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# Pad the tensor pad = (0, 1, 0, 1) x = F.pad(x, pad, mode="constant", value=0) batch_size, channels, frames, height, width = x.shape # (batch_size, channels, frames, height, width) -> (batch_size, frames, channels, height, width) -> (batch_size * frames, channels, height, width) ...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/downsampling.py
class GatedSelfAttentionDense(nn.Module): r""" A gated self-attention dense layer that combines visual features and object features. Parameters: query_dim (`int`): The number of channels in the query. context_dim (`int`): The number of channels in the context. n_heads (`int`): The n...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
self.register_parameter("alpha_attn", nn.Parameter(torch.tensor(0.0))) self.register_parameter("alpha_dense", nn.Parameter(torch.tensor(0.0))) self.enabled = True def forward(self, x: torch.Tensor, objs: torch.Tensor) -> torch.Tensor: if not self.enabled: return x n_vi...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
class JointTransformerBlock(nn.Module): r""" A Transformer block following the MMDiT architecture, introduced in Stable Diffusion 3. Reference: https://arxiv.org/abs/2403.03206 Parameters: dim (`int`): The number of channels in the input and output. num_attention_heads (`int`): The num...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
self.use_dual_attention = use_dual_attention self.context_pre_only = context_pre_only context_norm_type = "ada_norm_continous" if context_pre_only else "ada_norm_zero" if use_dual_attention: self.norm1 = SD35AdaLayerNormZeroX(dim) else: self.norm1 = AdaLayerNormZ...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
if hasattr(F, "scaled_dot_product_attention"): processor = JointAttnProcessor2_0() else: raise ValueError( "The current PyTorch version does not support the `scaled_dot_product_attention` function." ) self.attn = Attention( query_dim=dim, ...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
if use_dual_attention: self.attn2 = Attention( query_dim=dim, cross_attention_dim=None, dim_head=attention_head_dim, heads=num_attention_heads, out_dim=dim, bias=True, processor=processor, ...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
# Copied from diffusers.models.attention.BasicTransformerBlock.set_chunk_feed_forward def set_chunk_feed_forward(self, chunk_size: Optional[int], dim: int = 0): # Sets chunk feed-forward self._chunk_size = chunk_size self._chunk_dim = dim def forward( self, hidden_states...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
if self.context_pre_only: norm_encoder_hidden_states = self.norm1_context(encoder_hidden_states, temb) else: norm_encoder_hidden_states, c_gate_msa, c_shift_mlp, c_scale_mlp, c_gate_mlp = self.norm1_context( encoder_hidden_states, emb=temb ) # Attenti...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
norm_hidden_states = self.norm2(hidden_states) norm_hidden_states = norm_hidden_states * (1 + scale_mlp[:, None]) + shift_mlp[:, None] if self._chunk_size is not None: # "feed_forward_chunk_size" can be used to save memory ff_output = _chunked_feed_forward(self.ff, norm_hidden_st...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
norm_encoder_hidden_states = self.norm2_context(encoder_hidden_states) norm_encoder_hidden_states = norm_encoder_hidden_states * (1 + c_scale_mlp[:, None]) + c_shift_mlp[:, None] if self._chunk_size is not None: # "feed_forward_chunk_size" can be used to save memory ...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
class BasicTransformerBlock(nn.Module): r""" A basic Transformer block.
