Earlier quoted context omitted.
I honestly don't understand the meme with RPi clusters. For a little more money than 4 RPi 5's, you can find on eBay a 1U Dell server with a 32 core Epyc CPU and 64 GB memory. This gives you at least an order of magnitude more performance. If people want to talk about Beowulf clusters in their homelab, they should at least be running compute nodes with a shoestring budget FDR Infiniband network, running Slurm+Lustre…
You can buy it but you can't run it, unless you're fairly wealthy. In my country (italy) a basic colocation service is like 80 euros/month + vat, and that only includes 100Wh of power and a 100mbps connection. +100wh/month upgrades are like +100 euros. I looked up the kind of servers and cpus you're talking about and the cpu alone can pull something like 180W/h, without accounting for fans, disks and other stuff (stu…
A connection to a home wouldn't be rated in kilowatt-hours, it would likely be rated in amps, but could also be expressed in kilowatts.
> 100wh/month upgrades are like +100 euros.
I can't imagine anybody paying €1/Wh. Even if this was €1/kWh (1000x cheaper) it's still a few times more expensive than what most places would consider expensive.