descriptive claim
Andrej Karpathy says he chose not to use PyTorch DDP because he considered it unnecessary, and wrote a custom gradient-synchronization routine instead.
Andrej Karpathy · Andrej Karpathy — AGI is still a decade away · 17 Oct 2025
In their words
The transcript segments this claim was taken from
“I didn't use DDP because I didn't want to use it because it's not necessary.”
“So I threw it out and I basically wrote my own synchronization routine.”32:03Report a misattribution
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