| > 1. How do you cool your chips? Vacuum is a thermal insulator, so radiators are required to remove heat. This is space 101 and honestly, at this point, I consider bringing this up as disqualifying from giving criticism on the topic. > nVidia (or even ASICs) require much and specialised cooling. Whatever. They generate N kW of heat, you need to shed N kW of heat, and you need to fit that within your budget. End of worry. Pro tip: if you can slice your problem so that individual satellite needs to shed less than M kW of heat, where M corresponds to how much heat some existing, deployed satellite platform handles, you can just do your initial design around that satellite platform, replacing the "business payload" with yours. This is e.g. how the unfairly criticized recent "satellite swarm TPUs" paper from Google handled it. Everyone who brought up cooling revealed themselves as not having read the first page and not having thought about it seriously for more than 30 seconds. > 2. How does one radiation harden a H100? See that paper for some ideas and considerations, as this is part of what they focused on, after solving cooling by sizing the per-satellite payload power needs to Starlink. |