After the media reported that ARM mini China will be in the IPO in Mainland China, there is a public opinion on this matter and Berkeley research team developed RlSC-V, and attracted IBM, NXP, Western Digital, Nvidia, Qualcomm, Samsung, Google, Huawei. More than 100 technology companies joined the RISC-V camp. And that the United States to promote RlSC-V is to defeat the ARM, and then achieve control of the global CPU conspiracy.
In fact, RlSC-V is an academic open-source CPU. More than 100 technology companies worldwide have joined the RlSC-V camp. More are based on commercial interest considerations. They are completely incompatible with "conspiracy theory" and "big chess party." relationship. RlSC-V's biggest inspiration to China is that it is not that difficult to establish a technology system that is independent of Wintel and AA.
What is RISC-V
RISC-V reads RISC Five, which means a fifth-generation reduced instruction processor. The name was taken only because Professor David Patterson of the Berkeley research team in the United States had previously developed four generations of reduced instruction processor chips.
RISC-V is not a product of the will of the nation. It is just a product of a research project at the University of California, Berkeley. In 2010, Berkeley's research team wanted to design a CPU. However, Intel's X86 authorization card was very dead, ARM's instruction set was very expensive, and the ARM 32's authorization card was also very strict, as if only Apple, Qualcomm Four other companies were authorized. Companies such as domestic Huawei and Spreadtrum have only obtained ARM 64 authorization.
Since MIPS was not acquired by Imagination at the time in 2010, SPARC has not yet been abandoned by Oracle, and IBM has not yet implemented Open Power. In this way, Berkeley's research team's choices were limited to DEC's Alhpa, which had disappeared, HP's PA-RISC, which it had given up, and Itanium, which Intel couldn't move on... In this case, Berkeley's research. The team was very aggressive and decided to design a completely new set of instructions from scratch.
In many media reports, the definition of a set of instructions was described as black technology, but in fact, achieving a high-performance CPU and building a software ecosystem around instruction sets is really challenging work. Defining a set of instructions The difficulty is not great, Berkeley's research team completed the RISC-V instruction set development in just 3 months.
RISC-V instruction set
Because the Berkeley research team was short of money, it decided to open RISC-V to Linux as a CPU in the open source. After receiving support from various parties, it also developed a number of products.
Currently, Berkeley's research team has completed a 64-bit processor core (codenamed Rocket) based on the RISC-V instruction set, which is based on the 45nm and 28nm processes. The Rocket chip has a frequency of 1 GHz. Compared with the ARM Cortex-A5, the measured performance is 10% higher, the area efficiency is 49% higher, and the unit frequency dynamic power consumption is only 43% of the Cortex-A5. In the embedded field, Rocket can compete with ARM for the market.
Hundreds of technology companies join RlSC-V camp and conspiracy theory has nothing to do
After media reports that ARM mini China will be in the Chinese mainland IPO, there is a public opinion linking this matter with RlSC-V. It is believed that the promotion of RlSC-V by the United States is to defeat ARM, and then realize the conspiracy to control the global CPU. The ARM mini China's IPO in China is a countermeasure against China.
However, it is entirely the media that does not understand the unconventional association of technology. ARM mini China will be the IPO in mainland China, but Japan Softbank will allow mainland Chinese investors to become second-in-commanders, and has nothing to do with "the next big game." In contrast, Chinese-funded fund-funded acquisition of Imagination, and the original Ziguang Group Dr. Li Liyou as CEO, is more like "in the next game."
Join the RlSC-V camp of companies and academic institutions
In addition, hundreds of companies around the world have joined the RlSC-V camp, and the media reports that the United States wants to defeat the ARM, and thus realize the monopoly of technology, are completely unresolved. Even the media’s arguments are problematic. Here is a brief clarification:
The United States has no need to defeat the ARM. After all, ARM's major R&D centers are all in the United States. Originally designed by Americans, the core technology is in the hands of Americans. If necessary, the FBI and CIA can visit the ARM R&D center to access the core secrets at any time. Even if ARM is currently acquired by Japan's Softbank, taking into account the tens of thousands of American soldiers stationed in Japan and Japan has been bowing to the United States, ARM cannot be controlled from the United States.
