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401 lines
10 KiB
Fortran
401 lines
10 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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! File: psb_cdalv.f90
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!
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! Subroutine: psb_cdalv
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! Allocate descriptor
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! and checks correctness of PARTS subroutine
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!
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! Parameters:
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! m - integer. The number of rows.
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! v - integer, dimension(:). The array containg the partitioning scheme.
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! ictxt - integer. The communication context.
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! desc_a - type(<psb_desc_type>). The communication descriptor.
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! info - integer. Eventually returns an error code
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subroutine psb_cd_inloc(v, ictxt, desc_a, info)
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use psb_descriptor_type
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use psb_serial_mod
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use psb_const_mod
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use psb_error_mod
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use psb_penv_mod
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implicit None
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!....Parameters...
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Integer, intent(in) :: ictxt, v(:)
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integer, intent(out) :: info
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type(psb_desc_type), intent(out) :: desc_a
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!locals
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Integer :: counter,i,j,np,me,loc_row,err,&
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& loc_col,nprocs,n,itmpov, k,glx,gidx,gle,&
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& l_ov_ix,l_ov_el,idx, flag_, err_act,m
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integer :: int_err(5),exch(3)
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Integer, allocatable :: temp_ovrlap(:), ov_idx(:),ov_el(:),tmpgidx(:,:)
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logical, parameter :: debug=.false.
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character(len=20) :: name
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if(psb_get_errstatus() /= 0) return
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info=0
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err=0
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name = 'psb_cd_inloc'
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call psb_info(ictxt, me, np)
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if (debug) write(*,*) 'psb_cdall: ',np,me
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if (.false.) then
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loc_row = size(v)
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m = loc_row
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call psb_sum(ictxt,m)
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else
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m = maxval(v)
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call psb_max(ictxt,m)
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end if
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n = m
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!... check m and n parameters....
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if (m < 1) then
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info = 10
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int_err(1) = 1
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int_err(2) = m
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else if (n < 1) then
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info = 10
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int_err(1) = 2
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int_err(2) = n
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endif
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if (info /= 0) then
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call psb_errpush(info,name,i_err=int_err)
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goto 9999
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end if
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if (me == psb_root_) then
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exch(1)=m
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exch(2)=n
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exch(3)=psb_cd_get_large_threshold()
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call psb_bcast(ictxt,exch(1:3),root=psb_root_)
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else
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call psb_bcast(ictxt,exch(1:3),root=psb_root_)
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if (exch(1) /= m) then
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err=550
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int_err(1)=1
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call psb_errpush(err,name,int_err)
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goto 9999
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else if (exch(2) /= n) then
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err=550
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int_err(1)=2
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call psb_errpush(err,name,int_err)
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goto 9999
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endif
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call psb_cd_set_large_threshold(exch(3))
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endif
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if (debug) write(*,*) 'psb_cdall: doing global checks'
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allocate(tmpgidx(m,2),stat=info)
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if (info /=0) then
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info=4000
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call psb_errpush(info,name,i_err=int_err)
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goto 9999
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end if
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tmpgidx=0
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flag_=1
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do i=1,loc_row
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if ((v(i)<1).or.(v(i)>m)) then
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info = 551
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int_err(1) = i
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int_err(2) = v(i)
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int_err(3) = loc_row
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int_err(4) = m
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else
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tmpgidx(v(i),1) = me+flag_
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tmpgidx(v(i),2) = 1
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endif
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end do
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call psb_amx(ictxt,tmpgidx)
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if (info ==0) then
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int_err(1) = count(tmpgidx(:,2) == 0)
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int_err(2) = m
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if (int_err(1)>0) then
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info = 552
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end if
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end if
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if (info /= 0) then
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call psb_errpush(info,name,i_err=int_err)
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goto 9999
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end if
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call psb_nullify_desc(desc_a)
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!count local rows number
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! allocate work vector
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if (psb_cd_choose_large_state(ictxt,m)) then
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allocate(desc_a%matrix_data(psb_mdata_size_),&
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&temp_ovrlap(m),stat=info)
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desc_a%matrix_data(psb_desc_size_) = psb_desc_large_
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else
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allocate(desc_a%glob_to_loc(m),desc_a%matrix_data(psb_mdata_size_),&
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&temp_ovrlap(m),stat=info)
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desc_a%matrix_data(psb_desc_size_) = psb_desc_normal_
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end if
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if (info /= 0) then
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info=2025
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int_err(1)=m
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call psb_errpush(info,name,i_err=int_err)
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goto 9999
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endif
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if (debug) write(*,*) 'PSB_CDALL: starting main loop' ,info
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counter = 0
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itmpov = 0
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temp_ovrlap(:) = -1
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if (psb_cd_choose_large_state(ictxt,m)) then
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do i=1,m
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if (((tmpgidx(i,1)-flag_) > np-1).or.((tmpgidx(i,1)-flag_) < 0)) then
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info=580
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int_err(1)=3
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int_err(2)=tmpgidx(i,1) - flag_
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int_err(3)=i
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exit
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end if
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if ((tmpgidx(i,1)-flag_) == me) then
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! this point belongs to me
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counter=counter+1
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end if
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enddo
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loc_row=counter
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! check on parts function
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if (debug) write(*,*) 'PSB_CDALL: End main loop:' ,loc_row,itmpov,info
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if (info /= 0) then
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call psb_errpush(info,name,i_err=int_err)
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goto 9999
