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psblas3:

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Fixed configry to use mpif90 for F03.
Restructured KRYLOV methods, in synch with psblas2.
psblas3-type-indexed
Salvatore Filippone 15 years ago
parent a614197538
commit e76b1f94da
39 changed files with 2071 additions and 1560 deletions
Show Stats Download Patch File Download Diff File

2
base/modules/Makefile
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@ -5,7 +5,7 @@ UTIL_MODS = psb_string_mod.o \
psb_desc_type.o psb_sort_mod.o psb_serial_mod.o \
psb_base_tools_mod.o psb_s_tools_mod.o psb_d_tools_mod.o\
psb_c_tools_mod.o psb_z_tools_mod.o psb_tools_mod.o \
psi_comm_buffers_mod.o psi_penv_mod.o psi_bcast_mod.o \
psb_penv_mod.o psi_comm_buffers_mod.o psi_penv_mod.o psi_bcast_mod.o \
psi_reduce_mod.o psi_p2p_mod.o psb_error_impl.o \
psb_linmap_type_mod.o psb_linmap_mod.o psb_comm_mod.o\
psb_s_psblas_mod.o psb_c_psblas_mod.o \

2
configure vendored
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@ -7063,7 +7063,7 @@ if test "X$psblas_cv_fc" == X"nag" ; then
F90COPT="$F90COPT -dcfuns -f2003 -wmismatch=mpi_scatterv,mpi_alltoallv,mpi_gatherv,mpi_allgatherv"
EXTRA_OPT="-mismatch_all"
F03COPT="${F90COPT}"
F03="nagfor"
F03="${MPIFC}"
elif test "X$psblas_cv_fc" == X"xlf" ; then
F03="xlf2003_r"
F03COPT="-O3 -qarch=auto -qsuffix=f=f03:cpp=F03 $F03COPT"

2
configure.ac
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@ -428,7 +428,7 @@ if test "X$psblas_cv_fc" == X"nag" ; then
F90COPT="$F90COPT -dcfuns -f2003 -wmismatch=mpi_scatterv,mpi_alltoallv,mpi_gatherv,mpi_allgatherv"
EXTRA_OPT="-mismatch_all"
F03COPT="${F90COPT}"
F03="nagfor"
F03="${MPIFC}"
elif test "X$psblas_cv_fc" == X"xlf" ; then
F03="xlf2003_r"
F03COPT="-O3 -qarch=auto -qsuffix=f=f03:cpp=F03 $F03COPT"

11
krylov/Makefile
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@ -4,8 +4,11 @@ include ../Make.inc
HERE=.
LIBDIR=../lib
MODOBJS= psb_krylov_mod.o
F90OBJS= psb_dcgstab.o psb_dcg.o psb_dcgs.o \
MODOBJS= psb_base_inner_krylov_mod.o \
psb_s_inner_krylov_mod.o psb_c_inner_krylov_mod.o psb_d_inner_krylov_mod.o psb_z_inner_krylov_mod.o \
psb_inner_krylov_mod.o psb_krylov_mod.o
F90OBJS=psb_dkrylov.o psb_skrylov.o psb_ckrylov.o psb_zkrylov.o \
psb_dcgstab.o psb_dcg.o psb_dcgs.o \
psb_dbicg.o psb_dcgstabl.o psb_drgmres.o\
psb_scgstab.o psb_scg.o psb_scgs.o \
psb_sbicg.o psb_scgstabl.o psb_srgmres.o\
@ -16,7 +19,7 @@ F90OBJS= psb_dcgstab.o psb_dcg.o psb_dcgs.o \
OBJS=$(F90OBJS) $(MODOBJS)
LIBMOD=psb_krylov_mod$(.mod)
LOCAL_MODS=$(LIBMOD)
LOCAL_MODS=$(MODOBJS:.o=$(.mod))
LIBNAME=$(METHDLIBNAME)
FINCLUDES=$(FMFLAG)$(LIBDIR) $(FMFLAG).
@ -27,6 +30,8 @@ lib: $(OBJS)
/bin/cp -p $(HERE)/$(LIBNAME) $(LIBDIR)
/bin/cp -p $(LIBMOD) $(LIBDIR)
psb_s_inner_krylov_mod.o psb_c_inner_krylov_mod.o psb_d_inner_krylov_mod.o psb_z_inner_krylov_mod.o: psb_base_inner_krylov_mod.o
psb_inner_krylov_mod.o: psb_s_inner_krylov_mod.o psb_c_inner_krylov_mod.o psb_d_inner_krylov_mod.o psb_z_inner_krylov_mod.o
$(F90OBJS): $(MODOBJS)
$(OBJS): $(LIBDIR)/psb_prec_mod$(.mod) $(LIBDIR)/psb_sparse_mod$(.mod)
veryclean: clean

161
krylov/psb_base_inner_krylov_mod.f90
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@ -0,0 +1,161 @@
!!$
!!$ Parallel Sparse BLAS version 2.2
!!$ (C) Copyright 2006/2007/2008
!!$ 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.
!!$
!!$
!
! File: psb_krylov_mod.f90
! Interfaces for Krylov subspace iterative methods.
!
Module psb_base_inner_krylov_mod
use psb_const_mod
interface psb_end_conv
module procedure psb_d_end_conv
end interface
integer, parameter :: psb_ik_bni_=1, psb_ik_rni_=2, psb_ik_ani_=3
integer, parameter :: psb_ik_xni_=4, psb_ik_bn2_=5, psb_ik_xn2_=6
integer, parameter :: psb_ik_errnum_=7, psb_ik_errden_=8, psb_ik_eps_=9, psb_ik_rn2_=10
integer, parameter :: psb_ik_stopc_=1, psb_ik_trace_=2, psb_ik_itmax_=3
integer, parameter :: psb_ik_ivsz_=16
type psb_itconv_type
integer :: controls(psb_ik_ivsz_)
real(psb_dpk_) :: values(psb_ik_ivsz_)
end type psb_itconv_type
contains
subroutine log_header(methdname)
!use psb_base_mod
implicit none
character(len=*), intent(in) :: methdname
character(len=*), parameter :: fmt='(a18,1x,a4,3(2x,a15))'
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),'Iteration','Error Estimate','Tolerance'
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(psb_dpk_), intent(in) :: errnum, errden, eps
character(len=*), parameter :: fmt='(a18,1x,i4,3(2x,es15.9))'
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
write(*,fmt) adjustl(outname),itx,errnum/errden,eps
else
write(*,fmt) adjustl(outname),itx,errnum,eps
end if
endif
end subroutine log_conv
subroutine log_end(methdname,me,it,errnum,errden,eps,err,iter)
!use psb_base_mod
implicit none
character(len=*), intent(in) :: methdname
integer, intent(in) :: me, it
real(psb_dpk_), intent(in) :: errnum, errden, eps
real(psb_dpk_), optional, intent(out) :: err
integer, optional, intent(out) :: iter
character(len=*), parameter :: fmt='(a,2x,es15.9,1x,a,1x,i4,1x,a)'
character(len=*), parameter :: fmt1='(a,3(2x,es15.9))'
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 error estimate: ',&
& errnum
end if
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 error estimate: ',&
& errnum/errden
end if
endif
if (present(err)) err=errnum/errden
end if
if (present(iter)) iter = it
end subroutine log_end
subroutine psb_d_end_conv(methdname,it,desc_a,stopdat,info,err,iter)
use psb_sparse_mod
implicit none
character(len=*), intent(in) :: methdname
integer, intent(in) :: it
type(psb_desc_type), intent(in) :: desc_a
type(psb_itconv_type) :: stopdat
integer, intent(out) :: info
real(psb_dpk_), optional, intent(out) :: err
integer, optional, intent(out) :: iter
integer :: ictxt, me, np, err_act
real(psb_dpk_) :: errnum, errden, eps
character(len=20) :: name
info = psb_success_
name = 'psb_end_conv'
ictxt = psb_cd_get_context(desc_a)
call psb_info(ictxt,me,np)
errnum = stopdat%values(psb_ik_errnum_)
errden = stopdat%values(psb_ik_errden_)
eps = stopdat%values(psb_ik_eps_)
call log_end(methdname,me,it,errnum,errden,eps,err,iter)
end subroutine psb_d_end_conv
end module psb_base_inner_krylov_mod

