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343 lines
12 KiB
Fortran
343 lines
12 KiB
Fortran
!!$
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!!$ Parallel Sparse BLAS v2.0
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!!$ (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata
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!!$ Alfredo Buttari University of Rome Tor Vergata
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!!$
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!!$ Redistribution and use in source and binary forms, with or without
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!!$ modification, are permitted provided that the following conditions
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!!$ are met:
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!!$ 1. Redistributions of source code must retain the above copyright
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!!$ notice, this list of conditions and the following disclaimer.
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!!$ 2. Redistributions in binary form must reproduce the above copyright
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!!$ notice, this list of conditions, and the following disclaimer in the
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!!$ documentation and/or other materials provided with the distribution.
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!!$ 3. The name of the PSBLAS group or the names of its contributors may
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!!$ not be used to endorse or promote products derived from this
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!!$ software without specific written permission.
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!!$
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!!$ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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!!$ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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!!$ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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!!$ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
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!!$ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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!!$ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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!!$ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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!!$ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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!!$ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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!!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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!!$ POSSIBILITY OF SUCH DAMAGE.
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!!$
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!!$
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Module psb_krylov_mod
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use psb_base_mod
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use psb_prec_mod
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interface psb_krylov
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module procedure psb_dkrylov, psb_zkrylov
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end interface
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interface psb_cg
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subroutine psb_dcg(a,prec,b,x,eps,&
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& desc_a,info,itmax,iter,err,itrace,istop)
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use psb_base_mod
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use psb_prec_mod
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type(psb_dspmat_type), intent(in) :: a
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type(psb_desc_type), intent(in) :: desc_a
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real(kind(1.d0)), intent(in) :: b(:)
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real(kind(1.d0)), intent(inout) :: x(:)
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real(kind(1.d0)), intent(in) :: eps
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type(psb_dprec_type), intent(in) :: prec
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integer, intent(out) :: info
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integer, optional, intent(in) :: itmax, itrace,istop
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integer, optional, intent(out) :: iter
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real(kind(1.d0)), optional, intent(out) :: err
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end subroutine psb_dcg
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end interface
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interface psb_bicg
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subroutine psb_dbicg(a,prec,b,x,eps,&
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& desc_a,info,itmax,iter,err,itrace,istop)
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use psb_base_mod
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use psb_prec_mod
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type(psb_dspmat_type), intent(in) :: a
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type(psb_desc_type), intent(in) :: desc_a
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real(kind(1.d0)), intent(in) :: b(:)
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real(kind(1.d0)), intent(inout) :: x(:)
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real(kind(1.d0)), intent(in) :: eps
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type(psb_dprec_type), intent(in) :: prec
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integer, intent(out) :: info
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integer, optional, intent(in) :: itmax, itrace,istop
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integer, optional, intent(out) :: iter
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real(kind(1.d0)), optional, intent(out) :: err
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end subroutine psb_dbicg
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end interface
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interface psb_bicgstab
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subroutine psb_dcgstab(a,prec,b,x,eps,&
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& desc_a,info,itmax,iter,err,itrace,istop)
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use psb_base_mod
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use psb_prec_mod
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type(psb_dspmat_type), intent(in) :: a
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type(psb_desc_type), intent(in) :: desc_a
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real(kind(1.d0)), intent(in) :: b(:)
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real(kind(1.d0)), intent(inout) :: x(:)
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real(kind(1.d0)), intent(in) :: eps
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type(psb_dprec_type), intent(in) :: prec
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integer, intent(out) :: info
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integer, optional, intent(in) :: itmax, itrace,istop
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integer, optional, intent(out) :: iter
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real(kind(1.d0)), optional, intent(out) :: err
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end subroutine psb_dcgstab
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subroutine psb_zcgstab(a,prec,b,x,eps,&
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& desc_a,info,itmax,iter,err,itrace,istop)
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use psb_base_mod
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use psb_prec_mod
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type(psb_zspmat_type), intent(in) :: a
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type(psb_desc_type), intent(in) :: desc_a
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complex(kind(1.d0)), intent(in) :: b(:)
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complex(kind(1.d0)), intent(inout) :: x(:)
