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• #72 Raymond titán P.H. #68

  Új Válasz 2007-12-20 22:40:49 #72

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  Raymond

  titán

  válasz P.H. #68 üzenetére

  LOL, egy kis tortenelem a masodik linkbol amely meg a HP/Compaq merger elott irodott:

  [I]"Unfortunately, as the x86 nears its 25th birthday, it's clear (to Intel, at least) that it's been pushed to its limits. This is why Intel is working with HP to base their IA-64 architecture on the PA-RISC instruction set. The IA-64 architecture is an interesting blend. On the one hand, it (supposedly) supports object-code compatibility with the previous generation x86 family (though at reduced performance levels). Obviously, it's a RISC architecture since it was originally based on Hewlet-Packard's PA-RISC (PA=Precision Architecture) design. However, Intel and HP have extended on the RISC design by using another technology: Very Long Instruction Word (VLIW) computing. The idea behind VLIW computing is to use a very long opcode that handle multiple operations in parallel. In some respects, this is similar to CISC computing since a single VLIW "instruction" can do some very complex things. However, unlike CISC instructions, a VLIW instruction word can actually complete several independent tasks simultaneously. Effectively, this allows the CPU to execute some number of instructions in parallel.

  Intel's VLIW approach is risky. To succeed, they are depending on compiler technology that doesn't yet exist. They made this same mistake with the iAPX 432. It remains to be seen whether history is about to repeat itself or if Intel has a winner on their hands."[/I]

  De reg volt mar ez is. Es mara a valasz is megvan a feltett kerdesre

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