You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
psblas3/base/tools/psb_cd_inloc.f90

401 lines
10 KiB
Fortran

!!$
!!$ Parallel Sparse BLAS v2.0
!!$ (C) Copyright 2006 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_cdalv.f90
!
! Subroutine: psb_cdalv
! Allocate descriptor
! and checks correctness of PARTS subroutine
!
! Parameters:
! m - integer. The number of rows.
! v - integer, dimension(:). The array containg the partitioning scheme.
! ictxt - integer. The communication context.
! desc_a - type(<psb_desc_type>). The communication descriptor.
! info - integer. Eventually returns an error code
subroutine psb_cd_inloc(v, ictxt, desc_a, info)
use psb_descriptor_type
use psb_serial_mod
use psb_const_mod
use psb_error_mod
use psb_penv_mod
implicit None
!....Parameters...
Integer, intent(in) :: ictxt, v(:)
integer, intent(out) :: info
type(psb_desc_type), intent(out) :: desc_a
!locals
Integer :: counter,i,j,np,me,loc_row,err,&
& loc_col,nprocs,n,itmpov, k,glx,gidx,gle,&
& l_ov_ix,l_ov_el,idx, flag_, err_act,m
integer :: int_err(5),exch(3)
Integer, allocatable :: temp_ovrlap(:), ov_idx(:),ov_el(:),tmpgidx(:,:)
logical, parameter :: debug=.false.
character(len=20) :: name
if(psb_get_errstatus() /= 0) return
info=0
err=0
name = 'psb_cd_inloc'
call psb_info(ictxt, me, np)
if (debug) write(*,*) 'psb_cdall: ',np,me
if (.false.) then
loc_row = size(v)
m = loc_row
call psb_sum(ictxt,m)
else
m = maxval(v)
call psb_max(ictxt,m)
end if
n = m
!... check m and n parameters....
if (m < 1) then
info = 10
int_err(1) = 1
int_err(2) = m
else if (n < 1) then
info = 10
int_err(1) = 2
int_err(2) = n
endif
if (info /= 0) then
call psb_errpush(info,name,i_err=int_err)
goto 9999
end if
if (me == psb_root_) then
exch(1)=m
exch(2)=n
exch(3)=psb_cd_get_large_threshold()
call psb_bcast(ictxt,exch(1:3),root=psb_root_)
else
call psb_bcast(ictxt,exch(1:3),root=psb_root_)
if (exch(1) /= m) then
err=550
int_err(1)=1
call psb_errpush(err,name,int_err)
goto 9999
else if (exch(2) /= n) then
err=550
int_err(1)=2
call psb_errpush(err,name,int_err)
goto 9999
endif
call psb_cd_set_large_threshold(exch(3))
endif
if (debug) write(*,*) 'psb_cdall: doing global checks'
allocate(tmpgidx(m,2),stat=info)
if (info /=0) then
info=4000
call psb_errpush(info,name,i_err=int_err)
goto 9999
end if
tmpgidx=0
flag_=1
do i=1,loc_row
if ((v(i)<1).or.(v(i)>m)) then
info = 551
int_err(1) = i
int_err(2) = v(i)
int_err(3) = loc_row
int_err(4) = m
else
tmpgidx(v(i),1) = me+flag_
tmpgidx(v(i),2) = 1
endif
end do
call psb_amx(ictxt,tmpgidx)
if (info ==0) then
int_err(1) = count(tmpgidx(:,2) == 0)
int_err(2) = m
if (int_err(1)>0) then
info = 552
end if
end if
if (info /= 0) then
call psb_errpush(info,name,i_err=int_err)
goto 9999
end if
call psb_nullify_desc(desc_a)
!count local rows number
! allocate work vector
if (psb_cd_choose_large_state(ictxt,m)) then
allocate(desc_a%matrix_data(psb_mdata_size_),&
&temp_ovrlap(m),stat=info)
desc_a%matrix_data(psb_desc_size_) = psb_desc_large_
else
allocate(desc_a%glob_to_loc(m),desc_a%matrix_data(psb_mdata_size_),&
&temp_ovrlap(m),stat=info)
desc_a%matrix_data(psb_desc_size_) = psb_desc_normal_
end if
if (info /= 0) then
info=2025
int_err(1)=m
call psb_errpush(info,name,i_err=int_err)
goto 9999
endif
if (debug) write(*,*) 'PSB_CDALL: starting main loop' ,info
counter = 0
itmpov = 0
temp_ovrlap(:) = -1
if (psb_cd_choose_large_state(ictxt,m)) then
do i=1,m
if (((tmpgidx(i,1)-flag_) > np-1).or.((tmpgidx(i,1)-flag_) < 0)) then
info=580
int_err(1)=3
int_err(2)=tmpgidx(i,1) - flag_
int_err(3)=i
exit
end if
if ((tmpgidx(i,1)-flag_) == me) then
! this point belongs to me
counter=counter+1
end if
enddo
loc_row=counter
! check on parts function
if (debug) write(*,*) 'PSB_CDALL: End main loop:' ,loc_row,itmpov,info
