Support token_type_ids in V1 with less code changes (#21985)

Signed-off-by: Max de Bayser <mbayser@br.ibm.com>

tests/entrypoints/openai/test_rerank.py

@@ -126,7 +126,9 @@ def test_invocations(server: RemoteOpenAIServer):
                                                  invocation_output["results"]):
         assert rerank_result.keys() == invocations_result.keys()
         assert rerank_result["relevance_score"] == pytest.approx(
-            invocations_result["relevance_score"], rel=0.01)
+            invocations_result["relevance_score"], rel=0.05)
+        # TODO: reset this tolerance to 0.01 once we find
+        # an alternative to flash_attn with bfloat16
 
 
 @pytest.mark.asyncio

tests/entrypoints/openai/test_score.py

@@ -220,7 +220,9 @@ class TestModel:
                                                invocation_output["data"]):
             assert score_data.keys() == invocation_data.keys()
             assert score_data["score"] == pytest.approx(
-                invocation_data["score"], rel=0.01)
+                invocation_data["score"], rel=0.05)
+            # TODO: reset this tolerance to 0.01 once we find
+            # an alternative to flash_attn with bfloat16
 
     def test_activation(self, server: RemoteOpenAIServer, model: dict[str,
                                                                       Any]):

tests/models/language/pooling/test_scoring.py

@@ -23,6 +23,15 @@ TEXTS_2 = [
     "The capital of Germany is Berlin.",
 ]
 
+
+@pytest.fixture(autouse=True)
+def v1(run_with_both_engines):
+    # Simple autouse wrapper to run both engines for each test
+    # This can be promoted up to conftest.py to run for every
+    # test in a package
+    pass
+
+
 DTYPE = "half"
 
 

vllm/entrypoints/llm.py

@@ -28,11 +28,15 @@ from vllm.entrypoints.chat_utils import (ChatCompletionMessageParam,
                                          apply_mistral_chat_template,
                                          parse_chat_messages,
                                          resolve_chat_template_content_format)
+# yapf conflicts with isort for this block
+# yapf: disable
 from vllm.entrypoints.score_utils import (ScoreContentPartParam,
                                           ScoreMultiModalParam,
                                           _cosine_similarity,
                                           _validate_score_input_lens,
+                                          compress_token_type_ids,
                                           get_score_prompt)
+# yapf: enable
 from vllm.entrypoints.utils import (_validate_truncation_size,
                                     log_non_default_args)
 from vllm.inputs import PromptType, SingletonPrompt, TextPrompt, TokensPrompt
@@ -1329,6 +1333,7 @@ class LLM:
 
         model_config = self.llm_engine.model_config
         pooling_params.verify("score", model_config)
+        pooling_params_list = list[PoolingParams]()
 
         tokenization_kwargs: dict[str, Any] = {}
 
@@ -1339,38 +1344,31 @@ class LLM:
 
         input_pairs = [(t1, t2) for t1, t2 in zip(data_1, data_2)]
 
-        if model_config.is_multimodal_model:
-            for q, d in input_pairs:
-                _, engine_prompt = get_score_prompt(
-                    model_config=model_config,
-                    data_1=q,
-                    data_2=d,
-                    tokenizer=tokenizer,
-                    tokenization_kwargs=tokenization_kwargs,
-                )
+        model_config = self.llm_engine.model_config
 