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end if
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if (debug) write(*,*) 'PSB_CDALL: error check:' ,err
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! estimate local cols number
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loc_col = min(2*loc_row,m)
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allocate(desc_a%loc_to_glob(loc_col), desc_a%lprm(1),&
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& desc_a%ptree(2),stat=info)
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if (info == 0) call InitPairSearchTree(desc_a%ptree,info)
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if (info /= 0) then
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info=2025
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int_err(1)=loc_col
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call psb_errpush(info,name,i_err=int_err)
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goto 9999
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end if
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! set LOC_TO_GLOB array to all "-1" values
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desc_a%lprm(1) = 0
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desc_a%loc_to_glob(:) = -1
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k = 0
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do i=1,m
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if ((tmpgidx(i,1)-flag_) == me) then
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k = k + 1
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desc_a%loc_to_glob(k) = i
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call SearchInsKeyVal(desc_a%ptree,i,k,glx,info)
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endif
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enddo
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if (k /= loc_row) then
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write(0,*) 'Large cd init: ',k,loc_row
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end if
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if (info /= 0) then
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info=4000
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call psb_errpush(info,name)
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goto 9999
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endif
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else
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do i=1,m
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if (((tmpgidx(i,1)-flag_) > np-1).or.((tmpgidx(i,1)-flag_) < 0)) then
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info=580
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int_err(1)=3
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int_err(2)=tmpgidx(i,1) - flag_
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int_err(3)=i
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exit
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end if
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if ((tmpgidx(i,1)-flag_) == me) then
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! this point belongs to me
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counter=counter+1
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desc_a%glob_to_loc(i) = counter
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else
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desc_a%glob_to_loc(i) = -(np+(tmpgidx(i,1)-flag_)+1)
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end if
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enddo
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loc_row=counter
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! check on parts function
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if (debug) write(*,*) 'PSB_CDALL: End main loop:' ,loc_row,itmpov,info
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if (info /= 0) then
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call psb_errpush(info,name,i_err=int_err)
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goto 9999
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end if
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if (debug) write(*,*) 'PSB_CDALL: error check:' ,err
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! estimate local cols number
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loc_col = min(2*loc_row,m)
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allocate(desc_a%loc_to_glob(loc_col),&
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&desc_a%lprm(1),stat=info)
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if (info /= 0) then
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info=2025
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int_err(1)=loc_col
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call psb_errpush(info,name,i_err=int_err)
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goto 9999
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end if
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! set LOC_TO_GLOB array to all "-1" values
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desc_a%lprm(1) = 0
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desc_a%loc_to_glob(:) = -1
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do i=1,m
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k = desc_a%glob_to_loc(i)
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if (k.gt.0) then
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desc_a%loc_to_glob(k) = i
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endif
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enddo
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end if
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l_ov_ix=0
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l_ov_el=0
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i = 1
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do while (temp_ovrlap(i) /= -1)
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idx = temp_ovrlap(i)
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i=i+1
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nprocs = temp_ovrlap(i)
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i = i + 1
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l_ov_ix = l_ov_ix+3*(nprocs-1)
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l_ov_el = l_ov_el + 2
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i = i + nprocs
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enddo
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l_ov_ix = l_ov_ix+3
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l_ov_el = l_ov_el+3
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if (debug) write(*,*) 'PSB_CDALL: Ov len',l_ov_ix,l_ov_el
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allocate(ov_idx(l_ov_ix),ov_el(l_ov_el), stat=info)
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if (info /= 0) then
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info=2025
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int_err(1)=l_ov_ix
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call psb_errpush(info,name,i_err=int_err)
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goto 9999
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end if
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l_ov_ix=0
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l_ov_el=0
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i = 1
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do while (temp_ovrlap(i) /= -1)
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idx = temp_ovrlap(i)
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i = i+1
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nprocs = temp_ovrlap(i)
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ov_el(l_ov_el+1) = idx
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ov_el(l_ov_el+2) = nprocs
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l_ov_el = l_ov_el+2
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do j=1, nprocs
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if (temp_ovrlap(i+j) /= me) then
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ov_idx(l_ov_ix+1) = temp_ovrlap(i+j)
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ov_idx(l_ov_ix+2) = 1
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ov_idx(l_ov_ix+3) = idx
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l_ov_ix = l_ov_ix+3
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endif
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enddo
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i = i + nprocs +1
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enddo
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l_ov_el = l_ov_el + 1
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ov_el(l_ov_el) = -1
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l_ov_ix = l_ov_ix + 1
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ov_idx(l_ov_ix) = -1
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call psb_transfer(ov_idx,desc_a%ovrlap_index,info)
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if (info == 0) call psb_transfer(ov_el,desc_a%ovrlap_elem,info)
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deallocate(temp_ovrlap,stat=info)
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if (info /= 0) then
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info=4000
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call psb_errpush(info,name)
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goto 9999
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endif
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! set fields in desc_a%MATRIX_DATA....
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desc_a%matrix_data(psb_n_row_) = loc_row
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desc_a%matrix_data(psb_n_col_) = loc_row
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call psb_cd_set_bld(desc_a,info)
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call psb_realloc(1,desc_a%halo_index, info)
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if (info /= psb_no_err_) then
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info=2025
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call psb_errpush(err,name,a_err='psb_realloc')
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Goto 9999
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end if
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desc_a%halo_index(:) = -1
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call psb_realloc(1,desc_a%ext_index, info)
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if (info /= psb_no_err_) then
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info=2025
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call psb_errpush(err,name,a_err='psb_realloc')
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Goto 9999
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end if
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desc_a%ext_index(:) = -1
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desc_a%matrix_data(psb_m_) = m
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desc_a%matrix_data(psb_n_) = n
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desc_a%matrix_data(psb_ctxt_) = ictxt
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call psb_get_mpicomm(ictxt,desc_a%matrix_data(psb_mpi_c_))
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error(ictxt)
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return
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end if
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return
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end subroutine psb_cd_inloc
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