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Cake day: March 4th, 2025

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  • A satellite constellation is a network of satellites. They aren’t geostationary, but can cover the whole globe because there’s so many of them. When a connection to one drops, it hands off to the next one. GPS and Starlink are examples.

    Radar satellites use radar to image the earth, so called SAR. It can be used to observe the ground even with cloud cover.

    A radar constellation combines this.


  • It’s a tradeoff between RAM and computing power. Discrete GPU RAM is limited. 24 GB is typically the most you can get as a consumer. That means you can‘t run the big models and running several at the same time ca be tricky as well. Offloading from GPU to system RAM is very slow because you run into memory bandwidth between GPU and CPU as the bottleneck.

    As long as the model fits on the GPU, they’re fast. Once you hit the memory limit, it’s game over.

    With unified memory you can run bigger models and also have higher memory bandwidth (depending on CPU).

    Memory bandwidth is super important for running LLMs. That’s also the reason Macs can be good for running LLMs. The M series have unified memory and the Pro, Max, and Ultra Chips have serious high memory bandwidth. An M series Mac with 48 GBs or more is a serious machine for LLMs.