The United States wants to beat the ARM is not so much trouble, do not need to engage in a RISC-V. As long as the US government imposes various restrictions on ARM, it can easily kill ARM. For example, like limiting China’s own CPU, it is required that Foundry such as TSMC, UMC, Glofangd, Samsung, and SMIC ban ARM streaming. Qualcomm, Apple, Huawei, and other ARM camp IC design companies will fall into shock like ZTE. In addition to using policy sticks, commercial pull-ups are also an option. The US government can only support X86 as much as it can. Even if you do not support the X86, MIPS, Aphla, SPARC, Itanium, PA-RISC can easily find one, why should they go to do RISC-V.
Join the RISC-V camp more because of business factors
Hundreds of technology companies worldwide have joined the RISC-V camp, more often because of business reasons. Although in many reports, the success of ARM is attributed to openness, in reality, ARM is only open in the business model, and it is technically dead.
Until now, ARM32-licensed companies have been able to count on one hand. Although there are more ARM64 licenses, the licensing fees are extremely expensive. The French startup Greenwave said that if they use the ARM architecture, they would have to spend 15 million US dollars to authorize fee. And after the authorization expires, whether to continue the authorization and authorization fees must be renegotiated.
Although for giant companies such as Qualcomm, Apple, and Huawei, the licensing fee of hundreds of millions of yuan is nothing, but for start-ups, this is unacceptable.
In this situation, startups will certainly favor the free RISC-V. Technology giants such as IBM, NXP, Western Digital, Nvidia, Qualcomm, Samsung, Google, and Huawei all chose to join RISC-V based on considerations of not putting eggs in a basket and dissatisfaction with ARM.
However, this does not mean that RISC-V will have a promising future, because most of these tech giants are still waiting and watching. They are the owners who do not see rabbits and do not scatter eagles. Moreover, RISC-V is completely open source, and allows commercial companies to add instructions without authorization, which easily leads to RISC-V fragmentation.
In this way, it will be difficult to form a unified ecology. In the future, I am afraid that RISC-V processors developed by Huawei, Qualcomm, and Google may all belong to RISC-V, but they cannot run the same set of software dilemmas. Just as full openness and powerful leadership are a contradiction, if it is not possible to solve this problem, I am afraid that RISC-V will hardly grow to compete with X86 and ARM.
It is not so difficult to build a technology system that is independent of Wintel and AA.
The biggest inspiration for RISC-V to China is to start a new life and create a technology system that is independent of Wintel and AA is not that difficult.
In the past, domestic commercial companies, and even some institutional units, believed that “designing a completely new instruction set from scratch is a prohibitive workâ€, but the fact that RISC-V is small from a summer of 3 months The project began to grow.
The popularity of RISC-V also reflects a phenomenon, that is, foreign countries often have a new technology, they will be buoyed, and swarms of people go to work for foreigners. In addition, in view of the black history of “an open source in foreign countries and domestic autonomy†in the past decades, it is feared that in the future, the CPUs designed by foreigners will be packaged as “self-controllable CPUsâ€.
In fact, as far as open source and freeware are concerned, the domestic market is not without. Godson's GS232 and GS132 are already open source, and the foreign IP licensing is free. In terms of ecology, because the application area is embedded, the ecological requirements are not high. What's more, there are still three catties of iron in the rotten ship. In the present, the ecology of MIPS is better than the RISC-V that has just begun to take off.
Whether the technology is good or not, whether it is practical or not, is not to look closely with the Americans, but whether it is closely related to the application. This kind of swarming of foreign technology is extremely abnormal, behind both the lack of independent technical propaganda efforts, there are blindfolded factors.
List of program committees of the 7th RISC-V seminar
Researcher Bao Yungang of the Institute of Computing Technology of the 7th RISC-V Symposium has said that “Godson’s open source may be too little publicity, and it is rarely seen in the media if there was a (Loongson) open source soft core at the time. We do not necessarily choose RISC-V (for the project), but now we can switch between a set of instructions and a processor, and the cost of human input is somewhat higher."
All in all, the biggest inspiration to China from RISC-V is that it is not that difficult to establish an ecosystem based on a new instruction set. Some people are always deterring themselves from building a technology system that is independent of Wintel and AA, and joke about Shen Weihe. Godson is not self-sufficient in Don Quixote. It is just making excuses for his incompetence and incompetence.
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