extropy

21 ms·

211.
by extropy 7y ago
How about a new opcode wait till memory address read equals? That would allow implementing a power efficient spinlock. Oh there is one already. Meet PAUSE: https://www.felixcloutier.com/x86/pause Edit: related post fro
212.
by extropy 7y ago
As far as I'm aware that's exactly how you would implement a spinlock. Random Google search seems to validate that. https://stackoverflow.com/questions/1383363/is-my-spin-lock-...
213.
by extropy 7y ago
IMO that's an indication that this was made for a specific piece of software and trying to limit the collateral damage.
214.
by extropy 7y ago
Google needs to choose between two evils here: Give employees power / freedom and fire fast if you do stupid things. Stricter regulations/ checks so they cannot mess up hard in the first place. At the cost of slower pace and less
215.
by extropy 7y ago
These popups are security popups, the ones you would get from your antivirus/firewall and carry a certain Management endorsement weight. It's not a free for all space to put random messages into.
216.
by extropy 7y ago
The particular popup looks pretty official and scary as security popups should. And portrays that Google management is endorsing this instead of a grassroots poster. IMHO this is at minimum a misrepresentation case. And I would be pretty pi
217.
by extropy 7y ago
TLDR: let's put compute inside the memory. I'm very leaning towards calling this bullshit. Closer to memory compute is what we have been doing for last 10 years, and that's why we have ever increasing hierarchical caches. Yes
218.
by extropy 7y ago
Such nice fluffy words... How would that impact your daily life?
219.
by extropy 7y ago
Pinterest is already deeply demoted. I'm using Pinterest results as a sign that there is literally nothing else that matches my search.
220.
by extropy 7y ago
Thanks for sharing. I lean to agree that it's more of a shift in public perception of Big Data companies. And hurting Google even when it might be one of the better players.
221.
by extropy 7y ago
Facebook does have code that dynamically compiles arbitrary input to machine code. That's the part Apple is not allowing in third party apps.
222.
by extropy 7y ago
Fitbit already runs on Google cloud [1], IMO this has been in the making for some time already. [1] https://cloud.google.com/blog/topics/inside-google-cloud/new...
223.
by extropy 7y ago
Right and then pay with increased crime and homlessnes.
224.
by extropy 7y ago
The time scale is way off - 400 vs 70 years. The sword and eye of Inquisition might be a better match.
225.
by extropy 7y ago
A concise and technical summary from their blog: https://www.magnax.com/magnax-blog/axial-flux-vs-radial-flux...
226.
by extropy 7y ago
you don't need to hold on to the tether all the time. Linear motors on the car and embedded metal strips every 1 km and you have a Lunar rail gun :) In practice the rotational speed difference at different altitudes will make it a bit
227.
by extropy 7y ago
The gravity is only 3% up there, so more tricky. And reducing with square of the distance. Also every second you are accelerating straight up costs you gravity worth of Delta-v because gravity losses. So need to be quite short and intense b
228.
by extropy 7y ago
Since the tether will be moving a lot slower than sattelites in geostationary orbit, and the risk of collision, I assume stopping just short of geostationary is the closest that will be deemed reasonably safe.
229.
by extropy 7y ago
Also would introduce the tricky no way to abort if something goes wrong. Unless you are willing to carry a fast abort rocket with you.
230.
by extropy 7y ago
That's essentially what GTO is - an orbit going close and fast at one side and going high and almost stopped at high side. Going directly up means over 1h of fighting earth gravity. So need Isp > 3600. Much cheaper to go for orbit.
231.
by extropy 7y ago
Useful for refueling GTO sattelites from the Moon however. Just need to build a trans Lunar railway from the poles to supply the water. Or attach the damn thing to one pole because no atmosphere.
232.
by extropy 7y ago
No, dual cosmic lashing. One end hitting the moon the other one earth. On earth side the atmosphere will take the worst of it, moon will hurt... Also there is hardly any space debris beyond geosynchronous.
233.
by extropy 7y ago
It's dangling down from the moon. Going at moons speed - 28 days per revolution instead of geostationary 1 day. So less centrifugal force form rotation that is compensated by the cable strain.
234.
by extropy 7y ago
I would say all the companies are different branches of the same Con artist. Just working on different directions. I clicked around and some of them even don't exist outside of strathspeycrown. Several of them have just plain placehold
235.
by extropy 7y ago
You are impyling my bullshit detector needs "regligious art" class. Without explaining in laymans terms, you implicitly position yourself being "smarter than me" and I should be understanding what you say or go learn abo
236.
by extropy 7y ago
"pathfinding is actually a murderously complex programming challenge—one that, depending on the path, might be NP-complete." The article is crap, the actual interview makes a lot more sense. Fond memories :)
237.
by extropy 7y ago
Carbon neutral energy is what we need. Renewable energy defies physics.
238.
by extropy 7y ago
For autorotation you need to passively stay upright and a certain propeller area to weight ratio. All of which are not present in a typical multirotor.
239.
by extropy 7y ago
Giving off carbon dioxide might be fine if it's collected back from atmosphere in the manufacturing process.
240.
by extropy 7y ago
Random fact: gasoline was initially a waste product of producing kerosene - essentially free. So yes prices of gasoline went up once it started being widely used. IMO the storage and transportation issue is what kills hydrogen. Also compres

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