191
krylov/psb_c_inner_krylov_mod.f90
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@ -0,0 +1,191 @@
!!$
!!$ Parallel Sparse BLAS version 2.2
!!$ (C) Copyright 2006/2007/2008
!!$ 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.
!!$
!!$
!
! File: psb_krylov_mod.f90
! Interfaces for Krylov subspace iterative methods.
!
Module psb_c_inner_krylov_mod
use psb_base_inner_krylov_mod
interface psb_init_conv
module procedure psb_c_init_conv
end interface
interface psb_check_conv
module procedure psb_c_check_conv
end interface
contains
subroutine psb_c_init_conv(methdname,stopc,trace,itmax,a,b,eps,desc_a,stopdat,info)
use psb_sparse_mod
implicit none
character(len=*), intent(in) :: methdname
integer, intent(in) :: stopc, trace, itmax
type(psb_c_sparse_mat), intent(in) :: a
complex(psb_spk_), intent(in) :: b(:)
real(psb_spk_), intent(in) :: eps
type(psb_desc_type), intent(in) :: desc_a
type(psb_itconv_type) :: stopdat
integer, intent(out) :: info
integer :: ictxt, me, np, err_act
character(len=20) :: name
info = psb_success_
name = 'psb_init_conv'
call psb_erractionsave(err_act)
ictxt=psb_cd_get_context(desc_a)
call psb_info(ictxt, me, np)
stopdat%controls(:) = 0
stopdat%values(:) = 0.0d0
stopdat%controls(psb_ik_stopc_) = stopc
stopdat%controls(psb_ik_trace_) = trace
stopdat%controls(psb_ik_itmax_) = itmax
select case(stopdat%controls(psb_ik_stopc_))
case (1)
stopdat%values(psb_ik_ani_) = psb_spnrmi(a,desc_a,info)
if (info == psb_success_) stopdat%values(psb_ik_bni_) = psb_geamax(b,desc_a,info)
case (2)
stopdat%values(psb_ik_bn2_) = psb_genrm2(b,desc_a,info)
case default
info=psb_err_invalid_istop_
call psb_errpush(info,name,i_err=(/stopc,0,0,0,0/))
goto 9999
end select
if (info /= psb_success_) then
call psb_errpush(psb_err_internal_error_,name,a_err="Init conv check data")
goto 9999
end if
stopdat%values(psb_ik_eps_) = eps
stopdat%values(psb_ik_errnum_) = dzero
stopdat%values(psb_ik_errden_) = done
if ((stopdat%controls(psb_ik_trace_) > 0).and. (me == 0))&
& call log_header(methdname)
call psb_erractionrestore(err_act)
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_c_init_conv
function psb_c_check_conv(methdname,it,x,r,desc_a,stopdat,info)
use psb_sparse_mod
implicit none
character(len=*), intent(in) :: methdname
integer, intent(in) :: it
complex(psb_spk_), intent(in) :: x(:), r(:)
type(psb_desc_type), intent(in) :: desc_a
type(psb_itconv_type) :: stopdat
logical :: psb_c_check_conv
integer, intent(out) :: info
integer :: ictxt, me, np, err_act
character(len=20) :: name
info = psb_success_
name = 'psb_check_conv'
call psb_erractionsave(err_act)
ictxt = psb_cd_get_context(desc_a)
call psb_info(ictxt,me,np)
psb_c_check_conv = .false.
select case(stopdat%controls(psb_ik_stopc_))
case(1)
stopdat%values(psb_ik_rni_) = psb_geamax(r,desc_a,info)
if (info == psb_success_) stopdat%values(psb_ik_xni_) = psb_geamax(x,desc_a,info)
stopdat%values(psb_ik_errnum_) = stopdat%values(psb_ik_rni_)
stopdat%values(psb_ik_errden_) = &
& (stopdat%values(psb_ik_ani_)*stopdat%values(psb_ik_xni_)+stopdat%values(psb_ik_bni_))
case(2)
stopdat%values(psb_ik_rn2_) = psb_genrm2(r,desc_a,info)
stopdat%values(psb_ik_errnum_) = stopdat%values(psb_ik_rn2_)
stopdat%values(psb_ik_errden_) = stopdat%values(psb_ik_bn2_)
case default
info=psb_err_internal_error_
call psb_errpush(info,name,a_err="Control data in stopdat messed up!")
goto 9999
end select
if (info /= psb_success_) then
info=psb_err_from_subroutine_non_
call psb_errpush(info,name)
goto 9999
end if
if (stopdat%values(psb_ik_errden_) == dzero) then
psb_c_check_conv = (stopdat%values(psb_ik_errnum_) <= stopdat%values(psb_ik_eps_))
else
psb_c_check_conv = &
& (stopdat%values(psb_ik_errnum_) <= stopdat%values(psb_ik_eps_)*stopdat%values(psb_ik_errden_))
end if
psb_c_check_conv = (psb_c_check_conv.or.(stopdat%controls(psb_ik_itmax_) <= it))
if ( (stopdat%controls(psb_ik_trace_) > 0).and.&
& ((mod(it,stopdat%controls(psb_ik_trace_)) == 0).or.psb_c_check_conv)) then
call log_conv(methdname,me,it,1,stopdat%values(psb_ik_errnum_),&
& stopdat%values(psb_ik_errden_),stopdat%values(psb_ik_eps_))
end if
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act == psb_act_abort_) then
call psb_error(ictxt)
return
end if
end function psb_c_check_conv
end module psb_c_inner_krylov_mod

3
krylov/psb_cbicg.f90
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@ -96,7 +96,8 @@
subroutine psb_cbicg(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_cbicg
use psb_inner_krylov_mod
use psb_krylov_mod
implicit none
!!$ parameters

3
krylov/psb_ccg.f90
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@ -98,7 +98,8 @@
subroutine psb_ccg(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_ccg
use psb_inner_krylov_mod
use psb_krylov_mod
implicit none
!!$ Parameters

3
krylov/psb_ccgs.f90
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@ -95,7 +95,8 @@
Subroutine psb_ccgs(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_ccgs
use psb_inner_krylov_mod
use psb_krylov_mod
implicit none
!!$ parameters

3
krylov/psb_ccgstab.f90
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@ -96,7 +96,8 @@
subroutine psb_ccgstab(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_ccgstab
use psb_inner_krylov_mod
use psb_krylov_mod
Implicit None
!!$ parameters
Type(psb_c_sparse_mat), Intent(in) :: a

3
krylov/psb_ccgstabl.f90
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@ -106,7 +106,8 @@
Subroutine psb_ccgstabl(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,irst,istop)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_ccgstabl
use psb_inner_krylov_mod
use psb_krylov_mod
implicit none
!!$ parameters

