Julien ARNAUD (21)

2025 Energy Retrospective

Notable events Mid-july, my Mazda MX-30, parked, got totaled by a Tesla driver (obstacle avoidance? go figure...). Replacement is my trusty Twizy. The twizy is not used to go for long drives and is slightly more efficient. This is a followup to the 2024 Energy Retrospective. Solar production is fairly similar to last year's. We reach 450kWh in June 26 where the maximum was 360kWh August 24. Mostly due to temperatures and intensive use of the air conditionning. The minimum monthly production during winter are now around 140kWh (up from…

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Late Summer 2025 Laptop

September 6th 2025, I had a mild stroke when I discovered that AMD did something very similar to Apple's M{n} generation chip : an APU with tons of shared memory between an excellent CPU and very capable GPU (comparable to an RTX 4000 Ada Mobile). The Ryzen AI Max+ 395 (this naming...), allows for 128GB of memory available to the GPU. This run gpt-oss-120b at 35+ token/s. Let me reinstate : It can run. a 120B model. at real-time speed. It's INSANE. Granted gps-oss-120b is an MoE, but still you…

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Laptop backup strategy, the paranoid way

My laptop (called Juniperus) has a 4Tb NVMe drive occupied at 75%, content is roughly distributed as such : Having lost a hard drive when I was 16 and having cried a river about it (it was a Maxtor 40Gb on a sunny summer's day)... I now have a strong backup policy. They are spread in 4 places using 3 different backup technologies. This server (called Tsuga) runs Debian and uses a 1Tb Micro SD. It is powered by a PoE hat. The aluminium enclosure only has one RJ45 sealed…

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2024 Energy Restrospective

Notable events May 9th, a first batch of 4 solar panel where installed on the first roof (instead of the floor) October 25th, a second batch of 4 solar panels where installed on the second roof (instead of the floor) During winter 2023-2024 I used the heatpump of the car. For 2024-2025, I stopped heating the car unless defrosting is necessary. Overall solar production Installation of the first batch of solar panel on the roof increased production drastically, as these were previously in the shade most of the day. The…

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Self hosted web services and infrastructure

[this article is a work in progress] I'm a strong advocate for local hosting over cloud services provided by big tech companies like Google, Apple, Facebook, Amazon, and Microsoft (GAFAM). I have no trust in these corporations, and some of their decisions pose significant threats to civil rights. For instance, Apple's move to scan all your photos for illegal content (initially). The importance of data sovereignty and the risk of surveillance are critical issues. Thus, to the best of my ability, I prefer to host everything myself. At home, everything…

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