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- Path: sparky!uunet!pipex!warwick!uknet!pavo.csi.cam.ac.uk!rf
- From: rf@cl.cam.ac.uk (Robin Fairbairns)
- Newsgroups: comp.arch
- Subject: Re: COMPAQ PROPOSED SCALABLE I/O ARCHITECTURE
- Keywords: I/O, Point-to-Point, High Performance, Low Cost, Bus
- Message-ID: <1992Dec22.203920.4838@infodev.cam.ac.uk>
- Date: 22 Dec 92 20:39:20 GMT
- References: <1992Dec15.171554.2781@twisto.eng.hou.compaq.com> <1992Dec16.205908.4826@dvorak.amd.com> <1992Dec20.212105.13649@ksmith.uucp> <id.IO0W.TLE@ferranti.com>
- Sender: news@infodev.cam.ac.uk (USENET news)
- Organization: U of Cambridge Computer Lab, UK
- Lines: 36
- Nntp-Posting-Host: lelaps.cl.cam.ac.uk
-
- In article <id.IO0W.TLE@ferranti.com>, peter@ferranti.com (peter da silva) writes:
- |> [re the idea of pluggable buses]
- |> [...]
- |>
- |> I'd like to see the bus specifics decoupled from the software, so you had
- |> some sort of interface that you told "go to unit so-and-so and send this
- |> control/read this data". Then you could use a low-cost hookup with ethernet
- |> type cables, or a high-speed bus type option, without impacting the software.
- |> You could even plug a low-speed adaptor into a high speed bus to hook up
- |> your laptop when you get home.
- |>
- |> If course this would logically be a LAN (um, CAN: Computer Area Network?).
-
- We have a project making this sort of thing here. The network
- technology is actually ATM, and the problem being addressed is that of
- bus overload arising from very high incoming data rates from a gigabit
- network - the data never actually touches a `bus', it goes direct to
- the device it's for.
-
- This is a big win in the case we're interested in, the multimedia
- video stream (which can come direct from our ATM camera in one
- workstation, over one of the ATM LANs we have, and thence to the ATM
- framestore which we'll have real soon now (TM)).
-
-
- But there are interesting other classes of research issue - for
- example, if your processor is separated from its DRAM by an ATM
- interconnect, how's about rescheduling when you get a secondary cache
- miss?
-
- And the name? Well, it's not so much a computer-area as a desk-area:
- it's called a DAN.
- --
- Robin (Campaign for Real Radio 3) Fairbairns rf@cl.cam.ac.uk
- U of Cambridge Computer Lab, Pembroke St, Cambridge CB2 3QG, UK
- "They had twelve years to lay in wait for us" - Bush supporter on Nov 4
-