-                parsed_prompts.append(engine_prompt)
-        else:
-            for q, t in input_pairs:
-                if model_config.use_pad_token:
-                    # cross_encoder models defaults to using pad_token.
-                    prompt_inputs = tokenizer(
-                        text=q,  # type: ignore[arg-type]
-                        text_pair=t,  # type: ignore[arg-type]
-                        **tokenization_kwargs)
-                else:
-                    # `llm as reranker` models defaults to not using pad_token.
-                    prompt_inputs = tokenizer(
-                        text=q + t,  # type: ignore[operator]
-                        **tokenization_kwargs)
-                engine_prompt = TokensPrompt(
-                    prompt_token_ids=prompt_inputs["input_ids"],
-                    token_type_ids=prompt_inputs.get("token_type_ids"))
-                parsed_prompts.append(engine_prompt)
+        for q, d in input_pairs:
+            _, engine_prompt = get_score_prompt(
+                model_config=model_config,
+                data_1=q,
+                data_2=d,
+                tokenizer=tokenizer,
+                tokenization_kwargs=tokenization_kwargs,
+            )
+
+            if envs.VLLM_USE_V1 and (token_type_ids := engine_prompt.pop(
+                    "token_type_ids", None)):
+                params = pooling_params.clone()
+                compressed = compress_token_type_ids(token_type_ids)
+                params.extra_kwargs = {"compressed_token_type_ids": compressed}
+                pooling_params_list.append(params)
+            else:
+                pooling_params_list.append(pooling_params)
+
+            parsed_prompts.append(engine_prompt)
 
         self._validate_and_add_requests(
             prompts=parsed_prompts,
-            params=pooling_params,
+            params=pooling_params_list,
             use_tqdm=use_tqdm,
             lora_request=lora_request,
         )

vllm/entrypoints/openai/serving_score.py

@@ -7,6 +7,7 @@ from typing import Any, Optional, Union
 
 from fastapi import Request
 
+from vllm import envs
 from vllm.config import ModelConfig
 from vllm.engine.protocol import EngineClient
 from vllm.entrypoints.logger import RequestLogger
@@ -17,11 +18,15 @@ from vllm.entrypoints.openai.protocol import (ErrorResponse, RerankDocument,
                                               ScoreResponseData, UsageInfo)
 from vllm.entrypoints.openai.serving_engine import OpenAIServing
 from vllm.entrypoints.openai.serving_models import OpenAIServingModels
+# yapf conflicts with isort for this block
+# yapf: disable
 from vllm.entrypoints.score_utils import (ScoreContentPartParam,
                                           ScoreMultiModalParam,
                                           _cosine_similarity,
                                           _validate_score_input_lens,
+                                          compress_token_type_ids,
                                           get_score_prompt)
+# yapf: enable
 from vllm.entrypoints.utils import _validate_truncation_size
 from vllm.inputs.data import TokensPrompt
 from vllm.logger import init_logger
@@ -158,6 +163,8 @@ class ServingScores(OpenAIServing):
             tokenizer=tokenizer,
             tokenization_kwargs=tokenization_kwargs,
         )
+        self._validate_input(request, engine_prompt["prompt_token_ids"],
+                             full_prompt)
         if request.mm_processor_kwargs is not None:
             engine_prompt["mm_processor_kwargs"] = request.mm_processor_kwargs
 
@@ -188,64 +195,27 @@ class ServingScores(OpenAIServing):
 
         input_pairs = [(t1, t2) for t1, t2 in zip(data_1, data_2)]
 
-        if self.model_config.is_multimodal_model:
+        preprocess_async = make_async(self._preprocess_score,
+                                      executor=self._tokenizer_executor)
 
-            preprocess_async = make_async(self._preprocess_score,
-                                          executor=self._tokenizer_executor)
+        preprocessed_prompts = await asyncio.gather(
+            *(preprocess_async(request=request,
+                               tokenizer=tokenizer,
+                               tokenization_kwargs=tokenization_kwargs,
+                               data_1=t1,
+                               data_2=t2) for t1, t2 in input_pairs))
 
