Posted on Wednesday, April 01 2020 @ 20:32 CEST by Thomas De Maesschalck
AnandTech
reports Intel has published the 38th edition of its ISA Extensions Reference manual. Several things of note were found in the manual, including official confirmation of Alder Lake, a 10nm chip rumored to arrive in 2021. The manual also reveals the BFLOAT16 support will be continued in the upcoming Sapphire Rapids server line.
What Alder Lake (and Sapphire Rapids) gets for instructions includes Architectural LBRs (Last Branch Recording) in order to speed up branches, HLAT (Hypervisor-managed Linear Address Translation), which forces linear address translation, and SERIALIZE, which forces a command to go through a core with all the caches pre-flushed and waits for all buffered writes to have finished before starting. The LBR update helps with performance, the HLAT is primarily for Sapphire Rapids, and the SERIALIZE is to assist with recent security issues.
