How does Simultaneous Multithreading (SMT) work in AMD Ryzen processors?

18 Eki 23:00

Can someone explain how Simultaneous Multithreading (SMT) is implemented in AMD Ryzen CPUs, what benefits it provides compared to single-threaded cores, and how the scheduler decides to allocate threads? Also, how does it affect performance in multi-core workloads, and any typical use‑cases?