if (info /= 0) then
call psb_errpush(info,name,i_err=int_err)
goto 9999
end if
if (debug) write(*,*) 'PSB_CDALL: error check:' ,err
! estimate local cols number
loc_col = min(2*loc_row,m)
allocate(desc_a%loc_to_glob(loc_col), desc_a%lprm(1),&
& desc_a%ptree(2),stat=info)
if (info == 0) call InitPairSearchTree(desc_a%ptree,info)
if (info /= 0) then
info=2025
int_err(1)=loc_col
call psb_errpush(info,name,i_err=int_err)
goto 9999
end if
! set LOC_TO_GLOB array to all "-1" values
desc_a%lprm(1) = 0
desc_a%loc_to_glob(:) = -1
k = 0
do i=1,m
if ((tmpgidx(i,1)-flag_) == me) then
k = k + 1
desc_a%loc_to_glob(k) = i
call SearchInsKeyVal(desc_a%ptree,i,k,glx,info)
endif
enddo
if (k /= loc_row) then
write(0,*) 'Large cd init: ',k,loc_row
end if
if (info /= 0) then
info=4000
call psb_errpush(info,name)
goto 9999
endif
else
do i=1,m
if (((tmpgidx(i,1)-flag_) > np-1).or.((tmpgidx(i,1)-flag_) < 0)) then
info=580
int_err(1)=3
int_err(2)=tmpgidx(i,1) - flag_
int_err(3)=i
exit
end if
if ((tmpgidx(i,1)-flag_) == me) then
! this point belongs to me
counter=counter+1
desc_a%glob_to_loc(i) = counter
else
desc_a%glob_to_loc(i) = -(np+(tmpgidx(i,1)-flag_)+1)
end if
enddo
loc_row=counter
! check on parts function
if (debug) write(*,*) 'PSB_CDALL: End main loop:' ,loc_row,itmpov,info
if (info /= 0) then
call psb_errpush(info,name,i_err=int_err)
goto 9999
end if
if (debug) write(*,*) 'PSB_CDALL: error check:' ,err
! estimate local cols number
loc_col = min(2*loc_row,m)
allocate(desc_a%loc_to_glob(loc_col),&
&desc_a%lprm(1),stat=info)
if (info /= 0) then
info=2025
int_err(1)=loc_col
call psb_errpush(info,name,i_err=int_err)
goto 9999
end if
! set LOC_TO_GLOB array to all "-1" values
desc_a%lprm(1) = 0
desc_a%loc_to_glob(:) = -1
do i=1,m
k = desc_a%glob_to_loc(i)
if (k.gt.0) then
desc_a%loc_to_glob(k) = i
endif
enddo
end if
l_ov_ix=0
l_ov_el=0
i = 1
do while (temp_ovrlap(i) /= -1)
idx = temp_ovrlap(i)
i=i+1
nprocs = temp_ovrlap(i)
i = i + 1
l_ov_ix = l_ov_ix+3*(nprocs-1)
l_ov_el = l_ov_el + 2
i = i + nprocs
enddo
l_ov_ix = l_ov_ix+3
l_ov_el = l_ov_el+3
if (debug) write(*,*) 'PSB_CDALL: Ov len',l_ov_ix,l_ov_el
allocate(ov_idx(l_ov_ix),ov_el(l_ov_el), stat=info)
if (info /= 0) then
info=2025
int_err(1)=l_ov_ix
call psb_errpush(info,name,i_err=int_err)
goto 9999
end if
l_ov_ix=0
l_ov_el=0
i = 1
do while (temp_ovrlap(i) /= -1)
idx = temp_ovrlap(i)
i = i+1
nprocs = temp_ovrlap(i)
ov_el(l_ov_el+1) = idx
ov_el(l_ov_el+2) = nprocs
l_ov_el = l_ov_el+2
do j=1, nprocs
if (temp_ovrlap(i+j) /= me) then
ov_idx(l_ov_ix+1) = temp_ovrlap(i+j)
ov_idx(l_ov_ix+2) = 1
ov_idx(l_ov_ix+3) = idx
l_ov_ix = l_ov_ix+3
endif
enddo
i = i + nprocs +1
enddo
l_ov_el = l_ov_el + 1
ov_el(l_ov_el) = -1
l_ov_ix = l_ov_ix + 1
ov_idx(l_ov_ix) = -1
call psb_transfer(ov_idx,desc_a%ovrlap_index,info)
if (info == 0) call psb_transfer(ov_el,desc_a%ovrlap_elem,info)
deallocate(temp_ovrlap,stat=info)
if (info /= 0) then
info=4000
call psb_errpush(info,name)
goto 9999
endif
! set fields in desc_a%MATRIX_DATA....
desc_a%matrix_data(psb_n_row_) = loc_row
desc_a%matrix_data(psb_n_col_) = loc_row
call psb_cd_set_bld(desc_a,info)
call psb_realloc(1,desc_a%halo_index, info)
if (info /= psb_no_err_) then
info=2025
call psb_errpush(err,name,a_err='psb_realloc')
Goto 9999
end if
desc_a%halo_index(:) = -1
call psb_realloc(1,desc_a%ext_index, info)
if (info /= psb_no_err_) then
info=2025
call psb_errpush(err,name,a_err='psb_realloc')
Goto 9999
end if
desc_a%ext_index(:) = -1
desc_a%matrix_data(psb_m_) = m
desc_a%matrix_data(psb_n_) = n
desc_a%matrix_data(psb_ctxt_) = ictxt
call psb_get_mpicomm(ictxt,desc_a%matrix_data(psb_mpi_c_))
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
return
end subroutine psb_cd_inloc