-            preprocessed_prompts = await asyncio.gather(
-                *(preprocess_async(request=request,
-                                   tokenizer=tokenizer,
-                                   tokenization_kwargs=tokenization_kwargs,
-                                   data_1=t1,
-                                   data_2=t2) for t1, t2 in input_pairs))
-
-            for full_prompt, engine_prompt in preprocessed_prompts:
-                request_prompts.append(full_prompt)
-                engine_prompts.append(engine_prompt)
-
-        else:
-            tokenize_async = make_async(tokenizer.__call__,
-                                        executor=self._tokenizer_executor)
-            use_pad_token = self.model_config.use_pad_token
-
-            if use_pad_token:
-                # cross_encoder models defaults to using pad_token.
-                tokenized_prompts = await asyncio.gather(*(
-                    tokenize_async(
-                        text=t1,  # type: ignore[arg-type]
-                        text_pair=t2,  # type: ignore[arg-type]
-                        **tokenization_kwargs) for t1, t2 in input_pairs))
-            else:
-                # `llm as reranker` models defaults to not using pad_token.
-                tokenized_prompts = await asyncio.gather(*(
-                    tokenize_async(
-                        text=t1 +  # type: ignore[operator]
-                        t2,
-                        **tokenization_kwargs) for t1, t2 in input_pairs))
-
-            for prompt_inputs, (t1, t2) in zip(tokenized_prompts, input_pairs):
-                sep_token = tokenizer.sep_token if (tokenizer.sep_token
-                                                    and use_pad_token) else ''
-                request_prompt = f"{t1}{sep_token}{t2}"
-
-                input_ids = prompt_inputs["input_ids"]
-                text_token_prompt = \
-                    self._validate_input(request, input_ids, request_prompt)
-                engine_prompt = TokensPrompt(
-                    prompt_token_ids=text_token_prompt["prompt_token_ids"],
-                    token_type_ids=prompt_inputs.get("token_type_ids"))
-
-                request_prompts.append(request_prompt)
-                engine_prompts.append(engine_prompt)
+        for full_prompt, engine_prompt in preprocessed_prompts:
+            request_prompts.append(full_prompt)
+            engine_prompts.append(engine_prompt)
 
         # Schedule the request and get the result generator.
         generators: list[AsyncGenerator[PoolingRequestOutput, None]] = []
 
-        pooling_params = request.to_pooling_params()
+        default_pooling_params = request.to_pooling_params()
 
         try:
-            pooling_params.verify("score", self.model_config)
+            default_pooling_params.verify("score", self.model_config)
         except ValueError as e:
             return self.create_error_response(str(e))
 
@@ -254,9 +224,19 @@ class ServingScores(OpenAIServing):
 
             self._log_inputs(request_id_item,
                              request_prompts[i],
-                             params=pooling_params,
+                             params=default_pooling_params,
                              lora_request=lora_request)
 
+            if envs.VLLM_USE_V1 and (token_type_ids := engine_prompt.pop(
+                    "token_type_ids", None)):
+                pooling_params = default_pooling_params.clone()
+                compressed = compress_token_type_ids(token_type_ids)
+                pooling_params.extra_kwargs = {
+                    "compressed_token_type_ids": compressed
+                }
+            else:
+                pooling_params = (default_pooling_params)
+
             generator = self.engine_client.encode(
                 engine_prompt,
                 pooling_params,

vllm/entrypoints/score_utils.py

@@ -184,15 +184,49 @@ def get_score_prompt(
         model_config,
         tokenizer,
     )
+    from vllm.model_executor.model_loader import get_model_cls
 
-    full_prompt = apply_score_template(model_config, prompt_1, prompt_2)
-
-    prompt_inputs = tokenizer(full_prompt, **tokenization_kwargs)
+    model = get_model_cls(model_config)
+    if supports_score_template(model):
+        full_prompt = apply_score_template(model_config, prompt_1, prompt_2)
+        prompt_inputs = tokenizer(full_prompt, **tokenization_kwargs)
+    elif model_config.use_pad_token:
+        # cross_encoder models defaults to using pad_token.
+        prompt_inputs = tokenizer(text=prompt_1,
+                                  text_pair=prompt_2,
+                                  **tokenization_kwargs)
+        full_prompt = tokenizer.decode(prompt_inputs["input_ids"])
+    else:
+        # `llm as reranker` models defaults to not using pad_token.
+        full_prompt = prompt_1 + prompt_2
+        prompt_inputs = tokenizer(text=full_prompt, **tokenization_kwargs)
 
     engine_prompt = TokensPrompt(prompt_token_ids=prompt_inputs["input_ids"])
 
