Shulou(Shulou.com)06/02 Report--

Editor to share with you what is the difference between risc-v architecture and arm. I hope you will gain a lot after reading this article. Let's discuss it together.

Difference: ARM is a closed instruction set architecture with thousands of pages of architecture documents, a complex number of instructions and a large number of versions, which are neither compatible nor modular. RISC-V is a completely open source architecture with only 200 pages of architecture documents and only 40 basic instructions. At the same time, a set of instructions supports all architectures and modularization.

Since the summer of 2010, the Berkeley research team has spent about four years designing and developing a complete new set of instructions. The new instruction set, called RISC-V, has been questioned since it was officially released in 2014, and in 2017 the Indian government said it would heavily fund RISC-V-based processor projects, making RISC-V the de facto national instruction set in India. Then this year from the national policy level to support RISC-V, Shanghai has become the first city in China to list RISC-V as the object of government support. More than 150 domestic and foreign enterprises and research institutions, such as IBM, NXP, Western Digital, Nvidia, Qualcomm, Samsung, Google, Tesla, Huawei, Zhongtianwei, ZTE Weiwei, Ali, Gaoyun and the Computing Institute of the Chinese Academy of Sciences, have joined the RISC-V camp.

After just a few years, RISC-V not only has policy support, but also companies and academics have paid more and more attention to this open source instruction set, and even Arm has felt the pressure. Because since the birth of RlSC-V at the University of Berkeley in 2010, one of the most frequent voices in the industry is that RISC-V may change the existing processor architecture competition dominated by Arm and Intel X86, especially it will have an impact on Arm in consumer, IOT and other embedded markets.

The difference between ARM and RISC-V

Both the ARM architecture and the RISC-V architecture are derived from the reduced instruction computer RISC in the 1980s. The biggest difference between the two lies in its highly respected technical style and thoroughly open model.

ARM is a closed instruction set architecture, many manufacturers who only use ARM architecture can only adjust product frequency and power consumption according to their own needs, and can not change the original design. After decades of development and evolution, CPU architecture has become extremely complex and cumbersome. ARM architecture documents are thousands of pages long, the number of instructions is complex, and there are many versions. They are neither compatible with each other nor support modularization. And there are high patent and architecture licensing problems.

On the other hand, RISC-V, at the beginning of the design, was positioned as a completely open source architecture, avoiding the detour of the development of the computer system for decades. The architecture document is only more than 200 pages, and the number of basic instructions is only more than 40. At the same time, a set of instructions supports all architectures. Modularization allows users to freely customize and configure different instruction subsets according to their needs.

After reading this article, I believe you have a certain understanding of the difference between risc-v architecture and arm. You want to know more about it. Welcome to follow the industry information channel. Thank you for your reading!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.