Alex / catileptic

@catileptic.bsky.social

Move slow and fix things. Digital Rights Cat @ apti.ro. Senior Dev @ darc.li. Open-Source Dev, Human Rights Advocacy.

 Queer, RA 🏳️‍🌈

Breaking: the DOGE deposition videos have been taken off YouTube. On Friday the government asked a judge to intervene, said the videos could cause reputational damage, death threats. Judge agreed, ordered them removed: www.404media.co/doge-deposit...

DOGE Deposition Videos Taken Down After Judge Order and Widespread Mockery

The government asked a judge to stop the spread of the videos on YouTube. The judge agreed, and ordered their immediate removal.

404media.co

🚨 BREAKING: Oversight Dems received 95,000 new photos from Jeffrey Epstein's estate. These disturbing images raise even more questions about Epstein and his relationships with some of the most powerful men in the world. Time to end this White House cover-up. Release the files!

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It is intensely funny to me that tech bro CEOs on an annual salary of 15 petabillion dollars think data centres can go in space because it's very cold but actually they would get obscenely hot because heat won't radiate into the vacuum of space taranis.ie/datacenters-...

cold coolant returned to the loop. Typically the coolant is cooled via convective cooling to the air, so one way or another this is how things work on Earth.

In space, there is no air. The environment is close enough to a hard, total vacuum as makes no practical difference, so convection just doesn't happen. On the space engineering side, we typically think about thermal management, not just cooling. Thing is, space doesn't really have a temperature as-such. Only materials have a temperature. It may come as a surprise, but in the Earth-Moon system the average temperature of pretty much anything is basically the same as the average temperature of Earth, because this is why Earth has that particular temperature. If a satellite is rotating, a bit like a chicken on a rotisserie, it will tend toward having a consistent temperature that's roughly similar to that of the Earth surface. If it isn't rotating, the side pointing away from the sun will tend to get progressively colder, with a limit due to the cosmic microwave background, around 4 Kelvin, just a little bit above absolute zero. On the sunward side, things can get a bit cooked, hitting hundreds of centigrade. Thermal management therefore requires very careful design, making sure that heat is carefully directed where it needs to go. Because there is no convection in a vacuum, this can only be achieved by conduction, or via some kind of heat pump.

I've designed space hardware that has flown in space. In one particular case, I designed a camera system that needed to be very small and lightweight, whilst still providing science-grade imaging capabilities. Thermal management was front and centre in the design process – it had to be, because power is scarce in small spacecraft, and thermal management has to be achieved whilst keeping mass to a minimum. So no heat pumps or fancy stuff for me – I went in the other direction, designing the system to draw a maximum of about 1 watt at peak, dropping to around 10% of that wh…Cooling even a single H200 will be an absolute nightmare. Clearly a heatsink and fan won't do anything at all, but there is a liquid cooled H200 variant. Let's say this was used. This heat would need to be transferred to a radiator panel – this isn't like the radiator in your car, no convection, remember? – which needs to radiate heat into space. Let's assume that we can point this away from the sun.

The Active Thermal Control System (ATCS) on the ISS is an example of such a thermal control system. This is a very complex system, using an ammonia cooling loop and a large thermal radiator panel system. It has a dissipation limit of 16kW, so roughly 16 H200 GPUs, a bit over the equivalent to a quarter of a ground-based rack. The thermal radiator panel system measures 13.6m x 3.12 m, i.e., roughly 42.5 square metres. If we use 200kW as a baseline and assume all of that power will be fed to GPUs, we'd need a system 12.5 times bigger, i.e., roughly 531 square metres, or about 2.6 times the size of the relevant solar array. This is now going to be a very large satellite, dwarfing the ISS in area, all for the equivalent of three standard server racks on Earth.

Denmark dropped detection orders from the #ChatControl regulation proposal. A bunch of issues remain. The proposal still treats all citizens as already-guilty, already-suspect. It instills generalized surveillance, even if platforms get to do it voluntarily. www.patrick-breyer.de/en/half-good...

Half-good new Danish Chat Control proposal

Denmark, currently presiding over the EU Council, proposes a major change to the much-criticised EU chat control proposal to search all private chats for suspicious content, even at the cost of destro...

patrick-breyer.de

📣THREAD: It’s surprising to me that so many people were surprised to learn that Signal runs partly on AWS (something we can do because we use encryption to make sure no one but you–not AWS, not Signal, not anyone–can access your comms). It’s also concerning. 1/

Meredith Whittaker @meredithmeredith.bsky.social · 10mo ago

PSA: we're aware that Signal is down for some people. This appears to be related to a major AWS outage. Stand by.

NEW: A digital fashion startup that works w/ Puma, Lacoste, Snap advertised its AI product on Meta as a tool for non-consensual sexualized image generation. “Dress up your buddy’s wife in a Tiny latex dress," said one ad. The company blamed a contractor

“Dress up your buddy’s wife in a Tiny latex dress”: A digital fashion startup ran Meta ads for an AI app with an “undress” option

DressX, which has raised $15 million in financing, said the ads were placed by a contractor. Meta banned the ad accounts after being contacted by Indicator

indicator.media

"we need to focus on kitchen-table issues" hey wtf are you talking about at your kitchen table, if not the military being deployed to your cities and your family members being kidnapped by ICE and the genocide in Gaza going on two years and states maneuvering to make elections less democratic and

finished my homoerotic fantasy story~! it ended up being 10000 words and only a relatively condensed amount of sex. Ah well. it owns will host it (and the rest of my stories) once I get a new website up, hup hup.

Smotrich in direct challenge to the EU, on the plans to build in E1 area, that bisects the West Bank to two: "We are burying the Palestinian state. By September the hypocritical European leaders will have nothing to recognise"

An Israeli settler murdered Awdah Hathleen, Israel refused to release his body for 10 days and then IDF soldiers disrupted his funeral, declaring the Palestinian village a closed military zone in order to expel all journalists. Stuart Ramsay reporting.