Unix on top of/in parallel with other operating systems

[Guy Harris]

> In terms of performance, DG/UX seems faster for normal job mixes, though I
> suspect that AOS/VS wins in cases like large fortranish finite element
> cases, because you have more tuning capability.

Huh?  For CPU-bound jobs, the only difference should be in OS overhead.  If
you have only one process running, UNIX definitely doesn't impose much
overhead and I'd be very surprised if AOS/*VS imposed much either.  There
may be more overhead in context-switching and the like.  There may be more
overhead in doing the I/O to read or write the data in under UNIX, I dunno.
-- 
	Guy Harris
	{ihnp4, decvax, seismo, decwrl, ...}!sun!guy
	guy at sun.arpa	(yes, really)