246
krylov/psb_ckrylov.f90
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@ -0,0 +1,246 @@
!!$
!!$ Parallel Sparse BLAS version 2.2
!!$ (C) Copyright 2006/2007/2008
!!$ 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.
!!$
!!$
!
! File: psb_krylov_mod.f90
! Interfaces for Krylov subspace iterative methods.
!
!
! Subroutine: psb_ckrylov
!
! Front-end for the Krylov subspace iterations, complexversion
!
! Arguments:
!
! methd - character The specific method; can take the values:
! CG
! CGS
! BICG
! BICGSTAB
! BICGSTABL
! RGMRES
!
! a - type(psb_c_sparse_mat) Input: sparse matrix containing A.
! prec - class(psb_cprec_type) Input: preconditioner
! b - complex,dimension(:) Input: vector containing the
! right hand side B
! x - complex,dimension(:) Input/Output: vector containing the
! initial guess and final solution X.
! eps - real Input: Stopping tolerance; the iteration is
! stopped when the error
! estimate |err| <= eps
!
! desc_a - type(psb_desc_type). Input: The communication descriptor.
! info - integer. Output: Return code
!
! itmax - integer(optional) Input: maximum number of iterations to be
! performed.
! iter - integer(optional) Output: how many iterations have been
! performed.
! err - real (optional) Output: error estimate on exit
! itrace - integer(optional) Input: print an informational message
! with the error estimate every itrace
! iterations
! irst - integer(optional) Input: restart parameter for RGMRES and
! BICGSTAB(L) methods
! istop - integer(optional) Input: stopping criterion, or how
! to estimate the error.
! 1: err = |r|/|b|
! 2: err = |r|/(|a||x|+|b|)
! where r is the (preconditioned, recursive
! estimate of) residual
!
Subroutine psb_ckrylov(method,a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,irst,istop)
use psb_sparse_mod
use psb_prec_mod,only : psb_sprec_type, psb_dprec_type, psb_cprec_type, psb_zprec_type
use psb_krylov_mod, psb_protect_name => psb_ckrylov
character(len=*) :: method
Type(psb_c_sparse_mat), Intent(in) :: a
Type(psb_desc_type), Intent(in) :: desc_a
class(psb_cprec_type), intent(in) :: prec
complex(psb_spk_), Intent(in) :: b(:)
complex(psb_spk_), Intent(inout) :: x(:)
Real(psb_spk_), Intent(in) :: eps
integer, intent(out) :: info
Integer, Optional, Intent(in) :: itmax, itrace, irst,istop
Integer, Optional, Intent(out) :: iter
Real(psb_spk_), Optional, Intent(out) :: err
interface
subroutine psb_ccg(a,prec,b,x,eps,&
& desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod, only : psb_desc_type, psb_c_sparse_mat, psb_spk_
use psb_prec_mod, only : psb_cprec_type
type(psb_c_sparse_mat), intent(in) :: a
type(psb_desc_type), intent(in) :: desc_a
complex(psb_spk_), intent(in) :: b(:)
complex(psb_spk_), intent(inout) :: x(:)
real(psb_spk_), intent(in) :: eps
class(psb_cprec_type), intent(in) :: prec
integer, intent(out) :: info
integer, optional, intent(in) :: itmax, itrace,istop
integer, optional, intent(out) :: iter
real(psb_spk_), optional, intent(out) :: err
end subroutine psb_ccg
subroutine psb_cbicg(a,prec,b,x,eps,&
& desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod, only : psb_desc_type, psb_c_sparse_mat, psb_spk_
use psb_prec_mod, only : psb_cprec_type
type(psb_c_sparse_mat), intent(in) :: a
type(psb_desc_type), intent(in) :: desc_a
complex(psb_spk_), intent(in) :: b(:)
complex(psb_spk_), intent(inout) :: x(:)
real(psb_spk_), intent(in) :: eps
class(psb_cprec_type), intent(in) :: prec
integer, intent(out) :: info
integer, optional, intent(in) :: itmax, itrace,istop
integer, optional, intent(out) :: iter
real(psb_spk_), optional, intent(out) :: err
end subroutine psb_cbicg
subroutine psb_ccgstab(a,prec,b,x,eps,&
& desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod, only : psb_desc_type, psb_c_sparse_mat, psb_spk_
use psb_prec_mod, only : psb_cprec_type
type(psb_c_sparse_mat), intent(in) :: a
type(psb_desc_type), intent(in) :: desc_a
complex(psb_spk_), intent(in) :: b(:)
complex(psb_spk_), intent(inout) :: x(:)
real(psb_spk_), intent(in) :: eps
class(psb_cprec_type), intent(in) :: prec
integer, intent(out) :: info
integer, optional, intent(in) :: itmax, itrace,istop
integer, optional, intent(out) :: iter
real(psb_spk_), optional, intent(out) :: err
end subroutine psb_ccgstab
Subroutine psb_ccgstabl(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,irst,istop)
use psb_sparse_mod, only : psb_desc_type, psb_c_sparse_mat, psb_spk_
use psb_prec_mod, only : psb_cprec_type
Type(psb_c_sparse_mat), Intent(in) :: a
Type(psb_desc_type), Intent(in) :: desc_a
class(psb_cprec_type), intent(in) :: prec
complex(psb_spk_), Intent(in) :: b(:)
complex(psb_spk_), Intent(inout) :: x(:)
Real(psb_spk_), Intent(in) :: eps
integer, intent(out) :: info
Integer, Optional, Intent(in) :: itmax, itrace, irst,istop
Integer, Optional, Intent(out) :: iter
Real(psb_spk_), Optional, Intent(out) :: err
end subroutine psb_ccgstabl
Subroutine psb_crgmres(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,irst,istop)
use psb_sparse_mod, only : psb_desc_type, psb_c_sparse_mat, psb_spk_
use psb_prec_mod, only : psb_cprec_type
Type(psb_c_sparse_mat), Intent(in) :: a
Type(psb_desc_type), Intent(in) :: desc_a
class(psb_cprec_type), intent(in) :: prec
complex(psb_spk_), Intent(in) :: b(:)
complex(psb_spk_), Intent(inout) :: x(:)
Real(psb_spk_), Intent(in) :: eps
integer, intent(out) :: info
Integer, Optional, Intent(in) :: itmax, itrace, irst,istop
Integer, Optional, Intent(out) :: iter
Real(psb_spk_), Optional, Intent(out) :: err
end subroutine psb_crgmres
subroutine psb_ccgs(a,prec,b,x,eps,&
& desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod, only : psb_desc_type, psb_c_sparse_mat, psb_spk_
use psb_prec_mod, only : psb_cprec_type
type(psb_c_sparse_mat), intent(in) :: a
type(psb_desc_type), intent(in) :: desc_a
complex(psb_spk_), intent(in) :: b(:)
complex(psb_spk_), intent(inout) :: x(:)
real(psb_spk_), intent(in) :: eps
class(psb_cprec_type), intent(in) :: prec
integer, intent(out) :: info
integer, optional, intent(in) :: itmax, itrace,istop
integer, optional, intent(out) :: iter
real(psb_spk_), optional, intent(out) :: err
end subroutine psb_ccgs
end interface
integer :: ictxt,me,np,err_act
character(len=20) :: name
info = psb_success_
name = 'psb_krylov'
call psb_erractionsave(err_act)
ictxt=psb_cd_get_context(desc_a)
call psb_info(ictxt, me, np)
select case(psb_toupper(method))
case('CG')
call psb_ccg(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,istop)
case('CGS')
call psb_ccgs(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,istop)
case('BICG')
call psb_cbicg(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,istop)
case('BICGSTAB')
call psb_ccgstab(a,prec,b,x,eps,desc_a,info,&
& itmax,iter,err,itrace,istop)
case('RGMRES')
call psb_crgmres(a,prec,b,x,eps,desc_a,info,&
& itmax,iter,err,itrace,irst,istop)
case('BICGSTABL')
call psb_ccgstabl(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,irst,istop)
case default
if (me == 0) write(0,*) trim(name),': Warning: Unknown method ',method,&
& ', defaulting to BiCGSTAB'
call psb_ccgstab(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,istop)
end select
if(info /= psb_success_) 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 == psb_act_abort_) then
call psb_error(ictxt)
return
end if
end subroutine psb_ckrylov

3
krylov/psb_crgmres.f90
Unescape Escape View File

@ -108,7 +108,8 @@
Subroutine psb_crgmres(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,irst,istop)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_crgmres
use psb_inner_krylov_mod
use psb_krylov_mod
implicit none
!!$ Parameters

193
krylov/psb_d_inner_krylov_mod.f90
Unescape Escape View File

@ -0,0 +1,193 @@
!!$
!!$ Parallel Sparse BLAS version 2.2
!!$ (C) Copyright 2006/2007/2008
!!$ 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.
!!$
!!$
!
! File: psb_krylov_mod.f90
! Interfaces for Krylov subspace iterative methods.
!
Module psb_d_inner_krylov_mod
use psb_base_inner_krylov_mod
interface psb_init_conv
module procedure psb_d_init_conv
end interface
interface psb_check_conv
module procedure psb_d_check_conv
end interface
contains
subroutine psb_d_init_conv(methdname,stopc,trace,itmax,a,b,eps,desc_a,stopdat,info)
use psb_sparse_mod
implicit none
character(len=*), intent(in) :: methdname
integer, intent(in) :: stopc, trace,itmax
type(psb_d_sparse_mat), intent(in) :: a
real(psb_dpk_), intent(in) :: b(:), eps
type(psb_desc_type), intent(in) :: desc_a
type(psb_itconv_type) :: stopdat
integer, intent(out) :: info
integer :: ictxt, me, np, err_act
character(len=20) :: name
info = psb_success_
name = 'psb_init_conv'
call psb_erractionsave(err_act)
ictxt=psb_cd_get_context(desc_a)
call psb_info(ictxt, me, np)
stopdat%controls(:) = 0
stopdat%values(:) = 0.0d0
stopdat%controls(psb_ik_stopc_) = stopc
stopdat%controls(psb_ik_trace_) = trace
stopdat%controls(psb_ik_itmax_) = itmax
select case(stopdat%controls(psb_ik_stopc_))
case (1)
stopdat%values(psb_ik_ani_) = psb_spnrmi(a,desc_a,info)
if (info == psb_success_) stopdat%values(psb_ik_bni_) = psb_geamax(b,desc_a,info)
case (2)
stopdat%values(psb_ik_bn2_) = psb_genrm2(b,desc_a,info)
case default
info=psb_err_invalid_istop_
call psb_errpush(info,name,i_err=(/stopc,0,0,0,0/))
goto 9999
end select
if (info /= psb_success_) then
call psb_errpush(psb_err_internal_error_,name,a_err="Init conv check data")
goto 9999
end if
stopdat%values(psb_ik_eps_) = eps
stopdat%values(psb_ik_errnum_) = dzero
stopdat%values(psb_ik_errden_) = done
if ((stopdat%controls(psb_ik_trace_) > 0).and. (me == 0))&
& call log_header(methdname)
call psb_erractionrestore(err_act)
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_d_init_conv
function psb_d_check_conv(methdname,it,x,r,desc_a,stopdat,info)
use psb_sparse_mod
implicit none
character(len=*), intent(in) :: methdname
integer, intent(in) :: it
real(psb_dpk_), intent(in) :: x(:), r(:)
type(psb_desc_type), intent(in) :: desc_a
type(psb_itconv_type) :: stopdat
logical :: psb_d_check_conv
integer, intent(out) :: info
integer :: ictxt, me, np, err_act
character(len=20) :: name
info = psb_success_
name = 'psb_check_conv'
call psb_erractionsave(err_act)
ictxt = psb_cd_get_context(desc_a)
call psb_info(ictxt,me,np)
psb_d_check_conv = .false.
select case(stopdat%controls(psb_ik_stopc_))
case(1)
stopdat%values(psb_ik_rni_) = psb_geamax(r,desc_a,info)
if (info == psb_success_) stopdat%values(psb_ik_xni_) = psb_geamax(x,desc_a,info)
stopdat%values(psb_ik_errnum_) = stopdat%values(psb_ik_rni_)
stopdat%values(psb_ik_errden_) = &
& (stopdat%values(psb_ik_ani_)*stopdat%values(psb_ik_xni_)+stopdat%values(psb_ik_bni_))
case(2)
stopdat%values(psb_ik_rn2_) = psb_genrm2(r,desc_a,info)
stopdat%values(psb_ik_errnum_) = stopdat%values(psb_ik_rn2_)
stopdat%values(psb_ik_errden_) = stopdat%values(psb_ik_bn2_)
case default
info=psb_err_internal_error_
call psb_errpush(info,name,a_err="Control data in stopdat messed up!")
goto 9999
end select
if (info /= psb_success_) then
info=psb_err_from_subroutine_non_
call psb_errpush(info,name)
goto 9999
end if
if (stopdat%values(psb_ik_errden_) == dzero) then
psb_d_check_conv = (stopdat%values(psb_ik_errnum_) <= stopdat%values(psb_ik_eps_))
else
psb_d_check_conv = &
& (stopdat%values(psb_ik_errnum_) <= stopdat%values(psb_ik_eps_)*stopdat%values(psb_ik_errden_))
end if
psb_d_check_conv = (psb_d_check_conv.or.(stopdat%controls(psb_ik_itmax_) <= it))
if ( (stopdat%controls(psb_ik_trace_) > 0).and.&
& ((mod(it,stopdat%controls(psb_ik_trace_)) == 0).or.psb_d_check_conv)) then
call log_conv(methdname,me,it,1,stopdat%values(psb_ik_errnum_),&
& stopdat%values(psb_ik_errden_),stopdat%values(psb_ik_eps_))
end if
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act == psb_act_abort_) then
call psb_error(ictxt)
return
end if
end function psb_d_check_conv
end module psb_d_inner_krylov_mod

