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Maximilian Böther

Verified account DatologyAI

@MaxiBoether

making data loaders go brr (deterministically) | mts @datologyai | prev. Ph.D. @SystemsGroupETH @anaklimovic
Zurich, Switzerland mboether.com Joined October 2012
1.2K Following 518 Followers 893 Posts

Latest posts 5

Maximilian Böther Verified account @MaxiBoether
Very happy that the Zephon team and Pytorch/Torchtitan are working together to make data loading more deterministic.

Check out our example integration: github.com/datologyai/tor…

Check out our blog post together with the folks at Meta 👇
github.com GitHub - datologyai/torchtitan-zephon Contribute to datologyai/torchtitan-zephon development by creating an account on GitHub.
PyTorch Verified account @PyTorch Oct 16
Zephon’s TorchTitan integration preserves identical global batches when training resumes on a different GPU count.

In our latest blog’s 1B-parameter model test, training resumed from a 16-GPU checkpoint on 8, 32, and 64 GPUs, and the SHA-256 hash of every global batch matched the original run.

Zephon tokenizes, packs, shuffles, and mixes data inside the training job, avoiding a preprocessed copy of the corpus.

The data, tokenizer, seed, mixture, context length, and global batch size must stay unchanged when resuming. The lane count must divide evenly across data-parallel replicas, and each optimizer step’s batch must split evenly across lanes. Training losses can still differ because floating-point reduction order depends on GPU count.

✍️ @datologyai @josh_wills @MaxiBoether, Ties Robroek (@datologyai)

Read more: pytorch.org/blog/bringing-…
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Maximilian Böther Verified account @MaxiBoether
A data loader is only as useful as the data it loads. This is why this week is so exciting: we're sharing our Curation Studio and how we use it to generate the best tokens (or raw strings to be tokenized and packed on-the-fly) possible. Check out our release announcement!
DatologyAI @datologyai Oct 9
Today, we’re excited to launch the Datology Curation Studio, customizable frontier data curation for every team training its own models.

Data quality is the ultimate compute multiplier, and Curation Studio makes it easy for everyone.
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Maximilian Böther Verified account @MaxiBoether
DataComp-VLM aka DCVLM is finally out! It was such a pleasure working with this team of cracked ML data folks. Check out what changes in comparison to DCLM as we have surprising findings for our VLM data pool.

Models are what they eat, and it continues to show!
Vishaal Udandarao @vishaal_urao Jul 2
🚀New Paper
arxiv.org/abs/2606.28551

Everyone obsesses over VLM architectures & training recipes. But what about the data?

Presenting the latest work in the DataComp-series: a testbed for VLM data curation with 1,000+ controlled experiments and some surprising lessons 👀

🧵👇
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