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real(kind(1.d0)), intent(in) :: eps
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type(psb_zprec_type), intent(in) :: prec
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integer, intent(out) :: info
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integer, optional, intent(in) :: itmax, itrace,istop
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integer, optional, intent(out) :: iter
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real(kind(1.d0)), optional, intent(out) :: err
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end subroutine psb_zcgstab
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end interface
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interface psb_bicgstabl
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Subroutine psb_dcgstabl(a,prec,b,x,eps,desc_a,info,&
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&itmax,iter,err, itrace,irst,istop)
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use psb_base_mod
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use psb_prec_mod
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Type(psb_dspmat_type), Intent(in) :: a
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Type(psb_desc_type), Intent(in) :: desc_a
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type(psb_dprec_type), intent(in) :: prec
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Real(Kind(1.d0)), Intent(in) :: b(:)
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Real(Kind(1.d0)), Intent(inout) :: x(:)
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Real(Kind(1.d0)), Intent(in) :: eps
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integer, intent(out) :: info
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Integer, Optional, Intent(in) :: itmax, itrace, irst,istop
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Integer, Optional, Intent(out) :: iter
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Real(Kind(1.d0)), Optional, Intent(out) :: err
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end subroutine psb_dcgstabl
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end interface
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interface psb_rgmres
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Subroutine psb_dgmresr(a,prec,b,x,eps,desc_a,info,&
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&itmax,iter,err,itrace,irst,istop)
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use psb_base_mod
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use psb_prec_mod
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!!$ parameters
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Type(psb_dspmat_type), Intent(in) :: a
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Type(psb_desc_type), Intent(in) :: desc_a
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type(psb_dprec_type), intent(in) :: prec
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Real(Kind(1.d0)), Intent(in) :: b(:)
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Real(Kind(1.d0)), Intent(inout) :: x(:)
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Real(Kind(1.d0)), Intent(in) :: eps
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integer, intent(out) :: info
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Integer, Optional, Intent(in) :: itmax, itrace, irst,istop
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Integer, Optional, Intent(out) :: iter
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Real(Kind(1.d0)), Optional, Intent(out) :: err
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end subroutine psb_dgmresr
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end interface
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interface psb_cgs
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subroutine psb_dcgs(a,prec,b,x,eps,desc_a,info,&
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&itmax,iter,err,itrace,istop)
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use psb_base_mod
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use psb_prec_mod
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!!$ parameters
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type(psb_dspmat_type), intent(in) :: a
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type(psb_desc_type), intent(in) :: desc_a
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type(psb_dprec_type), intent(in) :: prec
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real(kind(1.d0)), intent(in) :: b(:)
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real(kind(1.d0)), intent(inout) :: x(:)
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real(kind(1.d0)), intent(in) :: eps
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integer, intent(out) :: info
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integer, optional, intent(in) :: itmax, itrace,istop
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integer, optional, intent(out) :: iter
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real(kind(1.d0)), optional, intent(out) :: err
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end subroutine psb_dcgs
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subroutine psb_zcgs(a,prec,b,x,eps,&
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& desc_a,info,itmax,iter,err,itrace,istop)
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use psb_base_mod
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use psb_prec_mod
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type(psb_zspmat_type), intent(in) :: a
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type(psb_desc_type), intent(in) :: desc_a
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complex(kind(1.d0)), intent(in) :: b(:)
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complex(kind(1.d0)), intent(inout) :: x(:)
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real(kind(1.d0)), intent(in) :: eps
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type(psb_zprec_type), intent(in) :: prec
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integer, intent(out) :: info
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integer, optional, intent(in) :: itmax, itrace,istop
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integer, optional, intent(out) :: iter
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real(kind(1.d0)), optional, intent(out) :: err
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end subroutine psb_zcgs
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end interface
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contains
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Subroutine psb_dkrylov(method,a,prec,b,x,eps,desc_a,info,&
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&itmax,iter,err,itrace,irst,istop)
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character(len=*) :: method
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Type(psb_dspmat_type), Intent(in) :: a
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Type(psb_desc_type), Intent(in) :: desc_a
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type(psb_dprec_type), intent(in) :: prec
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Real(Kind(1.d0)), Intent(in) :: b(:)
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Real(Kind(1.d0)), Intent(inout) :: x(:)
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Real(Kind(1.d0)), Intent(in) :: eps
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integer, intent(out) :: info
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Integer, Optional, Intent(in) :: itmax, itrace, irst,istop
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Integer, Optional, Intent(out) :: iter
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Real(Kind(1.d0)), Optional, Intent(out) :: err
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integer :: itmax_, itrace_, irst_, istop_, iter_
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real(kind(1.d0)) :: err_
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if (present(itmax)) then
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itmax_ = itmax
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else
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itmax_ = 1000
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end if
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if (present(itrace)) then
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itrace_ = itrace
