ABB PM645B 模块 控制器

ABB PM645B 模块 控制器

ABB PM645B 模块 控制器

ABB  PM645B处理器从应用需求上去看，越来越多的用户在使用过程中都会涉及到多任务应用环境，日常应用中用到的非常典型的有两种应用模式。

一种应用模式是一个程序采用了线程级并行编程，那么这个程序在运行时可以把并行的线程同时交付给两个核心分别处理，因而程序运行速度得到极大提高。这类程序有的是为多路 工作站或服务器设计的专业程序，例如专业图像处理程序、非线视频编缉程序、动画制作程序或科学计算程序等。对于这类程序，两个物理核心和两颗处理器基本上是等价的，所以，这些程序往往可以不作任何改动就直接运行在 双核电脑上。

还有一些更常见的日常应用程序。例如Office、IE等，同样也是采用线程级并行编程，可以在运行时同时调用多个线程 协同工作，所以在 双核处理器上的运行速度也会得到较大提升。例如，打开IE 浏览器上网。看似简单的一个操作，实际上浏览器进程会调用代码解析、Flash播放、多媒体播放、Java、 脚本解析等一系列线程，这些线程可以并行地被双核处理器处理，因而运行速度大大加快（实际上IE浏览器的运行还涉及到许多进程级的交互通信，这里不再详述）。由此可见，对于已经采用并行编程的软件，不管是专业软件，还是日常 应用软件，在多核处理器上的运行速度都会大大提高。 日常应用中的另一种模式是同时运行多个程序。

ABB PM645B 模块 控制器

ABB PM645B processor From the application requirements, more and more users in the use of the process will involve the multi-task application environment, the use of daily applications are very typical of two application modes.

One application mode is that a program adopts thread-level parallel programming, so the program can deliver parallel threads to two cores at the same time when running, so the program running speed is greatly improved. Some of these programs are specialized programs designed for multi-channel workstations or servers, such as professional image processing programs, off-line video editing programs, animation programs, or scientific computing programs. For such programs, two physical cores and two processors are basically equivalent, so the programs can often run on dual-core computers without any changes.

There are also more common everyday applications. For example, Office, IE, etc., is also the use of thread-level parallel programming, you can call multiple threads at the same time to work together, so the running speed on the dual-core processor will also be greatly improved. For example, open Internet Explorer to access the Internet. Seemingly a simple operation, in fact, the browser process will call code parsing, Flash playback, multimedia playback, Java, script parsing and a series of threads, these threads can be processed in parallel by the dual-core processor, so the running speed is greatly accelerated (in fact, the operation of IE browser also involves a lot of process level interactive communication, here will not be detailed). It can be seen that for software that has been programmed in parallel, whether it is professional software or daily application software, the speed of running on multi-core processors will be greatly improved. Another pattern in everyday applications is to run multiple programs simultaneously.