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Parameters: dim (`int`): The number of channels in the input and output. num_attention_heads (`int`): The number of heads to use for multi-head attention. attention_head_dim (`int`): The number of channels in each head. dropout (`float`, *optional*, defaults to 0.0): The dropout probabil...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
double_self_attention (`bool`, *optional*): Whether to use two self-attention layers. In this case no cross attention layers are used. upcast_attention (`bool`, *optional*): Whether to upcast the attention computation to float32. This is useful for mixed precision training. norm_...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
positional_embeddings (`str`, *optional*, defaults to `None`): The type of positional embeddings to apply to. num_positional_embeddings (`int`, *optional*, defaults to `None`): The maximum number of positional embeddings to apply. """
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def __init__( self, dim: int, num_attention_heads: int, attention_head_dim: int, dropout=0.0, cross_attention_dim: Optional[int] = None, activation_fn: str = "geglu", num_embeds_ada_norm: Optional[int] = None, attention_bias: bool = False, ...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
ff_inner_dim: Optional[int] = None, ff_bias: bool = True, attention_out_bias: bool = True, ): super().__init__() self.dim = dim self.num_attention_heads = num_attention_heads self.attention_head_dim = attention_head_dim self.dropout = dropout self.cros...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
# We keep these boolean flags for backward-compatibility. self.use_ada_layer_norm_zero = (num_embeds_ada_norm is not None) and norm_type == "ada_norm_zero" self.use_ada_layer_norm = (num_embeds_ada_norm is not None) and norm_type == "ada_norm" self.use_ada_layer_norm_single = norm_type == "ada_n...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
if positional_embeddings and (num_positional_embeddings is None): raise ValueError( "If `positional_embedding` type is defined, `num_positition_embeddings` must also be defined." ) if positional_embeddings == "sinusoidal": self.pos_embed = SinusoidalPositiona...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
# Define 3 blocks. Each block has its own normalization layer. # 1. Self-Attn if norm_type == "ada_norm": self.norm1 = AdaLayerNorm(dim, num_embeds_ada_norm) elif norm_type == "ada_norm_zero": self.norm1 = AdaLayerNormZero(dim, num_embeds_ada_norm) elif norm_type ...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
self.attn1 = Attention( query_dim=dim, heads=num_attention_heads, dim_head=attention_head_dim, dropout=dropout, bias=attention_bias, cross_attention_dim=cross_attention_dim if only_cross_attention else None, upcast_attention=upcast_atte...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
# 2. Cross-Attn if cross_attention_dim is not None or double_self_attention: # We currently only use AdaLayerNormZero for self attention where there will only be one attention block. # I.e. the number of returned modulation chunks from AdaLayerZero would not make sense if returned during...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
self.attn2 = Attention( query_dim=dim, cross_attention_dim=cross_attention_dim if not double_self_attention else None, heads=num_attention_heads, dim_head=attention_head_dim, dropout=dropout, bias=attention_bias, ...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
# 3. Feed-forward if norm_type == "ada_norm_continuous": self.norm3 = AdaLayerNormContinuous( dim, ada_norm_continous_conditioning_embedding_dim, norm_elementwise_affine, norm_eps, ada_norm_bias, "layer_n...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
# 5. Scale-shift for PixArt-Alpha. if norm_type == "ada_norm_single": self.scale_shift_table = nn.Parameter(torch.randn(6, dim) / dim**0.5) # let chunk size default to None self._chunk_size = None self._chunk_dim = 0 def set_chunk_feed_forward(self, chunk_size: Optional...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.Tensor] = None, encoder_hidden_states: Optional[torch.Tensor] = None, encoder_attention_mask: Optional[torch.Tensor] = None, timestep: Optional[torch.LongTensor] = None, cross_attention...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
if self.norm_type == "ada_norm": norm_hidden_states = self.norm1(hidden_states, timestep) elif self.norm_type == "ada_norm_zero": norm_hidden_states, gate_msa, shift_mlp, scale_mlp, gate_mlp = self.norm1( hidden_states, timestep, class_labels, hidden_dtype=hidden_states.d...
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raise ValueError("Incorrect norm used")
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if self.pos_embed is not None: norm_hidden_states = self.pos_embed(norm_hidden_states) # 1. Prepare GLIGEN inputs cross_attention_kwargs = cross_attention_kwargs.copy() if cross_attention_kwargs is not None else {} gligen_kwargs = cross_attention_kwargs.pop("gligen", None) ...
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# 1.2 GLIGEN Control if gligen_kwargs is not None: hidden_states = self.fuser(hidden_states, gligen_kwargs["objs"]) # 3. Cross-Attention if self.attn2 is not None: if self.norm_type == "ada_norm": norm_hidden_states = self.norm2(hidden_states, timestep) ...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
if self.pos_embed is not None and self.norm_type != "ada_norm_single": norm_hidden_states = self.pos_embed(norm_hidden_states) attn_output = self.attn2( norm_hidden_states, encoder_hidden_states=encoder_hidden_states, attention_mask=encoder_at...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
if self.norm_type == "ada_norm_single": norm_hidden_states = self.norm2(hidden_states) norm_hidden_states = norm_hidden_states * (1 + scale_mlp) + shift_mlp if self._chunk_size is not None: # "feed_forward_chunk_size" can be used to save memory ff_output = _chunk...
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class LuminaFeedForward(nn.Module): r""" A feed-forward layer. Parameters: hidden_size (`int`): The dimensionality of the hidden layers in the model. This parameter determines the width of the model's hidden representations. intermediate_size (`int`): The intermediat...
