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- Newsgroups: comp.arch
- Path: 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
- Lines: 23
-
-
- 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
-