Article View: comp.arch
Article #11329Re: reentrant
From: Donald Lindsay
Date: Sun, 03 Jan 1993 02:01
Date: Sun, 03 Jan 1993 02:01
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1630 bytes
john@iastate.edu (John Hascall) writes:
>}>The OS world is moving towards multithreading...
>But as far as (popular) commercially available OSes, it would seem not:
[list omitted]
> UNIX: not yet
One can easily multithread programs on lots of "Unix" machines:
Crays, Intel Paragon, KSR/1, Alpha, SPARCstation, Sequent, and so on.
On some of these machines, the vendor rather expects you to do this
(notably, the multiprocessor vendors). On other machines, it is
achieved by using a "threads package" that papers over some
infelicity or other.
Yes, there used to be Unixi where a thread package couldn't be done
properly - as the Ada pioneers found out. [No way to overlap
execution and I/O, for instance.] But Sun has moved towards
threading, and now there's a Posix threads-package standard, so I
felt safe in claiming a trend.
I'd ask Robert how old the idea is, but since it's certainly older
than much of the audience, I'll refrain.
--
Don D.C.Lindsay Carnegie Mellon Computer Science
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Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!howland.reston.ans.net!paladin.american.edu!gatech!psuvax1!rutgers!rochester!cantaloupe.srv.cs.cmu.edu!lindsay From: lindsay+@cs.cmu.edu (Donald Lindsay) Newsgroups: comp.arch Subject: Re: reentrant Summary: more than that Message-ID: <C099MA.CpF.2@cs.cmu.edu> Date: 3 Jan 93 02:01:21 GMT References: <C04zn2.A95.2@cs.cmu.edu> <1993Jan2.122544.26198@sei.cmu.edu> <C08qF4.Knz@news.iastate.edu> Sender: news@cs.cmu.edu (Usenet News System) Organization: School of Computer Science, Carnegie Mellon Lines: 23 Nntp-Posting-Host: gandalf.cs.cmu.edu