3
krylov/psb_dbicg.f90
Unescape Escape View File

@ -97,7 +97,8 @@
subroutine psb_dbicg(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_dbicg
use psb_inner_krylov_mod
use psb_krylov_mod
implicit none
type(psb_d_sparse_mat), intent(in) :: a

3
krylov/psb_dcg.F90
Unescape Escape View File

@ -98,7 +98,8 @@
subroutine psb_dcg(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop,cond)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_dcg
use psb_inner_krylov_mod
use psb_krylov_mod
implicit none
type(psb_d_sparse_mat), intent(in) :: a

3
krylov/psb_dcgs.f90
Unescape Escape View File

@ -97,7 +97,8 @@
Subroutine psb_dcgs(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_dcgs
use psb_inner_krylov_mod
use psb_krylov_mod
implicit none
type(psb_d_sparse_mat), intent(in) :: a

3
krylov/psb_dcgstab.F90
Unescape Escape View File

@ -97,7 +97,8 @@
Subroutine psb_dcgstab(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_dcgstab
use psb_inner_krylov_mod
use psb_krylov_mod
implicit none
type(psb_d_sparse_mat), intent(in) :: a

3
krylov/psb_dcgstabl.f90
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@ -106,7 +106,8 @@
Subroutine psb_dcgstabl(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,irst,istop)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_dcgstabl
use psb_inner_krylov_mod
use psb_krylov_mod
implicit none
type(psb_d_sparse_mat), intent(in) :: a

244
krylov/psb_dkrylov.f90
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@ -0,0 +1,244 @@
!!$
!!$ Parallel Sparse BLAS version 2.2
!!$ (C) Copyright 2006/2007/2008
!!$ 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.
!!$
!!$
!
! File: psb_krylov_mod.f90
! Interfaces for Krylov subspace iterative methods.
! Subroutine: psb_dkrylov
!
! Front-end for the Krylov subspace iterations, real version
!
! Arguments:
!
! methd - character The specific method; can take the values:
! CG
! CGS
! BICG
! BICGSTAB
! BICGSTABL
! RGMRES
!
! a - type(psb_d_sparse_mat) Input: sparse matrix containing A.
! prec - class(psb_dprec_type) Input: preconditioner
! b - real,dimension(:) Input: vector containing the
! right hand side B
! x - real,dimension(:) Input/Output: vector containing the
! initial guess and final solution X.
! eps - real Input: Stopping tolerance; the iteration is
! stopped when the error
! estimate |err| <= eps
! desc_a - type(psb_desc_type). Input: The communication descriptor.
! info - integer. Output: Return code
!
! itmax - integer(optional) Input: maximum number of iterations to be
! performed.
! iter - integer(optional) Output: how many iterations have been
! performed.
! err - real (optional) Output: error estimate on exit
! itrace - integer(optional) Input: print an informational message
! with the error estimate every itrace
! iterations
! irst - integer(optional) Input: restart parameter for RGMRES and
! BICGSTAB(L) methods
! istop - integer(optional) Input: stopping criterion, or how
! to estimate the error.
! 1: err = |r|/|b|
! 2: err = |r|/(|a||x|+|b|)
! where r is the (preconditioned, recursive
! estimate of) residual
!
Subroutine psb_dkrylov(method,a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,irst,istop,cond)
use psb_sparse_mod
use psb_prec_mod,only : psb_sprec_type, psb_dprec_type, psb_cprec_type, psb_zprec_type
use psb_krylov_mod, psb_protect_name => psb_dkrylov
character(len=*) :: method
Type(psb_d_sparse_mat), Intent(in) :: a
Type(psb_desc_type), Intent(in) :: desc_a
class(psb_dprec_type), intent(in) :: prec
Real(psb_dpk_), Intent(in) :: b(:)
Real(psb_dpk_), Intent(inout) :: x(:)
Real(psb_dpk_), Intent(in) :: eps
integer, intent(out) :: info
Integer, Optional, Intent(in) :: itmax, itrace, irst,istop
Integer, Optional, Intent(out) :: iter
Real(psb_dpk_), Optional, Intent(out) :: err,cond
interface
subroutine psb_dcg(a,prec,b,x,eps,&
& desc_a,info,itmax,iter,err,itrace,istop,cond)
use psb_sparse_mod, only : psb_desc_type, psb_d_sparse_mat, psb_dpk_
use psb_prec_mod, only : psb_dprec_type
type(psb_d_sparse_mat), intent(in) :: a
type(psb_desc_type), intent(in) :: desc_a
real(psb_dpk_), intent(in) :: b(:)
real(psb_dpk_), intent(inout) :: x(:)
real(psb_dpk_), intent(in) :: eps
class(psb_dprec_type), intent(in) :: prec
integer, intent(out) :: info
integer, optional, intent(in) :: itmax, itrace,istop
integer, optional, intent(out) :: iter
real(psb_dpk_), optional, intent(out) :: err,cond
end subroutine psb_dcg
subroutine psb_dbicg(a,prec,b,x,eps,&
& desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod, only : psb_desc_type, psb_d_sparse_mat, psb_dpk_
use psb_prec_mod, only : psb_dprec_type
type(psb_d_sparse_mat), intent(in) :: a
type(psb_desc_type), intent(in) :: desc_a
real(psb_dpk_), intent(in) :: b(:)
real(psb_dpk_), intent(inout) :: x(:)
real(psb_dpk_), intent(in) :: eps
class(psb_dprec_type), intent(in) :: prec
integer, intent(out) :: info
integer, optional, intent(in) :: itmax, itrace,istop
integer, optional, intent(out) :: iter
real(psb_dpk_), optional, intent(out) :: err
end subroutine psb_dbicg
subroutine psb_dcgstab(a,prec,b,x,eps,&
& desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod, only : psb_desc_type, psb_d_sparse_mat, psb_dpk_
use psb_prec_mod, only : psb_dprec_type
type(psb_d_sparse_mat), intent(in) :: a
type(psb_desc_type), intent(in) :: desc_a
real(psb_dpk_), intent(in) :: b(:)
real(psb_dpk_), intent(inout) :: x(:)
real(psb_dpk_), intent(in) :: eps
class(psb_dprec_type), intent(in) :: prec
integer, intent(out) :: info
integer, optional, intent(in) :: itmax, itrace,istop
integer, optional, intent(out) :: iter
real(psb_dpk_), optional, intent(out) :: err
end subroutine psb_dcgstab
Subroutine psb_dcgstabl(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err, itrace,irst,istop)
use psb_sparse_mod, only : psb_desc_type, psb_d_sparse_mat, psb_dpk_
use psb_prec_mod, only : psb_dprec_type
Type(psb_d_sparse_mat), Intent(in) :: a
Type(psb_desc_type), Intent(in) :: desc_a
class(psb_dprec_type), intent(in) :: prec
Real(psb_dpk_), Intent(in) :: b(:)
Real(psb_dpk_), Intent(inout) :: x(:)
Real(psb_dpk_), Intent(in) :: eps
integer, intent(out) :: info
Integer, Optional, Intent(in) :: itmax, itrace, irst,istop
Integer, Optional, Intent(out) :: iter
Real(psb_dpk_), Optional, Intent(out) :: err
end subroutine psb_dcgstabl
Subroutine psb_drgmres(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,irst,istop)
use psb_sparse_mod, only : psb_desc_type, psb_d_sparse_mat, psb_dpk_
use psb_prec_mod, only : psb_dprec_type
Type(psb_d_sparse_mat), Intent(in) :: a
Type(psb_desc_type), Intent(in) :: desc_a
class(psb_dprec_type), intent(in) :: prec
Real(psb_dpk_), Intent(in) :: b(:)
Real(psb_dpk_), Intent(inout) :: x(:)
Real(psb_dpk_), Intent(in) :: eps
integer, intent(out) :: info
Integer, Optional, Intent(in) :: itmax, itrace, irst,istop
Integer, Optional, Intent(out) :: iter
Real(psb_dpk_), Optional, Intent(out) :: err
end subroutine psb_drgmres
subroutine psb_dcgs(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,istop)
use psb_sparse_mod, only : psb_desc_type, psb_d_sparse_mat, psb_dpk_
use psb_prec_mod, only : psb_dprec_type
type(psb_d_sparse_mat), intent(in) :: a
type(psb_desc_type), intent(in) :: desc_a
class(psb_dprec_type), intent(in) :: prec
real(psb_dpk_), intent(in) :: b(:)
real(psb_dpk_), intent(inout) :: x(:)
real(psb_dpk_), intent(in) :: eps
integer, intent(out) :: info
integer, optional, intent(in) :: itmax, itrace,istop
integer, optional, intent(out) :: iter
real(psb_dpk_), optional, intent(out) :: err
end subroutine psb_dcgs
end interface
integer :: ictxt,me,np,err_act
character(len=20) :: name
info = psb_success_
name = 'psb_krylov'
call psb_erractionsave(err_act)
ictxt=psb_cd_get_context(desc_a)
call psb_info(ictxt, me, np)
select case(psb_toupper(method))
case('CG')
call psb_dcg(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,istop,cond)
case('CGS')
call psb_dcgs(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,istop)
case('BICG')
call psb_dbicg(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,istop)
case('BICGSTAB')
call psb_dcgstab(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,istop)
case('RGMRES')
call psb_drgmres(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,irst,istop)
case('BICGSTABL')
call psb_dcgstabl(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,irst,istop)
case default
if (me == 0) write(0,*) trim(name),': Warning: Unknown method ',method,&
& ', defaulting to BiCGSTAB'
call psb_dcgstab(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,istop)
end select
if(info /= psb_success_) 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 == psb_act_abort_) then
call psb_error(ictxt)
return
end if
end subroutine psb_dkrylov

