psblas3/base/tools/psb_cd_switch_ovl_indxmap.f90

!   
!                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
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!         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
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!    POSSIBILITY OF SUCH DAMAGE.
!   
!    
!
! 
!
Subroutine psb_cd_switch_ovl_indxmap(desc,info)

  use psb_base_mod, psb_protect_name => psb_cd_switch_ovl_indxmap
  use psi_mod


  Implicit None

  !     .. Array Arguments ..
  Type(psb_desc_type), Intent(inout) :: desc
  integer(psb_ipk_), intent(out)               :: info

  !     .. Local Scalars ..
  type(psb_ctxt_type) :: ctxt
  integer(psb_ipk_)   ::  i, j, np, me, n_row, n_col
  integer(psb_lpk_)   ::  mglob
  integer(psb_ipk_)   :: err_act

  integer(psb_lpk_), allocatable :: vl(:)
  integer(psb_ipk_)  :: debug_level, debug_unit, ierr(5)
  character(len=20)  :: name, ch_err

  name='cd_switch_ovl_indxmap'
  info  = psb_success_
  call psb_erractionsave(err_act)
  debug_unit  = psb_get_debug_unit()
  debug_level = psb_get_debug_level()

  ctxt = desc%get_context()
  Call psb_info(ctxt, me, np)

  If (debug_level >= psb_debug_outer_) &
       & Write(debug_unit,*) me,' ',trim(name),&
       & ': start'
  mglob  = desc%get_global_rows() 
  n_row  = desc%get_local_rows()
  n_col  = desc%get_local_cols()

  Allocate(vl(n_col),stat=info)
  if (info /= psb_success_) then 
    call psb_errpush(psb_err_from_subroutine_,name,a_err='Allocate')
    goto 9999      
  end if

  do i=1,n_col
    vl(i) = i
  end do
  call desc%indxmap%l2gip(vl(1:n_col),info)

  if (info /= psb_success_) then
    ierr(1)=info
    call psb_errpush(psb_err_from_subroutine_ai_,name,&
         & a_err='map%l2g',i_err=ierr)
    goto 9999
  end if

  call desc%indxmap%free()
  deallocate(desc%indxmap)
  
  if (psb_cd_choose_large_state(ctxt,mglob)) then 
    allocate(psb_hash_map :: desc%indxmap, stat=info)
  else 
    allocate(psb_list_map :: desc%indxmap, stat=info)
  end if
  
  if (info == psb_success_)&
       & call desc%indxmap%init(ctxt,vl(1:n_row),info)
  if (info == psb_success_) call psb_cd_set_bld(desc,info)
  if (info == psb_success_) &
       & call  desc%indxmap%g2lip_ins(vl(n_row+1:n_col),info)
  if (info /= psb_success_) then
    ierr(1) = info
    call psb_errpush(psb_err_from_subroutine_ai_,name,&
         & a_err='allocate/init',i_err=ierr)
    goto 9999
  end if
  if (n_row /= desc%indxmap%get_lr()) then 
    write(debug_unit,*) me,' ',trim(name),&
         & ': Local rows mismatch ',n_row,&
         &desc%indxmap%get_lr(),desc%indxmap%get_fmt()
  end if
     
  if (n_col /= desc%indxmap%get_lc()) then 
    write(debug_unit,*) me,' ',trim(name),&
         & ': Local cols mismatch ',n_col,&
         &desc%indxmap%get_lc(),desc%indxmap%get_fmt()
  end if
     
  if (debug_level >= psb_debug_outer_) &
       & write(debug_unit,*) me,' ',trim(name),&
       & ': end',desc%indxmap%get_fmt()

  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(ctxt,err_act)

  return

End Subroutine psb_cd_switch_ovl_indxmap