+    if (token_type_ids := prompt_inputs.get("token_type_ids")) is not None:
+        engine_prompt["token_type_ids"] = token_type_ids
+
     post_process_tokens(model_config, engine_prompt)
 
     if mm_data is not None:
         engine_prompt["multi_modal_data"] = mm_data
     return full_prompt, engine_prompt
+
+
+def compress_token_type_ids(token_type_ids: list[int]) -> int:
+    """
+    Return position of the first 1 or the length of the list
+    if not found.
+    """
+    first_one = len(token_type_ids)
+    err_msg = "Token type ids are expected to be a sequence"\
+              " of zeros followed by a sequence of ones"
+    for i, type_id in enumerate(token_type_ids):
+        if type_id == 0 and first_one < i:
+            raise ValueError(err_msg)
+        elif type_id == 1 and first_one > i:
+            first_one = i
+        elif type_id > 1:
+            raise ValueError(err_msg)
+
+    return first_one

vllm/model_executor/models/bert.py

@@ -28,7 +28,7 @@ from vllm.model_executor.pooling_metadata import PoolingMetadata
 from vllm.sequence import IntermediateTensors
 from vllm.tasks import PoolingTask
 
-from .interfaces import SupportsCrossEncoding, SupportsQuant, SupportsV0Only
+from .interfaces import SupportsCrossEncoding, SupportsQuant
 from .utils import AutoWeightsLoader, WeightsMapper, maybe_prefix
 
 
@@ -60,21 +60,13 @@ class BertEmbedding(nn.Module):
         self,
         input_ids: torch.Tensor,
         position_ids: torch.Tensor,
-        token_type_ids: Optional[torch.Tensor] = None,
     ) -> torch.Tensor:
-        input_shape = input_ids.size()
 
-        # Input embeddings.
+        token_type_ids = _decode_token_type_ids(input_ids)
+
         inputs_embeds = self.word_embeddings(input_ids)
-
-        # Position embeddings.
         position_embeddings = self.position_embeddings(position_ids)
 
-        if token_type_ids is None:
-            token_type_ids = torch.zeros(input_shape,
-                                         dtype=torch.long,
-                                         device=inputs_embeds.device)
-
         token_type_embeddings = self.token_type_embeddings(token_type_ids)
 
         embeddings = inputs_embeds + token_type_embeddings + position_embeddings
@@ -350,25 +342,23 @@ class BertModel(nn.Module, SupportsQuant):
     ) -> None:
         super().__init__()
 
-        config = vllm_config.model_config.hf_config
-        self.embeddings = embedding_class(config)
+        self.config = vllm_config.model_config.hf_config
+        self.embeddings = embedding_class(self.config)
         self.encoder = BertEncoder(vllm_config=vllm_config,
                                    prefix=f"{prefix}.encoder")
 
     def forward(
         self,
         input_ids: torch.Tensor,
-        position_ids: torch.Tensor,
+        positions: torch.Tensor,
         intermediate_tensors: Optional[IntermediateTensors] = None,
         inputs_embeds: Optional[torch.Tensor] = None,
-        token_type_ids: Optional[torch.Tensor] = None,
     ) -> torch.Tensor:
         if inputs_embeds is not None:
             hidden_states = inputs_embeds
         else:
             hidden_states = self.embeddings(input_ids=input_ids,
-                                            position_ids=position_ids,
-                                            token_type_ids=token_type_ids)
+                                            position_ids=positions)
         return self.encoder(hidden_states)
 
     def _load_weights(self, weights: Iterable[tuple[str, torch.Tensor]]):
@@ -468,13 +458,11 @@ class BertEmbeddingModel(nn.Module, SupportsQuant):
         self,
         input_ids: torch.Tensor,
         positions: torch.Tensor,
-        token_type_ids: Optional[torch.Tensor] = None,
         intermediate_tensors: Optional[IntermediateTensors] = None,
         inputs_embeds: Optional[torch.Tensor] = None,
     ) -> torch.Tensor:
         return self.model(input_ids=input_ids,
-                          position_ids=positions,
-                          token_type_ids=token_type_ids,
+                          positions=positions,
                           inputs_embeds=inputs_embeds,
                           intermediate_tensors=intermediate_tensors)
 
