Advanced Micro Devices - Moderated (AMD) Message Board

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Technology Stocks : Advanced Micro Devices - Moderated (AMD)

AMD 236.80

-6.1%

3:59 PM EST

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To: fastpathguru who wrote (239547)	8/29/2007 5:32:16 PM
From: graphicsguru	Read Replies (1) of 275872

esp. when the processor is sitting around doing nothing but retiring in-flight instructions and waiting for the read to fill I think you're underestimating the complexity. There may be relevant writes in flight, and potentially affected reads in flight on other processors. Cache coherency is tricky business to begin with. Adding speculative transactions and making sure that read/write ordering is always correct in all circumstances with partial and re-ordered transactions in flight, is anything but simple.

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