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[s_j_newbury]

But this doesn't make sense unless you can fully utilise all those bits most of the time. If you could have twice the number of half-width computation...

[s_j_newbury]

dungeon Why is more width inherently better? Doesn't it depend on the nature of the problem and algorithm?

[s_j_newbury]

As somebody who has spent many years working on this I have a few thoughts:

* x32 gives a substantial performance boost to a lot of software....

[s_j_newbury]

Kayden I realise it's not something that interests Intel, but what stops this working back to Ivy Bridge, given IVB has a mostly modern graphics pipeline?...

[s_j_newbury]

That isn't really an alternative. How can you make pre-processor based decisions on code inclusion using sizeof()? For simple things it's fine, and...

[s_j_newbury]

Shouldn't POWER9 get similar treatment given the performance killing Spectre mitigation?

[s_j_newbury]

That requires the OS to hide every other logical CPU from the task scheduler for processes and only allow threads from a process already scheduled to...

[s_j_newbury]

Intel would be hit even harder than they are already if they enabled full userspace-userspace Spectre protection in-kernel. I'm not sure why this is...