Properly initializing the new field in the attn metadata

tests/kernels/utils.py

@@ -914,6 +914,7 @@ def make_test_metadata(
             num_prefills=num_prefills,
             slot_mapping=(None if kv_mmap is None else kv_mmap.slot_mapping),
             multi_modal_placeholder_index_maps=None,
+            enable_kv_scales_calculation=True,
             num_prefill_tokens=num_prefill_tokens,
             num_decode_tokens=num_decode_tokens,
             seq_lens=seq_lens,
@@ -963,6 +964,7 @@ def make_test_metadata(
             num_prefills=num_prefills,
             slot_mapping=kv_mmap.slot_mapping,
             multi_modal_placeholder_index_maps=None,
+            enable_kv_scales_calculation=True,
             num_prefill_tokens=num_prefill_tokens,
             num_decode_tokens=num_decode_tokens,
             seq_lens=seq_lens,

tests/worker/test_model_input.py

@@ -74,6 +74,7 @@ def test_model_runner_input():
         num_decode_tokens=3,
         slot_mapping=torch.zeros(1),
         multi_modal_placeholder_index_maps=None,
+        enable_kv_scales_calculation=True,
     )
     model_input = ModelInputForGPUWithSamplingMetadata(
         input_tokens=torch.ones(10),
@@ -126,6 +127,7 @@ def test_embedding_model_runner_input():
         num_decode_tokens=3,
         slot_mapping=torch.zeros(1),
         multi_modal_placeholder_index_maps=None,
+        enable_kv_scales_calculation=True,
     )
     model_input = ModelInputForGPUWithPoolingMetadata(
         input_tokens=torch.ones(10),
@@ -177,6 +179,7 @@ def test_multi_step_model_runner_input():
         num_decode_tokens=3,
         slot_mapping=torch.zeros(1),
         multi_modal_placeholder_index_maps=None,
+        enable_kv_scales_calculation=True,
     )
     frozen_model_input = ModelInputForGPUWithSamplingMetadata(
         input_tokens=torch.ones(10),

vllm/attention/backends/abstract.py

@@ -1,6 +1,6 @@
 from abc import ABC, abstractmethod
 from contextlib import contextmanager
-from dataclasses import dataclass, field, fields
+from dataclasses import dataclass, fields
 from typing import (TYPE_CHECKING, Any, Dict, Generic, List, Optional, Set,
                     Tuple, Type, TypeVar)
 
@@ -126,8 +126,7 @@ class AttentionMetadata:
 
     # Enable/disable KV scales calculation. This is so that we can disable the
     # calculation until after prefill and cuda graph capture.
-    enable_kv_scales_calculation: bool = field(init=False,
-                                               default_factory=lambda: True)
+    enable_kv_scales_calculation: bool
 
     @property
     @abstractmethod

vllm/attention/backends/blocksparse_attn.py

@@ -222,6 +222,7 @@ def prefill_metadata(
             slot_mapping=self.slot_mapping[:self.num_prefill_tokens],
             multi_modal_placeholder_index_maps=self.
             multi_modal_placeholder_index_maps,
+            enable_kv_scales_calculation=self.enable_kv_scales_calculation,
             seq_lens=self.seq_lens[:self.num_prefills],
             seq_lens_tensor=self.seq_lens_tensor[:self.num_prefills],
             max_query_len=self.max_query_len,
@@ -251,6 +252,7 @@ def decode_metadata(self) -> Optional["BlocksparseFlashAttentionMetadata"]:
             num_decode_tokens=self.num_decode_tokens,
             slot_mapping=self.slot_mapping[self.num_prefill_tokens:],
             multi_modal_placeholder_index_maps=None,
+            enable_kv_scales_calculation=False,
             seq_lens=None,
             seq_lens_tensor=self.seq_lens_tensor[self.num_prefills:],
             max_query_len=None,

vllm/attention/backends/flash_attn.py

@@ -224,6 +224,7 @@ def prefill_metadata(self) -> Optional["FlashAttentionMetadata"]:
             slot_mapping=slot_mapping,
             multi_modal_placeholder_index_maps=self.
             multi_modal_placeholder_index_maps,
+            enable_kv_scales_calculation=self.enable_kv_scales_calculation,
             seq_lens=seq_lens,
             seq_lens_tensor=seq_lens_tensor,
             max_query_len=self.max_query_len,
@@ -268,6 +269,7 @@ def decode_metadata(self) -> Optional["FlashAttentionMetadata"]:
             num_decode_tokens=self.num_decode_tokens,
             slot_mapping=slot_mapping,
             multi_modal_placeholder_index_maps=None,
+            enable_kv_scales_calculation=True,
             seq_lens=None,
             seq_lens_tensor=seq_lens_tensor,
             max_decode_query_len=self.max_decode_query_len,
@@ -550,6 +552,7 @@ def build(self, seq_lens: List[int], query_lens: List[int],
             num_decode_tokens=num_decode_tokens,
             seq_lens=seq_lens,
             multi_modal_placeholder_index_maps=placeholder_index_maps,
+            enable_kv_scales_calculation=True,
             seq_lens_tensor=seq_lens_tensor,
             max_query_len=max_query_len,
             max_decode_query_len=max_decode_query_len,

vllm/attention/backends/flashinfer.py

@@ -218,6 +218,7 @@ def graph_capture_get_metadata_for_batch(
             num_prefills=0,
             slot_mapping=self._graph_slot_mapping[:batch_size],
             multi_modal_placeholder_index_maps=None,
+            enable_kv_scales_calculation=False,
             num_prefill_tokens=0,
             num_decode_tokens=batch_size,
             max_prefill_seq_len=0,
@@ -711,6 +712,7 @@ def build(self, seq_lens: List[int], query_lens: List[int],
             num_prefills=self.num_prefills,
             slot_mapping=slot_mapping_tensor,
             multi_modal_placeholder_index_maps=placeholder_index_maps,
+            enable_kv_scales_calculation=False,
             num_prefill_tokens=self.num_prefill_tokens,
             num_decode_tokens=num_decode_tokens,
             max_prefill_seq_len=max_prefill_seq_len,

vllm/attention/backends/placeholder_attn.py

@@ -140,6 +140,7 @@ def prefill_metadata(self) -> Optional["PlaceholderAttentionMetadata"]:
             slot_mapping=slot_mapping,
             multi_modal_placeholder_index_maps=self.
             multi_modal_placeholder_index_maps,
+            enable_kv_scales_calculation=self.enable_kv_scales_calculation,
             seq_lens=self.seq_lens[:self.num_prefills],
             seq_lens_tensor=self.seq_lens_tensor[:self.num_prefills],
             max_decode_query_len=0,
@@ -173,6 +174,7 @@ def decode_metadata(self) -> Optional["PlaceholderAttentionMetadata"]:
             num_decode_tokens=self.num_decode_tokens,
             slot_mapping=slot_mapping,
             multi_modal_placeholder_index_maps=None,
+            enable_kv_scales_calculation=True,
             seq_lens=None,
             seq_lens_tensor=self.seq_lens_tensor[self.num_prefills:],
             max_decode_query_len=self.max_decode_query_len,
@@ -378,6 +380,7 @@ def build(self, seq_lens: List[int], query_lens: List[int],
             num_prefills=self.num_prefills,
             slot_mapping=slot_mapping,
             multi_modal_placeholder_index_maps=placeholder_index_maps,
+            enable_kv_scales_calculation=True,
             num_prefill_tokens=self.num_prefill_tokens,
             num_decode_tokens=num_decode_tokens,
             seq_lens=seq_lens,

