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Joined 2 years ago
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Cake day: April 13th, 2024

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  • I wish people (especially journalists) would get it through their skulls already:

    • Vehicles don’t communicate with satellites.
    • GNSS (like GPS, GLONASS, Galileo, or BeiDou) do not use two way communication.
    • The satellite can therefore not know the position of a GNSS receiver.
    • Instead the satellites send timestamps and their positions, the receiver uses that information to calculate its own position. If the system with the receiver needs to report its position to someone they typically use some form of terrestrial communication, like mobile phone networks.

    With that knowledge the comment by /u/imetators@lemmy.dbzer0.com makes a lot more sense than whatever the article is trying to imply about satellite failures.




  • It may act on the whole market, but it doesn’t have the same impact on every OEM.

    It’s a bigger issue for Valve than the console competition, who have established supply chains potentially with fixed prices for certain terms or at least more significant volume discounts, and proprietary compatibility hurdles binding their customers, so they can sell hardware at a loss if they want to.

    If Valve sells the computers at a loss they run the risk of people buying them for other uses, without generating corresponding Steam profits.


  • Yeah I don’t know why anyone entertains the idea.

    Lifting things to LEO still costs around 2000 USD per kg, even with modern cheaper prices thanks to reusable rockets. For a datacenter presumably you’d have to go higher where you have less drag, because you can’t keep doing burns for repositioning. So that sounds like it would already make everything so much more cost prohibitive. And the vibrations of a start are probably also not trivial, if your components are all hardened instead of off the shelf that will cost you more too. I see no world where that’s more economical than buying some cheap land in flyover USA and have truckers drive things there.

    Regarding maintenance there are some approaches where you build more redundancy ahead of time and then let broken things rest in place. At least that was the spiel an Azure evangelist gave us once when I was an intern at a webdev shop (in 2012). But still, once enough breaks down (I think it was a third of components) they would usually then exchange an entire container. So yeah still not great for space.

    The energy I don’t know about really, but at least it doesn’t sound impossible that it could be decent for solar, as long as you can deal with more and more holes in your solar sails over time. At least you wont have to deal with diurnal cycles I guess. But the heating is really the killer issue imho. You’d have to radiate off heat in a massive scale. Heat management for the ISS is fairly complex already. I don’t see how they would efficiently do this on a 5 GW scale. And once again a component level issue: all your cooling from the rack out has to be set up for it. No more fans local to systems, everything is heatpipes that need to connect to the entire spacecraft somehow.





  • To make the desktop experience bearable: AltTab, Forklift, Rectangle, Ukelele, MonitorControl, Amphetamine, Firefox, Thunderbird, qView and duti to set the latter three up as the defaults.

    As a package manager I’m pretty happy with nix-darwin, now I get all the CLI tools there, and what isn’t packaged, like wireshark for example, I get through my nix-controlled homebrew.

    Coming from a Linux userland you might want to replace some coreutil packages with their GNU variants. I ran into one case where the GNU grep was much faster than the BSD version preinstalled in macOS for example.

    What I haven’t found a good solution to yet is Filesystem support. Both NTFS and ext4 are missing. I currently have a Linux VM just for that. I think Paragon sells a driver, have been meaning to look into it more, but haven’t.

    Edit: To be fair to macOS the App called Preview is a pretty good PDF reader in my view.

    PS: If you ever need to use dd on macOS, be aware that there are /dev/rdisk handles instead of /dev/disk for the un-buffered access. Its significantly faster for dd shoveling.

    PPS: You will probably have to turn off what they call “natural” scroll. macOS inverts the default for some reason.










  • I think it’s all performative bullshit, not good policy.

    Some decision maker has to appear innovative to his superiours, so he decides to have some number of locations assigned to a trial group and some bullshit installed. Even if it fails, just as long as he finds the right moment to start appearing critical of the experiment he can still pull off his play. After all moving fast and failing fast are also virtue in modern corporate bullshit lingo.