Add MergedTop3_v3 clean 8xH100 record-track submission

records/track_10min_16mb/2026-03-25_MergedTop3_v3_clean_h100/README.md

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+# MergedTop3_v3 clean H100 rerun
+
+This folder contains a clean single-seed `track_10min_16mb` submission based on a merged top-stack recipe:
+
+- 11 layers
+- XSA on the last 4 layers
+- EMA
+- 3x MLP
+- SmearGate
+- BigramHash with 2048 buckets
+- mixed int6 quantization with zstd
+- sequence length 2048
+- Muon/AdamW weight decay 0.04
+- sliding-window eval with stride 64
+- Partial RoPE with `ROPE_DIMS=16`
+- layerwise LN scaling
+- GPTQ-lite clip search
+- `WARMDOWN_ITERS=3500`
+
+## Clean run result
+
+Fresh uninterrupted `8x H100` run completed on 2026-03-25 with:
+
+- `step_stop=5347`
+- `train_time=580.213s`
+- `final_int6_roundtrip_exact val_loss=1.96565872`
+- `final_int6_roundtrip_exact val_bpb=1.16417381`
+- `eval_time=44.398s`
+- `bytes_model_int6_zstd=15,562,277`
+- `bytes_code=72,924`
+- `bytes_total=15,635,201`
+
+This run stayed under both required caps:
+
+- training time `< 600s`
+- evaluation time `< 600s`
+- artifact size `< 16,000,000`
+
+## Files
+
+- `train_gpt.py`
+- `README.md`
+- `submission.json`
+- `train_seed1337.log`
+- `requirements.txt`
+
+## Notes
+
+- This is a clean single-seed run, not a multi-seed statistical record claim.
+- `train_seed1337.log` is the original remote run log recovered after the run.

records/track_10min_16mb/2026-03-25_MergedTop3_v3_clean_h100/requirements.txt

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+zstandard>=0.23.0

records/track_10min_16mb/2026-03-25_MergedTop3_v3_clean_h100/submission.json

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+{
+  "author": "Hael",
+  "github_id": "hesong0222-dev",
+  "name": "MergedTop3_v3 clean H100 rerun",
+  "blurb": "Fresh uninterrupted 8xH100 rerun of the merged top-stack recipe: March 20 backbone, March 21 Partial RoPE and LN scale, and March 22 GPTQ-lite clip search plus warmdown 3500. This records the clean single-seed run completed on March 25, 2026.",
+  "date": "2026-03-25T00:00:00Z",
+  "track": "track_10min_16mb",
+  "val_loss": 1.96565872,
+  "val_bpb": 1.16417381,
+  "step_stop": 5347,
+  "wallclock_seconds": 580.213,
+  "eval_time_seconds": 44.398,
+  "bytes_total": 15635201,
+  "bytes_model_int6_zstd": 15562277,
+  "bytes_code": 72924
+}