s1dev

8 ms·

31.
by s1dev 6y ago
The A72 has speculative execution so I don’t think that’s strictly speaking true
32.
by s1dev 6y ago
Quantum computers don’t have such a compelling case for optimization. Classical optimization algorithms are really good. Usually if you look hard enough you can find a sqrt(n) speed up but I don’t think these are the applications that wil
33.
by s1dev 6y ago
Mainly quantum simulation. The (most industrially relevant) dream is that you can do direct simulation of large, complicated molecules to better understand them. This is a place where the best understanding is that quantum computing is an e
34.
by s1dev 6y ago
How do you propose to power a fleet of spacecraft at 550AU? Would you be able to acquire enough RTGs? What about DSN time for the downlink?
35.
by s1dev 6y ago
For the moment the “killer apps” involve simulating quantum systems: Chemistry (catalysts etc), microbiology (protein folding), nuclear / particle physics
36.
by s1dev 6y ago
The problem with the 100LL phase-out is that you have over 70 years of engines and fuel systems designed to work with leaded fuel. In order to complete the phase-out you either need to: force people to put a new $30K+ engine into a <$50K
37.
by s1dev 6y ago
Here are a few ways to kill you and all your passengers under instrument flight rules. Most of these involve a single mistake and a "controlled flight into terrain" - Turn too early/late past an arbitrary point in space - Tur
38.
by s1dev 6y ago
A good example of a recent technical failure where one likely alternative is "everyone dies" https://en.wikipedia.org/wiki/British_Airways_Flight_38 The engine needs to be able to run without electrical power
39.
by s1dev 6y ago
CPUs you can implement on FPGAs or something else whereas FPGAs are really only useful if you can get it made. Getting the design rules from a foundry usually involves an NDA and you will need (proprietary) EDA tools. Also the utility of op
40.
by s1dev 6y ago
$100K is a lot of money for some experimental low temperature labs. The other issue is that vibrations from compressor units can interfere with sensitive experiments like scanning tunneling microscopy. Helium is expensive enough as it is th
41.
by s1dev 7y ago
You can't get thousands of variables with all to all connectivity on a quantum annealer. The noise will kill it. I.e. you will never have such a device with reasonable coupler precision. The techniques for decomposing a problem and sol
42.
by s1dev 7y ago
It remains to be demonstrated that D-Wave has an asymptotic advantage over classical optimization algorithms. Even synthetic spin glass benchmarks specifically designed to give the DW an advantage show no advantage. Furthermore, real optimi
43.
by s1dev 7y ago
For what it’s worth, Burbank actually has a really short runway.
44.
by s1dev 7y ago
Journals often charge extra publication fees per figure. Any supplementary material also needs to be available decades from now
45.
by s1dev 7y ago
The real paper is https://arxiv.org/pdf/1810.05338.pdf 1810.05337 is a summary of results for PRL Both are very good