I just saw this today, and although i am certain that everyone must
know it already, i am including it.
For itypes that call subroutines, where the subroutines open lots of
files, put a named common in the subroutine that contains what amounts
to dimensioned arrays that hold the file vars. Put a switch in so that
the files are opened only once.
Anecdotally, this appears to work more efficiently than not having the
common. If there are reasons why this is ill-advised, I'd like to see
that as well.
thanks.
John
COMMON /SETUP.STUFF/MY.FILES(15),FIRST.IN.SWITCH
--
john
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