Hacker News: jankeymeulen

New comment by jankeymeulen in "China's Data Center Boom: A View from Zhangjiakou (2025)"

jankeymeulen — Tue, 10 Feb 2026 20:39:13 +0000

From the article: 1.859 billion kWh. Divide by 1 year = 212 megawatt. Definitely not small. Not that gigantic either, compared to current day (US) AI/hyperscalers.

New comment by jankeymeulen in "Giant, all-seeing telescope is set to revolutionize astronomy"

jankeymeulen — Fri, 20 Jun 2025 07:26:47 +0000

Storage densities these days are kinda amazing, it's not that much of a datacenter. Assuming you chunk it with triple redundancy, that's 220k TB raw. 10k 22 TB disks, you put them in one of those 4U 50 disk storage pods. 200 pods, 10 of those in a rack with some space left for a switch and power, so that's only 20 racks.

New comment by jankeymeulen in "Meta buys a nuclear power plant (more or less)"

jankeymeulen — Wed, 04 Jun 2025 14:00:17 +0000

Adding more 9s is costly, and AI training is very suitable to be throttled and/or interrupted. I'm not talking about days or weeks of downtime, but these things are definitely being considered. Source: I'm working at a Google datacenter.

See e.g. this post from Urs Hölze, one of the fathers of hyperscale computing: https://www.linkedin.com/posts/urs-h%C3%B6lzle_rethinking-lo...

New comment by jankeymeulen in "Meta buys a nuclear power plant (more or less)"

jankeymeulen — Wed, 04 Jun 2025 09:06:41 +0000

Depends on the use case. Dedicated datacenters for ML training can trade off power reliability vs. other factors like cost or carbon emissions.

New comment by jankeymeulen in "Why is AI so popular when nobody wants it?"

jankeymeulen — Tue, 29 Apr 2025 19:43:57 +0000

I was thinking the same, who on earth would want that, so did my technical colleagues, but since the AI summaries rolled out over here, non-technical folks I've asked about it actually seem to like it.

New comment by jankeymeulen in "BYD says new fast-charging system could be as quick as filling up a tank"

jankeymeulen — Tue, 18 Mar 2025 12:02:19 +0000

A 5V drop at 1000 Amps also means 5000 Watts of heat generated, you probably want something with less of a drop.

New comment by jankeymeulen in "It is no longer safe to move our governments and societies to US clouds"

jankeymeulen — Sun, 23 Feb 2025 20:33:58 +0000

Not really, the whole point of this type of cloud offering is that it doesn't phone home to Google / the US. Sure, it will be left to the partner to support all of it, but it can't be shut down from one day to the other.

(Googler, opinion my own)

New comment by jankeymeulen in "WH Executive Order Affecting Chips and AI Models"

jankeymeulen — Mon, 13 Jan 2025 14:53:08 +0000

Take a look where (US) hyperscalers have presence, they still need to be able to expand.

New comment by jankeymeulen in "TPU transformation: A look back at 10 years of our AI-specialized chips"

jankeymeulen — Sun, 04 Aug 2024 13:12:10 +0000

The TPUs are highly integrated with the rest of the internal Google ecosystem, both hardware and software. Untangling that would be ... interesting.

New comment by jankeymeulen in "Edinburgh, Scotland makes it illegal to advertise SUVs"

jankeymeulen — Sun, 16 Jun 2024 18:45:09 +0000

but paper that ends up in the environment is almost surely better

New comment by jankeymeulen in "Google Earning Q1 2024 [pdf]"

jankeymeulen — Thu, 25 Apr 2024 21:47:15 +0000

There is a $6B increase in purchase of properties and equipment vs. 23Q1.

New comment by jankeymeulen in "Volkswagen, Porsche, and Audi say they will use Tesla's EV charging plug"

jankeymeulen — Wed, 20 Dec 2023 16:14:14 +0000

3 phase typically has 400V between the phases and neutral in Europe, the phases don't gain you anything, but the voltage does.

New comment by jankeymeulen in "Rumours of SR-71 Blackbird Successor from Lockheed's Skunkworks"

jankeymeulen — Thu, 23 Nov 2023 12:31:07 +0000

Small? I saw an SR-71 at National Air and Space Museum near Dulles and I was amazed by how big is for a two-seater.

New comment by jankeymeulen in "Employees are feeding sensitive data to ChatGPT, raising security fears"

jankeymeulen — Mon, 27 Mar 2023 20:30:16 +0000

Not really. Even the most evil Google one can imagine would realise "your data" is the most valuable thing they possess, selling it would be bad for business. They're selling ads to the highest bidder who's looking for someone with a profile based on your data, but not your data itself.

New comment by jankeymeulen in "OpenAI is now everything it promised not to be: closed-source and for-profit"

jankeymeulen — Wed, 01 Mar 2023 20:32:56 +0000

So is OpenAI actually, GPT -> transformer, invented at Google. DALL-E -> diffusion, invented at ... Google.

Ritom Pumped-Storage Plant Project

jankeymeulen — Mon, 06 Feb 2023 16:13:28 +0000

Article URL: https://www.youtube.com/watch?v=6AV2NcyX7pk

Comments URL: https://news.ycombinator.com/item?id=34679550

Points: 1

# Comments: 0

New comment by jankeymeulen in "3M to end 'forever chemicals' output"

jankeymeulen — Wed, 21 Dec 2022 14:05:29 +0000

Good you mention a teflon-type coating in a discussion about 'forever chemicals'.

New comment by jankeymeulen in "Activist glues his head to glass covering 'Girl with a Pearl Earring' painting"

jankeymeulen — Thu, 27 Oct 2022 18:46:46 +0000

sound like just the caption of the stock photo copy/pasted, they typically have these kind of very specific descriptions

New comment by jankeymeulen in "AWS switch from gzip to zstd – about 30% reduction in compressed S3 storage"

jankeymeulen — Sat, 20 Aug 2022 09:48:47 +0000

Amazon will pay perhaps $50 for a 10TB disk, 10x it to cover for redundancy and the servers and datacenters to put the disks in, and you're looking at "only" 16 mil savings for an exabyte.

New comment by jankeymeulen in "Just another Apollo? Part two (2005)"

jankeymeulen — Tue, 14 Jun 2022 12:14:16 +0000

They'd be retired by now, even the most junior engineer in 1970 would be into their seventies.