嵌套循环

The paper summerizes several general pratical new techniques, such as the analyzers of program profiles, maximum potential parallelism, array privatizability, loop parallelism; the visualizers of the statement data dependence graph, procedural callgraph, loop iteration space graph and interactive tools of array privatization and unimodular transformation; the automatic techniques of array privatization combined data dependence and coverage, the computation of parallelizing unimodular transforming matrix for mult-nested loops, enhanced unimodular transformation with array reduction recognition, non-loop level parallelism revealing technique, dynamic dataflow analysis and optimization of cross-loop local cache reuses, etc.

本文从而概括了若干具有一般性的实用新技术，如：程序计算量分析、最大潜在并行性分析、数组私有化分析、循环并行性分析等动态程序分析技术；语句数据相关图、过程调用图、循环迭代空间相关图、交互数组私有化、交互幺模变换等可视化语义交互分析变换技术等等；总结了若干自动并行化新技术，如：结合相关和覆盖的数组私有化方法、对多层嵌套循环计算幺模并行化变换矩阵的循环幺模变换方法、结合数组规约识别增强幺模变换的技术、发掘非循环级并行性的技术、动态数据流分析技术、优化利用循环间Cache数据局部性的技术等等。

I use a simple nested loop to create the rows in the list-view control and set the column data.

我使用一个简单的嵌套循环创建排在列表视图控件并设置列数据。

This method consists of two nested loops: the first loop iterate through all the registered types.

该方法包括两个嵌套循环：首先遍历所有已注册的各类迭代。

This should be performed by a two-level nested loop going though each index value for each segment.

由于要对每一段的每一个索引执行清空，所以这个操作应该是一个2级嵌套循环。

Your code should never have multiple nested loops (a loop inside a loop inside a loop).

你的代码永远都不要有多个嵌套循环（循环之内的循环，循环内还有循环）。

Database experiments, a simple database, open storage, delete, equivalent to establish nested loop join function.

数据库实验，建立一个简单的数据库，有打开、存储、删除、建立等值嵌套循环连接的功能。

A program with a single loop and a nested loop (presumably loops that execute N times each) is O( N 2 ), even though there is also a O loop present.

程序的单回路和一个嵌套循环（大概循环每执行 N 次）为O （ N 2 ），即使有也是一个为O环本。

Notice how this avoids the nested loop structure you wind up coding with os.walk and the callback functions you implement for os.path.walk, making it seem conceptually simpler.

请注意，这样做避免了用os.walk编码时的嵌套循环结构，也避免了为os.path.walk实现的回调函数，概念上更简单。

According to the spatial query technique and the topological predicates supported by ArcSDE,three methods are proposed for implementing topological join with ArcSDE,including Spatial Constraints Query Topological Join,Predicates Nested Loop Topological Join,and Filter-Refining 2 Phases Topological Join（FR2PTJ）.

根据ArcSDE提供的空间查询技术和拓扑关系谓词，提出了在ArcSDE平台下实现拓扑连接的三种方法，包括基于空间约束查询的拓扑连接方法、基于谓词的嵌套循环拓扑连接方法和过滤精化两阶段拓扑连接方法（FR2PTJ）。

For the thrashing due to true sharing of data, we thoroughly study the relationship between array element accesses and loop indices of a nested loop, present a complete set of ideas, theories, and methods with which the staggering relation and the compacting relation between the threads of the nested loop (either with a single linear function or with multiple linear functions) can be determined at compile-time, and accordingly the nested loop (either perfectly nested or imperfectly nested) can be restructured to avoid the thrashing problem.

使用这套理论和方法，我们在编译时就可以确定出嵌套循环（含单线性函数或多线性函数，紧嵌套或非紧嵌套）各线索间的错位关系，一致错位关系和压缩关系，根据这种关系对嵌套循环进行重构可以使真共享抖动问题得到很好的解决。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。