zio_init

INTERFACE:

         integer function zio_init(comm)

DESCRIPTION:

Begin ZioLib.

REVISION HISTORY:

       2003-Jan-31 -- first prototype
       2003-Jul-14 -- allowed multiple rectangular blocks per task
       2003-Aug-14 -- added fill component to file descriptor object
       2003-Aug-16 -- support single task mode: ZIO_SPMD undefined

USES:

         implicit none

INPUT PARAMETERS:

         integer, intent(in) :: comm        ! Compute communicator;
                                            ! ignored for non-SPMD

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