ALEXANDRIA, Va., March 3 -- United States Patent no. 12,566,704, issued on March 3, was assigned to NVIDIA Corp. (Santa Clara, Calif.).

"Scope tree consistency protocol for cache coherence" was invented by Nicolai Alexander Oswald (San Jose, Calif.), Evgeny Bolotin (Kenmore, Wash.), Daniel Joseph Lustig (Woburn, Mass.), David Nellans (Round Rock, Texas) and Sean J. Treichler (Piedmont, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Various embodiments include techniques for migrating points of coherence (PoCs) in a cache hierarchy. The techniques comprise receiving, at a first cache memory and from a second cache memory, a memory access request associated with a first scope group, and, in response to ...