System, method, and apparatuses for remote monitoring

Patent metadata

Field	Value
Publication number	US-10095622-B2
Application number	US-201514983081-A
Country	US
Kind code	B2
Filing date	Dec 29, 2015
Priority date	Dec 29, 2015
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

Embodiments of systems, method, and apparatuses for remote monitoring are described. In some embodiments, an apparatus includes at least one monitoring circuit to monitor for memory accesses to an address space; at least one a monitoring table to store an identifier of the address space; and a tag directory per core used by the core to track entities that have access to the address space.

First claim

We claim:

1. An apparatus comprising:
at least one monitoring circuit to monitor for memory accesses to an address space;
at least one a monitoring table to store an identifier of the address space;
a tag directory per core used by the core to track entities that have access to the address space, wherein the tag directory is a look-up directory and wherein each row of the directory to include a memory size granularity, a hashed address, a tracking granularity, and a remote node indicator.

2. The apparatus of claim 1 , wherein the memory size granularity is one of cache line, page, large page, or huge page.

3. The apparatus of claim 1 , wherein the tracking granularity is by number of node groups.

4. The apparatus of claim 1 , wherein the remote node indicator is a Bloom filter result of nodes that have access to the address space.

5. The apparatus of claim 1 , wherein the remote node indicator is a bit mask of nodes that have access to the address space.

6. The apparatus of claim 1 , further comprising:
a plurality of cores to execute instructions;
caching agent circuitry to process memory requests from at least one of the plurality of cores; and
home agent circuitry to process memory requests from the caching agent and as a home for part of a memory space of the apparatus.

7. The apparatus of claim 6 , wherein the caching agent circuitry and home agent circuitry are a part of the same circuit.

8. The apparatus of claim 1 , wherein the memory size granularity is one of cache line, page, large page, or huge page, the tracking granularity is by number of node groups.

9. The apparatus of claim 8 , wherein the remote node indicator is a Bloom filter result of nodes that have access to the address space.

10. The apparatus of claim 8 , wherein the remote node indicator is a bit mask of nodes that have access to the address space.

11. The apparatus of claim 1 , further comprising:
caching agent circuitry to process memory requests from at least one of a plurality of cores; and
home agent circuitry to process memory requests from the caching agent and as a home for part of a memory space of the apparatus.

12. The apparatus of claim 11 , wherein the caching agent circuitry and home agent circuitry are a part of the same circuit.

Assignees

• Guim Bernat Francesc
• Kumar Karthik
• Blankenship Robert G
• Ramanujan Raj K
• Willhalm Thomas
• Ranganathan Narayan
• Intel Corp

Inventors

• Guim Bernat Francesc
• Kumar Karthik
• Blankenship Robert G
• Ramanujan Raj K
• Willhalm Thomas
• Ranganathan Narayan

Classifications

• G06F2212/622

  State-only directory, i.e. not recording identity of sharing or owning nodes · CPC title

• G06F2212/314

  In storage network, e.g. network attached cache · CPC title

• G06F12/0833 Primary

  in combination with broadcast means (e.g. for invalidation or updating) · CPC title

• G06F12/0875

  with dedicated cache, e.g. instruction or stack · CPC title

• G06F12/0817

  using directory methods · CPC title