3
krylov/psb_drgmres.f90
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@ -109,7 +109,8 @@
subroutine psb_drgmres(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,irst,istop)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_drgmres
use psb_inner_krylov_mod
use psb_krylov_mod
implicit none
type(psb_d_sparse_mat), intent(in) :: a

41
krylov/psb_inner_krylov_mod.f90
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!!$
!!$ Parallel Sparse BLAS version 2.2
!!$ (C) Copyright 2006/2007/2008
!!$ 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.
!!$
!!$
!
! File: psb_krylov_mod.f90
! Interfaces for Krylov subspace iterative methods.
!
module psb_inner_krylov_mod
use psb_s_inner_krylov_mod
use psb_d_inner_krylov_mod
use psb_c_inner_krylov_mod
use psb_z_inner_krylov_mod
end module psb_inner_krylov_mod

1584
krylov/psb_krylov_mod.f90
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192
krylov/psb_s_inner_krylov_mod.f90
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@ -0,0 +1,192 @@
!!$
!!$ Parallel Sparse BLAS version 2.2
!!$ (C) Copyright 2006/2007/2008
!!$ 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.
!!$
!!$
!
! File: psb_krylov_mod.f90
! Interfaces for Krylov subspace iterative methods.
!
Module psb_s_inner_krylov_mod
use psb_base_inner_krylov_mod
interface psb_init_conv
module procedure psb_s_init_conv
end interface
interface psb_check_conv
module procedure psb_s_check_conv
end interface
contains
subroutine psb_s_init_conv(methdname,stopc,trace,itmax,a,b,eps,desc_a,stopdat,info)
use psb_sparse_mod
implicit none
character(len=*), intent(in) :: methdname
integer, intent(in) :: stopc, trace,itmax
type(psb_s_sparse_mat), intent(in) :: a
real(psb_spk_), intent(in) :: b(:), eps
type(psb_desc_type), intent(in) :: desc_a
type(psb_itconv_type) :: stopdat
integer, intent(out) :: info
integer :: ictxt, me, np, err_act
character(len=20) :: name
info = psb_success_
name = 'psb_init_conv'
call psb_erractionsave(err_act)
ictxt=psb_cd_get_context(desc_a)
call psb_info(ictxt, me, np)
stopdat%controls(:) = 0
stopdat%values(:) = 0.0d0
stopdat%controls(psb_ik_stopc_) = stopc
stopdat%controls(psb_ik_trace_) = trace
stopdat%controls(psb_ik_itmax_) = itmax
select case(stopdat%controls(psb_ik_stopc_))
case (1)
stopdat%values(psb_ik_ani_) = psb_spnrmi(a,desc_a,info)
if (info == psb_success_) stopdat%values(psb_ik_bni_) = psb_geamax(b,desc_a,info)
case (2)
stopdat%values(psb_ik_bn2_) = psb_genrm2(b,desc_a,info)
case default
info=psb_err_invalid_istop_
call psb_errpush(info,name,i_err=(/stopc,0,0,0,0/))
goto 9999
end select
if (info /= psb_success_) then
call psb_errpush(psb_err_internal_error_,name,a_err="Init conv check data")
goto 9999
end if
stopdat%values(psb_ik_eps_) = eps
stopdat%values(psb_ik_errnum_) = dzero
stopdat%values(psb_ik_errden_) = done
if ((stopdat%controls(psb_ik_trace_) > 0).and. (me == 0))&
& call log_header(methdname)
call psb_erractionrestore(err_act)
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_s_init_conv
function psb_s_check_conv(methdname,it,x,r,desc_a,stopdat,info)
use psb_sparse_mod
implicit none
character(len=*), intent(in) :: methdname
integer, intent(in) :: it
real(psb_spk_), intent(in) :: x(:), r(:)
type(psb_desc_type), intent(in) :: desc_a
type(psb_itconv_type) :: stopdat
logical :: psb_s_check_conv
integer, intent(out) :: info
integer :: ictxt, me, np, err_act
character(len=20) :: name
info = psb_success_
name = 'psb_check_conv'
call psb_erractionsave(err_act)
ictxt = psb_cd_get_context(desc_a)
call psb_info(ictxt,me,np)
psb_s_check_conv = .false.
select case(stopdat%controls(psb_ik_stopc_))
case(1)
stopdat%values(psb_ik_rni_) = psb_geamax(r,desc_a,info)
if (info == psb_success_) stopdat%values(psb_ik_xni_) = psb_geamax(x,desc_a,info)
stopdat%values(psb_ik_errnum_) = stopdat%values(psb_ik_rni_)
stopdat%values(psb_ik_errden_) = &
& (stopdat%values(psb_ik_ani_)*stopdat%values(psb_ik_xni_)+stopdat%values(psb_ik_bni_))
case(2)
stopdat%values(psb_ik_rn2_) = psb_genrm2(r,desc_a,info)
stopdat%values(psb_ik_errnum_) = stopdat%values(psb_ik_rn2_)
stopdat%values(psb_ik_errden_) = stopdat%values(psb_ik_bn2_)
case default
info=psb_err_internal_error_
call psb_errpush(info,name,a_err="Control data in stopdat messed up!")
goto 9999
end select
if (info /= psb_success_) then
info=psb_err_from_subroutine_non_
call psb_errpush(info,name)
goto 9999
end if
if (stopdat%values(psb_ik_errden_) == dzero) then
psb_s_check_conv = (stopdat%values(psb_ik_errnum_) <= stopdat%values(psb_ik_eps_))
else
psb_s_check_conv = &
& (stopdat%values(psb_ik_errnum_) <= stopdat%values(psb_ik_eps_)*stopdat%values(psb_ik_errden_))
end if
psb_s_check_conv = (psb_s_check_conv.or.(stopdat%controls(psb_ik_itmax_) <= it))
if ( (stopdat%controls(psb_ik_trace_) > 0).and.&
& ((mod(it,stopdat%controls(psb_ik_trace_)) == 0).or.psb_s_check_conv)) then
call log_conv(methdname,me,it,1,stopdat%values(psb_ik_errnum_),&
& stopdat%values(psb_ik_errden_),stopdat%values(psb_ik_eps_))
end if
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act == psb_act_abort_) then
call psb_error(ictxt)
return
end if
end function psb_s_check_conv
end module psb_s_inner_krylov_mod

