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也是关于最近的TLB Bug事件
原文:
http://hardware.slashdot.org/firehose.pl?id=410085&op=view
Errata are not uncommon with new processors, but a problem with the TLB logic in AMD's quad-core Opteron and Phenom processors appears to be quite serious. The errata is so severe that AMD has issued a "stop ship" order on all quad-core Opterons. AMD has also blamed it for the delay of the 2.4GHz Phenom, despite the fact that the errata is unrelated to clock speed. A BIOS-based workaround for the issue has been made available to motherboard makers, but it apparently carries a 10-20% performance penalty. What's more disturbing is that AMD knew of the errata and the potential performance hit associated with fixing it before it launched the Phenom processor. Hardware provided to the press for reviews did not include the fix, conveniently overstating Phenom performance.
在新处理器中出现错误(Errata),也就是俗称的bug,确实不算怪事,但AMD的的Opteron和Phenom的四核处理器的TLB逻辑问题貌似事情大条了,该Bug如此严重,甚至迫使AMD让所有四核op“停止出货”(stop ship) AMD也将2.4G Phenom的推迟上市归罪于该BUG,尽管事实上该bug与时钟频率并没有联系。AMD已经为主板制造商提供了一个基于BIOS的修补程序,但该修补程序会导致10-20%的明显性能降低。更令人不爽的是AMD在Phenom发布前就知道这一问题及修补可能带来的性能下降,提供给媒体用于评测的硬件并没有包括该补丁,轻而易举地令phenom的性能被高估了 。
丢弃幻想吧.....
[ 本帖最后由 boris_lee 于 2007-12-6 17:10 编辑 ] |
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