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Article #11155

Alpha and Super-pipelining

#11155
From: Chris Perleberg
Date: Wed, 30 Dec 1992 17:57
22 lines
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After reading the material available about the Alpha, I noticed that it was
mentioned a few times that the first implementation of the Alpha, the 21064,
is *super-pipelined* as well as superscalar.  For example, in "infosheet.txt"
that is available on gatekeeper.dec.com the following is stated:

>    Digital's 21064 Microprocessor
>    ....
>    The 21064 is a super-scalar, super-pipelined implementation of the
>    Alpha architecture. Super-pipelined means that an instruction is issued
>    to the functional units at every clock tick and the results are
>    pipelined. Being super-scalar, the architecture allows the instruction
>    unit to issue two instructions per clock tick, resulting in
>    significantly higher throughput and performance.

After reading the Data Sheet of the 21064, I find nothing that seems to
indicate the 21064 is super-pipelined, at least in terms of the common
definition of super-pipelined.  Is DEC redefining the word "super-pipeline"?
Anybody out there that can explain?

	Chris Perleberg
	pchris@dcc.uchile.cl
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Message-ID: <1992Dec30.175717.15249@dcc.uchile.cl>
Path: arc1-ca.pugleaf.net!sparky!uunet!uchdcc!pchris

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Newsgroups: comp.arch
Path: arc1-ca.pugleaf.net!sparky!uunet!uchdcc!pchris
From: pchris@dcc.uchile.cl (Chris Perleberg)
Subject: Alpha and Super-pipelining
Originator: pchris@pehuen
Sender: usenet@dcc.uchile.cl (Network News)
Message-ID: <1992Dec30.175717.15249@dcc.uchile.cl>
Date: Wed, 30 Dec 1992 17:57:17 GMT
Reply-To: pchris@dcc.uchile.cl
Nntp-Posting-Host: pehuen.dcc.uchile.cl
Organization: Universidad de Chile, Depto. de Ciencias de la Computacion
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