@@ -508,8 +496,53 @@ class BertEmbeddingModel(nn.Module, SupportsQuant):
         })
 
 
-class BertForSequenceClassification(nn.Module, SupportsV0Only,
-                                    SupportsCrossEncoding, SupportsQuant):
+# Here we encode the token type ids together with the input ids.
+# Since we use int 32 for the input IDs and the vocabulary size
+# is way lower than 2**31, there is room to encode additional
+# bits. At the same time, for cross-encoder use cases, the
+# token type ids are only 0 or 1, requiring only 1 bit.
+# This means that we can store the token type ids in the 31st
+# bit. We void the 32nd bit because that would produce a negative
+# number, which could be used to signal other things.
+#
+# The reason for all of this is that all the tensors that are
+# passed as input to the forward function of a module marked
+# with @support_torch_compile have to be persistent. So to
+# avoid adding more persistent tensors in the model runner, we
+# encode more information in the same persistent tensor.
+#
+# Since the *ForClassification module is outside of the BertModel
+# which is compiled, we can do the encoding here and then separate
+# the information again in the Embedding  layer. Since with bit masks
+# we can do this entirely with torch operations and without branching,
+# it works with torch compile.
+
+TOKEN_TYPE_SHIFT = 30
+
+
+def _encode_token_type_ids(input_ids: torch.Tensor,
+                           token_type_ids: torch.Tensor) -> None:
+    # input_ids can be padded to the right
+    input_ids[:token_type_ids.shape[0]].bitwise_or_(
+        token_type_ids << TOKEN_TYPE_SHIFT)
+
+
+def _decode_token_type_ids(input_ids: torch.Tensor) -> torch.Tensor:
+
+    ids_mask = torch.ones(input_ids.shape,
+                          dtype=torch.int32,
+                          device=input_ids.device) << TOKEN_TYPE_SHIFT
+    tokens_mask = ids_mask.bitwise_not()
+
+    token_type_ids = input_ids.bitwise_and(ids_mask) >> TOKEN_TYPE_SHIFT
+
+    input_ids.bitwise_and_(tokens_mask)
+
+    return token_type_ids
+
+
+class BertForSequenceClassification(nn.Module, SupportsCrossEncoding,
+                                    SupportsQuant):
     """A model that uses Bert to provide embedding functionalities.
 
    This class encapsulates the BertModel and provides an interface for
@@ -567,8 +600,13 @@ class BertForSequenceClassification(nn.Module, SupportsV0Only,
         inputs_embeds: Optional[torch.Tensor] = None,
         token_type_ids: Optional[torch.Tensor] = None,
     ) -> torch.Tensor:
+
+        if token_type_ids is not None:
+            assert self.bert.config.vocab_size < (1 << TOKEN_TYPE_SHIFT)
+            assert input_ids is not None
+            _encode_token_type_ids(input_ids, token_type_ids)
+
         return self.bert(input_ids=input_ids,
-                         position_ids=positions,
+                         positions=positions,
                          inputs_embeds=inputs_embeds,
-                         intermediate_tensors=intermediate_tensors,
-                         token_type_ids=token_type_ids)
+                         intermediate_tensors=intermediate_tensors)

vllm/model_executor/models/roberta.py

@@ -14,13 +14,16 @@ from vllm.model_executor.layers.pooler import (ClassifierPooler, CLSPool,
                                                DispatchPooler, Pooler)
 from vllm.model_executor.layers.vocab_parallel_embedding import (
     VocabParallelEmbedding)
-from vllm.model_executor.models.bert import BertEmbeddingModel, BertModel
+from vllm.model_executor.models.bert import (TOKEN_TYPE_SHIFT,
+                                             BertEmbeddingModel, BertModel,
+                                             _decode_token_type_ids,
+                                             _encode_token_type_ids)
 from vllm.model_executor.models.utils import (AutoWeightsLoader, WeightsMapper,
                                               maybe_prefix)
 from vllm.sequence import IntermediateTensors
 
