sanxiyn

23 ms·

331.
by sanxiyn 3y ago
Note that Google planned to use SiFive X280 for TPU, although I don't know the current status. https://www.semianalysis.com/p/sifive-powers-google-tpu-nasa...
332.
by sanxiyn 3y ago
Conclusion: it is reasonable to project that the goal of 2%-3% overhead for deterministic spatial and referential memory safety is achievable.
333.
by sanxiyn 3y ago
Yes it is.
334.
by sanxiyn 3y ago
VMware virtualized x86 without hardware support, so it probably can be done. That doesn't mean it would be easy or it would be as performant as with hardware support.
335.
by sanxiyn 3y ago
2001 Boeing paper, Out-Sourced Profits: The Cornerstone of Successful Subcontracting, is a required reading. This article gives a good introduction. https://berthub.eu/articles/posts/how-tech-loses-out/
336.
Predicting Transition Temperature of Superconductors with Graph Neural Networks(arxiv.org)
1 points by sanxiyn 3y ago|0 comments
337.
by sanxiyn 3y ago
Have a look at Predicting Transition Temperature of Superconductors with Graph Neural Networks posted in August. https://arxiv.org/abs/2308.11160
338.
by sanxiyn 3y ago
Since diamonds are made of just carbon, they are cheaply produced using chemical vapor deposition. https://fortune.com/2023/09/03/diamond-demand-falling-lab-gr...
339.
by sanxiyn 3y ago
It is pseudonymous, although the handle iris_IGB suggests she works at IGB, Institute of Gene Biology, Russian Academy of Sciences. https://genebiology.ru/
340.
by sanxiyn 3y ago
More than that, she calculated how high it will float, and how height will depend on temperature, before starting the experiment, and confirmed all her predictions.
341.
by sanxiyn 3y ago
World first replication was done by Iris Alexandra using her own accelerated process and there is no way Varda Space could have beaten her.
342.
by sanxiyn 3y ago
On the other hand, his piece is much smaller than two pieces we saw from South Korea.
343.
by sanxiyn 3y ago
It is not a purity issue. On the other hand, 1D superconductors are expected to behave this way. See my other comments.
344.
by sanxiyn 3y ago
洗芝溪 answered this on Zhihu. All his answers are extremely good. This user knows something. 这应该还是材料的各向异性, 也就是它的准一维结构导致. 因为材料当中有一个固定晶相, 那个方向的抗磁性最强, 所以磁感线总会沿着这个方向走, 导致所有样品都是竖起来的. This should be due to the anisotropy of the material, that is, i
345.
by sanxiyn 3y ago
That's entirely a sociological(!) question and hard to answer. I think it deserves a Nobel, but I am less confident whether it will actually win a Nobel.
346.
by sanxiyn 3y ago
Yes, but computer chips are powered by DC.
347.
by sanxiyn 3y ago
As far as I can tell lifthrasiir is correct here: https://news.ycombinator.com/item?id=36953052
348.
by sanxiyn 3y ago
What's up with "Error! Bookmark not defined"? Is this some kind of trolling? I guess its presence in the first version is understandable if it was posted in hurry, but why leave it in the revised version?
349.
by sanxiyn 3y ago
Sure, I said cooler chips, not chips with no heat.
350.
by sanxiyn 3y ago
It is the copper.
351.
by sanxiyn 3y ago
MRI is a potential application of room temperature superconductor in general, but not specifically for LK-99. One disadvantage of LK-99 is that it has very low critical current, see patent figure 10. On the other hand, 300 mA is more than e
352.
by sanxiyn 3y ago
Sure, replacing copper wires help too, but the real deal is to replace copper interconnects inside the chips. It looks like the company is going for replacing copper interconnects in chips.
353.
by sanxiyn 3y ago
Since there will be impurity anyway, there is no difference whatsoever in practice between zero and very very low resistance. Quantum Energy Research Centre in fact describes its resistance to be "lower than 1/10^4 of copper"
354.
by sanxiyn 3y ago
Cooler chips. Chips heat due to resistance, and superconductors have zero resistance (by definition). I suspect this is the company's intended application. The following quote from their patent is very suggestive if you know about semi
355.
Visit to the LK-99 basement lab (Chinese video with English subtitle)(old.reddit.com)
3 points by sanxiyn 3y ago|0 comments
356.
by sanxiyn 3y ago
I wrote a comprehensive thread on the current situation here. It is somewhat long and hard to summarize, sorry. https://twitter.com/sanxiyn/status/1685094029116297216
357.
by sanxiyn 3y ago
They are willing and eager to ship samples. (Search for my other comments.)
358.
by sanxiyn 3y ago
Condensed Matter Theory Center (a Twitter account affiliated with University of Maryland) says they will send samples. https://twitter.com/condensed_the/status/1684960318718406656
359.
by sanxiyn 3y ago
As far as I can tell, https://arxiv.org/abs/2307.12008 is the paper by the original group and https://arxiv.org/abs/2307.12037 is the paper they wrote with an outsider. Their chosen independent ou
360.
by sanxiyn 3y ago
They in fact could not get funding and the research is funded by investment money. They explicitly thank their investors at the end.

More ›