Article View: comp.arch
Article #2043Re: Instruction (dis)continuation
From: Rajiv Patel
Date: Tue, 29 Aug 1989 17:45
Date: Tue, 29 Aug 1989 17:45
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1580 bytes
In article <26418@winchester.mips.COM> mash@mips.COM (John Mashey) writes:
> The more fundamental issue is how much state does it take
^^^^^^^^^^^^^^^^^^^^^^^^^^^
> to figure out where you were and get back there. At the
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> minimum, this is just a PC. At worst, the processor dumps at
> lot of mysterious stuff somewhere.
>--
>-john mashey DISCLAIMER: <generic disclaimer, I speak for me only, etc>
To further the discussion on this issue ....
There has been lots of discussion about superscalar and VLIW architectures.
How about instruction continuation and/or restart for these architectures.
It seems that a N way super-scalar machine would need N PC's and a lot of
state information. For VLIW machines it seems that instruction continuation
might be better for restart might first need to roll back partially completed
operations.
Rajiv Patel.
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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!ames!sun-barr!newstop!sun!sunshade!rajivp From: rajivp@sunshade.Sun.COM (Rajiv Patel) Newsgroups: comp.arch Subject: Re: Instruction (dis)continuation Message-ID: <123909@sun.Eng.Sun.COM> Date: 29 Aug 89 17:45:03 GMT References: <AGLEW.89Aug21205533@chant.urbana.mcd.mot.com> <1989Aug24.215104.156@mentor.com> <231@ssp1.idca.tds.philips.nl> <2345@oakhill.UUCP> <204@bbxeng.UUCP> <5990@pt.cs.cmu.edu> <26418@winchester.mips.COM> Sender: news@sun.Eng.Sun.COM Reply-To: rajivp@sun.UUCP (Rajiv Patel) Organization: Sun Microsystems, Mountain View Lines: 21