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well today's #FreeSoftwareAdvent is a bit bittersweet.

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  • @stefano
    We shouldn't forget that the movements in memory manufacturers are because datacenter demands pays more compared with consumers demands.

    It's kinda "race". If consumers pay more, datacenters would pay even more.
    This means "cost pressures" on datacenters become higher and it should cause the fee for datacenters to be more expensive.

    So I think keeping data "in premise" being still competitive.

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  • Hardware Store Marauder’s Map is Clarkian Magic

    The “Marauder’s Map” is a magical artifact from the Harry Potter franchise. That sort of magic isn’t real, but as Arthur C. Clarke famously pointed out, it doesn’t need to be — we have technology, and we can make our own magic now. Or, rather, [Dave] on the YouTube Channel Dave’s Armoury can make it.

    [Dave]’s hardware store might be in a rough neighborhood, since it has 50 cameras’ worth of CCTV coverage. In this case, the stockman’s loss is the hacker’s gain, as [Dave] has talked his way into accessing all of those various camera feeds and is using machine vision to track every single human in the store.

    Of course, locating individuals in a video feed is easy — to locate them in space from that feed, one first needs an accurate map. To do that, [Dave] first 3D scans the entire store with a rover. The scan is in full 3D, and it’s no small amount of data. On the rover, a Jetson AGX is required to handle it; on the bench, a beefy HP Z8 Fury workstation crunches the point cloud into a map. Luckily it came with 500 GB of RAM, since just opening the mesh file generated from that point cloud needs 126 GB. That is processed into a simple 2D floor plan. While the workflow is impressive, we can’t help but wonder if there was an easier way. (Maybe a tape measure?)

    Once an accurate map has been generated, it turns out NVIDIA already has a turnkey solution for mapping video feeds to a 2D spatial map. When processing so much data — remember, there are 50 camera feeds in the store — it’s not ideal to be passing the image data from RAM to GPU and back again, but luckily NVIDIA’s “Deep Stream” pipeline will do object detection and tracking (including between different video streams) all on the GPU. There’s also pose estimation right in there for more accurate tracking of where a person is standing than just “inside this red box”. With 50 cameras, it’s all a bit much for one card, but luckily [Dave]’s workstation has two GPUs.

    Once the coordinates are spat out of the neural networks, it’s relatively simple to put footprints on the map in true Harry Potter fashion. It really is magic, in the Clarkian sense, what you can do if you throw enough computing power at it.

    Unfortunately for show-accuracy (or fortunately, if you prefer to avoid gross privacy violations), it doesn’t track every individual by name, but it does demonstrate the possibility with [Dave] and his robot. If you want a map of something… else… maybe check out this backyard project.

    youtube.com/embed/dO32ImnsX-4?…

    hackaday.com/2025/12/20/hardwa…

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  • @evan Collabora {Online, Office} and AbiWord.

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  • @jtonline excellent, no notes.

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  • Latest idea for the 2025 Christmas tree name...

    Volodymyr Zelenstree

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  • @evan At work, we're a Microsoft shop. In my personal life, I use a text editor.

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  • @virtuous_sloth yeah, it's a bug in ActivityPub, not Mastodon.

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    @nlarson830 @jbz : Yeah, I'm guessing if Firefox were to block ad-blockers they'd see an overall revenue drop.
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    Today in #FreeSoftwareAdvent, today it's OpenSMTPD¹.In the past I've tried to set up Sendmail, Postfix, Exim, and qmail at various junctures, but found them all unwieldy in their configuration syntax. Macros and compiling them, or digging through dozens of config files for relevant settings. Lots of "here are thousands of settings, but don't change them unless you really know what you're doing." It drove me a bit crazy.Then OpenBSD folks created OpenSMTPD.The configuration syntax was sensible and simple. It didn't try to do everything, just adequate SMTP serving with some privsep. It was easy to point it at certificates that acme-client(1) obtains for me via httpd(8) interactions scheduled in cron(8), all within the base system.It's the MTA with OpenBSD's fingerprints of simplicity & security all over it.⸻¹ https://opensmtpd.org/
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    Though a bit niche, my #FreeSoftwareAdvent today is ed(1). As the goofball behind @ed1conf, I certainly play it up, but I certainly use it more than the average Unix/BSD/Linux user.A while ago I wrote up list of reasons¹ why one might use ed, and some are more obscure/improbable reasons (though I've encountered all of them in that post), there are a couple of those that drive me back to ed regularly:• I can still see the output of previous commands on the screen while I edit, where a full-screen editor would obscure that output that I need to incorporate in my edit• it's just darn fast for a quick edit, changing a variable name or adding/removing an entry in a list, etc. No startup costs for a honkin' huge $VISUAL with dozens of plugins and language-server processes and GUI rendering• very usable on low-bandwith/high-latency connections like I sometimes get when I remote into machines (less of a problem now, but I still experience sessions where I'll SSH in, invoke ed, make the change, write & quit, and exit the shell, in a couple seconds, while the screen repaints things oh-so-slowly• and most importantly, there's quality geek-cred for using it in front of others 😆⸻¹ https://blog.thechases.com/posts/cli/why-ed1/
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    Does anyone know how to get the feed of news suggested by #Firefox? I saw an interesting new, and I told myself "I'll open it later". Then after less than an hour I opened a new tab but couldn't find that suggestion anymore