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Refactor attention

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This commit is contained in:
Sergey Borisov 2023-09-01 01:02:47 +03:00
parent 6bb657b3f3
commit edc8f5fb6f
1 changed files with 24 additions and 38 deletions
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62
invokeai/backend/stable_diffusion/diffusers_pipeline.py
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@ -224,7 +224,6 @@ class StableDiffusionGeneratorPipeline:
fn_recursive_set_mem_eff(module)
def set_attention_slice(self, module: torch.nn.Module, slice_size: Optional[int]):
if hasattr(module, "set_attention_slice"):
module.set_attention_slice(slice_size)
@ -236,57 +235,44 @@ class StableDiffusionGeneratorPipeline:
config = InvokeAIAppConfig.get_config()
if config.attention_type == "xformers":
self.set_use_memory_efficient_attention_xformers(model, True)
return
elif config.attention_type == "sliced":
slice_size = config.attention_slice_size
if slice_size == "auto":
slice_size = auto_detect_slice_size(latents)
elif slice_size == "balanced":
if slice_size == "balanced":
slice_size = "auto"
self.set_attention_slice(model, slice_size=slice_size)
return
elif config.attention_type == "normal":
self.set_attention_slice(model, slice_size=None)
return
elif config.attention_type == "torch-sdp":
if not hasattr(torch.nn.functional, "scaled_dot_product_attention"):
raise Exception("torch-sdp requires PyTorch 2.0, to use it, please upgrade PyTorch to 2.0.")
model.set_attn_processor(AttnProcessor2_0())
return
# the remainder if this code is called when attention_type=='auto'
if model.device.type == "cuda":
if is_xformers_available() and not config.disable_xformers:
self.set_use_memory_efficient_attention_xformers(model, True)
return
elif hasattr(torch.nn.functional, "scaled_dot_product_attention"):
model.set_attn_processor(AttnProcessor2_0())
return
else: # auto
if model.device.type == "cuda":
if is_xformers_available() and not config.disable_xformers:
self.set_use_memory_efficient_attention_xformers(model, True)
if model.device.type == "cpu" or model.device.type == "mps":
mem_free = psutil.virtual_memory().free
elif model.device.type == "cuda":
mem_free, _ = torch.cuda.mem_get_info(normalize_device(model.device))
else:
raise ValueError(f"unrecognized device {model.device}")
# input tensor of [1, 4, h/8, w/8]
# output tensor of [16, (h/8 * w/8), (h/8 * w/8)]
bytes_per_element_needed_for_baddbmm_duplication = latents.element_size() + 4
max_size_required_for_baddbmm = (
16
* latents.size(dim=2)
* latents.size(dim=3)
* latents.size(dim=2)
* latents.size(dim=3)
* bytes_per_element_needed_for_baddbmm_duplication
)
if max_size_required_for_baddbmm > (mem_free * 3.0 / 4.0): # 3.3 / 4.0 is from old Invoke code
self.set_attention_slice(model, slice_size="max")
elif torch.backends.mps.is_available():
# diffusers recommends always enabling for mps
self.set_attention_slice(model, slice_size="max")
else:
self.set_attention_slice(model, slice_size=None)
elif hasattr(torch.nn.functional, "scaled_dot_product_attention"):
model.set_attn_processor(AttnProcessor2_0())
else:
if model.device.type == "cpu" or model.device.type == "mps":
mem_free = psutil.virtual_memory().free
elif model.device.type == "cuda":
mem_free, _ = torch.cuda.mem_get_info(normalize_device(model.device))
else:
raise ValueError(f"unrecognized device {model.device}")
slice_size = auto_detect_slice_size(latents)
if slice_size == "balanced":
slice_size = "auto"
self.set_attention_slice(model, slice_size=slice_size)
def latents_from_embeddings(
self,