XiangShan VS peakperf

Link to the open-source processor implementation: https://github.com/OpenXiangShan/XiangShan/tree/nanhu

You can download and simulate it on regular hardware.

I ran a few micro benchmarks it XiangShanV2 (Nanhu), the one in the laptop, and XiangShanV3 the next generation of their implementation:

    integer micro benchmark from the XiangShan repo:

Are you calling for the government to pick a winner? The Chinese word for this fierce if at times chaotic competition is "juan". It worked for them in EV and PV. The outcome remains to be seen in chips and commercial space launches. But even their mostly (ex-)students-run open source Xiangshan RiscV project https://github.com/OpenXiangShan/XiangShan shows a remarkable level of sophistication.

> Certainly no RISC-V implementations that are in the hands of customers right now do any fusion and it doesn't seem to hurt their ability to match or exceed the performance of similar Arm cores (A55, A72).

You can play around with OpenXianShan though, they have a few fusion targets: https://github.com/OpenXiangShan/XiangShan/blob/master/src/m...

Most of the targets require the same destination, so it won't be able to fuse current codegen. I suppose there is still some time before compilers need to be ready, but it's not that much.

> Perhaps they will provide compiler patches if required.

I hope so, btw t-head seems to be still be trying to upstream XTheadVector: https://gcc.gnu.org/pipermail/gcc-patches/2024-January/64278...

This is the most advanced open source risc-v implementation I'm awair of: https://github.com/OpenXiangShan/XiangShan

Maybe implement a big feature for a open source design? like vroom or xiangshan.

I did know about XiangShan, but not Aolai. Is it a Linux distribution?

If you are interested in high performance look into vroom , c910 and xianghan, maybe you could adopt one of them.

Dr-Noob here. Created an account just to comment on this post. I appreciate all of your comments.

For the ones who think that cpufetch uses lscpu (especially the one who wrote the title of this post), please see https://www.reddit.com/r/linux/comments/milnza/cpufetch_simp...

About the peak performance, nezirus, the purpose is to have a quick look of how powerful a CPU is supposed to be. Peak performance does not measure the real performance of a CPU but it is a rough estimate of it. The peak performance is one of the distinguishing marks of cpufetch and is one of my favorite fields of cpufetch. Concerning the fight between Gold 6238 and EPYC 7702P, is not the other way around. If you are able to use the full power of the CPU, Gold is much more powerful. However, in a real program, this is not always true. For more information about the peak performance, see https://github.com/Dr-Noob/peakperf. There you will understand how peak performance is calculated and how it works.

Thank you very much for your "text screenshots", I really like to see my program on all this variety of hardware!

If you are interested, you can find more information in another project of mine, peakperf (https://github.com/Dr-Noob/peakperf).