By: Groo (Charlie.delete@this.theinquirer.net), June 28, 2007 12:10 am
Room: Moderated Discussions
Andi Kleen (ak-rwt@muc.de) on 6/27/07 wrote:
---------------------------
>If you want to look for buggy CPUs you should rather
>look for embedded CPUs which are often really bad.
>e.g. they often ship with bugs that require compiler
>workarounds which would never fly in the x86 world
>and generally require OS level workarounds (which is already
>very rare in the x86 world, although it happens)
>Ironically they have much less transistors than the x86s.
>
>And some other chips like graphic cards are even
>worse -- since they don't have a fixed ISA they
>add lots of functionality and then only use the (varying)
>subset that actually ended up working in the driver.
>
You should see game consoles.... Ouch. Not only that, but the bugs in V1 need to be replicated in the later revs as well. Talk about a pain in the ass.
-Charlie
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>If you want to look for buggy CPUs you should rather
>look for embedded CPUs which are often really bad.
>e.g. they often ship with bugs that require compiler
>workarounds which would never fly in the x86 world
>and generally require OS level workarounds (which is already
>very rare in the x86 world, although it happens)
>Ironically they have much less transistors than the x86s.
>
>And some other chips like graphic cards are even
>worse -- since they don't have a fixed ISA they
>add lots of functionality and then only use the (varying)
>subset that actually ended up working in the driver.
>
You should see game consoles.... Ouch. Not only that, but the bugs in V1 need to be replicated in the later revs as well. Talk about a pain in the ass.
-Charlie