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about: Sam Foreman about/more: 🪪 More ideas: 💡 Ideas more: ➕ More now: Now posts: 📬 Posts posts/2023/12/05: 🔳 l2hmc-qcd Example: 4D SU(3) posts/2025: 📆 2025 posts/2025/04/28: 🔥 Building PyTorch 2.6 from Source on Aurora posts/2025/05/03: 🚧 Frameworks Issue with numpy \› 2 posts/2025/06: 06 posts/2025/06/01: 📰 Nice Headings posts/2025/06/02: 🧜‍♀️ Mermaid posts/2025/06/14: 🏗️ Building PyTorch 2.8 from Source on Aurora posts/2025/09/12: 🍹 BlendCorpus + TorchTitan @ ALCF posts/2025/09/17: 📊 pbs-tui: TUI for PBS Job Scheduler Monitoring posts/2025/10/06: 🎨 Mixing Between Distributions While Training posts/2025/11/12: 🧊 Cooling Down Checkpoints: Best Practices for Model Evaluation posts/2026/01/07: 🎉 Happy New Year! posts/2026/01/10: 🍋 ezpz: distributed PyTorch across any hardware posts/2026/02/28: ⏱️ Comparing Launchers on Aurora posts/2026/02/28: ## torchrun posts/2026/02/28: ## ezpz posts/2026/04/27: Pre-Training AuroraGPT with TorchTitan posts/2026/04/27: ## Two-Week Summary (Apr 12–27, 2026) posts/2026/04/27: ## Detailed Breakdown posts/2026/04/27: ### Week 1: Apr 12–18 — Benchmarking, LR Finder, XPU Fixes posts/2026/04/27: #### Benchmarking (Apr 12–15) posts/2026/04/27: #### LR Finder (Apr 12–14) posts/2026/04/27: #### Scaling Study (Apr 12) posts/2026/04/27: #### Upstream Syncs (Apr 12–18, syncs 6–14) posts/2026/04/27: #### XPU Bug Fixes (Apr 18) posts/2026/04/27: #### RL Experiment (Apr 18) posts/2026/04/27: ### Week 1.5: Apr 18–25 — Production Readiness posts/2026/04/27: #### Torch 2.12 Benchmarks (Apr 18) posts/2026/04/27: #### LR Finder Extensions (Apr 20–21) posts/2026/04/27: #### XPU Fixes (Apr 23) posts/2026/04/27: #### Torch 2.13 Environment (Apr 25) posts/2026/04/27: #### 2B Scaling Study on Torch 2.13 (Apr 25) posts/2026/04/27: #### Production Training (Apr 25) posts/2026/04/27: ### Week 2: Apr 26–27 — Optimizer Competition posts/2026/04/27: #### RL Multi-Task Refactor (Apr 26) posts/2026/04/27: #### Docs Reorganization (Apr 26) posts/2026/04/27: #### Generic HF Dataset Streaming (Apr 26) posts/2026/04/27: #### New Optimizers (Apr 26) posts/2026/04/27: #### Architecture Tweaks (Apr 26–27) posts/2026/04/27: ## Competition Results posts/2026/04/27: ### Round 1–3: Speedrun — 2N, GBS=48, 1000 steps posts/2026/04/27: ### 10B Full Training — 8N, GBS=384, ~3,178 steps posts/2026/04/27: ### Round 4: Reproducible Speedrun — 2N, GAS=8, GBS=384, 1000 steps posts/2026/04/27: ## Key Discoveries posts/2026/04/27: ## Infrastructure Built posts/2026/04/27: ## High-Level posts/2026/04/27: ## Detailed Breakdown posts/2026/04/27: ### Week 1: Apr 12–18 — Benchmarking, LR Finder, XPU Fixes posts/2026/04/27: #### Benchmarking (Apr 12–15) posts/2026/04/27: #### LR Finder (Apr 12–14) posts/2026/04/27: #### Scaling Study (Apr 12) posts/2026/04/27: #### Upstream Syncs (Apr 12–18, syncs 6–14) posts/2026/04/27: #### XPU Bug Fixes (Apr 18) posts/2026/04/27: #### RL Experiment (Apr 18) posts/2026/04/27: ### Week 1.5: Apr 18–25 — Production Readiness posts/2026/04/27: #### Torch 2.12 Benchmarks (Apr 18) posts/2026/04/27: #### LR Finder Extensions (Apr 20–21) posts/2026/04/27: #### XPU Fixes (Apr 23) posts/2026/04/27: #### Torch 2.13 Environment (Apr 25) posts/2026/04/27: #### 2B Scaling Study on Torch 2.13 (Apr 25) posts/2026/04/27: #### Production Training (Apr 25) posts/2026/04/27: ### Week 2: Apr 26–27 — Optimizer Competition posts/2026/04/27: #### RL Multi-Task Refactor (Apr 26) posts/2026/04/27: #### Docs Reorganization (Apr 26) posts/2026/04/27: #### Generic HF Dataset Streaming (Apr 26) posts/2026/04/27: #### New Optimizers (Apr 26) posts/2026/04/27: #### Architecture Tweaks (Apr 26–27) posts/2026/04/27: ## Competition Results posts/2026/04/27: ### Round 1–3: 1000-step speedruns, 2 nodes, GBS=48 (17 configs) posts/2026/04/27: ### Round 4 (10B full training, 8 nodes, GBS=384, 5 configs) posts/2026/04/27: ### Round 5 (2 nodes, GAS=8, GBS=384, local dataset, 8 configs — in progress) posts/2026/04/27: ## Key Discoveries posts/2026/04/27: ## Infrastructure Built posts/2026/05/01: Running 50k Python Processes on Aurora with ezpz yeet posts/2026/06/27: Local AI Apps on ALCF: Argo, Inference Endpoints, and One Gateway posts/2026/06/28: Migrating from Quarto to Astro: samforeman.me → samf.sh posts/2026/08/08: Pre-Training LLMs on a Supercomputer posts/2026/09/22: Working From Anywhere: Persistent Access to Compute and Context posts/2026/09/25: A Small Service Mesh for My Macs and Supercomputers posts/ai-for-physics: ⚛️ AI for Physics posts/ai-for-physics/diffusion: 🎲 MCMC + Diffusion Sampling posts/ai-for-physics/l2hmc-qcd: 🎢 L2HMC for LQCD posts/ai-for-physics/l2hmc-qcd/2du1: 🎢 l2hmc-qcd Example: 2D U(1) posts/auroragpt: 🤖 AuroraGPT posts/auroragpt/aurora-gpt: 🏎️ Megatron-DeepSpeed on Intel XPU posts/auroragpt/checkpoints: 💾 Converting Checkpoints posts/auroragpt/determinstic-flash-attn/deterministic-flash-attn: 🎰 Deterministic flash-attn posts/auroragpt/flash-attn-sunspot: 📸 flash-attn on Sunspot posts/auroragpt/long-sequences: 🚂 Loooooooong Sequence Lengths posts/auroragpt/mpi4py-reproducer: 🐛 mpi4py bug on Sunspot posts/auroragpt/spike-skipper: 🏔️ Spike Skipper posts/auroragpt/startup-times: 🐢 Starting Up Distributed Training on Aurora posts/auroragpt/startup-times: ## 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🎉 Happy New Year!

