Сергей-4030> Чего-то я не уверен.
Блин, да, насчёт прикладников погорячился.
Но опсистема - сама система - знает. Хотя бы из MADT.
"Windows will attempt to utilize the logical processors in the same sequence as the BIOS listed them in the MADT.
Intel direction to BIOS developers is given in the “Intel Netburst Micro-Architecture BIOS Writer’s Guide.” For information about how to obtain this document, see Section 8, “Resources and Call to Action” at the end of this white paper.
Intel's recommendation is to list the first logical processor on each of the physical HT processors before listing any of the second logical processors. This strategy ensures that the operating system attempts to utilize the logical processors in that order. Listing the first logical processor on each of the physical HT processors should help to ensure that the optimal performance is achieved on software that is not HT-aware. Performance on non-HT-aware versions of the Windows operating system, such as Windows 2000, may not be optimal if this direction is not followed in the BIOS.
For more information about operating systems that are not hyper-threading aware, see Section 4.1, “Operating Systems That Are Not Hyper-Threading Aware (Windows 2000)” later in this white paper."
Это отсюда -
http://download.microsoft.com/download/5/.../Hyper-thread_Windows.doc
(Для соблюдения правил: Windows использует процессоры в порядке их перечисления BIOS в MADT. A Intel производителям БИОС с поддержкой НТ советует перечислять их так: сначала все "первые" всех физических, затем все "вторые")