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- Path: sparky!uunet!olivea!sgigate!odin!fido!chopin.asd.sgi.com!grege
- From: grege@chopin.asd.sgi.com (Greg Estes)
- Newsgroups: comp.graphics.animation
- Subject: Re: Amiga Power (Was RE: Babylon 5)
- Message-ID: <1k1ektINNk4t@fido.asd.sgi.com>
- Date: 25 Jan 93 19:22:05 GMT
- References: <1993Jan22.142655.15030@city.cs> <1993Jan24.133854.21680@netcom.com>
- Organization: Silicon Graphics, Inc.
- Lines: 68
- NNTP-Posting-Host: chopin.asd.sgi.com
-
- In article <1993Jan24.133854.21680@netcom.com>, mnemonic@netcom.com (Rev Lebaredian) writes:
- |>
- |> If you are interested in using the Amiga for 3D animation, take a look
- |> at DMIs Vivid 24 board. Fully populated(four TI34020s), DMI claims it
- |> can render 100,000 gourard shaded polygons per second and give you
- |> 160 mflops of raw power. This is compared to 70 mflops on a $200,000
- |> SGI. A fully populated Vivid with a amiga 3000 and an 040 board(for some
- |> mips) comes in at about $12,000. Not to mention that it also gives
- |> 2048x2048x24(1280x1024x24 non-interlaced).
- |>
- |> It is supposed to be fully supported by Real3D v2.0($599) which should
- |> be coming out in a month or two.
- |>
- |> You could concievably network 10 Amigas each with a Vivid24 and 040
- |> to get 1600 Mflos (1.6 GFLOPS!) for about $120,000. When compared to
- |> an equivolent SGI setup, it seems many times more cost efective.
-
- Lord, how I hate "my platform is better than your platform" but...
-
- These statements about "a $200,000 SGI" having 70 MFLOPS and 10 Amigas
- having 1600 MFLOPS for $120,000 are just, shall we say, inaccurate.
-
- You are comparing the rated CPU power of an 8-processor R3000-based SGI to
- the raw MFLOPS rating of a Vivid24 and four 34020s. Let's not mix and
- match the graphics vs. the cpu capability. If you want to talk about
- graphics:
-
- A $100K (not $200K) RealityEngine has 800MFLOPS of processing power in the
- Geometry Engines alone. This is *in addition* to the CPU capability
- of the system and the processing done in the Raster Manager (frame buffer)
- boards. The Geometry Engines are used for polygon transformations
- and image processing and are designed to work for *interactive* graphics,
- not for non-real-time rendering of frames. An 8 GE Crimson RealityEngine
- will process 600,000 textured, anti-aliased polygons/second, which may or
- may not be enough for your application, but no one is going on-air with
- 100,000 shaded (not textured and not anti-aliased) polygons for any thing
- like Babylon5, I would assume. The Crimson RealityEngine can process 1.1M
- shaded polygons, btw.
-
- If you want to compare off-line rendering, line up some ~$15K Indigo R4000s
- or an SGI server and a number of Amigas in the same price range and see what happens.
- Then make a decision based around what makes sense for your application.
- Sometimes an Amiga will make more sense, sometimes not. Any sensible person
- who doesn't live in comp.amiga.advocacy.only land will know that.
-
- There's also a whole boat-load of other things one can do with an advanced
- graphics system that one cannot do on any number of souped-up amigas on
- a network; the stereo, texture-mapping, real-time anti-aliasing, image
- processing, high-def display and other capabilities of RealityEngine don't
- come by stringing a bunch of *any* brand of computer together.
-
- My point is that it's not $200K Silicon Graphics systems that should be
- the comparison point. The better question (as some netters have stated)
- is "does it make sense to string together a bunch of Amigas vs. having
- a smaller number of faster CPUs (like SGI, HP, IBM, DEC, Sun or even
- Cray or Convex for that matter) for rendering frames of animation?" (or
- whatever you're doing). There's a big difference in performance of a
- symmetric multi-processing system like SGIs vs. a lot of boxes on the
- net.
-
- One last thing; I think Amigas are great. I think they are really great
- when equipped with a Video Toaster. I don't see why anyone would need to
- compare it with a high-end SGI unit. They do different things for different
- markets. Indigo vs. Amiga is a much more interesting discussion than Amigas
- vs. $200K SGI.
-
- Greg Estes
- Silicon Graphics
-