Post #4414303

@davidgerard@circumstances.run The cooling was good — but maintenance and operation was a massive pain Actually, from the Microsoft experiments here, cooling wasn't good. The corrosive bit isn't really a problem. We know how to build things that spend decades in sea water. And you're not going to run the sea water directly over the GPUs, you're going to do heat exchange. The problem is that this involves sea water moving through narrow (at least, narrow relative to the sea) pipes. And there are a lot of things that have evolved to find narrow places that sea water moves through because these are places where it's easy to get nutrients. So, within a few weeks, you start to notice that you're not getting much water flow because the pipes are full of sea weed. If you put a filter in front that's small enough to catch seeds, you limit the flow a lot (and the filter needs cleaning basically every hour). It turns out you can sterilise sea water quite easily to avoid this kind of problem though: just boil it first.