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bf16 manual cast works on old AMD.

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comfyanonymous 2025-02-17 04:42:40 -05:00
parent 530412cb9d
commit 8c0bae50c3
1 changed files with 2 additions and 0 deletions
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comfy/model_management.py
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@ -1111,6 +1111,8 @@ def should_use_bf16(device=None, model_params=0, prioritize_performance=True, ma
if is_amd(): if is_amd():
arch = torch.cuda.get_device_properties(device).gcnArchName arch = torch.cuda.get_device_properties(device).gcnArchName
if arch in ["gfx1030", "gfx1031", "gfx1010", "gfx1011", "gfx1012", "gfx906", "gfx900", "gfx803"]: # RDNA2 and older don't support bf16 if arch in ["gfx1030", "gfx1031", "gfx1010", "gfx1011", "gfx1012", "gfx906", "gfx900", "gfx803"]: # RDNA2 and older don't support bf16
if manual_cast:
return True
return False return False
props = torch.cuda.get_device_properties(device) props = torch.cuda.get_device_properties(device)