This trend may hit a wall in the near future as by some industry analysts predict TSMC's 3nm process will actually be more expensive per transistor than the current state-of-the-art 5nm process.

memory latency and bandwidth is critically important in ML algorithm performance in a way that makes this chart less straightforward than it appears; it's a good investigation with, in my view, an inconclusive result. achievable FLOPS on various models would be an interesting comparison.

In a narrow technical sense, this post still seems accurate but in a more general sense, it might have been slightly wrong / misleading. 

In the post, we investigated different measures of FP32 compute growth and found that many of them were slower than Moore's law would predict. This made me personally believe that compute might be growing slower than people thought and most of the progress comes from throwing more money at larger and larger training runs. While most progress comes from investment scaling, I now think the true effective compute growth is probably faster than Moore's law. 

The main reason is that FP32 is just not the right thing to look at in modern ML and we even knew this at the time of writing, i.e. it ignores tensor cores and lower precisions like TF16 or INT8. 

I'm a little worried that people who read this post but don't have any background in ML got the wrong takeaway from the post and we should have emphasized this difference even more at the time. We have written a follow-up post about this recently here: https://epochai.org/blog/trends-in-machine-learning-hardware
I feel like the new post does a better job at explaining where compute progress comes from.

I notice that the ML GPUs are not the best bang-for-your-buck in this chart. I assume that researchers prefer them because they pack more 'bang' (FLOPS/s) in one unit, and that distributing across multiple cards has a performance penalty and/or adds complexity. How do factors like the cost of the rig (motherboard, power supply, case) and the cost of electricity play into this? Would a large cluster of more commodity GPUs be an effective research setup which just isn't economically competitive with ML GPUs, or would it be impractical at research scale?

What is the benchmark year for the value reference of this US dollar?

You have more than an order of magnitude scatter in your plot, but you write 3 significant figures to your calculated doubling period. Is this precision of value?  

Also, your black data appears to have something different going on prior to 2008.  It would be worthwhile doing a separate fit to post 2008 data.  Eyeballing it, it is longer than 4 year doubling time.

Is there a publicly accessible version of the dataset?

How did you decide where the y-intercept for Huang’s law should be? It seems that even if you fix the slope to 25x per 5 years, the line could still be made to fit the data better by giving it a different y-intercept.