PR #2616 moco: add ddp backend support with xccl

moco: add ddp backend support with xccl #2616

weishi-deng wants to merge 3 commits into pytorch:main from weishi-deng:moco-ccl

add xccl backend init

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chuanqi129 approved these changes on 2025-06-11

Merge branch 'pytorch:main' into moco-ccl

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Merge branch 'pytorch:main' into moco-ccl

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