Loongson processor

Origin of the product

On September 28, 2002, the release of the Godson-1 CPU chip caused a large response in various media including the Internet, among which encouragement and appreciation There are more and support, but some are doubtful, questioned or even opposed. At that time, I collected some questions from netizens and reporters about Godson, and wanted to answer one by one to clarify some facts, but there were concerns. Because the speeches in the media are very different from the academic papers we publish after doing research. Academic papers are published after reviewing by many peer experts. Generally, there are no major problems. Even if there are doubts, when discussing with the author, both parties have a lot of consensus and a good basis for discussion. The authors in the media have different industries, professional backgrounds, interests, etc., and some issues are really difficult to explain. It happened that Academician Li Guojie’s "Strategic Thinking on the Development of Godson CPUs" discussed the development strategy of the Godson series, and Dr. Hu Weiwu’s "Our Godson No. 1" introduced the chip development process. I also wrote an article "Also talk about how to develop China’s "CPU Chip" can basically answer most of the doubts. My idea of ​​writing another article was dispelled by the idea of ​​"Actions speak louder than words", waiting to prove everything with the success of Loongson's follow-up chip research and development and industrialization.

However, some of the questions mentioned above are still circulated in certain areas, and may have an adverse impact on the in-depth industrialization of Godson and subsequent research and development work. In the face of such a situation, although I don't want to do the "fancy style" of "speaking but not practicing", I can't be willing to be the "stupid style" of "only practicing but not talking".

Product overview

The Loongson-1 CPU is manufactured using 0.18um CMOS process, which has good low power consumption and an average power consumption of 0.5 watts. A special design is provided on-chip The hardware mechanism can resist buffer overflow attacks. The hardware fundamentally resists the danger of buffer overflow attacks, thereby greatly increasing the security of the server. Network security equipment based on the Loongson CPU can meet the needs of national government departments and corporate agencies for network and information system security.

Performance parameters

Support register renaming, dynamic scheduling, out-of-order execution

Product model

The Loongson-2 processor is manufactured using a 180nm CMOS process, with 13.5 million transistors integrated on the chip, with a silicon area of ​​6.2 mm × 6.7 mm, a maximum frequency of 500 MHz, and a power consumption of 3 -5 watts. Loongson 2 has realized an advanced four-issue superscalar super-pipeline structure, with 64KB of on-chip first-level instruction and data caches, and up to 8MB of off-chip second-level caches. The measured performance of the Loongson-2 SPEC CPU2000 standard test program is 8-10 times that of the Loongson-1. The Linux-PC system based on Godson-2 can satisfy most desktop applications.

Loongson-2 enhanced processor

Loongson-2 enhanced processor (ie Loongson 2E) is a general-purpose RISC processor that implements 64-bit MIPSⅢ instruction set, using 90nm CMOS technology, the wiring layer is seven layers of copper metal, the number of chip transistors is 47 million, the chip area is 6.8mm×5.2mm, the highest operating frequency is 1GHz, the typical operating frequency is 800MHz, and the measured power consumption is 5-7 watts. The Loongson 2E has an on-chip 128KB first-level cache, 512KB second-level cache, a single-precision peak floating-point operation speed of 8 billion operations/sec, and a double-precision floating-point operation speed of 4 billion operations/sec.

Product experience

On March 28, 2007, the Institute of Computing Technology of the Chinese Academy of Sciences and STMicroelectronics (ST) held a Loongson processor technology cooperation and product launch conference in the Great Hall of the People in Beijing. Xu Jialu, vice chairman of the Standing Committee of the National People's Congress, Lou Qinjian, vice minister of the Ministry of Information Industry, and Li Zhigang, secretary general of the Chinese Academy of Sciences, attended the meeting.

In October 2006, China and France signed a framework agreement on the cooperation between the Chinese Academy of Sciences and STMicroelectronics in the development of Godson multi-core processors. Chinese President Hu Jintao and French President Chirac attended the agreement. Signing ceremony.

On March 18, 2006, the Loongson-2 enhanced processor CZ70 was successfully taped out. On September 13, it passed the appraisal organized by the Ministry of Science and Technology. Minister Xu Guanhua visited the appraisal meeting in person.

In May 2005, the Loongson research team sent key members to Jiangsu to participate in the establishment of Loongson Industrialization Base (the predecessor of Longmeng Technology).

On January 31, 2005, the Loongson-2 appraisal meeting organized by the Chinese Academy of Sciences was held. On April 18, 2005, the Loongson-2 appraisal meeting was held in the Great Hall of the People, jointly organized by the Ministry of Science and Technology, the Chinese Academy of Sciences and the Ministry of Information Industry. At the Loongson-2 conference, Gu Xiulian, vice chairman of the Standing Committee of the National People's Congress, attended the Loongson-2 conference.

In February 2005, President Hu Jintao and other party and state leaders visited the Loongson processor exhibition when they visited the exhibition on the 55th anniversary of the founding of the Chinese Academy of Sciences.

In November 2004, Premier Wen Jiabao of the State Council visited the Institute of Computing Technology of the Chinese Academy of Sciences and listened to a report on the development of Godson.

On September 28, 2004, the Loongson 2C chip DXP100 was successfully taped out after many improvements.

In January 2004, the Loongson Laboratory, the predecessor of the Loongson Technical Service Center, was established.

On October 17, 2003, the Loongson 2 first film MZD110 was successfully taped out.

On September 22, 2002, the Loongson No. 1 passed the appraisal organized by the Chinese Academy of Sciences. On September 28, the Loongson 1 conference was held. Lu Yongxiang, vice chairman of the Standing Committee of the National People's Congress, and Zhou Guangzhao, vice chairman of the National Committee of the Chinese People's Political Consultative Conference, attended the Loongson 1 conference.

On August 10, 2002, the first Loongson 1 chip X1A50 was successfully taped out.

On August 19, 2001, the Loongson 1 design and verification system successfully launched the Linux operating system, and passed the appraisal organized by the Chinese Academy of Sciences on October 10.

In May 2001, with the support of the Knowledge Innovation Project of the Institute of Computing Technology of the Chinese Academy of Sciences, the Loongson Research Group was formally established.

In 2013, the first built-in Godson processor notebook was officially launched

The sales status of the Godson 3a notebook on the official website of Zhongke Menglan has been hanging for more than a year, "after it will be launched soon." , And finally changed to "On Sale" today. Yilong 8133Built-in notebook with independent intellectual property rights in my countryLoongson 3A/2GQ quad-core high-performance general-purpose processor, clocked at 900MHz . Equipped with a 13.3 display with a resolution of 1366x768; 1GB independent video memory; using AMD RS780E+SB710; 2.5” SATA HDD 160/250/320/500 GB; operating system: Hongqi/Won the bid of Kirin/Zhongke Fangde/Co-Creation/Debian Linux.

Specific specifications are as follows: