- A recent change made DeepSpeed optional (off by default), but the code was still trying to load DeepSpeed even when `use_deepspeed = False`. This means users would still have a big startup slowdown and a lot of error messages if their DeepSpeed module isn't working (usually because it's not able to compile itself on their machines).
- We now only load DeepSpeed if the user requested it.
- Translated the DeepSpeed error message to English, since all other errors in the same function were already English.
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