3
krylov/psb_sbicg.f90
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@ -97,7 +97,8 @@
subroutine psb_sbicg(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_sbicg
use psb_inner_krylov_mod
use psb_krylov_mod
implicit none
!!$ parameters

3
krylov/psb_scg.F90
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@ -98,7 +98,8 @@
subroutine psb_scg(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop,cond)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_scg
use psb_inner_krylov_mod
use psb_krylov_mod
implicit none
!!$ Parameters

3
krylov/psb_scgs.f90
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@ -97,7 +97,8 @@
Subroutine psb_scgs(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_scgs
use psb_inner_krylov_mod
use psb_krylov_mod
implicit none
!!$ parameters

3
krylov/psb_scgstab.F90
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@ -97,7 +97,8 @@
Subroutine psb_scgstab(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_scgstab
use psb_inner_krylov_mod
use psb_krylov_mod
Implicit None
!!$ parameters
Type(psb_s_sparse_mat), Intent(in) :: a

3
krylov/psb_scgstabl.f90
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@ -106,7 +106,8 @@
Subroutine psb_scgstabl(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,irst,istop)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_scgstabl
use psb_inner_krylov_mod
use psb_krylov_mod
implicit none
!!$ parameters

249
krylov/psb_skrylov.f90
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@ -0,0 +1,249 @@
!!$
!!$ Parallel Sparse BLAS version 2.2
!!$ (C) Copyright 2006/2007/2008
!!$ 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.
!!$
!!$
!
! File: psb_krylov_mod.f90
! Interfaces for Krylov subspace iterative methods.
! Subroutine: psb_skrylov
!
! Front-end for the Krylov subspace iterations, real version
!
! Arguments:
!
! methd - character The specific method; can take the values:
! CG
! CGS
! BICG
! BICGSTAB
! BICGSTABL
! RGMRES
!
! a - type(psb_s_sparse_mat) Input: sparse matrix containing A.
! prec - class(psb_sprec_type) Input: preconditioner
! b - real,dimension(:) Input: vector containing the
! right hand side B
! x - real,dimension(:) Input/Output: vector containing the
! initial guess and final solution X.
! eps - real Input: Stopping tolerance; the iteration is
! stopped when the error
! estimate |err| <= eps
! desc_a - type(psb_desc_type). Input: The communication descriptor.
! info - integer. Output: Return code
!
! itmax - integer(optional) Input: maximum number of iterations to be
! performed.
! iter - integer(optional) Output: how many iterations have been
! performed.
! err - real (optional) Output: error estimate on exit
! itrace - integer(optional) Input: print an informational message
! with the error estimate every itrace
! iterations
! irst - integer(optional) Input: restart parameter for RGMRES and
! BICGSTAB(L) methods
! istop - integer(optional) Input: stopping criterion, or how
! to estimate the error.
! 1: err = |r|/|b|
! 2: err = |r|/(|a||x|+|b|)
! where r is the (preconditioned, recursive
! estimate of) residual
!
Subroutine psb_skrylov(method,a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,irst,istop,cond)
use psb_sparse_mod
use psb_prec_mod,only : psb_sprec_type, psb_dprec_type, psb_cprec_type, psb_zprec_type
use psb_krylov_mod, psb_protect_name => psb_skrylov
character(len=*) :: method
Type(psb_s_sparse_mat), Intent(in) :: a
Type(psb_desc_type), Intent(in) :: desc_a
class(psb_sprec_type), intent(in) :: prec
Real(psb_spk_), Intent(in) :: b(:)
Real(psb_spk_), Intent(inout) :: x(:)
Real(psb_spk_), Intent(in) :: eps
integer, intent(out) :: info
Integer, Optional, Intent(in) :: itmax, itrace, irst,istop
Integer, Optional, Intent(out) :: iter
Real(psb_spk_), Optional, Intent(out) :: err,cond
interface
subroutine psb_scg(a,prec,b,x,eps,&
& desc_a,info,itmax,iter,err,itrace,istop,cond)
use psb_sparse_mod, only : psb_desc_type, psb_s_sparse_mat, psb_spk_
use psb_prec_mod, only : psb_sprec_type
type(psb_s_sparse_mat), intent(in) :: a
type(psb_desc_type), intent(in) :: desc_a
real(psb_spk_), intent(in) :: b(:)
real(psb_spk_), intent(inout) :: x(:)
real(psb_spk_), intent(in) :: eps
class(psb_sprec_type), intent(in) :: prec
integer, intent(out) :: info
integer, optional, intent(in) :: itmax, itrace,istop
integer, optional, intent(out) :: iter
real(psb_spk_), optional, intent(out) :: err,cond
end subroutine psb_scg
subroutine psb_sbicg(a,prec,b,x,eps,&
& desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod, only : psb_desc_type, psb_s_sparse_mat, psb_spk_
use psb_prec_mod, only : psb_sprec_type
type(psb_s_sparse_mat), intent(in) :: a
type(psb_desc_type), intent(in) :: desc_a
real(psb_spk_), intent(in) :: b(:)
real(psb_spk_), intent(inout) :: x(:)
real(psb_spk_), intent(in) :: eps
class(psb_sprec_type), intent(in) :: prec
integer, intent(out) :: info
integer, optional, intent(in) :: itmax, itrace,istop
integer, optional, intent(out) :: iter
real(psb_spk_), optional, intent(out) :: err
end subroutine psb_sbicg
subroutine psb_scgstab(a,prec,b,x,eps,&
& desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod, only : psb_desc_type, psb_s_sparse_mat, psb_spk_
use psb_prec_mod, only : psb_sprec_type
type(psb_s_sparse_mat), intent(in) :: a
type(psb_desc_type), intent(in) :: desc_a
real(psb_spk_), intent(in) :: b(:)
real(psb_spk_), intent(inout) :: x(:)
real(psb_spk_), intent(in) :: eps
class(psb_sprec_type), intent(in) :: prec
integer, intent(out) :: info
integer, optional, intent(in) :: itmax, itrace,istop
integer, optional, intent(out) :: iter
real(psb_spk_), optional, intent(out) :: err
end subroutine psb_scgstab
Subroutine psb_scgstabl(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err, itrace,irst,istop)
use psb_sparse_mod, only : psb_desc_type, psb_s_sparse_mat, psb_spk_
use psb_prec_mod, only : psb_sprec_type
Type(psb_s_sparse_mat), Intent(in) :: a
Type(psb_desc_type), Intent(in) :: desc_a
class(psb_sprec_type), intent(in) :: prec
Real(psb_spk_), Intent(in) :: b(:)
Real(psb_spk_), Intent(inout) :: x(:)
Real(psb_spk_), Intent(in) :: eps
integer, intent(out) :: info
Integer, Optional, Intent(in) :: itmax, itrace, irst,istop
Integer, Optional, Intent(out) :: iter
Real(psb_spk_), Optional, Intent(out) :: err
end subroutine psb_scgstabl
Subroutine psb_srgmres(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,irst,istop)
use psb_sparse_mod, only : psb_desc_type, psb_s_sparse_mat, psb_spk_
use psb_prec_mod, only : psb_sprec_type
Type(psb_s_sparse_mat), Intent(in) :: a
Type(psb_desc_type), Intent(in) :: desc_a
class(psb_sprec_type), intent(in) :: prec
Real(psb_spk_), Intent(in) :: b(:)
Real(psb_spk_), Intent(inout) :: x(:)
Real(psb_spk_), Intent(in) :: eps
integer, intent(out) :: info
Integer, Optional, Intent(in) :: itmax, itrace, irst,istop
Integer, Optional, Intent(out) :: iter
Real(psb_spk_), Optional, Intent(out) :: err
end subroutine psb_srgmres
subroutine psb_scgs(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,istop)
use psb_sparse_mod, only : psb_desc_type, psb_s_sparse_mat, psb_spk_
use psb_prec_mod, only : psb_sprec_type
type(psb_s_sparse_mat), intent(in) :: a
type(psb_desc_type), intent(in) :: desc_a
class(psb_sprec_type), intent(in) :: prec
real(psb_spk_), intent(in) :: b(:)
real(psb_spk_), intent(inout) :: x(:)
real(psb_spk_), intent(in) :: eps
integer, intent(out) :: info
integer, optional, intent(in) :: itmax, itrace,istop
integer, optional, intent(out) :: iter
real(psb_spk_), optional, intent(out) :: err
end subroutine psb_scgs
end interface
integer :: ictxt,me,np,err_act
character(len=20) :: name
info = psb_success_
name = 'psb_krylov'
call psb_erractionsave(err_act)
ictxt=psb_cd_get_context(desc_a)
call psb_info(ictxt, me, np)
select case(psb_toupper(method))
case('CG')
call psb_scg(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,istop,cond)
case('CGS')
call psb_scgs(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,istop)
case('BICG')
call psb_sbicg(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,istop)
case('BICGSTAB')
call psb_scgstab(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,istop)
case('RGMRES')
call psb_srgmres(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,irst,istop)
case('BICGSTABL')
call psb_scgstabl(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,irst,istop)
case default
if (me == 0) write(0,*) trim(name),': Warning: Unknown method ',method,&
& ', defaulting to BiCGSTAB'
call psb_scgstab(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,istop)
end select
if(info /= psb_success_) 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 == psb_act_abort_) then
call psb_error(ictxt)
return
end if
end subroutine psb_skrylov

