// PERSON
Horace He
ROLE ML SYSTEMS EXPERTMENTIONS 1LAST SEEN APRIL 29, 2026
// BIO
Horace He is an ML systems engineer currently at Thinking Machines, the AI research lab founded by Mira Murati. He spent four years as a core PyTorch developer at Meta, where he led work on torch.compile, FlexAttention, and TorchTitan, a PyTorch-native distributed training framework implementing 4D parallelism. He is best known for building high-performance ML infrastructure tooling and for his writing on compiler and training-systems internals at thonking.ai.
// RECENT MENTIONS
// SIGNALS
1 SIGNAL
01
mention·Dwarkesh·APRIL 29, 2026
“Last week Horace was kind enough to give me and my friends a great lecture on large scale pre-training systems and there were some concepts that I wanted to animate for a write-up on my blog.”
Source→AI-extracted from podcast / newsletter / paper summaries. May contain errors.