对这个cache line读取的时候可以通过home node 的目录直接定位到这个cache,将它的cache line变成shared状态,将目录的脏位变成0,presence bit加上request node的编号,同时还要将新的cache line写回home node的ram中 对这个cache line修改的时候,可以将home node的目录中持有它的cache line invalidate,presence bit改成请...
US20030196047 * 2003年3月31日 2003年10月16日 Kessler Richard E. Scalable directory based cache coherence protocolUS20030196047 2003年3月31日 2003年10月16日 Asher David H. Scalable directory based cache coherence protocolUS20030196047 Mar 31, 2003 Oct 16, 2003 Kessler Richard E. Scalable ...
Directory-based L2 cache一致性协议分析设计 1. 前言处理器从单核到多核的发展过程,缓存的组织形式也发生相应的变化。在多核架构下,层次化的cache产生了私有缓存和共享缓存,ARM早期的多核处理器采用的是集中式的共享L2设计架构,单c… 北极星 缓存一致性之Directory-based cache coherence BoLi2001 基于MOESI协议的...
Directory-Based Cache Coherence in Large-Scale Multiprocessors The usefulness of shared-data caches in large-scale multiprocessors, the relative merits of different coherence schemes, and system-level methods for impro... D Chaiken,C Fields - 《Computer》 被引量: 490发表: 1990年 A Direct ...
A directory-based cache coherency system is disclosed for use in a data processing system having multiple Instruction Processors (IP) and multiple Input/Output (I/0) units coupled through a shared main memory. The system includes one or more IP cache memories, each coupled to one or more IPs...
However, I am actually looking for the information of the directory, which regarding the directory-based cache coherence protocol of the Xeon processors. Specifically, I would like to know the very exact location that this so-called directory structure placed on. Thank you. W...
This paper presents the results for the verification of the S3.mp cache coherence protocol. The S3.mp protocol uses a distributed directory with limited number of pointers and hardware supported overflow handling that keeps processing nodes sharing a dat
As more processing cores are integrated into one chip and feature size continues to shrink,the average access latency for remote nodes using directory-based coherence protocol becomes higher,which greatly impacts system performance. Previous techniques such as data replication and data migration optimize ...
摘要: We propose a new compiler-assisted hardware-controlled cache coherence mechanism for improving the performance of private data caches in shared memory multiprocessors. This new approach augments the run-time information available to a收藏 引用 批量引用 报错 分享 ...
The directory-based cache coherence scheme is an attractive approach to solve the caceh coherence problem in a large-scale shared-memory multiprocessor.However, the exsting directory-based schemes have some problens such as the enormous storage overhead for a directory, the long invalidation latency...