3
krylov/psb_srgmres.f90
Unescape Escape View File

@ -109,7 +109,8 @@
subroutine psb_srgmres(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,irst,istop)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_srgmres
use psb_inner_krylov_mod
use psb_krylov_mod
implicit none
!!$ Parameters

196
krylov/psb_z_inner_krylov_mod.f90
Unescape Escape View File

@ -0,0 +1,196 @@
!!$
!!$ Parallel Sparse BLAS version 2.2
!!$ (C) Copyright 2006/2007/2008
!!$ 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.
!!$
!!$
!
! File: psb_krylov_mod.f90
! Interfaces for Krylov subspace iterative methods.
!
Module psb_z_inner_krylov_mod
use psb_base_inner_krylov_mod
interface psb_init_conv
module procedure psb_z_init_conv
end interface
interface psb_check_conv
module procedure psb_z_check_conv
end interface
contains
subroutine psb_z_init_conv(methdname,stopc,trace,itmax,a,b,eps,desc_a,stopdat,info)
use psb_sparse_mod
implicit none
character(len=*), intent(in) :: methdname
integer, intent(in) :: stopc, trace, itmax
type(psb_z_sparse_mat), intent(in) :: a
complex(psb_dpk_), intent(in) :: b(:)
real(psb_dpk_), intent(in) :: eps
type(psb_desc_type), intent(in) :: desc_a
type(psb_itconv_type) :: stopdat
integer, intent(out) :: info
integer :: ictxt, me, np, err_act
character(len=20) :: name
info = psb_success_
name = 'psb_init_conv'
call psb_erractionsave(err_act)
ictxt=psb_cd_get_context(desc_a)
call psb_info(ictxt, me, np)
stopdat%controls(:) = 0
stopdat%values(:) = 0.0d0
stopdat%controls(psb_ik_stopc_) = stopc
stopdat%controls(psb_ik_trace_) = trace
stopdat%controls(psb_ik_itmax_) = itmax
select case(stopdat%controls(psb_ik_stopc_))
case (1)
stopdat%values(psb_ik_ani_) = psb_spnrmi(a,desc_a,info)
if (info == psb_success_) stopdat%values(psb_ik_bni_) = psb_geamax(b,desc_a,info)
case (2)
stopdat%values(psb_ik_bn2_) = psb_genrm2(b,desc_a,info)
case default
info=psb_err_invalid_istop_
call psb_errpush(info,name,i_err=(/stopc,0,0,0,0/))
goto 9999
end select
if (info /= psb_success_) then
call psb_errpush(psb_err_internal_error_,name,a_err="Init conv check data")
goto 9999
end if
stopdat%values(psb_ik_eps_) = eps
stopdat%values(psb_ik_errnum_) = dzero
stopdat%values(psb_ik_errden_) = done
if ((stopdat%controls(psb_ik_trace_) > 0).and. (me == 0))&
& call log_header(methdname)
call psb_erractionrestore(err_act)
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_z_init_conv
function psb_z_check_conv(methdname,it,x,r,desc_a,stopdat,info)
use psb_sparse_mod
implicit none
character(len=*), intent(in) :: methdname
integer, intent(in) :: it
complex(psb_dpk_), intent(in) :: x(:), r(:)
type(psb_desc_type), intent(in) :: desc_a
type(psb_itconv_type) :: stopdat
logical :: psb_z_check_conv
integer, intent(out) :: info
integer :: ictxt, me, np, err_act
character(len=20) :: name
info = psb_success_
name = 'psb_check_conv'
call psb_erractionsave(err_act)
ictxt = psb_cd_get_context(desc_a)
call psb_info(ictxt,me,np)
psb_z_check_conv = .false.
select case(stopdat%controls(psb_ik_stopc_))
case(1)
stopdat%values(psb_ik_rni_) = psb_geamax(r,desc_a,info)
if (info == psb_success_) stopdat%values(psb_ik_xni_) = psb_geamax(x,desc_a,info)
stopdat%values(psb_ik_errnum_) = stopdat%values(psb_ik_rni_)
stopdat%values(psb_ik_errden_) = &
& (stopdat%values(psb_ik_ani_)*stopdat%values(psb_ik_xni_)+stopdat%values(psb_ik_bni_))
case(2)
stopdat%values(psb_ik_rn2_) = psb_genrm2(r,desc_a,info)
stopdat%values(psb_ik_errnum_) = stopdat%values(psb_ik_rn2_)
stopdat%values(psb_ik_errden_) = stopdat%values(psb_ik_bn2_)
case default
info=psb_err_internal_error_
call psb_errpush(info,name,a_err="Control data in stopdat messed up!")
goto 9999
end select
if (info /= psb_success_) then
info=psb_err_from_subroutine_non_
call psb_errpush(info,name)
goto 9999
end if
if (stopdat%values(psb_ik_errden_) == dzero) then
psb_z_check_conv = (stopdat%values(psb_ik_errnum_) <= stopdat%values(psb_ik_eps_))
else
psb_z_check_conv = &
& (stopdat%values(psb_ik_errnum_) <= stopdat%values(psb_ik_eps_)*stopdat%values(psb_ik_errden_))
end if
psb_z_check_conv = (psb_z_check_conv.or.(stopdat%controls(psb_ik_itmax_) <= it))
if ( (stopdat%controls(psb_ik_trace_) > 0).and.&
& ((mod(it,stopdat%controls(psb_ik_trace_)) == 0).or.psb_z_check_conv)) then
call log_conv(methdname,me,it,1,stopdat%values(psb_ik_errnum_),&
& stopdat%values(psb_ik_errden_),stopdat%values(psb_ik_eps_))
end if
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act == psb_act_abort_) then
call psb_error(ictxt)
return
end if
end function psb_z_check_conv
end module psb_z_inner_krylov_mod

3
krylov/psb_zbicg.f90
Unescape Escape View File

@ -96,7 +96,8 @@
subroutine psb_zbicg(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_zbicg
use psb_inner_krylov_mod
use psb_krylov_mod
implicit none
!!$ parameters

3
krylov/psb_zcg.F90
Unescape Escape View File

@ -98,7 +98,8 @@
subroutine psb_zcg(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_zcg
use psb_inner_krylov_mod
use psb_krylov_mod
implicit none
!!$ Parameters

3
krylov/psb_zcgs.f90
Unescape Escape View File

@ -95,7 +95,8 @@
Subroutine psb_zcgs(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_zcgs
use psb_inner_krylov_mod
use psb_krylov_mod
implicit none
!!$ parameters

3
krylov/psb_zcgstab.f90
Unescape Escape View File

@ -96,7 +96,8 @@
subroutine psb_zcgstab(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_zcgstab
use psb_inner_krylov_mod
use psb_krylov_mod
Implicit None
!!$ parameters
Type(psb_z_sparse_mat), Intent(in) :: a

3
krylov/psb_zcgstabl.f90
Unescape Escape View File

@ -106,7 +106,8 @@
Subroutine psb_zcgstabl(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,irst,istop)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_zcgstabl
use psb_inner_krylov_mod
use psb_krylov_mod
implicit none
!!$ parameters

