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- From: spackman@disco-sol.dfki.uni-sb.de (Stephen Spackman)
- Newsgroups: comp.arch.storage
- Subject: Re: Managing a Terabyte (was: Re: Dumping a Gigabyte )
- Followup-To: comp.arch.storage
- Date: 21 Jan 1993 14:14:42 GMT
- Organization: DFKI Saarbruecken GmbH, D-W 6600 Saarbruecken
- Lines: 24
- Message-ID: <SPACKMAN.93Jan21151944@disco-sol.dfki.uni-sb.de>
- References: <1j55eiINNk3d@BSDI.COM> <1993Jan19.135733.838@walter.cray.com>
- <1993Jan20.173950.20531@murdoch.acc.Virginia.EDU>
- Reply-To: stephen@acm.org
- NNTP-Posting-Host: disco-sol.dfki.uni-sb.de
- In-reply-to: sdm7g@elvis.med.Virginia.EDU's message of Wed, 20 Jan 1993 17:39:50 GMT
-
- In article <1993Jan20.173950.20531@murdoch.acc.Virginia.EDU> sdm7g@elvis.med.Virginia.EDU (Steven D. Majewski) writes:
-
- [Lots of unassailable stuff - has anyone not worked this out yet? Then:]
-
- |[ (**) This imbalance has other implications. Processor speeds are
- |increasing faster than disk i/o speeds. At what point is uncompressing a
- |compressed instruction stream, or incremental compilation of a minimal
- |I-code faster than paging in code from virtual memory? ]
-
- You lose big on optimisation this way. When compressing the results of
- translation tasks (whether that's parsing natural language or generating
- code) *for rapid decompression* you want to save the input **and
- selected choicepoint oracles**. As the compression folks will tell you,
- data modelling is the important part.... So the "I-code" shouldn't be so
- minimal, or rather, it should be augmented with the results of any
- computationally expensive decisions that the full compiler might once
- have made. (The advantage to two streams is architecture independence,
- of course).
-
- Damn, here I go giving all my secrets away.... ;-)
- ----------------------------------------------------------------------
- stephen p spackman +49 681 302 5288(o) 5282(sec) stephen@acm.org
- dfki / stuhlsatzenhausweg 3 / d-w-6600 saarbruecken 11 / germany
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