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else
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itrace_ = -1
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end if
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if (present(irst)) then
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irst_ = irst
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else
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irst_ = 1
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end if
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if (present(istop)) then
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istop_ = istop
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else
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istop_ = 1
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end if
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select case(toupper(method))
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case('CG')
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call psb_cg(a,prec,b,x,eps,desc_a,info,&
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&itmax_,iter_,err_,itrace_,istop_)
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case('CGS')
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call psb_cgs(a,prec,b,x,eps,desc_a,info,&
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&itmax_,iter_,err_,itrace_,istop_)
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case('BICG')
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call psb_bicg(a,prec,b,x,eps,desc_a,info,&
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&itmax_,iter_,err_,itrace_,istop_)
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case('BICGSTAB')
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call psb_bicgstab(a,prec,b,x,eps,desc_a,info,&
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&itmax_,iter_,err_,itrace_,istop_)
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case('RGMRES')
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call psb_rgmres(a,prec,b,x,eps,desc_a,info,&
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&itmax_,iter_,err_,itrace_,irst_,istop_)
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case('BICGSTABL')
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call psb_bicgstabl(a,prec,b,x,eps,desc_a,info,&
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&itmax_,iter_,err_,itrace_,irst_,istop_)
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case default
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call psb_bicgstab(a,prec,b,x,eps,desc_a,info,&
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&itmax_,iter_,err_,itrace_,istop_)
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end select
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if (present(err)) then
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err = err_
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endif
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if (present(iter)) then
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iter = iter_
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endif
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end subroutine psb_dkrylov
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Subroutine psb_zkrylov(method,a,prec,b,x,eps,desc_a,info,&
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&itmax,iter,err,itrace,irst,istop)
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character(len=*) :: method
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Type(psb_zspmat_type), Intent(in) :: a
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Type(psb_desc_type), Intent(in) :: desc_a
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type(psb_zprec_type), intent(in) :: prec
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complex(Kind(1.d0)), Intent(in) :: b(:)
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complex(Kind(1.d0)), Intent(inout) :: x(:)
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Real(Kind(1.d0)), Intent(in) :: eps
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integer, intent(out) :: info
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Integer, Optional, Intent(in) :: itmax, itrace, irst,istop
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Integer, Optional, Intent(out) :: iter
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Real(Kind(1.d0)), Optional, Intent(out) :: err
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integer :: itmax_, itrace_, irst_, istop_, iter_
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real(kind(1.d0)) :: err_
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if (present(itmax)) then
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itmax_ = itmax
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else
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itmax_ = 1000
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end if
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if (present(itrace)) then
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itrace_ = itrace
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else
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itrace_ = -1
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end if
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if (present(irst)) then
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irst_ = irst
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else
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irst_ = 1
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end if
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if (present(istop)) then
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istop_ = istop
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else
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istop_ = 1
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end if
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select case(toupper(method))
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!!$ case('CG')
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!!$ call psb_cg(a,prec,b,x,eps,desc_a,info,&
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!!$ &itmax_,iter_,err_,itrace_,istop_)
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case('CGS')
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call psb_cgs(a,prec,b,x,eps,desc_a,info,&
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&itmax_,iter_,err_,itrace_,istop_)
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!!$ case('BICG')
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!!$ call psb_bicg(a,prec,b,x,eps,desc_a,info,&
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!!$ &itmax_,iter_,err_,itrace_,istop_)
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case('BICGSTAB')
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call psb_bicgstab(a,prec,b,x,eps,desc_a,info,&
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&itmax_,iter_,err_,itrace_,istop_)
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!!$ case('RGMRES')
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!!$ call psb_rgmres(a,prec,b,x,eps,desc_a,info,&
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!!$ &itmax_,iter_,err_,itrace_,irst_,istop_)
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!!$ case('BICGSTABL')
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!!$ call psb_bicgstabl(a,prec,b,x,eps,desc_a,info,&
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!!$ &itmax_,iter_,err_,itrace_,irst_,istop_)
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case default
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call psb_bicgstab(a,prec,b,x,eps,desc_a,info,&
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&itmax_,iter_,err_,itrace_,istop_)
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end select
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if (present(err)) then
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err = err_
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endif
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if (present(iter)) then
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iter = iter_
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endif
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end subroutine psb_zkrylov
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end module psb_krylov_mod
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