Multithread SMT
Multithread SMT
Posted Aug 10, 2023 5:56 UTC (Thu) by dxin (guest, #136611)In reply to: Multithread SMT by zdzichu
Parent article: Another round of speculative-execution vulnerabilities
Those are not SMT because the thread doesn't run simultaneously, but scheduled round-robin.
Technically it's "fine-grained multi-threading", like most GPUs. The switching threads each cycle in round-robin style makes the wall-time of each cycle much longer, from individual thread's point of view, so pipeline delays doesn't exist.
Technically it's "fine-grained multi-threading", like most GPUs. The switching threads each cycle in round-robin style makes the wall-time of each cycle much longer, from individual thread's point of view, so pipeline delays doesn't exist.