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def __init__( self, dim: int, inner_dim: int, multiple_of: Optional[int] = 256, ffn_dim_multiplier: Optional[float] = None, ): super().__init__() inner_dim = int(2 * inner_dim / 3) # custom hidden_size factor multiplier if ffn_dim_multiplier is...
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class TemporalBasicTransformerBlock(nn.Module): r""" A basic Transformer block for video like data. Parameters: dim (`int`): The number of channels in the input and output. time_mix_inner_dim (`int`): The number of channels for temporal attention. num_attention_heads (`int`): The nu...
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# Define 3 blocks. Each block has its own normalization layer. # 1. Self-Attn self.ff_in = FeedForward( dim, dim_out=time_mix_inner_dim, activation_fn="geglu", ) self.norm1 = nn.LayerNorm(time_mix_inner_dim) self.attn1 = Attention( ...
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# 2. Cross-Attn if cross_attention_dim is not None: # We currently only use AdaLayerNormZero for self attention where there will only be one attention block. # I.e. the number of returned modulation chunks from AdaLayerZero would not make sense if returned during # the second...
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# let chunk size default to None self._chunk_size = None self._chunk_dim = None def set_chunk_feed_forward(self, chunk_size: Optional[int], **kwargs): # Sets chunk feed-forward self._chunk_size = chunk_size # chunk dim should be hardcoded to 1 to have better speed vs. memory...
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hidden_states = hidden_states[None, :].reshape(batch_size, num_frames, seq_length, channels) hidden_states = hidden_states.permute(0, 2, 1, 3) hidden_states = hidden_states.reshape(batch_size * seq_length, num_frames, channels) residual = hidden_states hidden_states = self.norm_in(hidde...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
# 3. Cross-Attention if self.attn2 is not None: norm_hidden_states = self.norm2(hidden_states) attn_output = self.attn2(norm_hidden_states, encoder_hidden_states=encoder_hidden_states) hidden_states = attn_output + hidden_states # 4. Feed-forward norm_hidden_...
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class SkipFFTransformerBlock(nn.Module): def __init__( self, dim: int, num_attention_heads: int, attention_head_dim: int, kv_input_dim: int, kv_input_dim_proj_use_bias: bool, dropout=0.0, cross_attention_dim: Optional[int] = None, attention_bia...
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self.attn2 = Attention( query_dim=dim, cross_attention_dim=cross_attention_dim, heads=num_attention_heads, dim_head=attention_head_dim, dropout=dropout, bias=attention_bias, out_bias=attention_out_bias, ) def forward(self, ...
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attn_output = self.attn2( norm_hidden_states, encoder_hidden_states=encoder_hidden_states, **cross_attention_kwargs, ) hidden_states = attn_output + hidden_states return hidden_states
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class FreeNoiseTransformerBlock(nn.Module): r""" A FreeNoise Transformer block.
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Parameters: dim (`int`): The number of channels in the input and output. num_attention_heads (`int`): The number of heads to use for multi-head attention. attention_head_dim (`int`): The number of channels in each head. dropout (`float`, *optional*, de...
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Whether to use only cross-attention layers. In this case two cross attention layers are used. double_self_attention (`bool`, defaults to `False`): Whether to use two self-attention layers. In this case no cross attention layers are used. upcast_attention (`bool`, defaults to `False`): ...
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The type of attention to use. Can be `"default"` or `"gated"` or `"gated-text-image"`. positional_embeddings (`str`, *optional*): The type of positional embeddings to apply to. num_positional_embeddings (`int`, *optional*, defaults to `None`): The maximum number of positional emb...
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weighting_scheme (`str`, defaults to `"pyramid"`): The weighting scheme to use for weighting averaging of processed latent frames. As described in the Equation 9. of the [FreeNoise](https://arxiv.org/abs/2310.15169) paper, "pyramid" is the default setting used. """
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def __init__( self, dim: int, num_attention_heads: int, attention_head_dim: int, dropout: float = 0.0, cross_attention_dim: Optional[int] = None, activation_fn: str = "geglu", num_embeds_ada_norm: Optional[int] = None, attention_bias: bool = False,...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
self.num_attention_heads = num_attention_heads self.attention_head_dim = attention_head_dim self.dropout = dropout self.cross_attention_dim = cross_attention_dim self.activation_fn = activation_fn self.attention_bias = attention_bias self.double_self_attention = double_se...
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self.set_free_noise_properties(context_length, context_stride, weighting_scheme) # We keep these boolean flags for backward-compatibility. self.use_ada_layer_norm_zero = (num_embeds_ada_norm is not None) and norm_type == "ada_norm_zero" self.use_ada_layer_norm = (num_embeds_ada_norm is not None...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
if positional_embeddings and (num_positional_embeddings is None): raise ValueError( "If `positional_embedding` type is defined, `num_positition_embeddings` must also be defined." ) if positional_embeddings == "sinusoidal": self.pos_embed = SinusoidalPositiona...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
# 2. Cross-Attn if cross_attention_dim is not None or double_self_attention: self.norm2 = nn.LayerNorm(dim, norm_eps, norm_elementwise_affine) self.attn2 = Attention( query_dim=dim, cross_attention_dim=cross_attention_dim if not double_self_attention else...
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# let chunk size default to None self._chunk_size = None self._chunk_dim = 0 def _get_frame_indices(self, num_frames: int) -> List[Tuple[int, int]]: frame_indices = [] for i in range(0, num_frames - self.context_length + 1, self.context_stride): window_start = i ...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
elif weighting_scheme == "pyramid": if num_frames % 2 == 0: # num_frames = 4 => [1, 2, 2, 1] mid = num_frames // 2 weights = list(range(1, mid + 1)) weights = weights + weights[::-1] else: # num_frames = 5 => [1, 2, ...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
elif weighting_scheme == "delayed_reverse_sawtooth": if num_frames % 2 == 0: # num_frames = 4 => [0.01, 2, 2, 1] mid = num_frames // 2 weights = [0.01] * (mid - 1) + [mid] weights = weights + list(range(mid, 0, -1)) else: ...
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def set_chunk_feed_forward(self, chunk_size: Optional[int], dim: int = 0) -> None: # Sets chunk feed-forward self._chunk_size = chunk_size self._chunk_dim = dim def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.Tensor] = None, enc...
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num_frames = hidden_states.size(1) frame_indices = self._get_frame_indices(num_frames) frame_weights = self._get_frame_weights(self.context_length, self.weighting_scheme) frame_weights = torch.tensor(frame_weights, device=device, dtype=dtype).unsqueeze(0).unsqueeze(-1) is_last_frame_batc...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
num_times_accumulated = torch.zeros((1, num_frames, 1), device=device) accumulated_values = torch.zeros_like(hidden_states) for i, (frame_start, frame_end) in enumerate(frame_indices): # The reason for slicing here is to ensure that if (frame_end - frame_start) is to handle # ca...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
attn_output = self.attn1( norm_hidden_states, encoder_hidden_states=encoder_hidden_states if self.only_cross_attention else None, attention_mask=attention_mask, **cross_attention_kwargs, ) hidden_states_chunk = attn_output + hidden...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention.py
attn_output = self.attn2( norm_hidden_states, encoder_hidden_states=encoder_hidden_states, attention_mask=encoder_attention_mask, **cross_attention_kwargs, ) hidden_states_chunk = attn_output + hidden_states_...
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# TODO(aryan): Maybe this could be done in a better way. # # Previously, this was: # hidden_states = torch.where( # num_times_accumulated > 0, accumulated_values / num_times_accumulated, accumulated_values # ) # # The reasoning for the change here is `torch.whe...
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num_times_accumulated.split(self.context_length, dim=1), ) ], dim=1, ).to(dtype)
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# 3. Feed-forward norm_hidden_states = self.norm3(hidden_states) if self._chunk_size is not None: ff_output = _chunked_feed_forward(self.ff, norm_hidden_states, self._chunk_dim, self._chunk_size) else: ff_output = self.ff(norm_hidden_states) hidden_states = ff_o...
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class FeedForward(nn.Module): r""" A feed-forward layer. Parameters: dim (`int`): The number of channels in the input. dim_out (`int`, *optional*): The number of channels in the output. If not given, defaults to `dim`. mult (`int`, *optional*, defaults to 4): The multiplier to use f...
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def __init__( self, dim: int, dim_out: Optional[int] = None, mult: int = 4, dropout: float = 0.0, activation_fn: str = "geglu", final_dropout: bool = False, inner_dim=None, bias: bool = True, ): super().__init__() if inner_dim i...
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if activation_fn == "gelu": act_fn = GELU(dim, inner_dim, bias=bias) if activation_fn == "gelu-approximate": act_fn = GELU(dim, inner_dim, approximate="tanh", bias=bias) elif activation_fn == "geglu": act_fn = GEGLU(dim, inner_dim, bias=bias) elif activation_f...
