Multi-Core Scaling Performance Of AMD's Bulldozer
Phoronix: Multi-Core Scaling Performance Of AMD's Bulldozer
There has been a lot of discussion in the past two weeks concerning AMD's new FX-Series processors and the Bulldozer architecture. In particular, with the Bulldozer architecture consisting of "modules" in which each has two x86 engines, but share much of the rest of the processing pipeline with their sibling engine; as such, the AMD FX-8150 eight-core CPU only has four modules. In this article is a look at how well the Bulldozer multi-core performance scales when toggling these different modules. The multi-core scaling performance is compared to AMD's Shanghai, Intel's Gulftown and Sandy Bridge processors.
I think it may have also been interested to enable the cores together in modules
rather than separately 1 per module.
That might allow them to share cached data more efficiently between threads?
And I think at lower core counts it could enable more aggressive turbo frequencies.
But this was an interesting test as well.