245
krylov/psb_zkrylov.f90
Unescape Escape View File

@ -0,0 +1,245 @@
!!$
!!$ Parallel Sparse BLAS version 2.2
!!$ (C) Copyright 2006/2007/2008
!!$ 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.
!!$
!!$
!
! File: psb_krylov_mod.f90
! Interfaces for Krylov subspace iterative methods.
!
! Subroutine: psb_zkrylov
!
! Front-end for the Krylov subspace iterations, complexversion
!
! Arguments:
!
! methd - character The specific method; can take the values:
! CG
! CGS
! BICG
! BICGSTAB
! BICGSTABL
! RGMRES
!
! a - type(psb_z_sparse_mat) Input: sparse matrix containing A.
! prec - class(psb_zprec_type) Input: preconditioner
! b - complex,dimension(:) Input: vector containing the
! right hand side B
! x - complex,dimension(:) Input/Output: vector containing the
! initial guess and final solution X.
! eps - real Input: Stopping tolerance; the iteration is
! stopped when the error
! estimate |err| <= eps
!
! desc_a - type(psb_desc_type). Input: The communication descriptor.
! info - integer. Output: Return code
!
! itmax - integer(optional) Input: maximum number of iterations to be
! performed.
! iter - integer(optional) Output: how many iterations have been
! performed.
! err - real (optional) Output: error estimate on exit
! itrace - integer(optional) Input: print an informational message
! with the error estimate every itrace
! iterations
! irst - integer(optional) Input: restart parameter for RGMRES and
! BICGSTAB(L) methods
! istop - integer(optional) Input: stopping criterion, or how
! to estimate the error.
! 1: err = |r|/|b|
! 2: err = |r|/(|a||x|+|b|)
! where r is the (preconditioned, recursive
! estimate of) residual
!
Subroutine psb_zkrylov(method,a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,irst,istop)
use psb_sparse_mod
use psb_prec_mod,only : psb_sprec_type, psb_dprec_type, psb_cprec_type, psb_zprec_type
use psb_krylov_mod, psb_protect_name => psb_zkrylov
character(len=*) :: method
Type(psb_z_sparse_mat), Intent(in) :: a
Type(psb_desc_type), Intent(in) :: desc_a
class(psb_zprec_type), intent(in) :: prec
complex(psb_dpk_), Intent(in) :: b(:)
complex(psb_dpk_), Intent(inout) :: x(:)
Real(psb_dpk_), Intent(in) :: eps
integer, intent(out) :: info
Integer, Optional, Intent(in) :: itmax, itrace, irst,istop
Integer, Optional, Intent(out) :: iter
Real(psb_dpk_), Optional, Intent(out) :: err
interface
subroutine psb_zcg(a,prec,b,x,eps,&
& desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod, only : psb_desc_type, psb_z_sparse_mat, psb_dpk_
use psb_prec_mod, only : psb_zprec_type
type(psb_z_sparse_mat), intent(in) :: a
type(psb_desc_type), intent(in) :: desc_a
complex(psb_dpk_), intent(in) :: b(:)
complex(psb_dpk_), intent(inout) :: x(:)
real(psb_dpk_), intent(in) :: eps
class(psb_zprec_type), intent(in) :: prec
integer, intent(out) :: info
integer, optional, intent(in) :: itmax, itrace,istop
integer, optional, intent(out) :: iter
real(psb_dpk_), optional, intent(out) :: err
end subroutine psb_zcg
subroutine psb_zbicg(a,prec,b,x,eps,&
& desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod, only : psb_desc_type, psb_z_sparse_mat, psb_dpk_
use psb_prec_mod, only : psb_zprec_type
type(psb_z_sparse_mat), intent(in) :: a
type(psb_desc_type), intent(in) :: desc_a
complex(psb_dpk_), intent(in) :: b(:)
complex(psb_dpk_), intent(inout) :: x(:)
real(psb_dpk_), intent(in) :: eps
class(psb_zprec_type), intent(in) :: prec
integer, intent(out) :: info
integer, optional, intent(in) :: itmax, itrace,istop
integer, optional, intent(out) :: iter
real(psb_dpk_), optional, intent(out) :: err
end subroutine psb_zbicg
subroutine psb_zcgstab(a,prec,b,x,eps,&
& desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod, only : psb_desc_type, psb_z_sparse_mat, psb_dpk_
use psb_prec_mod, only : psb_zprec_type
type(psb_z_sparse_mat), intent(in) :: a
type(psb_desc_type), intent(in) :: desc_a
complex(psb_dpk_), intent(in) :: b(:)
complex(psb_dpk_), intent(inout) :: x(:)
real(psb_dpk_), intent(in) :: eps
class(psb_zprec_type), intent(in) :: prec
integer, intent(out) :: info
integer, optional, intent(in) :: itmax, itrace,istop
integer, optional, intent(out) :: iter
real(psb_dpk_), optional, intent(out) :: err
end subroutine psb_zcgstab
Subroutine psb_zcgstabl(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,irst,istop)
use psb_sparse_mod, only : psb_desc_type, psb_z_sparse_mat, psb_dpk_
use psb_prec_mod, only : psb_zprec_type
Type(psb_z_sparse_mat), Intent(in) :: a
Type(psb_desc_type), Intent(in) :: desc_a
class(psb_zprec_type), intent(in) :: prec
complex(psb_dpk_), Intent(in) :: b(:)
complex(psb_dpk_), Intent(inout) :: x(:)
Real(psb_dpk_), Intent(in) :: eps
integer, intent(out) :: info
Integer, Optional, Intent(in) :: itmax, itrace, irst,istop
Integer, Optional, Intent(out) :: iter
Real(psb_dpk_), Optional, Intent(out) :: err
end subroutine psb_zcgstabl
Subroutine psb_zrgmres(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,irst,istop)
use psb_sparse_mod, only : psb_desc_type, psb_z_sparse_mat, psb_dpk_
use psb_prec_mod, only : psb_zprec_type
Type(psb_z_sparse_mat), Intent(in) :: a
Type(psb_desc_type), Intent(in) :: desc_a
class(psb_zprec_type), intent(in) :: prec
complex(psb_dpk_), Intent(in) :: b(:)
complex(psb_dpk_), Intent(inout) :: x(:)
Real(psb_dpk_), Intent(in) :: eps
integer, intent(out) :: info
Integer, Optional, Intent(in) :: itmax, itrace, irst,istop
Integer, Optional, Intent(out) :: iter
Real(psb_dpk_), Optional, Intent(out) :: err
end subroutine psb_zrgmres
subroutine psb_zcgs(a,prec,b,x,eps,&
& desc_a,info,itmax,iter,err,itrace,istop)
use psb_sparse_mod, only : psb_desc_type, psb_z_sparse_mat, psb_dpk_
use psb_prec_mod, only : psb_zprec_type
type(psb_z_sparse_mat), intent(in) :: a
type(psb_desc_type), intent(in) :: desc_a
complex(psb_dpk_), intent(in) :: b(:)
complex(psb_dpk_), intent(inout) :: x(:)
real(psb_dpk_), intent(in) :: eps
class(psb_zprec_type), intent(in) :: prec
integer, intent(out) :: info
integer, optional, intent(in) :: itmax, itrace,istop
integer, optional, intent(out) :: iter
real(psb_dpk_), optional, intent(out) :: err
end subroutine psb_zcgs
end interface
integer :: ictxt,me,np,err_act
character(len=20) :: name
info = psb_success_
name = 'psb_krylov'
call psb_erractionsave(err_act)
ictxt=psb_cd_get_context(desc_a)
call psb_info(ictxt, me, np)
select case(psb_toupper(method))
case('CG')
call psb_zcg(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,istop)
case('CGS')
call psb_zcgs(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,istop)
case('BICG')
call psb_zbicg(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,istop)
case('BICGSTAB')
call psb_zcgstab(a,prec,b,x,eps,desc_a,info,&
& itmax,iter,err,itrace,istop)
case('RGMRES')
call psb_zrgmres(a,prec,b,x,eps,desc_a,info,&
& itmax,iter,err,itrace,irst,istop)
case('BICGSTABL')
call psb_zcgstabl(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,irst,istop)
case default
if (me == 0) write(0,*) trim(name),': Warning: Unknown method ',method,&
& ', defaulting to BiCGSTAB'
call psb_zcgstab(a,prec,b,x,eps,desc_a,info,&
&itmax,iter,err,itrace,istop)
end select
if(info /= psb_success_) 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 == psb_act_abort_) then
call psb_error(ictxt)
return
end if
end subroutine psb_zkrylov

3
krylov/psb_zrgmres.f90
Unescape Escape View File

@ -108,7 +108,8 @@
Subroutine psb_zrgmres(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,irst,istop)
use psb_sparse_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_zrgmres
use psb_inner_krylov_mod
use psb_krylov_mod
implicit none
!!$ Parameters

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