That Chip Has Sailed: Critique of Unfounded Skepticism Around AI for Chip Design
arxiv.org
arxiv.org
> However, this “whistleblower” admitted to a Google investigator that he had no reason to believe fraud occurred: “he stated that he suspected that the research being conducted by Goldie and Mirhoseini was fraudulent, but also stated that he did not have evidence to support his suspicion of fraud
Er... obviously he didn't catch them on the act, literally manufacturing the data. In any case like this, before discovery, the most damning evidence you could possibly have is that you cannot reproduce the results, and in no court of law this would considered evidence of fraud. Evidence of fraud needs to show knowledge and intent.
To point this as if the whistleblower had actually recanted his accusation is misleading and clearly in bad faith. Google settled with the whistleblower (the case was for wrongful dismissal, not "fraud"), so we will never know.
> the most damning evidence you could possibly have is that you cannot reproduce the results
Seems like the "whistleblower" didn't even have that. From the paper by the AlphaChip authors: "We provided the committee with one-line scripts that generated significantly better RL results than those reported in Markov et al., outperforming their “stronger” simulated annealing baseline. We still do not know how Markov and his collaborators produced the numbers in their paper."
> [whistleblower] stated he did not have evidence to support his suspicion of fraud, that he needed to cross a much larger threshold to prove his suspicion
is exactly saying what I was saying.
But in addition, this is hearsay, "quoted" only by Google's rep. It was never actually mentioned by the whistleblower. It has exactly 0 value. Using this quote at face value is intentionally misleading no matter which way you put it. They're literally the defendants - they're basically quoting themselves.
> Seems like the "whistleblower" didn't even have that.
Before he was fired?
Also, I find it funny that for all the talk of the crisis of reproducibility, anyone would trust for a second the authors of the paper more than the attempts done by a 3rd party (and literally done by one of the most important names of the entire floorplanning academic community, to begin with). At least the EDA community has used some benchmarks that have been often used by other papers, allowing some resemblance of a comparison, and a criticism that "these ancient benchmarks do not reflect our holy ways or whatever" is a criticism that maybe I also share; but it's a hoop that everyone who has ever published any such paper (including all the big names) has had to pass in order to be published, unless apparently if you are called Google and publish in Nature.
Nature doesn't exactly have an stellar track record ensuring Google's results are verifiable ... https://retractionwatch.com/2024/05/14/nature-earns-ire-over...
Frankly, at this point I don't even know why would anyone bother with Google's paper. It feels as if they've managed to alienate the entire floorplanning academic community, and whenever I read one of Google's "responses" I see why.
They open-sourced AlphaFold-3 a week ago, so I'm not sure how you can say this is part of a pattern of being overly closed: https://www.nature.com/articles/d41586-024-03708-4
> Before he was fired?
I don't know how long someone should expect to remain employed when making baseless allegations of scientific misconduct against his colleagues instead of doing actual work. Again, he did not have evidence to support his suspicion of fraud, and he admitted this at the time.
I'm sorry that the "most important names of the entire floorplanning academic community" are struggling with ML basics, but it is what it is. The "Chip Has Sailed" paper makes this pretty clear. This pattern is unfortunately common when ML comes for a new field -- some researchers adapt and build, and others fail and complain (or worse, don't really even try).
> it's a hoop that everyone who has ever published any such paper (including all the big names) has had to pass in order to be published
If the hoop doesn't match what modern chip design needs, we shouldn't expect researchers to hop through it. No one is comparing Vision Transformers against AlexNet on MNIST. Meanwhile, AlphaChip is already used in production to make real layouts for real chips. TPU is a big deal!
I think the one thing we agree on is that this field desperately needs large public benchmarks that are representative of modern chip design.
> Nature doesn't exactly have an stellar track record ensuring Google's results are verifiable ... https://retractionwatch.com/2024/05/14/nature-earns-ire-over...
Google open-sourced AlphaFold-3 a week ago: https://www.nature.com/articles/d41586-024-03708-4
Google infrastructure is weird and takes significant work to disentangle from a given project, so I'm not surprised it took them six months to open-source it.
> Before he was fired?
I don't know how long someone should expect to remain employed when making baseless allegations of scientific misconduct against his colleagues instead of doing actual work. Again, he did not have evidence to support his suspicion of fraud, and he admitted this at the time.
> most important names of the entire floorplanning academic community
If the old guard struggles with ML basics, what can the AlphaChip authors be expected to do about this? This pattern is unfortunately common when ML comes for a new field -- some researchers adapt and build, and others fail and complain (or worse, don't really even try).
> it's a hoop that everyone who has ever published any such paper (including all the big names) has had to pass in order to be published
If the hoop doesn't match what modern chip design needs, we shouldn't expect researchers to hop through it. No one is comparing Vision Transformers against AlexNet on MNIST. Meanwhile, AlphaChip is already used in production to make real layouts for real chips.
No, this is ridiculous. Then don't publish, damn it. But they publish first, claiming that all the data is there, claiming that their papers satisfy all the rules required for reproduceability... and only actually release the source once they're caught lying . It is not the first time it happens.
This seriously damages Google's credibility and very well deservedly so.
