In one embodiment, the present invention includes a directory to aid in maintaining control of a cache coherency protocol. The directory can be coupled to multiple caching agents via an interconnect, and be configured to store a entries associated wi…

Computer Architecture 对Cracking Digital VLSI Verification Interview:Interview Success这本书的汉化,最新更新请关注微信公众号 摸鱼范式 [30] RISC和CISC的区别是什么? RSIC:精简指令集.CISC:复杂指令集 RISC结构具有比较少的指令,这些指令是简单的指令(固定长度的指令和较少的寻址模式).CISC结构具有更多的指令,更加复杂,可变长度指令和更加多的寻址方式 RISC具有较小的指令,硬件上相对没…

A multiprocessing system having a plurality of processing nodes interconnected by an interconnect network. To optimize performance during spin-lock operations, a home agent prioritizes the servicing of read-to-own (RTO) transaction requests over the…

BACKGROUND OF THE INVENTION The use of a cache memory with a processor facilitates the reduction of memory access time. The fundamental idea of cache organization is that by keeping the most frequently accessed instructions and data in the fast cache…

A method and apparatus for preserving memory ordering in a cache coherent link based interconnect in light of partial and non-coherent memory accesses is herein described. In one embodiment, partial memory accesses, such as a partial read, is impleme…

提高一个系统的performance,有两种办法: 1) 不断提高一个core的performance,手段就是不断提高freq,减小Vt,这样都会在增加power(dynamic,leakage) 2) 增加processor的个数 arm的big-little processor cluster采用的就是第二个办法,通过Power Gating和DVFS也尽量的减小了功耗. 但是multiprocessor的另一个问题就是cache coherence的问题. 针对cluster内部,arm…

In a computing system, cache coherency is performed by selecting one of a plurality of coherency protocols for a first memory transaction. Each of the plurality of coherency protocols has a unique set of cache states that may be applied to cached dat…

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1. OSGi Knowleage 2. OSGi.Net on Windows 3. OSGi with JAVA 4. OSGi with Qt and C++ 5. Architecture of Gateway using EIP 5.1 EIP = Enterprise Integeration Patter 5.2 Refer to Spring Integration 5.3 Refer to Flume,Strom,Netty, MQ 5.4 Refer to SCADA and…

A data processing system includes a global promotion facility and a plurality of processors coupled by an interconnect. In response to execution of an acquisition instruction by a first processor among the plurality of processors, the first processor…