查询词典 cache memory

According to one embodiment, a method of coherency management in a data processing system includes holding a cache line in an upper level cache memory in an exclusive ownership coherency state and thereafter removing the cache line from the upper level cache memory and transmitting a castout request for the cache line from the upper level cache memory to a lower level cache memory.

根据一个实施例，数据处理系统中一致性管理的方法包括：在处于独占所有权一致性状态的较高级别高速缓存存储器中保存高速缓存线，以及其后从较高级别高速缓存存储器移除高速缓存线，并且从较高级别高速缓存存储器发送对高速缓存线的掷出请求到较低级别高速缓存存储器。

The first level cache is split caches : instruction cache and data cache, each of which is single-cycle cache with direct-mapped organization. The second level cache is a hybrid and multicycle cache with two-way skewed-associative organization.

NRS4000是一个32位的嵌入式RISC产品，时钟频率为20MHz，采用5级流水技术，实现了面向寄存器的指令集（共128条指令），支持了寄存器窗口切换和基于优先级的中断、故障、跟踪、通信等功能，是一个完整的微处理器系统。

The failure rate; that failure rate monitor is unit trends monitoring to apply below distinct Cache size with the process and the Cache that increase advantageous position differentiates algorithm expanded the Cache with conventional optimum failure rate differentiates algorithmic, numerary of Cheng of basis application line differs to give application to gift when undertaking Cache differentiates different power worth, the application that has more line Cheng in order to make obtains more sharing Cache, improve integral performance of the system thereby.

失效率监控器以进程为单位动态监控在不同的Cache容量下应用的失效率；而加权Cache划分算法扩展了传统的失效率最优的Cache划分算法，根据应用线程数目的不同在进行Cache划分时给应用赋予不同的权值，以使具有更多线程的应用获得更多的共享Cache，从而提高系统的整体性能。

There used to be two primary methods to optimize program data locality: the first is to analyze cache behavior of program data, then basing on cache behavior model, build a program analysis tool which shows the bottlenecks of data cache performance and hence directs programmer to tune performance of data cache; the second is program transformation by an optimizing compiler or an optimizing tool, and data cache performance is optimized in the transformation.

过去在这方面的工作有两个重要的思路：一是针对程序运行时的访问数据，利用相关的Cache行为模型，建立一些程序分析工具，从源代码级给出程序Cache性能的瓶颈，指导程序员通过程序变换来优化程序的局部性，从而提高Cache性能；二是在编译器上开发编译优化过程，或者开发专门的程序优化工具，通过对程序进行分析，在此基础上自动进行程序变换，包括代码变换和数据变换两种，优化程序的局部性，从而提高 Cache性能。

By default attribute cache and directory entry cache are enabled, file data cache and file entry cache are disabled.

默认情况下，属性缓存及目录项缓存是开启的，而文件数据缓存和文件项输入缓存则是关闭的

The characteristics of FIFO, double-port RAM and ping-pang cache structure were compared. The principle and features of ping-pang cache structure were discussed, and a real ping-pang cache structure was also given which consisted of high-speed, large capacity SRAM and FPGA. For a video processing system, this ping-pang cache structure is easy to interface with AD, DA and DSP.

文中比较了FIFO、双口RAM、乒乓缓存结构三种数据缓存电路的优缺点，讨论了乒乓缓冲控制器的结构和原理，并以高速、大容量的SRAM 以及FPGA器件为基础，设计了一种适应于高速DSP图像处理系统的乒乓缓存结构，其特点是速度快、所需器件少，易于与DSP器件接口。

Net reduction of fractions to a common denominator does not put server of a cache, the user visits cache server actually, server of again former website reads cache server take content, will read extraction content cache to arrive this locality.

网通分别放一个缓存服务器，用户实际访问缓存服务器，缓存服务器再原网站服务器读取内容，并将已经读取的内容缓存到本地。

Through the discussion of the study history of memory, the research problems and the significance of this study were brought forward, the concept of memory was clarified, the latest research of brain science was reviewed; On this basis, memory types and its measurement, memory process and its rules were studied documentarily and generalized systematically; This research analysed emphatically and concluded general and special methods of memory, the functions, usage means and applied scopes of many kinds of scientific memory methods were explored deeply with some typical psychology experimental results; Then affects of objective factors included external environment and material characteristics, subjective factors such as purpose, attention, emotion, knowledge, confidence and so on , were examined deeply; At last, it studied and analysed the cultivation and training of memory, practical usage of scientific memory methods, and put forward educational suggestions and training measures.

首先从记忆的研究历史切入本研究的问题背景与研究意义，阐明了记忆的概念、综述了记忆脑科学方面的最新进展；在此基础上，对记忆的分类与测量、基本过程与规律进行了文献研究与系统概括；着重分析并归结出了记忆的一般方法与特殊方法，结合代表性的心理学实验成果深入分析了各种科学记忆方法的功用、具体操作方法及应用范围；深入剖析了外部情境、材料特征等客观因素及目的、注意、情绪、知识、信心等主观因素对记忆的影响；最后在先前诸研究的基础上，对记忆的培养与训练及记忆术的实际应用加以分析和研究，提出了记忆培养训练的具体措施与教育建议，并实例说明了记忆术的具体应用。

CPU cache size is also one of the important indicators, but also the structure of the cache on the CPU speed and size of the impact of very large, CPU cache in the operating frequency is extremely high and the processor is generally the same frequency of operation, efficiency is much larger than system memory and hard disk.

缓存大小也是CPU的重要指标之一，而且缓存的结构和大小对CPU速度的影响非常大，CPU内缓存的运行频率极高，一般是和处理器同频运作，工作效率远远大于系统内存和硬盘。

In terms of memory hierarchy, we investigated how to improve the cache hit rate and localize data according to the characteristics of cache, master memory, local disk and remote disk in cluster systems. As for communication, features of cluster systems and different cluster internal networks are examined. Two popular parallel programming models - message passing model and share memory model - are analyzed in terms of how do they affect the cluster performance and how can we improve the cluster performance.

在处理器层面，分析了现代处理器中常用的一些技术，包括超线程技术、超长指令技术和NUMA架构等，对不同特点的程序的性能影响和如何充分利用处理器中的一些技术提升性能；在存储层次上，结合机群系统上Cache、主存、本地辅存及网络存储的存储层次的特点，分析了数据局部性、Cache命中率等对性能的影响以及提出如何提高数据局部性；通讯系统层面分析了不同机群通讯系统及不同机群通讯网络的特点；在编程模式方面，分析和比较了目前最常用两种并行编程模式--消息传递编程模式和共享存储编程模式，在机群系统上对性能的影响因子以及提出如何提高性能的方法。

The shaping method of noncircular part and the tool holder's radial motion characters in noncircular turning process are discussed in detail in the thesis.

论文详细研究了非圆零件的成型方法和加工过程中刀架的径向运动规律。

I have not really liked him,I do not like his this kind of disposition.

我没有真的喜欢他，我不喜欢他的这种性格。