twtw

25 ms·

211.
by twtw 8y ago
Only in the sense that the jury is still out on wifi and 4G - which is sorta true, but most people aren't that concerned about it.
212.
by twtw 8y ago
Can't tell if you're serious, so I'll ask on the off chance you are. What does "evil" mean? Or are you just saying that the entire tech industry is evil?
213.
by twtw 8y ago
Thanks for the recommendation. The book I referenced discusses both the early hydrodynamic model maxwell used for electrostatics and a rather bizarre (and intriguing) mechanical model involving flywheels and gears. Can't comment on whe
214.
by twtw 8y ago
If people are interested in the historical developments of EM theory and the various physical analogies maxwell used, I'd highly recommend "Faraday, Maxwell, and the Electromagnetic Field" by Forbes and Mahon. It has a intere
215.
by twtw 8y ago
Yeah, it's impressive because it's differentiating the language - it doesn't require putting 'tf.' in front of everything and hoping tf has the function you want.
216.
by twtw 8y ago
There's a reason I said "that directory" not "that file." Cutting through the sarcasm, here's some Volta info: https://download.nvidia.com/open-gpu-doc/Display-Ref-Manuals... As reported o
217.
by twtw 8y ago
1)link is broken http://download.nvidia.com/open-gpu-doc/DCB/1/DCB-4.0-Specif... > nvidia has done practically nothing since then to support nouveau in any meaningful way There's an awful lot of stuff
218.
by twtw 8y ago
> never ... help nouveau https://lwn.net/Articles/568038/
219.
by twtw 8y ago
What's your point here? Ruby (2-clause BSD): > Copyright (C) 2007-2008 Yukihiro Matsumoto Keras (MIT licensed): > COPYRIGHT > All contributions by François Chollet: > Copyright (c) 2015 - 2018, François Chollet. > All
220.
by twtw 8y ago
Re: business point of view See the other link currently on the front page: https://blogs.nvidia.com/blog/2018/12/03/physx-high-fidelity... . Gives some ideas of the rationale.
221.
by twtw 8y ago
Why not just leave it at ~55 characters? 50 characters is not a hard limit. See the Linux commits, for example: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/lin...
222.
by twtw 8y ago
Calm down. If you want lower performance in return for better reliability and security, just turn on the mitigations and/or increase the refresh rate.
223.
by twtw 8y ago
Do you have any pointers to resources regarding the formal model for web assembly?
224.
by twtw 8y ago
It is definitely worth trying as an experiment, but the discussion around wasmjit doesn't seem like it's a research project. Its worth noting that this has in many senses already been extensively research. This was a significant p
225.
by twtw 8y ago
I see a future where the npm-style ecosystem develops with the JIT running inside the kernel, so you end up running a "trusted" application ends up running a whole lot of untrusted code via dependencies. Usually process isolation
226.
by twtw 8y ago
Right, but that effect is pretty much unrelated to the characteristic impedance of free space and doesn't mean that vacuum is not an insulator.
227.
by twtw 8y ago
I've asked this before, but I'm going to ask it again (sorry for the repetition). What makes this sandbox different from previous sandboxes (JVM, browsers, etc) that makes proponents sufficiently confident to put it in the kernel?
228.
by twtw 8y ago
That paper describes two very different attacks from the 2014 paper. The old news was being able to get memory with stale data from previous processes.
229.
by twtw 8y ago
Right. I see now that I was unclear in that second part - I should have written something like "just because EM waves can propagate in vacuum does not mean you can induce a current density in vacuum." Of course EM waves can induce
230.
by twtw 8y ago
> If you want to blame something, blame the C language. Compiler developers are just doing their jobs. Compiler developers are doing a fantastic job, and I absolutely do blame the C language and standard. For the cases referenced in the
231.
by twtw 8y ago
> I think this is the overhead for mitigating by adding additional code I think so too - as OP just said "dealing with," it wasn't clear to me that you were talking about just ignoring rather than handling.
232.
by twtw 8y ago
Yeah, I've interacted with a lot of people that didn't appreciate the problems of ridiculously high (2+ GHz) instaneous bandwidth. It sounds great and is easy to sell, but the fact that a single high power signal can wreck everyth
233.
by twtw 8y ago
By itself, that isn't particularly impressive - all that requires is a decent LO + mixer. Make sure you aren't confusing frequency range with instantaneous bandwidth.
234.
by twtw 8y ago
I'm pretty sure this is old news - like fixed several years ago news. Can we get a (2014) in the title? (Basing year on citations + url of same paper at https://www.ieee-security.org/TC/SP2014/papers/Stea
235.
by twtw 8y ago
True, but not really an answer to the question. Unlike semiconductor devices, there is only one "kind" of vacuum tube. A push-pull amplifier with vacuum tubes requires an anti phase generator before the high and low side drivers,
236.
by twtw 8y ago
It is essential to distinguish between characteristic impedances (of free space or other) and resistances. Although both are real values measured in ohms, characteristic impedances are non-dissipative. Just because EM waves can propagate in
237.
by twtw 8y ago
Any specific examples? I know Linux, at least, uses these flags to compile, and Linus scorns these parts of the standard.
238.
by twtw 8y ago
Why not just define these things? Make -fwrapv, -fno-strict-aliasing the standard?
239.
by twtw 8y ago
> But I'd interested in seeing firm numbers on this. From Regehr's blog post that you linked: > An issue with mitigating integer UBs is the overhead. For example, they cause SPEC CPU 2006 to run about 30% slower.
240.
by twtw 8y ago
Erm... > Like Leslie Lamport says Pretty clear appeal to authority, IMO.

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