Continuous discussion about calculating the number of ALUs about archprobe

[PENGUINLIONG]

Well I would say the warp size shall be the number of physical ALUs. That's basically it. The number of warps is a side product of the register counting test. Please refer to Section 3.1 - The number of registers in our Romou paper for detail. It's already well illustrated. I think that's the most I could help. :)

[liu-mengyang]

Refer from the paper, I think the number of ALUs shall be how many threads can run parallel that calculating by multiplying the warp size and the number of parallel warps. Is this right?

My discussion is based on this theory I understood from your paper. But the current problem is that I cannot find the number of parallel warps, so that I cannot calculate the number of ALUs.

You said that the warp size shall be the number of physical ALUs, which I cannot understand and agree based on the knowledge of gpu programming and your paper.

I have understood that we can detect the number of ALUs by plotting the figure of relationship between latency and the number of registers per work item and I will try it. But how to reproduce the method of Section 3.1 - The number of ALUs and Figure 8 which I think is interesting?

Can I have your Wechat number?

[PENGUINLIONG]

I think you obscured the idea of physical threads and logical threads. They are all threads but the ALU count equals the number of physical threads. If you mean the total number of ALUs on chip, that's ALU count multiplies the number of SMs (GPU cores).

I prefer to keep this conversation open here in case anyone run into similar issue and they can have something to refer to. But sure, if you want to, it's the same as as my Github ID.

[liu-mengyang]

I agree. But please forgive me that my reply may not be quick and keep this issue open for a while. I will learn more and try more to detect the number of ALUs. Thanks for your reply. And this is an amazing work I would like to say it again, which help my research a lot.

[PENGUINLIONG]

Thanks for that. I'll keep this conversation for a while then. If you have questions other than the ALU count please feel free to open another issue so it could be tracked in a cleaner. :)

[PENGUINLIONG]

Closing for inactivity.