~/talk

Efficient MoE Pre-training at Scale on AMD GPUs With TorchTitan

Talkat PyTorch Conference 2025 · 2025-10-22..10-23· [machine-learning]
name:Liz Li
links:none on file
links:none on file
links:none on file
slides:none on file

Claims an end-to-end PyTorch pipeline (TorchTitan + Primus Turbo) that uses FP8 blockwise quantization and grouped GEMM via torch._scaled_mm plus a custom Triton kernel removes CPU–GPU sync to speed the forward pass ~3x, get ~2x from FP8 GEMM and up to 277% with FP8 grouped GEMM, and run DeepSeek-R1 and LLaMA4 pretraining on AMD MI300X hardware. Demonstrates near-linear strong scaling to 1,000+ MI300X GPUs on Tensorwave, with code and kernels open-sourced.

AI-written summary · about

  1. 0:00TorchTitan and AMD GPUs
  2. 1:25TorchTitan MoE overview
  3. 3:55MoE pre-training challenges
  4. 6:02AMD GPU training benefits
  5. 8:10Parallel scaling strategy
  6. 8:54Primus Turbo library
  7. 11:23Primus Turbo optimizations
  8. 14:12DeepSeek V3 scaling results
  9. 16:23Training accuracy validation
  10. 17:06Conclusion and future plans
  11. 18:56Q&A
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