Fix typo on run_name for 4xv4-128#6
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rwitten
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Apr 22, 2023
A9isha
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Apr 11, 2024
* Add dev composer environment * Upgrade image version to fix vulnerability * Update the env to the latest one to address vulnerability * Add helper function to manage the schedule * Update helper function to variable
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geeningwang
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Apr 17, 2026
- Switch benchmark checkpoint to mimo-v2-flash-fixed-ocdbt (scan_layers=false); scan_layers=true is broken for MIMO_V2_FLASH (missing layer_idx in scan branch) - Add 2026-04-17 result: commit 1a6b957, ~575 tok/s / 55.7 ms (cold GCS cache) - Retire stale scan_layers=true reference results (f42416a, 2ae1dc4) to footnote - Add perf table row AI-Hypercomputer#6 for today's run; update next-steps to prioritise the scan_layers=true fix before further sparse-dispatch work
geeningwang
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Apr 17, 2026
- Benchmark history: add row AI-Hypercomputer#7 (scan=true, 71.1 ms / 450 tok/s, +28% vs AI-Hypercomputer#6) - Add 'scan_layers=true Analysis' section explaining the 15.4 ms overhead: root cause is loss of XLA inter-layer weight-prefetch pipelining (lax.while_loop prevents cross-iteration scheduling); ~0.32 ms/layer consistent with memory-bandwidth-bound workload losing prefetch overlap - Quantify sparse dispatch break-even bar: must recover >22% to beat 55.7 ms dense baseline; rough estimate ~34 ms achievable with ragged_all_to_all - Update 'Most Impactful Next Fixes' section: scan fix done, ragged_all_to_all is now AI-Hypercomputer#1 priority; update HEAD ref to 539cc04 - Re-rank optimisation table: ragged_all_to_all moved to rank 2 (highest unrun), scan_layers=true added as rank 3 (done, prerequisite)
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