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- From: jfr@RedBrick.COM
- Newsgroups: comp.sys.next.hardware
- Subject: Re: New RISC workstations / 88110 demise
- Keywords: RISC
- Message-ID: <1992Nov5.160900.12965@RedBrick.COM>
- Date: 5 Nov 92 16:09:00 GMT
- References: <1992Nov2.170741.2092@jhunix.hcf.jhu.edu> <Bx5Iwn.to.2@cs.cmu.edu> <1992Nov5.070604.2071@cubetech.com>
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- Organization: Red Brick Systems, Los Gatos, CA
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-
- In article <1992Nov5.070604.2071@cubetech.com> andrew@cubetech.com writes:
- >In article <Bx5Iwn.to.2@cs.cmu.edu> ddj+@cs.cmu.edu (Doug DeJulio) writes:
- >>In article <1992Nov2.170741.2092@jhunix.hcf.jhu.edu> eboltz@jhunix.hcf.jhu.edu (Eric Scott Boltz) writes:
- >>>This week's Info World, "Reports from the Field" claims that NeXT has
- >>>terminated the dual 88110 NRW and will go with the P5 (Pentium) from
- >>>Intel in future machines.
- >>>
- >>>This sucks for a few reasons:
- >>>1. We won't have a faster NeXT till the P5 ships.
- >>>2. We're stuck with Intel.
- >>>3. The NRW will be AS FAST AS A HIGH-END CLONE.
- >>
- >>This last item is not neccesarily true. Let's suppose NeXT goes with
- >>the P5. Remember that the NeXT OS, Mach, already has support for
- >>multiprocessor systems. Doesn't the P5 have enhanced support for
- >>working in multiprocessor systems? Can you imagine a four processor
- >>P5 system, with one processor devoted to a realtime Display PostScript
- >>environment, another devoted to a realtime sound server (including a
- >>port pin-compatible with the current DSP port), and two more for
- >>general purpose CPU tasks? NeXT could put out a wide variety of
- >>systems simply by changing the number of processors.
- >
- >Dedicating processors is stupid (a whole P5 for sound? what a waste).
- >Let mach split everything up on all the processors and use thread
- >priorities to ensure good interactive performance.
- >
- I agree with the comment on a P5 for sound. The exception to this
- would seem to be the Window Server. I would assume there could be
- some extremely useful optimizations both in hardware and software
- that could be made if a complete processor is dedicated to the
- window server process. Since the Window Server has to be constantly
- operating anyway (unlike the sound process and most other processes),
- dedicating a single processor for this app might be useful.
-
- Of course this has to be handled carefully in order to not disrupt
- support for systems where there is no specialized Window Server
- processor. I.e., there still has to be a normal WS process that
- is simply assigned and locked to the WS processor on a multi-process
- system, and has internal smarts that lets it optimize operations
- (such as direct access to a video bus, or something like that)
- in the dedicated processor environment.
-
- Jon Rosen
-