mmm, apples to oranges (kind of)

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Subject: mmm, apples to oranges (kind of)
Name: ludicrous
Date: 6/27/2001 10:47:11 AM (GMT-7)
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In Reply to: Re: not quite posted by tide

the Pentium4 is more of a case of needing applications designed to use SSE floating point rather than the traditional x86 FPU, and designed to work with the P4's high-bandwidth memory architecture without being crippled by its higher latency.

In other words, it starts with whether the application is designed with the P4 in mind to begin with.

IA-64 is a whole new ballgame. Current x86 architectures, including the P4, employ hardware mechanisms for sorting program instructions (scheduling) and executing them out-of-order in the most efficient possible way. IA-64, however, attempted to reduce hardware complexity by off-loading a lot of this scheduling onto the compiler.

In other words, the performance of an IA-64 application literally lives or dies according to how efficiently the compiler was able to optimize it for the IA-64's execution path.

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