 from .bert_with_rope import BertWithRope, JinaRobertaModel
-from .interfaces import SupportsCrossEncoding, SupportsV0Only
+from .interfaces import SupportsCrossEncoding
 
 
 class RobertaEmbedding(nn.Module):
@@ -53,17 +56,12 @@ class RobertaEmbedding(nn.Module):
         self,
         input_ids: torch.Tensor,
         position_ids: torch.Tensor,
-        token_type_ids: Optional[torch.Tensor] = None,
     ) -> torch.Tensor:
-        input_shape = input_ids.size()
-        inputs_embeds = self.word_embeddings(input_ids)
 
-        # Position embeddings.
+        token_type_ids = _decode_token_type_ids(input_ids)
+
+        inputs_embeds = self.word_embeddings(input_ids)
         position_embeddings = self.position_embeddings(position_ids)
-        if token_type_ids is None:
-            token_type_ids = torch.zeros(input_shape,
-                                         dtype=torch.long,
-                                         device=inputs_embeds.device)
 
         token_type_embeddings = self.token_type_embeddings(token_type_ids)
         embeddings = inputs_embeds + token_type_embeddings + position_embeddings
@@ -107,7 +105,6 @@ class RobertaEmbeddingModel(BertEmbeddingModel):
         self,
         input_ids: torch.Tensor,
         positions: torch.Tensor,
-        token_type_ids: Optional[torch.Tensor] = None,
         intermediate_tensors: Optional[IntermediateTensors] = None,
         inputs_embeds: Optional[torch.Tensor] = None,
     ) -> torch.Tensor:
@@ -119,9 +116,8 @@ class RobertaEmbeddingModel(BertEmbeddingModel):
                                   position_ids=positions,
                                   padding_idx=self.padding_idx)
 
-        return self.model(input_ids,
-                          positions,
-                          token_type_ids=token_type_ids,
+        return self.model(input_ids=input_ids,
+                          positions=positions,
                           inputs_embeds=inputs_embeds,
                           intermediate_tensors=intermediate_tensors)
 
@@ -153,8 +149,7 @@ class RobertaEmbeddingModel(BertEmbeddingModel):
         return loader.load_weights(weights_list, mapper=mapper)
 
 
-class RobertaForSequenceClassification(nn.Module, SupportsCrossEncoding,
-                                       SupportsV0Only):
+class RobertaForSequenceClassification(nn.Module, SupportsCrossEncoding):
     """A model that uses Roberta to provide embedding functionalities.
 
    This class encapsulates the BertModel and provides an interface for
@@ -226,11 +221,14 @@ class RobertaForSequenceClassification(nn.Module, SupportsCrossEncoding,
         replace_roberta_positions(input_ids=input_ids,
                                   position_ids=positions,
                                   padding_idx=self.padding_idx)
+        if token_type_ids is not None:
+            assert self.roberta.config.vocab_size < (1 << TOKEN_TYPE_SHIFT)
+            assert input_ids is not None
+            _encode_token_type_ids(input_ids, token_type_ids)
         return self.roberta(input_ids=input_ids,
-                            position_ids=positions,
+                            positions=positions,
                             inputs_embeds=inputs_embeds,
-                            intermediate_tensors=intermediate_tensors,
-                            token_type_ids=token_type_ids)
+                            intermediate_tensors=intermediate_tensors)
 
 
 # Adapted from transformers

vllm/pooling_params.py

@@ -2,7 +2,7 @@
 # SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 from copy import deepcopy
-from typing import TYPE_CHECKING, Optional
+from typing import TYPE_CHECKING, Any, Optional
 
 import msgspec
 
@@ -46,6 +46,9 @@ class PoolingParams(
     requires_token_ids: bool = False
     """Internal use only."""
 
