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@ -57,11 +57,11 @@ subroutine psb_cdals(m, n, parts, ictxt, desc_a, info)
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!locals
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Integer :: counter,i,j,np,me,loc_row,err,loc_col,nprocs,&
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& l_ov_ix,l_ov_el,idx, err_act, itmpov, k, ns
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integer :: int_err(5),exch(2)
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& l_ov_ix,l_ov_el,idx, err_act, itmpov, k, ns, glx, mth
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integer :: int_err(5),exch(3)
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integer, allocatable :: prc_v(:), temp_ovrlap(:), ov_idx(:),ov_el(:)
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logical, parameter :: debug=.false.
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character(len=20) :: name, char_err
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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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@ -96,9 +96,10 @@ subroutine psb_cdals(m, n, parts, ictxt, desc_a, info)
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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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call psb_bcast(ictxt,exch(1:2),root=psb_root_)
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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(1:2),root=psb_root_)
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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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@ -110,15 +111,23 @@ subroutine psb_cdals(m, n, parts, ictxt, desc_a, info)
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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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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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allocate(prc_v(np),desc_a%glob_to_loc(m),&
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&desc_a%matrix_data(psb_mdata_size_),temp_ovrlap(m),stat=info)
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if (info /= no_err) then
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if (m > psb_cd_get_large_threshold()) then
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allocate(desc_a%matrix_data(psb_mdata_size_),&
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& temp_ovrlap(m),prc_v(np),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),prc_v(np),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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err=info
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int_err(1)=m
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@ -131,6 +140,22 @@ subroutine psb_cdals(m, n, parts, ictxt, desc_a, 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 ( m >psb_cd_get_large_threshold()) then
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loc_col = (m+np-1)/np
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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 (info == 0) then
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call parts(i,m,np,prc_v,nprocs)
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@ -164,30 +189,104 @@ subroutine psb_cdals(m, n, parts, ictxt, desc_a, info)
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end if
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end do
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endif
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desc_a%glob_to_loc(i) = -(np+prc_v(1)+1)
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j=1
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do
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if (j > nprocs) exit
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if (prc_v(j) == me) exit
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j=j+1
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enddo
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if (j <= nprocs) then
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if (prc_v(j) == 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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k = k + 1
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call psb_check_size((k+1),desc_a%loc_to_glob,info,pad=-1)
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if (info /= 0) then
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info=4010
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call psb_errpush(info,name,a_err='psb_check_size')
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goto 9999
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end if
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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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if (nprocs > 1) then
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if ((itmpov+2+nprocs) > size(temp_ovrlap)) then
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ns = max(itmpov+2+nprocs,int(1.25*size(temp_ovrlap)))
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call psb_realloc(ns,temp_ovrlap,info,pad=-1)
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call psb_check_size((itmpov+3+nprocs),temp_ovrlap,info,pad=-1)
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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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info=4010
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call psb_errpush(info,name,a_err='psb_check_size')
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goto 9999
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end if
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itmpov = itmpov + 1
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temp_ovrlap(itmpov) = i
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itmpov = itmpov + 1
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temp_ovrlap(itmpov) = nprocs
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temp_ovrlap(itmpov+1:itmpov+nprocs) = prc_v(1:nprocs)
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itmpov = itmpov + nprocs
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endif
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end if
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end if
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end if
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enddo
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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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loc_row = k
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else
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do i=1,m
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if (info == 0) then
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call parts(i,m,np,prc_v,nprocs)
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if (nprocs > np) then
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info=570
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int_err(1)=3
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int_err(2)=np
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int_err(3)=nprocs
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int_err(4)=i
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err=info
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call psb_errpush(err,name,int_err)
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goto 9999
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else if (nprocs <= 0) then
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info=575
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int_err(1)=3
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int_err(2)=nprocs
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int_err(3)=i
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err=info
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call psb_errpush(err,name,int_err)
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goto 9999
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else
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do j=1,nprocs
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if ((prc_v(j) > np-1).or.(prc_v(j) < 0)) then
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info=580
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int_err(1)=3
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int_err(2)=prc_v(j)
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int_err(3)=i
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err=info
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call psb_errpush(err,name,int_err)
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goto 9999
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end if
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end do
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endif
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endif
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desc_a%glob_to_loc(i) = -(np+prc_v(1)+1)
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j=1
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do
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if (j > nprocs) exit
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if (prc_v(j) == me) exit
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j=j+1
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enddo
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if (j <= nprocs) then
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if (prc_v(j) == 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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if (nprocs > 1) then
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call psb_check_size((itmpov+3+nprocs),temp_ovrlap,info,pad=-1)
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if (info /= 0) then
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info=4010
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call psb_errpush(info,name,a_err='psb_check_size')
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goto 9999
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end if
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itmpov = itmpov + 1
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temp_ovrlap(itmpov) = i
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itmpov = itmpov + 1
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@ -199,8 +298,29 @@ subroutine psb_cdals(m, n, parts, ictxt, desc_a, info)
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end if
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endif
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enddo
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! estimate local cols number
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loc_row=counter
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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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call psb_errpush(4010,name,a_err='Allocate')
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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 > 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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! check on parts function
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if (debug) write(*,*) 'PSB_CDALL: End main loop:' ,loc_row,itmpov,info
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@ -227,9 +347,8 @@ subroutine psb_cdals(m, n, parts, ictxt, desc_a, info)
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allocate(ov_idx(l_ov_ix),ov_el(l_ov_el), stat=info)
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if (info /= no_err) then
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info=4010
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char_err='psb_realloc'
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err=info
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call psb_errpush(err,name,a_err=char_err)
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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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@ -260,51 +379,32 @@ subroutine psb_cdals(m, n, parts, ictxt, desc_a, info)
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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(prc_v,temp_ovrlap,stat=info)
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if (info == 0) deallocate(prc_v,temp_ovrlap,stat=info)
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if (info /= no_err) then
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info=4000
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err=info
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call psb_errpush(err,name)
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Goto 9999
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endif
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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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call psb_errpush(4010,name,a_err='Allocate')
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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 > 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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! At this point overlap_elem is OK.
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desc_a%matrix_data(psb_ovl_state_) = psb_cd_ovl_asb_
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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 /= no_err) then
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info=2025
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char_err='psb_realloc'
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call psb_errpush(err,name,a_err=char_err)
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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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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_dec_type_) = psb_desc_bld_
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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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Salvatore Filippone
20 years ago