Convert formatting to use ruff instead of yapf + isort (#26247)
Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>
This commit is contained in:
@@ -22,6 +22,7 @@
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Inference-only Qwen3 model compatible with HuggingFace weights."""
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from collections.abc import Iterable
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from typing import Any, Optional, Union
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@@ -35,8 +36,7 @@ from vllm.config import CacheConfig, VllmConfig
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from vllm.distributed import get_pp_group, get_tensor_model_parallel_world_size
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from vllm.logger import init_logger
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from vllm.model_executor.layers.layernorm import RMSNorm
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from vllm.model_executor.layers.linear import (QKVParallelLinear,
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RowParallelLinear)
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from vllm.model_executor.layers.linear import QKVParallelLinear, RowParallelLinear
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from vllm.model_executor.layers.logits_processor import LogitsProcessor
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from vllm.model_executor.layers.quantization import QuantizationConfig
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from vllm.model_executor.layers.rotary_embedding import get_rope
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@@ -46,14 +46,12 @@ from vllm.sequence import IntermediateTensors
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from .interfaces import SupportsEagle3, SupportsLoRA, SupportsPP
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from .qwen2 import Qwen2MLP as Qwen3MLP
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from .qwen2 import Qwen2Model
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from .utils import (AutoWeightsLoader, PPMissingLayer, extract_layer_index,
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maybe_prefix)
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from .utils import AutoWeightsLoader, PPMissingLayer, extract_layer_index, maybe_prefix
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logger = init_logger(__name__)
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class Qwen3Attention(nn.Module):
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def __init__(
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self,
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hidden_size: int,
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@@ -131,7 +129,9 @@ class Qwen3Attention(nn.Module):
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**{
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"layer_idx": extract_layer_index(prefix),
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"dual_chunk_attention_config": dual_chunk_attention_config,
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} if dual_chunk_attention_config else {},
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}
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if dual_chunk_attention_config
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else {},
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)
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self.q_norm = RMSNorm(self.head_dim, eps=rms_norm_eps)
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self.k_norm = RMSNorm(self.head_dim, eps=rms_norm_eps)
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@@ -144,12 +144,10 @@ class Qwen3Attention(nn.Module):
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qkv, _ = self.qkv_proj(hidden_states)
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q, k, v = qkv.split([self.q_size, self.kv_size, self.kv_size], dim=-1)
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# Add qk-norm
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q_by_head = q.view(*q.shape[:-1], q.shape[-1] // self.head_dim,
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self.head_dim)
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q_by_head = q.view(*q.shape[:-1], q.shape[-1] // self.head_dim, self.head_dim)
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q_by_head = self.q_norm(q_by_head)
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q = q_by_head.view(q.shape)
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k_by_head = k.view(*k.shape[:-1], k.shape[-1] // self.head_dim,
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self.head_dim)
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k_by_head = k.view(*k.shape[:-1], k.shape[-1] // self.head_dim, self.head_dim)
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k_by_head = self.k_norm(k_by_head)
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k = k_by_head.view(k.shape)
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q, k = self.rotary_emb(positions, q, k)
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@@ -159,7 +157,6 @@ class Qwen3Attention(nn.Module):
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class Qwen3DecoderLayer(nn.Module):
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def __init__(
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self,
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config: Qwen3Config,
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@@ -172,9 +169,9 @@ class Qwen3DecoderLayer(nn.Module):
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# Requires transformers > 4.32.0
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rope_theta = getattr(config, "rope_theta", 1000000)
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rope_scaling = getattr(config, "rope_scaling", None)
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dual_chunk_attention_config = getattr(config,
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"dual_chunk_attention_config",
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None)
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dual_chunk_attention_config = getattr(
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config, "dual_chunk_attention_config", None
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)
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# By default, Qwen3 uses causal attention as it is a decoder-only model.