> I don't know how long someone should expect to remain employed when making baseless allegations of scientific misconduct against his colleagues instead of doing actual work.
My question was whether this supposed data was available to the whistleblower before he was fired or not. It is kind of important (see my first point).
> Again, he did not have evidence to support his suspicion of fraud, and he admitted this at the time.
Why are you ignoring my counterargument? Where did he admit this exactly? The only source for this quote so far is hearsay from the defendant itself in a civil lawsuit, i.e. 0 value.
> If the old guard struggles with ML basics, what can the AlphaChip authors be expected to do about this? This pattern is unfortunately common when ML comes for a new field -- some researchers adapt and build, and others fail and complain (or worse, don't really even try).
This is as much of an ad-hominem, childish and stereotyping attack as it gets, holier-than-thou attitude, and, frankly, I resent the implications. Imagine if I said "If the morons at Google struggle with chip design basics, what can we do?". Does this encourage conversation?
There is no "old guard", EDA has been using AI quite effectively since before Google was even a thing, and likely _right now_ there are more experts in RL employed by EDA companies than there are AI experts at Google entirely.
> If the hoop doesn't match what modern chip design needs, we shouldn't expect researchers to hop through it.
The difference in "needs" is nowhere near great enough yet to be worth the effort of changing it, for reasons that should be evident by now.
If you read the court case, you can see quite clearly that he never obtained any evidence, and simply hoped to go on a general fishing expedition.
For him, it was like the AlphaChip authors performed a magic trick. Magic is impossible, and so something must be up. Even if he doesn't know how they did it, there must surely be fraud somewhere. Did it ever occur to him that he might just be wrong?
The closest thing he had to "evidence" of his belief was his study where he says he tried AlphaChip and got worse results than SA. But even that study was flawed, and known to be flawed at the time. From "That Chip Has Sailed":
"In 2022, it was reviewed by an independent committee at Google, which determined that “the claims and conclusions in the draft are not scientifically backed by the experiments” [33] and “as the [AlphaChip] results on their original datasets were independently reproduced, this brought the [Markov et al.] RL results into question” [33]. We provided the committee with one-line scripts that generated significantly better RL results than those reported in Markov et al., outperforming their “stronger” simulated annealing baseline. We still do not know how Markov and his collaborators produced the numbers in their paper."
([33] is the sworn statement from Jon Orwant, head of the independent resolution committee.)
How large do you imagine the conspiracy is here? The method is secretly bad, but the TPU team uses it in production anyway? MediaTek built on it anyway? The TF-Agents team claimed to reproduce it, but they're actually lying? Jeff Dean put his reputation behind it but he's either fooled or lying?
Please hold off on replying further on this thread until you have read OP's linked paper. I understand you want to defend your field against the encroachment of people you perceive to be bad actors, but I believe you have things backwards.
This continues the holier-than-thou attitude, but also violates this site's rules.
Not only I have read the entire court transcript, I was following it with interest as it happened. My point still stands. It is sleazy, to say the least, to misquote the whistleblower. It is even more sleazy to base such quote on "something the defendant claimed that the plaintiff claimed in a civil lawsuit".
This is point #1 on this "critique" and already rings all alarm bells, which is what my comment was about.
Google also did many, many evils during the entire trial (e.g. through the entire SLAPP thing) that no wonder they did not want to expose to the public. But that's another story.
> How large do you imagine the conspiracy is here?
Not large. Google continuously publishes papers where the results cannot be reproduced, at least by the time the paper is published, and barely gets a slap on the wrist from Nature, which is supposed to enforce these things.
> The method is secretly bad, but the TPU team uses it in production anyway? MediaTek built on it anyway? The TF-Agents team claimed to reproduce it, but they're actually lying?
Neither Tensor nor Mediatek are examples of really high-stages design; Tensor is not know for beating any records and Mediatek specializes in value.
While my area is frontend rather than backend, I have a passing familiarity with automatic macro placement (due to the fact that the barriers between flow steps keep getting thinner every day). Almost every other chip house of large-enough size has a macro placer. Almost every PhD student has implemented one. It's an easy problem, and with minimal knowledge about your design style you can likely do a better job than the generic ones from major vendors. However, it doesn't matter if you have the best macro placement engine in the world, your results would still not be ground-breaking overall. You can in fact ALSO do a terrible job and still get a pretty decent result since the flow will compensate. This was already my informed opinion even before the Nature article, but for Google's method, which _requires_ another placement tool to refine its work, would be even more true. And Google's method even requires a GPU farm for something that is, while important, still a relatively short step in the entire placement flow (and for not very push-through performance designs like Google's or MediaTek's , which are like the bread and butter of the world, the entire flow would not have required GPUs before). It's no wonder than the whistleblower thought the entire point of this Nature article was for Google to sell more Google Cloud GPU time. They may have convinced Mediatek, but not the academic community.
Synopsys disavowed Markov's paper: "Regarding the CACM article that Igor Markov's comments and writings do not represent Synopsys views or opinions in any way. Synopsys is also aligned with you on the potential of Reinforcement Learning AI for chip design" (https://x.com/JeffDean/status/1859431937640665474)
Jeff Dean's post on the overall situation: https://x.com/JeffDean/status/1858540085794451906