Wouldn't SMT be a feature that you are free to use when designing your own cores? I'm assuming Amazon has an architectural license (Annapurna acquisition proba

Wouldn't SMT be a feature that you are free to use when designing your own cores? I'm assuming Amazon has an architectural license (Annapurna acquisition probably had them, this team is likely the Graviton design team at AWS). So who is the upstream provider? ARM? And if they designed the CPU wouldn't they decide which memory controller is appropriate? Seems like AWS should get as much credit for their CPUs as Apple gets for theirs. Bottom line for Graviton is that a lot of AWS customers rely on open source software that already works well on ARM. And the AWS customer themselves often write their code in a language that will work just as well on ARM. So AWS can offer it's customers tremendous value with minimal transition pain. But sure, if you have a CPU-bound workload, it'll do better on EPYC or Xeon than Graviton.