|
||
|
|
call psb_error(ictxt)
|
||
|
|
return
|
||
|
|
end if
|
||
|
|
|
||
|
|
end subroutine mld_zkrylov
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
end module mld_krylov_mod
|
||
|
|
|
||
|
|
|
||
|
|
|