Chinese CPU designer Loongson wants to raise $ 544 million in IPO

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Chinese CPU design firm Loongson wants to raise $ 544 million in an IPO as part of a bid to drive funding and the development of next-generation products. Loongson is a company that we have talked about several times over the last few years. The CPU uses an instruction set based on MIPS64 and is steadily releasing more powerful CPUs.

Earlier this year, Loongson announced a new instruction set architecture, LoongISA 2.0.According to the post (It’s described as a Q & A website, a bit like Medium), Loongson has been steadily building up to this moment for the past decade. Starting with Loongson 2E / 2F, the company began to more commonly introduce its own custom and SIMD instructions for MMX. We apologize for the error because Google Translate made an obvious mistake when translating the original post.

Loongson continues to add new instructions to CPU design. Loongson 3A2000 was released in 2015, and Loongson 1.0 was officially released. At the time, Loongson officials reported that 1,014 LoongSIMD instructions were added to the CPU, in addition to 148 general-purpose extension instructions and 213 instructions aimed at improving execution. ARM and x86 native binaries.


Loongson 3 A2000.Image via CNX-Software

LoongISA 2.0 was announced earlier this year and reportedly implemented nearly 2,000 instructions in total. This sounds like a daunting task, but I wanted to see how x86 is compared.

This is Somewhat interesting facts As a result, I learned the following. Since x86 supports variable length instructions up to 15 bytes, how many x86 instructions are possible from 981? Is the range of. Depending on what you count as instructions.

Loongson hasn’t released much details about the processor and hasn’t released an instruction manual, but adding 213 instructions can significantly improve the performance of x86 and ARM binary translations. Claims to have been. 5% penalty.

After reading this article, I have a clear impression that Loongson is interfering with itself by refusing to release any kind of data on the processor. Optimizing the chip is clearly very difficult, as virtually nothing is known about the chip’s internal structure or best practices.

This is another post.This is Loongson Relatively weak Incorporation into the market. Again, we apologize for any errors in Google Translate.

For a long time, the research and development and manufacturing of general-purpose CPUs has been in the hands of foreign IT giants Intel and AMD … Since its establishment, Loongson has been on a mission to research and develop domestic CPUs. The Chinese people have always had great expectations for them. They hope that in the near future, the country will be able to use its own manufactured and developed CPUs, and that core technology will be out of control of others … [A]Years later, Godson still exists only in newspapers and media reports, and is not yet in the homes of the general public … Netizens question Godson’s voice everywhere.

The authors believe that Loongson’s low market penetration is due to lack of domestic software support, as opposed to the underlying weaknesses of the processor. According to him, many popular (Chinese) domestic software makers continue to prioritize Windows over Linux.

It’s interesting that Loongson continues to add instructions as a way to improve performance. The upcoming 3A5000 is expected to be the company’s last MIPS64 core before shifting its focus to building RISC-V CPUs. Intel and AMD currently account for 99.5% of China’s CPU market, but the Chinese government has long supported Loongson’s efforts as part of its efforts to make China independent of foreign chip manufacturing. .. Asia Nikkei “Some of the computers used by Chinese customs to handle sensitive tasks are already equipped with domestic CPUs and operating systems,” a customs officer in Guangdong Province in southern China told Caixin. .. Their performance is not good, officials said.

This is probably not surprising given that Loongson’s current efforts are built at 28nm and clocked around 2GHz. Still, the company’s design has evolved rapidly over the last six years. Given the interest of ISA, this is a great opportunity to switch to RISC-V. The $ 500 million IPO may not be as high as Intel or AMD, but it’s not exactly the same. In particular, I’m curious about where the company is heading, as it’s not currently subject to US trade restrictions like other Chinese tech companies. Loongson CPUs may not pose a short-term performance risk to your Intel or AMD business, but it’s always interesting to see the details of what other CPU design companies are bringing to the table. Forcing you to work with limited resources can facilitate research breakthroughs.

Feature images by Windows 1089, CC BY-SA 3.0

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