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Fix pred_depth in V-JEPA 2.1 ViT-L configs to match released checkpoint#150

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Fix pred_depth in V-JEPA 2.1 ViT-L configs to match released checkpoint#150
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@claasdeboer claasdeboer commented Apr 10, 2026

The released ViT-L checkpoint (vjepa2_1_vitl_dist_vitG_384.pt) has 12 predictor blocks, matching the distillation protocol described in the paper: "we retrain a new predictor, which has 12 blocks (instead of 24 for pretraining)". The ViT-B config already correctly specifies pred_depth: 12. See #149

With pred_depth: 24, loading the checkpoint results in a silent partial load where blocks 0-11 are loaded but blocks 12-23 remain randomly initialized (strict=False).

The released ViT-L checkpoint (vjepa2_1_vitl_dist_vitG_384.pt) has 12
predictor blocks, matching the distillation protocol described in the
paper: "we retrain a new predictor, which has 12 blocks (instead of 24
for pretraining)". The ViT-B config already correctly specifies
pred_depth: 12.

With pred_depth: 24, loading the checkpoint results in a silent partial
load where blocks 0-11 are loaded but blocks 12-23 remain randomly
initialized (strict=False).
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@claasdeboer claasdeboer changed the title Fix pred_depth in V-JEPA 2.1 ViT-L configs to match released checkpoint (#149) Fix pred_depth in V-JEPA 2.1 ViT-L configs to match released checkpoint Apr 10, 2026
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@meta-cla meta-cla Bot added the CLA Signed This label is managed by the Meta Open Source bot. label Apr 10, 2026
cagataycali pushed a commit to cagataycali/vjepa2 that referenced this pull request May 17, 2026
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