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# You can override the HF config with `is_causal=False` to enable
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@@ -192,8 +189,8 @@ class Qwen3DecoderLayer(nn.Module):
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num_kv_heads=config.num_key_value_heads,
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rope_theta=rope_theta,
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rms_norm_eps=config.rms_norm_eps,
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qkv_bias=getattr(config, 'attention_bias', False),
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head_dim=getattr(config, 'head_dim', None),
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qkv_bias=getattr(config, "attention_bias", False),
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head_dim=getattr(config, "head_dim", None),
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cache_config=cache_config,
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quant_config=quant_config,
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rope_scaling=rope_scaling,
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@@ -208,10 +205,10 @@ class Qwen3DecoderLayer(nn.Module):
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quant_config=quant_config,
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prefix=f"{prefix}.mlp",
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)
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self.input_layernorm = RMSNorm(config.hidden_size,
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eps=config.rms_norm_eps)
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self.post_attention_layernorm = RMSNorm(config.hidden_size,
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eps=config.rms_norm_eps)
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self.input_layernorm = RMSNorm(config.hidden_size, eps=config.rms_norm_eps)
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self.post_attention_layernorm = RMSNorm(
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config.hidden_size, eps=config.rms_norm_eps
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)
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def forward(
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self,
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@@ -224,16 +221,14 @@ class Qwen3DecoderLayer(nn.Module):
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residual = hidden_states
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hidden_states = self.input_layernorm(hidden_states)
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else:
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hidden_states, residual = self.input_layernorm(
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hidden_states, residual)
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hidden_states, residual = self.input_layernorm(hidden_states, residual)
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hidden_states = self.self_attn(
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positions=positions,
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hidden_states=hidden_states,
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)
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# Fully Connected
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hidden_states, residual = self.post_attention_layernorm(
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hidden_states, residual)
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hidden_states, residual = self.post_attention_layernorm(hidden_states, residual)
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hidden_states = self.mlp(hidden_states)
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return hidden_states, residual
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@@ -251,13 +246,13 @@ ALL_DECODER_LAYER_TYPES = {
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"positions": -1,
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"intermediate_tensors": 0,
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"inputs_embeds": 0,
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})
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}
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)
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class Qwen3Model(Qwen2Model):
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def __init__(self, *, vllm_config: VllmConfig, prefix: str = ""):
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super().__init__(vllm_config=vllm_config,
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prefix=prefix,
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decoder_layer_type=Qwen3DecoderLayer)
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super().__init__(
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vllm_config=vllm_config, prefix=prefix, decoder_layer_type=Qwen3DecoderLayer
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)
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class Qwen3ForCausalLM(nn.Module, SupportsLoRA, SupportsPP, SupportsEagle3):
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@@ -283,25 +278,28 @@ class Qwen3ForCausalLM(nn.Module, SupportsLoRA, SupportsPP, SupportsEagle3):
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self.lora_config = lora_config
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self.quant_config = quant_config
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self.model = Qwen3Model(vllm_config=vllm_config,
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prefix=maybe_prefix(prefix, "model"))
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self.model = Qwen3Model(
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vllm_config=vllm_config, prefix=maybe_prefix(prefix, "model")
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)
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if get_pp_group().is_last_rank:
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if config.tie_word_embeddings:
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self.lm_head = self.model.embed_tokens
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else:
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self.lm_head = ParallelLMHead(config.vocab_size,
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config.hidden_size,
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quant_config=quant_config,
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prefix=maybe_prefix(
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prefix, "lm_head"))
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self.lm_head = ParallelLMHead(
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config.vocab_size,
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config.hidden_size,
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quant_config=quant_config,
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prefix=maybe_prefix(prefix, "lm_head"),
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)
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else:
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self.lm_head = PPMissingLayer()
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self.logits_processor = LogitsProcessor(config.vocab_size)
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self.make_empty_intermediate_tensors = (
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self.model.make_empty_intermediate_tensors)
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self.model.make_empty_intermediate_tensors
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)
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def set_aux_hidden_state_layers(self, layers: tuple[int, ...]) -> None:
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self.model.aux_hidden_state_layers = layers
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@@ -320,8 +318,9 @@ class Qwen3ForCausalLM(nn.Module, SupportsLoRA, SupportsPP, SupportsEagle3):
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intermediate_tensors: Optional[IntermediateTensors] = None,
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inputs_embeds: Optional[torch.Tensor] = None,
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) -> Union[torch.Tensor, IntermediateTensors]:
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hidden_states = self.model(input_ids, positions, intermediate_tensors,
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inputs_embeds)
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hidden_states = self.model(
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input_ids, positions, intermediate_tensors, inputs_embeds
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)
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return hidden_states
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def compute_logits(
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@@ -331,11 +330,9 @@ class Qwen3ForCausalLM(nn.Module, SupportsLoRA, SupportsPP, SupportsEagle3):
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logits = self.logits_processor(self.lm_head, hidden_states)
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return logits
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def load_weights(self, weights: Iterable[tuple[str,
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torch.Tensor]]) -> set[str]:
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def load_weights(self, weights: Iterable[tuple[str, torch.Tensor]]) -> set[str]:
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loader = AutoWeightsLoader(
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self,
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skip_prefixes=(["lm_head."]
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if self.config.tie_word_embeddings else None),
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skip_prefixes=(["lm_head."] if self.config.tie_word_embeddings else None),
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)
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return loader.load_weights(weights)
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