diff --git a/base/internals/psi_bld_glb_dep_list.F90 b/base/internals/psi_bld_glb_dep_list.F90
new file mode 100644
index 00000000..08311f2b
--- /dev/null
+++ b/base/internals/psi_bld_glb_dep_list.F90
@@ -0,0 +1,119 @@
+!   
+!                Parallel Sparse BLAS  version 3.5
+!      (C) Copyright 2006-2018
+!        Salvatore Filippone    
+!        Alfredo Buttari      
+!   
+!    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.
+!   
+!    
+subroutine psi_i_bld_glb_dep_list(ictxt,loc_dl,length_dl,dep_list,dl_lda,info)
+  use psi_mod, psb_protect_name => psi_i_bld_glb_dep_list
+#ifdef MPI_MOD
+  use mpi
+#endif
+  use psb_penv_mod
+  use psb_const_mod
+  use psb_error_mod
+  use psb_desc_mod
+  use psb_sort_mod
+  implicit none
+#ifdef MPI_H
+  include 'mpif.h'
+#endif
+  !     ....scalar parameters...
+  integer(psb_ipk_), intent(in)  :: ictxt
+  integer(psb_ipk_), intent(out) :: dl_lda
+  integer(psb_ipk_), intent(in)  :: loc_dl(:), length_dl(0:)
+  integer(psb_ipk_), allocatable, intent(out) :: dep_list(:,:)
+  integer(psb_ipk_), intent(out) :: info
+
+
+  !     .....local arrays....
+  integer(psb_ipk_) :: int_err(5)
+
+  !     .....local scalars...
+  integer(psb_ipk_) :: i, proc,j,err_act
+  integer(psb_ipk_) :: err
+  integer(psb_ipk_) :: debug_level, debug_unit
+  integer(psb_mpk_) :: iictxt, icomm, me, np, minfo
+  logical, parameter :: dist_symm_list=.false., print_dl=.false.
+  character  name*20
+  name='psi_bld_glb_dep_list'
+
+  call psb_erractionsave(err_act)
+  debug_unit  = psb_get_debug_unit()
+  debug_level = psb_get_debug_level()
+
+  iictxt = ictxt 
+  info = psb_success_
+
+  call psb_info(iictxt,me,np)
+
+
+  dl_lda = length_dl(me)
+  call psb_max(iictxt, dl_lda)
+
+  if (debug_level >= psb_debug_inner_) &
+       & write(debug_unit,*) me,' ',trim(name),': Dep_list length ',length_dl(me),dl_lda
+  dl_lda = max(dl_lda,1) 
+  allocate(dep_list(dl_lda,0:np),stat=info)
+  if (info /= psb_success_) then 
+    call psb_errpush(psb_err_from_subroutine_,name,a_err='Allocate')
+    goto 9999      
+  end if
+  icomm = psb_get_mpi_comm(iictxt)
+  call mpi_allgather(loc_dl,dl_lda,psb_mpi_ipk_,&
+       & dep_list,dl_lda,psb_mpi_ipk_,icomm,minfo)
+
+  info = minfo  
+  if (info /= psb_success_) then 
+    info=psb_err_internal_error_
+    goto 9999
+  endif
+  if (print_dl) then
+    if (me == 0) then
+      write(0,*) ' Dep_list '
+      do i=0,np-1
+        j = length_dl(i) 
+        write(0,*) 'Proc ',i,':',dep_list(1:j,i)
+      end do
+      flush(0)
+    end if
+    call psb_barrier(ictxt)
+  end if
+
+  call psb_erractionrestore(err_act)
+  return
+
+
+9999 continue
+
+  call psb_errpush(info,name,i_err=int_err)
+  call psb_error_handler(err_act)
+
+  return
+
+end subroutine psi_i_bld_glb_dep_list