华为硬件的 feature 支持

请问目前针对华为 ascend 系列，ROLL 可以支持 async rollout 和 async tranning 吗？

The issue asks whether ROLL supports async rollout and async training on Huawei Ascend hardware, but it names no files, tests, or entry points. Start by reading the project documentation and existing hardware support; identify the relevant rollout and training paths and how they are tested. Done would require establishing support status or defining and implementing the requested compatibility, neither of which is scoped here.

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