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add wait_tensor() after all_gather in float8 to fix mem leak #262

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@bdhirsh bdhirsh commented May 16, 2024

I'm going to write a more detailed post internally to explain this memory leak

Tracking issue for a better fix in inductor: pytorch/pytorch#126338

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@bdhirsh has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

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@bdhirsh merged this pull request in 6891cbe.

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