公开(公告)号：US20210232501A1

公开(公告)日：2021-07-29

申请号：US16776416

申请日：2020-01-29

Applicant: Advanced Micro Devices, Inc.

Inventor： Weon Taek Na ,  Yasuko Eckert ,  Mark H. Oskin ,  Gabriel H. Loh ,  William Louie Walker ,  Michael Warren Boyer

IPC: G06F12/0815 ,  G06F16/22

Abstract: An approach for tracking data stored in caches uses a Bloom filter to reduce the number of addresses that need to be tracked by a coherence directory. When a requested address is determined to not be currently tracked by either the coherence directory or the Bloom filter, tracking of the address is initiated in the Bloom filter, but not in the coherence directory. Initiating tracking of the address in the Bloom filter includes setting hash bits in the Bloom filter so that subsequent requests for the address will “hit” the Bloom filter. When a requested address is determined to be tracked by the coherence directory, the Bloom filter is not used to track the address.

公开(公告)号：US11586539B2

公开(公告)日：2023-02-21

申请号：US16713940

申请日：2019-12-13

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： Weon Taek Na ,  Jagadish B. Kotra ,  Yasuko Eckert ,  Steven Raasch ,  Sergey Blagodurov

IPC: G06F12/08 ,  G06F12/0811 ,  G06F12/0871 ,  G06F9/30 ,  G06F12/0882 ,  G06F12/1027 ,  G06F12/0831

Abstract: A processing system selectively allocates space to store a group of one or more cache lines at a cache level of a cache hierarchy having a plurality of cache levels based on memory access patterns of a software application executing at the processing system. The processing system generates bit vectors indicating which cache levels are to allocate space to store groups of one or more cache lines based on the memory access patterns, which are derived from data granularity and movement information. Based on the bit vectors, the processing system provides hints to the cache hierarchy indicating the lowest cache level that can exploit the reuse potential for a particular data.

公开(公告)号：US11226900B2

公开(公告)日：2022-01-18

申请号：US16776416

申请日：2020-01-29

Applicant: Advanced Micro Devices, Inc.

Inventor： Weon Taek Na ,  Yasuko Eckert ,  Mark H. Oskin ,  Gabriel H. Loh ,  William Louie Walker ,  Michael Warren Boyer

IPC: G06F12/0815 ,  G06F16/22 ,  G06F12/0831

Abstract: An approach for tracking data stored in caches uses a Bloom filter to reduce the number of addresses that need to be tracked by a coherence directory. When a requested address is determined to not be currently tracked by either the coherence directory or the Bloom filter, tracking of the address is initiated in the Bloom filter, but not in the coherence directory. Initiating tracking of the address in the Bloom filter includes setting hash bits in the Bloom filter so that subsequent requests for the address will “hit” the Bloom filter. When a requested address is determined to be tracked by the coherence directory, the Bloom filter is not used to track the address.