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self.net = nn.ModuleList([]) # project in self.net.append(act_fn) # project dropout self.net.append(nn.Dropout(dropout)) # project out self.net.append(nn.Linear(inner_dim, dim_out, bias=bias)) # FF as used in Vision Transformer, MLP-Mixer, etc. have a final dropou...
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class Attention(nn.Module): r""" A cross attention layer.
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Parameters: query_dim (`int`): The number of channels in the query. cross_attention_dim (`int`, *optional*): The number of channels in the encoder_hidden_states. If not given, defaults to `query_dim`. heads (`int`, *optional*, defaults to 8): The number of he...
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Set to `True` for the query, key, and value linear layers to contain a bias parameter. upcast_attention (`bool`, *optional*, defaults to False): Set to `True` to upcast the attention computation to `float32`. upcast_softmax (`bool`, *optional*, defaults to False): Set to `True` t...
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The number of groups to use for the group norm in the attention. spatial_norm_dim (`int`, *optional*, defaults to `None`): The number of channels to use for the spatial normalization. out_bias (`bool`, *optional*, defaults to `True`): Set to `True` to use a bias in the output lin...
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A factor to rescale the output by dividing it with this value. residual_connection (`bool`, *optional*, defaults to `False`): Set to `True` to add the residual connection to the output. _from_deprecated_attn_block (`bool`, *optional*, defaults to `False`): Set to `True` if the at...
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def __init__( self, query_dim: int, cross_attention_dim: Optional[int] = None, heads: int = 8, kv_heads: Optional[int] = None, dim_head: int = 64, dropout: float = 0.0, bias: bool = False, upcast_attention: bool = False, upcast_softmax: boo...
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out_context_dim: int = None, context_pre_only=None, pre_only=False, elementwise_affine: bool = True, is_causal: bool = False, ): super().__init__()
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# To prevent circular import. from .normalization import FP32LayerNorm, LpNorm, RMSNorm
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention_processor.py
self.inner_dim = out_dim if out_dim is not None else dim_head * heads self.inner_kv_dim = self.inner_dim if kv_heads is None else dim_head * kv_heads self.query_dim = query_dim self.use_bias = bias self.is_cross_attention = cross_attention_dim is not None self.cross_attention_dim...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention_processor.py
# we make use of this private variable to know whether this class is loaded # with an deprecated state dict so that we can convert it on the fly self._from_deprecated_attn_block = _from_deprecated_attn_block self.scale_qk = scale_qk self.scale = dim_head**-0.5 if self.scale_qk else 1.0 ...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention_processor.py
if self.added_kv_proj_dim is None and self.only_cross_attention: raise ValueError( "`only_cross_attention` can only be set to True if `added_kv_proj_dim` is not None. Make sure to set either `only_cross_attention=False` or define `added_kv_proj_dim`." ) if norm_num_group...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention_processor.py
if qk_norm is None: self.norm_q = None self.norm_k = None elif qk_norm == "layer_norm": self.norm_q = nn.LayerNorm(dim_head, eps=eps, elementwise_affine=elementwise_affine) self.norm_k = nn.LayerNorm(dim_head, eps=eps, elementwise_affine=elementwise_affine) ...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention_processor.py
# LTX applies qk norm across all heads self.norm_q = RMSNorm(dim_head * heads, eps=eps) self.norm_k = RMSNorm(dim_head * kv_heads, eps=eps) elif qk_norm == "l2": self.norm_q = LpNorm(p=2, dim=-1, eps=eps) self.norm_k = LpNorm(p=2, dim=-1, eps=eps) else: ...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention_processor.py
if cross_attention_norm is None: self.norm_cross = None elif cross_attention_norm == "layer_norm": self.norm_cross = nn.LayerNorm(self.cross_attention_dim) elif cross_attention_norm == "group_norm": if self.added_kv_proj_dim is not None: # The given `e...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention_processor.py
self.norm_cross = nn.GroupNorm( num_channels=norm_cross_num_channels, num_groups=cross_attention_norm_num_groups, eps=1e-5, affine=True ) else: raise ValueError( f"unknown cross_attention_norm: {cross_attention_norm}. Should be None, 'layer_norm' or 'group...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention_processor.py
self.added_proj_bias = added_proj_bias if self.added_kv_proj_dim is not None: self.add_k_proj = nn.Linear(added_kv_proj_dim, self.inner_kv_dim, bias=added_proj_bias) self.add_v_proj = nn.Linear(added_kv_proj_dim, self.inner_kv_dim, bias=added_proj_bias) if self.context_pre_on...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention_processor.py
