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@ -329,3 +329,121 @@ subroutine psb_igatherv(globx, locx, desc_a, info, iroot)
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return
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end subroutine psb_igatherv
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subroutine psb_igather_vect(globx, locx, desc_a, info, iroot)
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use psb_base_mod, psb_protect_name => psb_igather_vect
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implicit none
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type(psb_i_vect_type), intent(inout) :: locx
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integer(psb_ipk_), intent(out), allocatable :: globx(:)
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type(psb_desc_type), intent(in) :: desc_a
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_), intent(in), optional :: iroot
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! locals
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integer(psb_mpik_) :: ictxt, np, me, root, iiroot, icomm, myrank, rootrank
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integer(psb_ipk_) :: ierr(5), err_act, n, ilocx, iglobx, jlocx,&
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& jglobx, lda_locx, lda_globx, m, k, jlx, ilx, i, idx
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integer(psb_ipk_), allocatable :: llocx(:)
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character(len=20) :: name, ch_err
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name='psb_igatherv'
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if(psb_get_errstatus() /= 0) return
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info=psb_success_
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call psb_erractionsave(err_act)
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ictxt=desc_a%get_context()
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! check on blacs grid
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call psb_info(ictxt, me, np)
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if (np == -1) then
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info = psb_err_context_error_
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call psb_errpush(info,name)
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goto 9999
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endif
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if (present(iroot)) then
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root = iroot
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if((root < -1).or.(root > np)) then
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info=psb_err_input_value_invalid_i_
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ierr(1)=5; ierr(2)=root;
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call psb_errpush(info,name,i_err=ierr)
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goto 9999
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end if
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else
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root = -1
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end if
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jglobx=1
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iglobx = 1
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jlocx=1
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ilocx = 1
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m = desc_a%get_global_rows()
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n = desc_a%get_global_cols()
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lda_globx = m
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lda_locx = locx%get_nrows()
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k = 1
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! there should be a global check on k here!!!
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call psb_chkglobvect(m,n,lda_globx,iglobx,jglobx,desc_a,info)
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if (info == psb_success_) &
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& call psb_chkvect(m,n,locx%get_nrows(),ilocx,jlocx,desc_a,info,ilx,jlx)
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_chk(glob)vect'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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if ((ilx /= 1).or.(iglobx /= 1)) then
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info=psb_err_ix_n1_iy_n1_unsupported_
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call psb_errpush(info,name)
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goto 9999
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end if
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call psb_realloc(m,globx,info)
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if (info /= psb_success_) then
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info=psb_err_alloc_dealloc_
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call psb_errpush(info,name)
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goto 9999
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end if
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globx(:) = izero
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llocx = locx%get_vect()
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do i=1,desc_a%get_local_rows()
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call psb_loc_to_glob(i,idx,desc_a,info)
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globx(idx) = llocx(i)
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end do
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! adjust overlapped elements
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do i=1, size(desc_a%ovrlap_elem,1)
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if (me /= desc_a%ovrlap_elem(i,3)) then
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idx = desc_a%ovrlap_elem(i,1)
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call psb_loc_to_glob(idx,desc_a,info)
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globx(idx) = izero
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end if
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end do
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call psb_sum(ictxt,globx(1:m),root=root)
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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_igather_vect
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