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XiangShan: an Open-source High-performance RISC-V Processor - Yungang Bao​

Dec 14, 2021


RISC-V International

XiangShan: an Open-source High-performance RISC-V Processor - Yungang Bao, Institute of Computing Technology, Chinese Academy of Sciences (ICT, CAS)

XiangShan, released jointly by Institute of Computing Technology, Chinese Academy of Sciences (ICT, CAS) and Peng Cheng Laboratory (PCL), is an open-source high-performance RISC-V processor started in June 2020. It's written in Chisel hardware construction language and supports RV64GC instruction set. During the development of XiangShan, they built many open-source agile tools to speed up the development, including differential testing, simulation snapshot, RISC-V checkpoints, etc. XiangShan has been taped-out for the first time in July 2021 and is expected to have its second generation taped-out at early 2022. XiangShan has been open-sourced at GitHub and contributions are welcome. In this talk, Dr. Bao will focus on the experience in chip agile development and introduce the development tools used in the XiangShan project

For more info about RISC-V, a free and open ISA enabling a new era of processor innovation through open standard collaboration, see: https://riscv.org/


Chinese Academy of Sciences open source RISC-V processor "Xiangshan" tape-out, has successfully run Linux
 
Chinese suppliers of noble gases, key for chipmaking, ramp up production to meet surging demands
By Yin Yeping
Published: Feb 28, 2022 07:33 PM

Chinese suppliers of noble gases such as krypton, xenon and neon, key materials for chipmaking, are churning out products to handle surging orders amid rising concerns for what could be an unprecedented supply disruption after the reported cut-off of trade activities in southern ports in Ukraine, an important global exporter of noble gases.

While the Russia-Ukraine conflict escalates, being exacerbated by the sweeping sanctions imposed on Russia from the US-led West, industry insiders said that the disruptions will push semiconductor-related industries to lean toward countries like China to fend off risks.

Several Chinese noble gas producers told the Global Times on Monday that their daily order inquiries from both home and abroad had jumped five to six times now, as a result of the military conflict in Ukraine.

A large domestic noble gas producer told the Global Times on condition of anonymity on Monday that it had received tens of new order inquiries on a daily basis, where it used to be just three to five, mostly from semiconductor producers from home and abroad.

The person said that there is rising market speculation over noble gases in the chip industry amid the fast-changing situation in Ukraine. The company produces krypton, xenon and neon gas for international clients.

Despite the extra demand, it has reached its production ceiling and capacity expansion takes time, the person said.

Ukraine is a major exporter of noble gases, of which neon accounts for 70 percent of the global supply and krypton 30 percent, according to the China Industrial Gases Industry Association.

With the suspension of trade activities, including the service halt by some large shipping companies in Odessa, a major port in southern Ukraine, the market prices of noble gases have soared.

For example, the price of neon gas in China's domestic market has exceeded 1,650 yuan ($261.5) per cubic meter, an increase of 65 percent from the beginning of the year, and it has quadrupled from a low in October 2021.

Ma Yinchuan, head of the China Industrial Gases Industry Association, who is also the general manager of Beijing Shougang Gas Co, a large domestic gas producer, told the Global Times on Monday that there has been a conspicuous increase in inquiries this week from both old and new clients, who are asking about the prices and supplies of noble gas.

"There is one chipmaker that came to us today asking for an emergency purchase of tens of cubic meters of xenon, which is quite a lot to us, since our annual xenon production is 200-300 cubic meters," Ma said.

While the market demand for more noble gas is understandable, Ma said that there is no need to be overly worried about market shortage.

"Even though noble gases from Ukraine may be disrupted now, its impact on market supplies should be manageable, since most of the domestic companies would hold at least 3-6 months of inventories," Ma said.

AutoChips, a semiconductor-related company, based in Hefei, East China's Anhui Province, told the Global Times on Monday that they are in close communication with industry chain partners including TSMC over the potential impact from the changing situation in Europe.

At present, the company's business has not been affected, and it will not be affected in the short and medium term, according to AutoChips.

"The upstream of the chip foundry has a relatively long supply chain. Even if the upstream supply of some noble gases is in short supply, it will take a certain amount of time to transmit it to the downstream," a source with AutoChips said.

A recent media report said that international semiconductor-related companies including ASML are looking at diversified sources of neon gas in the face of the Russia-Ukraine conflict.

China always has a self-reliant supply of krypton, xenon and neon, but supply could be tightened as more global demand comes to China, Ma said.
 
中国电科​
5小时前​
来自 新版微博 weibo.com​
【材料研制新突破!】​
近日,中国电科 材料成功研制出8英寸碳化硅晶体,实现了8英寸N型碳化硅抛光片小批量生产,进一步缩小国内外技术差距,为我国碳化硅事业的自主保障能力、​
自主创新发展夯基固本。​

CETC
22-3-3 10:58
From weibo.com

【New breakthrough in material development! 】

Recently, CETC Materials has successfully developed 8-inch silicon carbide crystals and realized the small batch production of 8-inch N-type silicon carbide polished substrates, further narrowing the technological gap at home and abroad, and providing independent guarantees for my country's silicon carbide business and laying a solid foundation for independent innovation and development.

1646294107484.png
 
来自 微博 weibo.com​
#长江存储# #苹果# 3月31日电,长江存储128层NAND据悉已通过苹果验证,2022年将急起直追成为第3家iPhone的Flash供应商。供应链消息指出,虽然长江存储受限于产能规模有限,初期供应比重仍低,估计从5月可望将开始铺货,或将加入iPhone 14系列供应行列。​
能输出产能就是好事
[666]

Scientific and technological strength
22-3-31 14:11
from Weibo

On March 31, YMTC's 128-layer NAND is reported to have passed Apple's verification, and it will be rush to become the third iPhone Flash supplier in 2022. Supply chain news pointed out that although Yangtze River Storage is limited by its limited production capacity, and the initial supply ratio is still low. It is estimated that it is expected to start distribution in May, or it may join the supply ranks of the iPhone 14 series.

It is a good thing to be able to output production capacity [666]

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Biren Technology, the BR100 series is the most powerful general-purpose GPU chip in China. It is developed based on Biren Technology's original chip architecture, using mature 7 nanometer process, combined with Chiplet (core particle technology)
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An odd and stupid decision by the UK goverment how important this technology is becoming to our futures. Once again - a lack of strategic thought and planning by the UK goverment who is obsessed with selling off everything we own.
they didn't block it because it's running on 20 years old technology that China already has.
 
It is rumor to be fab by TSMC
Then it is unfortunately not independent of sanctions then. China is making rapid progress, but until it has a full supply chain for cutting edge chip tech, it won't be fully independent.
 
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