CANN

Sources: Nvidia chips remain the norm for Chinese AI labs training LLMs, as switching from its CUDA platform to Huawei's CANN requires major code rewriting (South China Morning Post)

Despite U.S. export controls and domestic efforts to build alternatives, Chinese AI labs continue relying on Nvidia chips for training large language models because migrating code from Nvidia's CUDA platform to Huawei's CANN framework demands extensive, costly rewriting.