+    extra_kwargs: Optional[dict[str, Any]] = None
+    """Internal use only."""
+
     output_kind: RequestOutputKind = RequestOutputKind.FINAL_ONLY
 
     @property
@@ -167,7 +170,8 @@ class PoolingParams(
                 f"softmax={self.softmax}, "
                 f"step_tag_id={self.step_tag_id}, "
                 f"returned_token_ids={self.returned_token_ids}, "
-                f"requires_token_ids={self.requires_token_ids})")
+                f"requires_token_ids={self.requires_token_ids}, "
+                f"extra_kwargs={self.extra_kwargs})")
 
     def __post_init__(self) -> None:
         assert self.output_kind == RequestOutputKind.FINAL_ONLY,\

vllm/v1/worker/gpu_model_runner.py

@@ -336,6 +336,41 @@ class GPUModelRunner(LoRAModelRunnerMixin, KVConnectorModelRunnerMixin):
 
         self.reorder_batch_threshold: Optional[int] = None
 
+    def _init_model_kwargs(self, num_tokens: int):
+        model_kwargs = dict[str, Any]()
+        num_reqs = self.input_batch.num_reqs
+
+        pooling_params = self.input_batch.pooling_metadata.pooling_params
+
+        num_pooling_reqs = len(pooling_params)
+
+        if num_pooling_reqs == 0:
+            return model_kwargs
+
+        assert num_pooling_reqs == num_reqs
+
+        token_type_id_requests = dict[int, Any]()
+        for i, param in enumerate(pooling_params):
+            if param.extra_kwargs is not None and \
+            (token_types := param.extra_kwargs.get(
+                "compressed_token_type_ids")) is not None:
+                token_type_id_requests[i] = token_types
+
+        if len(token_type_id_requests) == 0:
+            return model_kwargs
+
+        seq_lens = self.seq_lens[:num_reqs]
+        token_type_ids = []
+
+        for i in range(num_reqs):
+            pos = token_type_id_requests.get(i, seq_lens[i])
+            ids = (torch.arange(seq_lens[i]) >= pos).int()
+            token_type_ids.append(ids)
+
+        model_kwargs["token_type_ids"] = torch.concat(token_type_ids).to(
+            device=self.device)
+        return model_kwargs
+
     def _may_reorder_batch(self, scheduler_output: "SchedulerOutput") -> None:
         """
         Update the order of requests in the batch based on the attention
@@ -1504,12 +1539,14 @@ class GPUModelRunner(LoRAModelRunnerMixin, KVConnectorModelRunnerMixin):
             input_ids = None
             inputs_embeds = self.inputs_embeds[:num_input_tokens]
             model_mm_kwargs = self._extract_mm_kwargs(scheduler_output)
+            model_kwargs = self._init_model_kwargs(num_scheduled_tokens)
         else:
             # For text-only models, we use token ids as input.
             # While it is possible to use embeddings as input just like the
             # multimodal models, it is not desirable for performance since
             # then the embedding layer is not included in the CUDA graph.
             input_ids = self.input_ids[:num_input_tokens]
+            model_kwargs = self._init_model_kwargs(num_input_tokens)
             inputs_embeds = None
             model_mm_kwargs = {}
         if self.uses_mrope:
@@ -1548,6 +1585,7 @@ class GPUModelRunner(LoRAModelRunnerMixin, KVConnectorModelRunnerMixin):
                     model_mm_kwargs,
                     device=self.device,
                 ),
+                **model_kwargs,
             )
 
         if self.use_aux_hidden_state_outputs:
@@ -2211,6 +2249,7 @@ class GPUModelRunner(LoRAModelRunnerMixin, KVConnectorModelRunnerMixin):
 
         with self.maybe_dummy_run_with_lora(self.lora_config,
                                             num_scheduled_tokens):
+            model_kwargs = self._init_model_kwargs(num_tokens)
             if self.supports_mm_inputs:
                 input_ids = None
                 inputs_embeds = self.inputs_embeds[:num_tokens]
@@ -2252,6 +2291,7 @@ class GPUModelRunner(LoRAModelRunnerMixin, KVConnectorModelRunnerMixin):
                         model_mm_kwargs,
                         device=self.device,
                     ),
+                    **model_kwargs,
                 )
 
             if self.use_aux_hidden_state_outputs: