The instruction stream, however, is all over the map. In this type of application, the data stream is pretty stagnant, and doesn't change very much.
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The most common situation is where you have a small loop that iterates through a large matrix or series of matrices many, many times.Ĭontrast this to a more traditional, static processing application like a word processor, which uses many different segments of code (menus, wizards, spell checkers, etc.) to operate on a single data file (the document). Or, put more concretely, programs like 3D games and scientific applications deal with very large amounts of data, but the groups of instructions that operate on these large data chunks are usually very small. What this basically means is that the instruction stream doesn't really change all that fast, but the data stream changes constantly. start out by distinguishing media applications from more traditional applications by noting that media apps are examples of what they call dynamic processing. Since this article describes the current situation so well, I'll be drawing on it to frame the discussion. In parts, it sounds as if they're looking ahead into the future and describing the PS2. Dubey entitled, "How Multimedia Workloads Will Change Processor Design." In this article, Diefendorff and Dubey argue that the processing of dynamic media will result in fundamental changes in processor design, and they detail what some of those changes will look like. To kick off the discussion, I'm going to use a very prescient article published in 1996 by Keith Diefendorff and Pradeep K. New wine and old bottles: Dynamic media vs. Specifically, I'll look at the overall designs of the PS2 and PC, and explain how the demands of dynamic media processing have caused the design of the PS2 architecture to differ from the PC's to the point where developers will have to rethink how they move code and data around to render a 3D environment.
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In this article, I want to try and get a handle on some of the aspects of the PS2 that make it so fundamentally different from the current crop of PCs, and in the process shed some light on the difficulties developers will face in going from the PC to the PS2. When the programmers responsible for some of the greatest console games ever made say that the PS2's learning curve is steep, you know something's up.
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In fact, to get an idea of just how bad the situation is, check out this article on MSNBC, which discusses the difficulties that even the most experienced of console programmers are having in learning how to code for the PS2. I got some good feedback from PS2 developers who are also having a hard time with the new hardware. Well, it seems I'm not alone in my struggle to understand the capabilities and limitations of one of the most painfully innovative pieces of hardware to hit the consumer market in quite a long time. The PS2 is such a bizarre and powerful beast that it took me many hours of poring over articles and slide presentations just to get my bearings with it. When I was in the research phase for my recent technical article on the Emotion Engine, I thought for a while there that I was never going to figure out how the PS2 worked.
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