A New Year update summarizing ongoing projects including AuroraGPT, AERIS, and other involvements at Argonne.

I’d like to try and post more this year.

Ideally these would be less-polished, more-frequent updates on what I’m thinking about / working on.

Ongoing Projects

  • AuroraGPT: Large Language Models for Scientific Applications on leadership-class supercomputers1.
    Additional details can be found in some of my recent talks:
  • AERIS: Argonne Earth Systems Model for Reliable and Skillful Predictions (Hatanpää et al. (2025)).
    Foundation models for Earth system science, pushing on coupled modeling, uncertainty, and long-horizon prediction.
    Additional details can be found in some of my recent talks:
  • 🍋 ezpz: A growing collection of utilities for launching, instrumenting, and debugging distributed jobs on real HPC systems.
    This started as glue code and turned into infrastructure. A dedicated post is coming.
  • Genesis Project
    • The American Science Cloud (AmSC): A Platform for Transformative Science

      AmSC

      The American Science Cloud (AmSC) is a Platform for Transformative Science that empowers scientists, engineers, and researchers to harness the power of AI, data, and computing to advance science, engineering, and energy missions.

    • The Transformational AI Models Consortium (ModCon): Cornerstone of the Genesis Mission’s AI models and data efforts.

      ModCon

      Cornerstone of the Genesis Mission’s AI models and data efforts, will build and deploy self-improving AI models that advance science, engineering, and energy missions by harnessing DOE’s unique data, facilities, and expertise. Selected teams will develop foundational capabilities needed across multiple scientific and engineering domains.

Additional Involvements

  • DeepSpeed Technical Steering Committee2

    More info The DeepSpeed Technical Steering Committee (TSC) is responsible for guiding the overall direction and development of the DeepSpeed project.

  • CPSC: Member of the Coordinating Panel for Software and Computing.

    More info

    The Coordinating Panel for Software and Computing (CPSC) serves as a forum for the U.S. high energy physics (HEP) community to address shared challenges in scientific computing.

    Hosted by the Division of Particles and Fields (DPF) of the American Physical Society(APS), the panel brings together researchers, developers, institutions, and industry partners to strengthen the software and computing ecosystem that underpins modern HEP research. Through coordination, advocacy, and community-building, CPSC works to foster innovation, support career development, and ensure the computing infrastructure evolves to meet the demands of current and future experiments.

Hatanpää, Väinö, Eugene Ku, Jason Stock, et al. 2025. AERIS: Argonne Earth Systems Model for Reliable and Skillful Predictions. https://arxiv.org/abs/2509.13523.

Footnotes

  1. More on this soon! ↩

  2. Roadmap discussion ↩

 samf.sh / posts / 2026 / 01 / 07 · Top 1:1