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I attached all 3 algorithms 1F1B (1 forward 1 backward), ZB1P (zero bubble pipeline parallelism) and DualPipe as a picture here: https://x.com/danielhanchen/status/1894937006352031832 for those interested :)

Maybe add Chimera as well?

Oh more nice pictures :)

it looks as if Chimera has marginally less bubbles than DualPipe?

Off topic, but this is the Rick and Morty episode where Rick creates a perfectly level space.

The symmetry is uuugh.

You'll have to refresh my memory :) Is there like a Youtube clip for it?