AMD to Disclose Details About Bulldozer Micro-Architecture in August

[hollo]

For what its worth I think hyperthreading is useless near enough. A gimmick from intel. I run various servers, and servers love multiple cpu's, however in a server environment htt only serves to cause problems because apps when allocating threads to processors expect a real processor not some virtual processor that has no dedicated processing power. So eg. you can have 4 core intel with htt so 8 processors and mysql uses processors 1,2 and 4 with 1 and 2 been the same physical core which leads to an unbalanced load.

that's the programmer's fault, not intel's

[Chrysalis]

that's the programmer's fault, not intel's

how can a app programmer fix that?

htt shows up as extra cpu's in the OS. Can maybe lie the blame in the OS in that it should show a difference between a virtual cpu and real cpu, but things like mysql get told its a real cpu.

[Sn0wm@n]

how can a app programmer fix that?

htt shows up as extra cpu's in the OS. Can maybe lie the blame in the OS in that it should show a difference between a virtual cpu and real cpu, but things like mysql get told its a real cpu.

its the programer who has to code for intel's HT implementation iirc

its the same as intel implementing AVX or amd implementing it... no program will benefit from its use until they code for it .....

[Mechanical Man]

You cant be serious. HT aint anything like AVX or other extension. For HT you should not need to program other than you program your program to use multiple cores. If HT is broken in your workload, then switch it off.

And no, its not programmers fault. It is Intels fault.