if self.context_pre_only is not None and not self.context_pre_only: self.to_add_out = nn.Linear(self.inner_dim, self.out_context_dim, bias=out_bias) else: self.to_add_out = None if qk_norm is not None and added_kv_proj_dim is not None: if qk_norm == "fp32_layer_norm"...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention_processor.py
# set attention processor # We use the AttnProcessor2_0 by default when torch 2.x is used which uses # torch.nn.functional.scaled_dot_product_attention for native Flash/memory_efficient_attention # but only if it has the default `scale` argument. TODO remove scale_qk check when we move to torch ...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention_processor.py
Args: use_xla_flash_attention (`bool`): Whether to use pallas flash attention kernel from `torch_xla` or not. partition_spec (`Tuple[]`, *optional*): Specify the partition specification if using SPMD. Otherwise None. """ if use_xla_flash_attention:...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention_processor.py
AttnProcessor2_0() if hasattr(F, "scaled_dot_product_attention") and self.scale_qk else AttnProcessor() ) self.set_processor(processor)
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention_processor.py
def set_use_npu_flash_attention(self, use_npu_flash_attention: bool) -> None: r""" Set whether to use npu flash attention from `torch_npu` or not. """ if use_npu_flash_attention: processor = AttnProcessorNPU() else: # set attention processor #...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention_processor.py
def set_use_memory_efficient_attention_xformers( self, use_memory_efficient_attention_xformers: bool, attention_op: Optional[Callable] = None ) -> None: r""" Set whether to use memory efficient attention from `xformers` or not.
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Args: use_memory_efficient_attention_xformers (`bool`): Whether to use memory efficient attention from `xformers` or not. attention_op (`Callable`, *optional*): The attention operation to use. Defaults to `None` which uses the default attention operation from ...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention_processor.py
(IPAdapterAttnProcessor, IPAdapterAttnProcessor2_0, IPAdapterXFormersAttnProcessor), ) is_joint_processor = hasattr(self, "processor") and isinstance( self.processor, ( JointAttnProcessor2_0, XFormersJointAttnProcessor, ), )
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention_processor.py
if use_memory_efficient_attention_xformers: if is_added_kv_processor and is_custom_diffusion: raise NotImplementedError( f"Memory efficient attention is currently not supported for custom diffusion for attention processor type {self.processor}" ) ...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention_processor.py
# Make sure we can run the memory efficient attention _ = xformers.ops.memory_efficient_attention( torch.randn((1, 2, 40), device="cuda"), torch.randn((1, 2, 40), device="cuda"), torch.randn((1, 2, 40), device="cuda"), ...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention_processor.py
if is_custom_diffusion: processor = CustomDiffusionXFormersAttnProcessor( train_kv=self.processor.train_kv, train_q_out=self.processor.train_q_out, hidden_size=self.processor.hidden_size, cross_attention_dim=self.processor.c...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention_processor.py
"Memory efficient attention with `xformers` might currently not work correctly if an attention mask is required for the attention operation." ) processor = XFormersAttnAddedKVProcessor(attention_op=attention_op) elif is_ip_adapter: processor = IPAdapterXFormer...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention_processor.py
processor = XFormersJointAttnProcessor(attention_op=attention_op) else: processor = XFormersAttnProcessor(attention_op=attention_op) else: if is_custom_diffusion: attn_processor_class = ( CustomDiffusionAttnProcessor2_0 ...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention_processor.py
elif is_ip_adapter: processor = IPAdapterAttnProcessor2_0( hidden_size=self.processor.hidden_size, cross_attention_dim=self.processor.cross_attention_dim, num_tokens=self.processor.num_tokens, scale=self.processor.scale, ...
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/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/attention_processor.py
# but only if it has the default `scale` argument. TODO remove scale_qk check when we move to torch 2.1 processor = ( AttnProcessor2_0() if hasattr(F, "scaled_dot_product_attention") and self.scale_qk else AttnProcessor() )
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self.set_processor(processor) def set_attention_slice(self, slice_size: int) -> None: r""" Set the slice size for attention computation. Args: slice_size (`int`): The slice size for attention computation. """ if slice_size is not None and slice_s...
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