include file: CNTL_IO 36
!====================== COMDECK CNTL_IO ========================           CNTL_IO.2      
! Description:                                                             CNTL_IO.3      
!                                                                          CNTL_IO.4      
!     Defines the sector size for well-formed transfers on Cray            CNTL_IO.5      
!     Research systems.  Disk addresses must start on a sector             CNTL_IO.6      
!     boundary, and transfers must be a number of sectors.  Disk           CNTL_IO.7      
!     word addresses start at 0.                                           CNTL_IO.8      
!                                                                          CNTL_IO.9      
!     On the T3E, well-formed transfers must also start on a               CNTL_IO.10     
!     cache-line boundary in memory.                                       CNTL_IO.11     
!                                                                          CNTL_IO.12     
!   4.3    30/04/97  New deck       B. Carruthers, Cray Research           CNTL_IO.13     
!   4.4    27/10/97  Remove DATA statement. C.P. Jones                     GCJ1F404.5      
!                                                                          CNTL_IO.14     
C                                                                          CNTL_IO.15     
      INTEGER UM_SECTOR_SIZE    ! Sector size on disk for I/O              CNTL_IO.16     
C                                                                          CNTL_IO.17     
      COMMON / CNTL_IO / UM_SECTOR_SIZE                                    CNTL_IO.18