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157 lines
5.3 KiB
Fortran
157 lines
5.3 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 getp
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use psb_base_mod
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public get_parms
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public pr_usage
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contains
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!
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! Get iteration parameters from the command line
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!
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subroutine get_parms(ictxt,mtrx_file,rhs_file,cmethd,ipart,&
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& afmt,istopc,itmax,itrace,novr,iprec,eps)
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integer :: ictxt
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character*40 :: cmethd, mtrx_file, rhs_file
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integer :: iret, istopc,itmax,itrace,ipart,iprec,novr
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character*40 :: charbuf
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real(kind(1.d0)) :: eps
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character :: afmt*5
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integer :: np, iam
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integer :: inparms(40), ip
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call psb_info(ictxt,iam,np)
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if (iam==0) then
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! Read Input Parameters
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read(*,*) ip
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if (ip >= 3) then
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read(*,*) mtrx_file
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read(*,*) rhs_file
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read(*,*) cmethd
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read(*,*) afmt
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call psb_bcast(ictxt,mtrx_file)
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call psb_bcast(ictxt,rhs_file)
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call psb_bcast(ictxt,cmethd)
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call psb_bcast(ictxt,afmt)
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read(*,*) ipart
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if (ip >= 5) then
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read(*,*) istopc
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else
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istopc=1
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endif
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if (ip >= 6) then
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read(*,*) itmax
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else
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itmax=500
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endif
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if (ip >= 7) then
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read(*,*) itrace
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else
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itrace=-1
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endif
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if (ip >= 8) then
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read(*,*) iprec
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else
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iprec=0
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endif
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if (ip >= 9) then
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read(*,*) novr
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else
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novr = 1
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endif
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if (ip >= 10) then
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read(*,*) eps
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else
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eps=1.d-6
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endif
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inparms(1) = ipart
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inparms(2) = istopc
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inparms(3) = itmax
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inparms(4) = itrace
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inparms(5) = iprec
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inparms(6) = novr
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call psb_bcast(ictxt,inparms(1:6))
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call psb_bcast(ictxt,eps)
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write(*,'("Solving matrix : ",a40)') mtrx_file
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write(*,'("Number of processors : ",i3)') np
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write(*,'("Data distribution : ",i2)') ipart
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write(*,'("Preconditioner : ",i2)') iprec
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if(iprec.gt.2) write(*,'("Overlapping levels : ",i2)')novr
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write(*,'("Iterative method : ",a40)') cmethd
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write(*,'("Storage format : ",a3)') afmt(1:3)
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write(*,'(" ")')
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else
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call pr_usage(0)
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call psb_exit(ictxt)
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stop 1
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end if
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else
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! Receive Parameters
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call psb_bcast(ictxt,mtrx_file)
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call psb_bcast(ictxt,rhs_file)
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call psb_bcast(ictxt,cmethd)
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call psb_bcast(ictxt,afmt)
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call psb_bcast(ictxt,inparms(1:6))
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ipart = inparms(1)
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istopc = inparms(2)
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itmax = inparms(3)
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itrace = inparms(4)
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iprec = inparms(5)
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novr = inparms(6)
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call psb_bcast(ictxt,eps)
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end if
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end subroutine get_parms
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subroutine pr_usage(iout)
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integer iout
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write(iout, *) ' Number of parameters is incorrect!'
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write(iout, *) ' Use: hb_sample mtrx_file methd prec [ptype &
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&itmax istopc itrace]'
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write(iout, *) ' Where:'
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write(iout, *) ' mtrx_file is stored in HB format'
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write(iout, *) ' methd may be: CGSTAB '
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write(iout, *) ' ptype Partition strategy default 0'
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write(iout, *) ' 0: BLOCK partition '
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write(iout, *) ' itmax Max iterations [500] '
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write(iout, *) ' istopc Stopping criterion [1] '
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write(iout, *) ' itrace 0 (no tracing, default) or '
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write(iout, *) ' >= 0 do tracing every ITRACE'
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write(iout, *) ' iterations '
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end subroutine pr_usage
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end module getp
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