The core concept of the grid is an old saying, that is, "network is computer", this network can be large to the entire Internet, small to a home network. A few years ago, when some foreign companies and media big fried "networks were computer", the researchers were a key technical issue of grid in a concrete manner:
- If the entire Internet is a computer, then what is its hardware? What is its processor, its memory, its external device? What kind of architecture should it be?
- What is the operating system of the grid? What is its process and thread? What is its address space? How to manage its resources?
- What is a grid programming environment and use environment? What is a grid user interface? What is a grid programming language?
- What is grid application? What kind of model and character are they?
- From the user's point of view, what is the difference between the grid and the current Internet / Web? What kind of unique is it available? We can understand the grid research content compared to well-known microcomputers (see Figure 2). A microcomputer system can be divided into four levels, namely hardware, operating system, interface, and application four layers. The second and third layers are often referred to as system software. The grid also has these four layers. "Forbes ASAP" is pointed out that Microsoft's movement is particularly worth noting, because it's .NET strategy, essentially wants to lead and occupational grid operating systems and markets; and Microsoft participates in the standard protocols such as XML and SOAP may become The foundation of the grid interface. It is reported that in addition to .NET, Microsoft is developing a next-generation window operating system that fully support grids, which is planned to be completed in 2005.
The grid research work of the Chinese Academy of Sciences computer is collectively referred to as "Vega Grid". Researchers in calculating the four studios in the six studios participated in the work of the weaver room grid.
At the grid hardware level, the main job of the calculation is to study the next generation of high-performance computers, which will be a grid-oriented super server.
At the grid system software level, the calculation is studying a Grid Computing Protocol Stack, which is known as GPC, and the Vega GOS that effectively supports GCP. At the grid application level, the calculation office mainly launched the research work of information grid and knowledge grid, and the application mesh research of scientific calculations is done by partners.
Compared with other grid research projects at home and abroad, the biggest feature of VEGA GRID is the concept of "Service Grid". There are three main points: (1) it is a universal grid, not just support scientific calculations, but also supports other services, including communication services, data services, information services, computing services, trading services, and more. (2) The service is the basic application mode. That is, the client issues a service request, the grid completes the service, and notifies the client. (3) The main evaluation criteria of the grid are not simply a traditional indicator such as a computational speed, but a set of user satisfaction like the Service Level Agreement, or a service quality evaluation criteria. Compared with traditional internet, weaving stars megadownloadwelines users with the following benefits:
