---
license: other
---
# Archive: layer-selector-grid

EMA-consolidated research checkpoint archive.

Layer-selection grid: pinned per-source K/V norm on/off (lsel_pin), sel28 e/f/s arms, and the select28_bb noise/freeze cells (n0f0, n0f1, n1e28, n1f0, n1f1, n1unif). Verdict: the selector objective is flat -- 6 inits reach ~chance with different maps at identical loss; fixed first-28 is the shipped configuration.

Each `*.shards.stepNNNNNN/state.pt` holds only the EMA payload (`state['extra']['ema']`, fp32, clean names) extracted from the original training checkpoint, fingerprint-verified against `engine_meta.pt`. Loadable directly by `methods/lafm/vla_flow_ft.py:load_pretrain_trainables` with `init_use_ema=true`. Optimizer states were not retained.

## Manifest

```json
[
  {
    "run": "lafm_vla_flow_neo2b_lsel_pin_normoff_20260820_083159",
    "step_dir": "lafm_vla_flow_neo2b_lsel_pin_normoff_weights.ckpt.shards.step000007500",
    "source": "ema",
    "bytes": 1774692610
  },
  {
    "run": "lafm_vla_flow_neo2b_lsel_pin_normoff_20260820_083159",
    "step_dir": "lafm_vla_flow_neo2b_lsel_pin_normoff_weights.ckpt.shards.step000010000",
    "source": "ema",
    "bytes": 1774692610
  },
  {
    "run": "lafm_vla_flow_neo2b_lsel_pin_normoff_20260820_103115",
    "step_dir": "lafm_vla_flow_neo2b_lsel_pin_normoff_weights.ckpt.shards.step000002500",
    "source": "ema",
    "bytes": 1774692610
  },
  {
    "run": "lafm_vla_flow_neo2b_lsel_pin_normoff_20260820_103115",
    "step_dir": "lafm_vla_flow_neo2b_lsel_pin_normoff_weights.ckpt.shards.step000005000",
    "source": "ema",
    "bytes": 1774692610
  },
  {
    "run": "lafm_vla_flow_neo2b_lsel_pin_normoff_20260820_103115",
    "step_dir": "lafm_vla_flow_neo2b_lsel_pin_normoff_weights.ckpt.shards.step000007500",
    "source": "ema",
    "bytes": 1774692610
  },
  {
    "run": "lafm_vla_flow_neo2b_lsel_pin_normoff_20260820_103115",
    "step_dir": "lafm_vla_flow_neo2b_lsel_pin_normoff_weights.ckpt.shards.step000010000",
    "source": "ema",
    "bytes": 1774692610
  },
  {
    "run": "lafm_vla_flow_neo2b_lsel_pin_normon_20260820_083202",
    "step_dir": "lafm_vla_flow_neo2b_lsel_pin_normon_weights.ckpt.shards.step000007500",
    "source": "ema",
    "bytes": 1774692610
  },
  {
    "run": "lafm_vla_flow_neo2b_lsel_pin_normon_20260820_083202",
    "step_dir": "lafm_vla_flow_neo2b_lsel_pin_normon_weights.ckpt.shards.step000010000",
    "source": "ema",
    "bytes": 1774692610
  },
  {
    "run": "lafm_vla_flow_neo2b_lsel_pin_normon_20260820_103116",
    "step_dir": "lafm_vla_flow_neo2b_lsel_pin_normon_weights.ckpt.shards.step000002500",
    "source": "ema",
    "bytes": 1774692610
  },
  {
    "run": "lafm_vla_flow_neo2b_lsel_pin_normon_20260820_103116",
    "step_dir": "lafm_vla_flow_neo2b_lsel_pin_normon_weights.ckpt.shards.step000005000",
    "source": "ema",
    "bytes": 1774692610
  },
  {
    "run": "lafm_vla_flow_neo2b_lsel_pin_normon_20260820_103116",
    "step_dir": "lafm_vla_flow_neo2b_lsel_pin_normon_weights.ckpt.shards.step000007500",
    "source": "ema",
    "bytes": 1774692610
  },
  {
    "run": "lafm_vla_flow_neo2b_lsel_pin_normon_20260820_103116",
    "step_dir": "lafm_vla_flow_neo2b_lsel_pin_normon_weights.ckpt.shards.step000010000",
    "source": "ema",
    "bytes": 1774692610
  },
  {
    "run": "lafm_vla_flow_neo2b_sel28e_20260820_2304",
    "step_dir": "lafm_vla_flow_neo2b_select28_bb_weights.ckpt.shards.step000005000",
    "source": "ema",
    "bytes": 1774692230
  },
  {
    "run": "lafm_vla_flow_neo2b_sel28e_20260820_2304",
    "step_dir": "lafm_vla_flow_neo2b_select28_bb_weights.ckpt.shards.step000010000",
    "source": "ema",
    "bytes": 1774692230
  },
  {
    "run": "lafm_vla_flow_neo2b_sel28f_20260820_2302",
    "step_dir": "lafm_vla_flow_neo2b_select28_bb_weights.ckpt.shards.step000015000",
    "source": "ema",
    "bytes": 1774692230
  },
  {
    "run": "lafm_vla_flow_neo2b_sel28f_20260820_2302",
    "step_dir": "lafm_vla_flow_neo2b_select28_bb_weights.ckpt.shards.step000020000",
    "source": "ema",
    "bytes": 1774692230
  },
  {
    "run": "lafm_vla_flow_neo2b_sel28s_sel28s_20260820_212754",
    "step_dir": "lafm_vla_flow_neo2b_select28_bb_weights.ckpt.shards.step000025000",
    "source": "ema",
    "bytes": 1774692294
  },
  {
    "run": "lafm_vla_flow_neo2b_sel28s_sel28s_20260820_212754",
    "step_dir": "lafm_vla_flow_neo2b_select28_bb_weights.ckpt.shards.step000030000",
    "source": "ema",
    "bytes": 1774692294
  },
  {
    "run": "lafm_vla_flow_neo2b_select28_bb_n0f0_20260820_170001",
    "step_dir": "lafm_vla_flow_neo2b_select28_bb_weights.ckpt.shards.step000005000",
    "source": "ema",
    "bytes": 1774692294
  },
  {
    "run": "lafm_vla_flow_neo2b_select28_bb_n0f0_20260820_170001",
    "step_dir": "lafm_vla_flow_neo2b_select28_bb_weights.ckpt.shards.step000006000",
    "source": "ema",
    "bytes": 1774692294
  },
  {
    "run": "lafm_vla_flow_neo2b_select28_bb_n0f1_20260820_165958",
    "step_dir": "lafm_vla_flow_neo2b_select28_bb_weights.ckpt.shards.step000005000",
    "source": "ema",
    "bytes": 1774692294
  },
  {
    "run": "lafm_vla_flow_neo2b_select28_bb_n0f1_20260820_165958",
    "step_dir": "lafm_vla_flow_neo2b_select28_bb_weights.ckpt.shards.step000006000",
    "source": "ema",
    "bytes": 1774692294
  },
  {
    "run": "lafm_vla_flow_neo2b_select28_bb_n1e28_20260820_170003",
    "step_dir": "lafm_vla_flow_neo2b_select28_bb_weights.ckpt.shards.step000005000",
    "source": "ema",
    "bytes": 1774692294
  },
  {
    "run": "lafm_vla_flow_neo2b_select28_bb_n1e28_20260820_170003",
    "step_dir": "lafm_vla_flow_neo2b_select28_bb_weights.ckpt.shards.step000006000",
    "source": "ema",
    "bytes": 1774692294
  },
  {
    "run": "lafm_vla_flow_neo2b_select28_bb_n1f0_20260820_170000",
    "step_dir": "lafm_vla_flow_neo2b_select28_bb_weights.ckpt.shards.step000005000",
    "source": "ema",
    "bytes": 1774692294
  },
  {
    "run": "lafm_vla_flow_neo2b_select28_bb_n1f0_20260820_170000",
    "step_dir": "lafm_vla_flow_neo2b_select28_bb_weights.ckpt.shards.step000006000",
    "source": "ema",
    "bytes": 1774692294
  },
  {
    "run": "lafm_vla_flow_neo2b_select28_bb_n1f1_20260820_165956",
    "step_dir": "lafm_vla_flow_neo2b_select28_bb_weights.ckpt.shards.step000005000",
    "source": "ema",
    "bytes": 1774692294
  },
  {
    "run": "lafm_vla_flow_neo2b_select28_bb_n1f1_20260820_165956",
    "step_dir": "lafm_vla_flow_neo2b_select28_bb_weights.ckpt.shards.step000006000",
    "source": "ema",
    "bytes": 1774692294
  },
  {
    "run": "lafm_vla_flow_neo2b_select28_bb_n1unif_20260820_170005",
    "step_dir": "lafm_vla_flow_neo2b_select28_bb_weights.ckpt.shards.step000005000",
    "source": "ema",
    "bytes": 1774692294
  },
  {
    "run": "lafm_vla_flow_neo2b_select28_bb_n1unif_20260820_170005",
    "step_dir": "lafm_vla_flow_neo2b_select28_bb_weights.ckpt.shards.step000006000",
    "source": "ema",
    "bytes": 1774692294
  }
]
```