make_meta Subroutine

   SUBROUTINE make_meta(buffer, ntotal_images, &
      !! Create meta indices
                        vprow, vpcol, &
                        imgdist, do_merge_rows, &
                        global_indices, &
                        nthreads)
      TYPE(dbcsr_buffer), INTENT(INOUT)                  :: buffer
      INTEGER, INTENT(IN)                                :: ntotal_images, vprow, vpcol
      TYPE(dbcsr_imagedistribution_obj), INTENT(INOUT)   :: imgdist
      LOGICAL, INTENT(IN)                                :: do_merge_rows
      INTEGER, DIMENSION(:), INTENT(IN)                  :: global_indices
      INTEGER, INTENT(IN), OPTIONAL                      :: nthreads

      INTEGER                                            :: size_index

      buffer%matrix%index(dbcsr_slot_size) = &
         buffer%meta_size + dbcsr_num_slots
      size_index = 0
      IF (PRESENT(nthreads)) THEN
!$       size_index = nthreads + 1
      END IF
      buffer%matrix%index(dbcsr_slot_nblks) = &
         (buffer%meta_size - size_index)/3
      buffer%matrix%index(dbcsr_slot_nze) = &
         dbcsr_data_get_size_referenced(buffer%data)
      buffer%matrix%index(dbcsr_slot_dense) = 0
      buffer%matrix%index(dbcsr_slot_nblkrows_total:dbcsr_slot_nfullcols_local) = &
         global_indices(:)
      buffer%matrix%index(dbcsr_slot_type:dbcsr_num_slots) = 0
      ! Virtual coords
      IF (do_merge_rows) THEN
         buffer%matrix%index(dbcsr_slot_home_vprow) = vprow
         buffer%matrix%index(dbcsr_slot_home_vpcol) = MOD(vpcol, ntotal_images)
      ELSE
         buffer%matrix%index(dbcsr_slot_home_vprow) = MOD(vprow, ntotal_images)
         buffer%matrix%index(dbcsr_slot_home_vpcol) = vpcol
      END IF
      buffer%matrix%index(dbcsr_slot_row_p) = 1
      buffer%matrix%index(dbcsr_slot_col_i) = 1
      buffer%matrix%index(dbcsr_slot_blk_p) = 1
      ! thr_c
      size_index = dbcsr_num_slots
!$    IF (PRESENT(nthreads)) THEN
!$       size_index = size_index + nthreads + 1
!$       buffer%matrix%index(dbcsr_slot_thr_c) = dbcsr_num_slots + 1
!$       buffer%matrix%index(dbcsr_slot_thr_c + 1) = size_index
!$    END IF
      buffer%matrix%index(dbcsr_slot_coo_l) = size_index + 1
      buffer%matrix%index(dbcsr_num_slots) = buffer%matrix%index(dbcsr_slot_size)
      !
      ! Reset
      CALL dbcsr_reset_vlocals(buffer%matrix, imgdist)
      !
      ! Repoint index
      buffer%matrix%nblks = 0
      buffer%matrix%nze = 0
      CALL dbcsr_repoint_index(buffer%matrix)
      buffer%matrix%valid = .TRUE.
   END SUBROUTINE make_meta