descriptive claim
An intern built a custom activation-checkpointing scheme that trades compute for memory by recomputing some activations during backpropagation rather than storing all of them after the forward pass.
Unidentified speaker · Si Sheppard – How did a few hundred Spanish soldiers topple two empires? · 1 Oct 2026
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“Another intern built a custom activation checkpointing scheme.”
“Activation checkpointing lets you trade compute for memory.”
“You recalculate some activations during backprop instead of storing them all after the forward pass.”Play from 21:59Report a misattribution
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