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Downvoted for the straw man — Intel is currently selling processors with, e.g., 8 cores and 16 threads without any asterisks or caveats. That's in their offici

by 3JPLW 7y ago

Downvoted for the straw man — Intel is currently selling processors with, e.g., 8 cores and 16 threads without any asterisks or caveats. That's in their official marketing materials. Currently. https://a.sellpoint.net/a/Qo3wL1no.jpg https://a.sellpoint.net/a/Qo3wL1no.jpg (via NewEgg) https://www.intel.com/content/www/us/en/products/processors/core/i9-processors.html https://www.intel.com/content/www/us/en/products/processors/...

deleted 7y ago
[deleted]
rrss 7y ago
And it's true... Has Intel ever said "we guarantee that hyperthreads are entirely isolated from one another?"
- 3JPLW 7y ago
  One quick google later: https://www.intel.com/content/www/us/en/architecture-and-technology/hyper-threading/hyper-threading-technology.html https://www.intel.com/content/www/us/en/architecture-and-tec... > By combining one of these Intel® processors and chipsets with an operating system and BIOS supporting Intel® HT Technology, you can: > * Run demanding applications simultaneously while maintaining system responsiveness > * Keep systems protected, efficient, and manageable while minimizing impact on productivity
  - rrss 7y ago
    I have no idea what "keep systems protected" means (and probably neither did the person who wrote that). That statement is a long way from an actual guarantee that there is no way for one logical thread to extract information about another.
- andoriyu 7y ago
  All car makers put asterisk when talk about performance and mileage - it didn't help VW from being fined and prosecuted. We were given certain benchmark numbers and performance target and it all went to shit with a single microcode update. Somehow most people expect CPU not to give random javascript in the Internets a private key from encrypted file system. Intel got off so easy from that drama. Imagine a car marker selling you a car 4 seats, but when backseats are used you might lose steering? Would that be okay? No where it says you get 4 usable seats.

by 3JPLW 7y ago

deleted 7y ago

[deleted]

rrss 7y ago

And it's true... Has Intel ever said "we guarantee that hyperthreads are entirely isolated from one another?"

3JPLW 7y ago
One quick google later: https://www.intel.com/content/www/us/en/architecture-and-technology/hyper-threading/hyper-threading-technology.html https://www.intel.com/content/www/us/en/architecture-and-tec... > By combining one of these Intel® processors and chipsets with an operating system and BIOS supporting Intel® HT Technology, you can: > * Run demanding applications simultaneously while maintaining system responsiveness > * Keep systems protected, efficient, and manageable while minimizing impact on productivity
- rrss 7y ago
  I have no idea what "keep systems protected" means (and probably neither did the person who wrote that). That statement is a long way from an actual guarantee that there is no way for one logical thread to extract information about another.
andoriyu 7y ago
All car makers put asterisk when talk about performance and mileage - it didn't help VW from being fined and prosecuted. We were given certain benchmark numbers and performance target and it all went to shit with a single microcode update. Somehow most people expect CPU not to give random javascript in the Internets a private key from encrypted file system. Intel got off so easy from that drama. Imagine a car marker selling you a car 4 seats, but when backseats are used you might lose steering? Would that be okay? No where it says you get 4 usable seats.