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better AMD CDNA4 and RDNA4 support

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Apophis 2026-04-16 03:38:40 +08:00
parent 1de83f91c3
commit 693ce0a1b2
2 changed files with 2 additions and 2 deletions
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2
comfy/model_management.py
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@ -1446,7 +1446,7 @@ def pytorch_attention_enabled():
return ENABLE_PYTORCH_ATTENTION
def pytorch_attention_enabled_vae():
if is_amd():
if is_amd() and not SUPPORT_FP8_OPS: # exclude RDNA4 (gfx1200, gfx1201) and CDNA4 (gfx950) that support fp8
return False # enabling pytorch attention on AMD currently causes crash when doing high res
return pytorch_attention_enabled()

2
comfy/sd.py
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@ -440,7 +440,7 @@ class VAE:
if 'decoder.up_blocks.0.resnets.0.norm1.weight' in sd.keys(): #diffusers format
sd = diffusers_convert.convert_vae_state_dict(sd)
if model_management.is_amd():
if model_management.is_amd() and not model_management.SUPPORT_FP8_OPS: # exclude RDNA4 (gfx1200, gfx1201) and CDNA4 (gfx950) that support fp8
VAE_KL_MEM_RATIO = 2.73
else:
VAE_KL_MEM_RATIO = 1.0