Induction heads in a browser tab: a hand-written WebGPU trainer, and what the repeat rule and weight tying do to onset

A small transformer trains through the induction transition in a browser tab, on the reader's GPU, and reaches the same event step as PyTorch on 64 of 64 seeds. A seeds study on small models asks what sets the onset of induction and whether tying weights delays it. Code, logs and the command behind every number are in the repository.

Authors

Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2026-11-02
DOI
https://doi.org/10.5281/zenodo.23899099
Primary Topic
Topic Modeling
Type
preprint
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preprint

Induction heads in a browser tab: a hand-written WebGPU trainer, and what the repeat rule and weight tying do to onset

Abhay Mettu
1 links
Zenodo (CERN European Organization for Nuclear Research)
Topic Modeling
preprint

Induction heads in a browser tab: a hand-written WebGPU trainer, and what the repeat rule and weight tying do to onset

Abhay Mettu
preprint en

Abstract

A small transformer trains through the induction transition in a browser tab, on the reader's GPU, and reaches the same event step as PyTorch on 64 of 64 seeds. A seeds study on small models asks what sets the onset of induction and whether tying weights delays it. Code, logs and the command behind every number are in the repository.

Zenodo (CERN European Organization for Nuclear Research)
Topic Modeling
DOIOpen Access PDFOpenAlex
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Induction heads in a browser tab: a hand-written WebGPU trainer, and what the repeat rule and weight tying do to onset — Abhay Mettu · Zenodo (CERN European Organization for Nuclear Research) (2026) | TGRS Research Map | TGRS