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NotMyOldRedditName

@ NotMyOldRedditName @lemmy.world

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3 yr. ago

  • 'Consider a system with no DRAM' replaced by a 'recycling fiber loop': John Carmack envisages bold future to avoid AI-driven RAM crisis

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  • So we'll soon have houses built with a place to hold a spool of 200km multi fiber cable (which shouldn't be too big, Ukrainian drones carry 40km worth of single strand but this couldbe 10 or 20 strand) and we can plug our computers into it.

  • U.S. customs searched a record number of electronic devices last year— Recently revised directive adds flash drives, smart watches to searchable devices

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  • Have it take over the computers camera, take a picture of them, use AI to remove their clothes, do a Nelson HaHa pointing at the camera pic, then brick the computer.

  • U.S. customs searched a record number of electronic devices last year— Recently revised directive adds flash drives, smart watches to searchable devices

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  • I wonder how that would go if you explicitly tell them what it is and they did it anyway. Hiding its purpose might cause issues, but telling them and being ignored must be different?

  • What's a TV series that you really, really liked and would enthusiastically recommend?

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  • I loved season 1, Aubrey Plaza was amazing in her role. I never made it through season 2 though, i got distracted with things and never got back to it.

  • What's a TV series that you really, really liked and would enthusiastically recommend?

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  • Makes me happy to see Burn Notice listed.

  • Dynamic pricing could be coming to your local supermarket

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  • That's a little different.

    Items that can expire get marked down at some point during the day, but they aren't changing the normal price of the item. If there's 20 packs of chicken breasts on the shelf, 5 or 6 might get the sticker.

    There's no guarantee that the one you have would have even gotten a sticker, and if you're savvy enough, you might have intentionally chosen the pack with the earliest most recent packed on date, or gone late enough to be after the mark down time near the end of the day (at least where I am)

    They aren't just going up and marking down the main price on everything, and its also always down, never up.

  • Dynamic pricing could be coming to your local supermarket

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  • Haggling might be fine but they have to honor price tags.

    If I'm in a grocery store and I see $1.00 they can't change it and try to charge me $1.10, and when I object and say it was $1.00 it shows $1.10 now.

  • Dynamic pricing could be coming to your local supermarket

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  • Should be against the law to change the price after the shop opens at something like a grocery store. Nobody should be able to shop anywhere where the price you pick it up at can change by the time you get to the checkout.

    Edit: Maybe there could be some exception for mid day price changes if you emptied the entire store of customers first, but enforcing something like that seems difficult.

  • Cops who went to snowball fight launch manhunt for people who threw snowballs at them

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  • 🤣 When I first saw this story headline (not this post) I thought the cops had snowballs thrown at them, not that they went to a snowball fight and got snowballs thrown at them 🤣

  • Datacenters in space are a terrible, horrible, no good idea.

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  • The coolant still needs to remain relatively cool to hold that silicon temperature, though. Practically it can't be like 60C.

    Ah, ya that makes sense, whatever the numbers the the chip can be the coolant will be less.

  • Datacenters in space are a terrible, horrible, no good idea.

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  • I just wanted to add another note

    Even if this ozone thing turns out to not be true, there are still all sorts of other things being burned up in the atmosphere that can have other potential effects. It all needs to be studied given the size of these constellations.

    I wouldn't be surprised if 50-60 years from now, if there is a real issue, that it eventually comes out that SpaceX or other mega constellation companies figured out it would be a problem, and just said nothing. Much like how big oil new CO2 was a problem forever ago and hid it.

  • Datacenters in space are a terrible, horrible, no good idea.

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  • It's possible it could go to a higher orbit, but we don't have mega constellations in those orbits. I don't know enough to know how far something could get flung up either, but I suspect if you're in a 5y orbit, you aren't reaching a 50y orbit area, and probably not even a 10y orbit area.

  • Datacenters in space are a terrible, horrible, no good idea.

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  • Ya, the economies of how much total space / material for the global network is similar, although lets say higher due to losses in efficiency in distributing it over so many dishes, but in terms of how big any individual radiator is and how much space each one is going to take, the smaller sizes make it easier to manage. Trying to figure out a 150-200m2 solar panel radiator is a lot easier than trying to figure out a 1km2

    The individual power of each satellite having to use a mesh network to train might not be fast enough, maybe they'll still use land based ones for training, but no single person needs more compute than what a satellite can provide. So from the inference / customer computation side of things, it isn't a problem.

    edit: I meant radiator, not solar panel

    edit: looks like blackwells can run sunstained at 88c, so that will help a bit more as well on size, the calculator now says 103m2 instead of 127m^2

  • Datacenters in space are a terrible, horrible, no good idea.

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  • They aren't making a datacenter like on earth. They're putting up a ton of satellites that will each generate about 100kW.

    Everyone keeps thinking they're putting these massive things up there, they are not doing that.

    Edit: Oh I missed your tool this time was a real calculator this time, thank you! That says 127 square meters, with black body, 70c and 1 (but no idea if those are good values)

  • Datacenters in space are a terrible, horrible, no good idea.

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  • For 100kW? I'm not going to try and figure things out from that massive site. A pre made calculator would have been nice if they had one.

    edit: It is going to be LEO and likely connected to starlink with the same laser link they use.

    Edit: Looking at orbits they might use sun synchronous orbits? It might not be in sun 100% of the time, but they are nearly always in sun.

    Edit: I have no way to know if this is right, but a couple AI responses are saying for 100kW it would be ~150-170 square meters with temperatures around 70c

  • Datacenters in space are a terrible, horrible, no good idea.

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  • We already radiate heat away just fine in space, it's just a matter of how much space do you need to use to do it and all the implications of what that would mean for any given satellite. I wouldn't call it free, because you need the hardware to do it and the extra weight reduces the payload capacity of whatever you're sending up, but we can do it.

    Starlink also uses laser links to talk to each other which these satellites would also use. How they work can depend, but generally they bounce around in space until they can't, and they might come back down to land, to move somewhere else over fiber to another ground station until they can go back up to reach you. But the more laser links the less they have to come down for technical reason, but they might still come down for bandwidth reason. I don't really know how likely it is that any given connection is point to point.

    Example of what could happen.

    Your dish -> starlink -> starlink -> ground station -> Google -> ground station -> starlink -> ground station -> starlink -> groundstation -> starlink -> starlink -> your dish.

    Fiber is still the better option on land if you can get it there, but there are a lot of places it's never going to get laid, and will never be in the air, or on bodies of water.

    Edit: Corrections on the laser links with an example.

  • Datacenters in space are a terrible, horrible, no good idea.

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  • This isn't true for low orbit items. They will come down on their own in ~5 years.

    At the absolute worst case scenario, we'd be blocked or ~5 years. Maybe 10 years if they put it a little higher.

  • Datacenters in space are a terrible, horrible, no good idea.

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  • If they stop working they will just de-orbit it early, or if they can't cause it's really broken, they'll just wait the ~5-10 years to come down on it's own.

  • Datacenters in space are a terrible, horrible, no good idea.

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  • I don't think anything was proven yet, but something came out saying it warranted more studying?

    Satellites might need to be redesigned around it in the future and more studies should be done.