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Only enable fp16 on z image models that actually support it. (#12065)

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comfyanonymous
2026-01-24 19:32:28 -08:00
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parent ed6002cb60
commit 635406e283
3 changed files with 6 additions and 1 deletions
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4
comfy/model_detection.py
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@@ -444,6 +444,10 @@ def detect_unet_config(state_dict, key_prefix, metadata=None):
dit_config["ffn_dim_multiplier"] = (8.0 / 3.0)
dit_config["z_image_modulation"] = True
dit_config["time_scale"] = 1000.0
try:
dit_config["allow_fp16"] = torch.std(state_dict['{}layers.{}.ffn_norm1.weight'.format(key_prefix, dit_config["n_layers"] - 2)], unbiased=False).item() < 0.42
except Exception:
pass
if '{}cap_pad_token'.format(key_prefix) in state_dict_keys:
dit_config["pad_tokens_multiple"] = 32
sig_weight = state_dict.get('{}siglip_embedder.0.weight'.format(key_prefix), None)