Is hyperthreading dangerous?
Posted May 19, 2005 15:13 UTC (Thu) by khim
In reply to: Is hyperthreading dangerous?
Parent article: Is hyperthreading dangerous?
Does this very theoretical exploit affect multicore systems too?
Yes and no. Yes - it's possible to use the same technique for dual-core systems. But in reality it'll require way too much brute force. The problem with Hyper-Threading is size of L1 cache - it's too small. Multicore systems only share L2 cache (if even that) and it's much bigger so problem becomes pure theory.
to post comments)