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Clean up the VAE dtypes code.

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comfyanonymous
2024-12-25 04:50:34 -05:00
parent 1ed75ab30e
commit 0229228f3f
2 changed files with 14 additions and 17 deletions
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27
comfy/model_management.py
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@@ -188,6 +188,12 @@ def is_nvidia():
return True
return False
def is_amd():
global cpu_state
if cpu_state == CPUState.GPU:
if torch.version.hip:
return True
return False
MIN_WEIGHT_MEMORY_RATIO = 0.4
if is_nvidia():
@@ -198,27 +204,17 @@ if args.use_pytorch_cross_attention:
ENABLE_PYTORCH_ATTENTION = True
XFORMERS_IS_AVAILABLE = False
VAE_DTYPES = [torch.float32]
try:
if is_nvidia():
if int(torch_version[0]) >= 2:
if ENABLE_PYTORCH_ATTENTION == False and args.use_split_cross_attention == False and args.use_quad_cross_attention == False:
ENABLE_PYTORCH_ATTENTION = True
if torch.cuda.is_bf16_supported() and torch.cuda.get_device_properties(torch.cuda.current_device()).major >= 8:
VAE_DTYPES = [torch.bfloat16] + VAE_DTYPES
if is_intel_xpu():
if args.use_split_cross_attention == False and args.use_quad_cross_attention == False:
ENABLE_PYTORCH_ATTENTION = True
except:
pass
if is_intel_xpu():
VAE_DTYPES = [torch.bfloat16] + VAE_DTYPES
if args.cpu_vae:
VAE_DTYPES = [torch.float32]
if ENABLE_PYTORCH_ATTENTION:
torch.backends.cuda.enable_math_sdp(True)
torch.backends.cuda.enable_flash_sdp(True)
@@ -754,7 +750,6 @@ def vae_offload_device():
return torch.device("cpu")
def vae_dtype(device=None, allowed_dtypes=[]):
global VAE_DTYPES
if args.fp16_vae:
return torch.float16
elif args.bf16_vae:
@@ -763,12 +758,14 @@ def vae_dtype(device=None, allowed_dtypes=[]):
return torch.float32
for d in allowed_dtypes:
if d == torch.float16 and should_use_fp16(device, prioritize_performance=False):
return d
if d in VAE_DTYPES:
if d == torch.float16 and should_use_fp16(device):
return d
return VAE_DTYPES[0]
# NOTE: bfloat16 seems to work on AMD for the VAE but is extremely slow in some cases compared to fp32
if d == torch.bfloat16 and (not is_amd()) and should_use_bf16(device):
return d
return torch.float32
def get_autocast_device(dev):
if hasattr(dev, 'type'):