Definicja hyper threading technology

Hyperthreading technology (HTT) is the implementation of multithreading in Intel processors of NetBurst architecture (for instance, Pentium 4, Pentium_D, Xeon). Pipeline levels working in parallel internally are assigned multiple parallel command streams and data streams using multiple complete register records and a complex set of controls.

In other words, hyperthreading is parallel processing at the level of thread level parallelism. With hyperthreading both threads and processes can be processed in parallel.

For example, a task or thread can be waiting for the main memory as a result of a cache miss, while a second thread or task can be running in parallel by means of hyperthreading. On the software side a CPU behaves with hyperthreading like a symmetrical multiprocessor system. Therefore, the software does not have to be modified. The operating system only has to be (S)MP-enabled and should support multitasking and kernel-level threads in order to take advantage of hyperthreading.