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XiangShan open-source 64-bit RISC-V processor to rival Arm Cortex-A76

358 点作者 watchdogtimer将近 4 年前

7 条评论

PragmaticPulp将近 4 年前
Very cool to see a team of 25 students put this together and get prototypes made. I wish opportunities like these were available back in my college days.<p>The headline is getting slightly ahead of the actual performance. Reaching Cortex-A76 performance is their goal after many more iterations. Their current implementation is not there yet, but that shouldn&#x27;t detract from the magnitude of their achievement and their contribution to the open-source world:<p>&gt; This culminated with an 8-core prototype built based on Yanqihu (雁栖湖) architecture using TSMC’s 28nm process with the processor running up to 1.2 or 1.3 GHz that should be taped out this month. But plans have been made to tape out a new prototype based on Nanhu (南湖) by the end of the year, using SMIC’s 14nm process allowing up to 2 GHz frequency, and further iterations of the architecture will aim at rivaling Arm’s Cortex-A76 processor.<p>RISC-V is an exciting development in the SoC world. We&#x27;re starting to see some of HiFive&#x27;s boards trickle out into the wild. The performance is good, but it&#x27;s not quite as groundbreaking as many of the headlines make it out to be. The most exciting part of all of this is that ARM has more competition and we get to see some open-source contributions like this.
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tyingq将近 4 年前
MicroMagic is pretty interesting to me in the RISC-V space: <a href="https:&#x2F;&#x2F;arstechnica.com&#x2F;gadgets&#x2F;2020&#x2F;12&#x2F;new-risc-v-cpu-claims-recordbreaking-performance-per-watt&#x2F;" rel="nofollow">https:&#x2F;&#x2F;arstechnica.com&#x2F;gadgets&#x2F;2020&#x2F;12&#x2F;new-risc-v-cpu-claim...</a><p>They are getting perf-per-watt numbers that are ahead of everyone...albeit with a single core and no real 3rd party verification.<p>Some of the group had worked on Sparc at Sun, and they had previously sold themselves to Juniper for $260M, then regrouped some time afterwards.
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eunos将近 4 年前
I don&#x27;t know whether it is possible with chip development or not. But I really hope that this project will enable numerous amount of derivative chips just as Linux kernel allows multiple distro. That means IoT&#x2F;GPU&#x2F;CPU&#x2F;etc chips need not to start from scratch. In addition, having similar foundations might help fabs manufacture those chips swiftly.
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throwaway4good将近 4 年前
Impressive work by an university group.<p>Perhaps also a testament to what you get in terms of productivity, if you use a more modern platform &#x2F; language (Chisel&#x2F;Scala).
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goodpoint将近 4 年前
&quot;&quot;&quot;The RISC-V core has been developed with Chisel language ... released under a Mulan PSL v2 license&quot;&quot;&quot;
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jhvkjhk将近 4 年前
For those who don&#x27;t know, Xiang Shan is a famous hill in Beijing, best known for red leaves in autumn.
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jbluepolarbear将近 4 年前
This is really cool. I hope this leads to more innovation in the open source phones, computers, and game hardware.