vllm/attention/backends/rocm_flash_attn.py

@@ -165,6 +165,7 @@ def prefill_metadata(self) -> Optional["ROCmFlashAttentionMetadata"]:
             slot_mapping=self.slot_mapping[:self.num_prefill_tokens],
             multi_modal_placeholder_index_maps=self.
             multi_modal_placeholder_index_maps,
+            enable_kv_scales_calculation=self.enable_kv_scales_calculation,
             seq_lens=self.seq_lens[:self.num_prefills],
             seq_lens_tensor=self.seq_lens_tensor[:self.num_prefills],
             max_query_len=self.max_query_len,
@@ -202,6 +203,7 @@ def decode_metadata(self) -> Optional["ROCmFlashAttentionMetadata"]:
             num_decode_tokens=self.num_decode_tokens,
             slot_mapping=self.slot_mapping[self.num_prefill_tokens:],
             multi_modal_placeholder_index_maps=None,
+            enable_kv_scales_calculation=True,
             seq_lens=None,
             seq_lens_tensor=self.seq_lens_tensor[self.num_prefills:],
             max_query_len=None,

vllm/attention/backends/torch_sdpa.py

@@ -372,6 +372,7 @@ def build(self, seq_lens: List[int], query_lens: List[int],
             prefill_block_tables=prefill_block_tables,
             slot_mapping=slot_mapping,
             multi_modal_placeholder_index_maps=placeholder_index_maps,
+            enable_kv_scales_calculation=False,
         )
 
         return attn_metadata

vllm/attention/backends/utils.py

@@ -274,6 +274,7 @@ def build(self, seq_lens: List[int], query_lens: List[int],
             num_prefills=self.num_prefills,
             slot_mapping=slot_mapping_tensor,
             multi_modal_placeholder_index_maps=placeholder_index_maps,
+            enable_kv_scales_calculation=True,
             num_prefill_tokens=self.num_prefill_tokens,
             num_decode_tokens=num_decode_tokens,
             seq_lens=seq_lens,
@@ -326,6 +327,7 @@ def graph_capture_get_metadata_for_batch(
             num_decode_tokens=batch_size,
             slot_mapping=self._graph_slot_mapping[:batch_size],
             multi_modal_placeholder_index_maps=None,
+            enable_kv_scales_calculation=True,
             seq_lens=None,
             seq_lens_tensor=self._graph_seq_lens[:batch_size],
             max_query_len=1,

vllm/attention/backends/xformers.py

@@ -217,6 +217,7 @@ def prefill_metadata(self) -> Optional["XFormersMetadata"]:
             slot_mapping=slot_mapping,
             multi_modal_placeholder_index_maps=self.
             multi_modal_placeholder_index_maps,
+            enable_kv_scales_calculation=self.enable_kv_scales_calculation,
             seq_lens=seq_lens,
             seq_lens_tensor=seq_lens_tensor,
             max_query_len=self.max_query_len,
@@ -261,6 +262,7 @@ def decode_metadata(self) -> Optional["XFormersMetadata"]:
             num_decode_tokens=self.num_decode_tokens,
             slot_mapping=slot_mapping,
             multi_modal_placeholder_index_maps=None,
+            enable_kv_scales_calculation=True,
             seq_lens_tensor=seq_lens_tensor,
             max_prefill_seq_len=0,
             max_decode_seq_len=self.max_decode_seq_len,

vllm/worker/hpu_model_runner.py

@@ -892,7 +892,8 @@ def _prepare_prompt(
             num_decode_tokens=0,
             slot_mapping=slot_mapping,
             multi_modal_placeholder_index_maps=
-            None  # FIXME(kzawora): mutli-modality will not work here
+            None,  # FIXME(kzawora): mutli-modality will not work here
+            enable_kv_scales_calculation=False,
         )
         multi_modal_kwargs = MultiModalKwargs.batch(multi_modal_kwargs_list)
 
@@ -1046,7 +1047,9 @@ def _prepare_decode(
             num_prefill_tokens=0,
             num_decode_tokens=num_decode_tokens,
             slot_mapping=slot_mapping,
-            multi_modal_placeholder_index_maps=None)
+            multi_modal_placeholder_index_maps=None,
+            enable_kv_scales_calculation=False,
+        )
         return PrepareDecodeMetadata(input_tokens=input_tokens,
                                      input_positions=input_positions,
                                      attn_metadata=attn_metadata,

vllm/worker/model_runner.py

@@ -174,8 +174,6 @@ def from_broadcasted_tensor_dict(
         if attn_backend is not None:
             tensor_dict = _init_attn_metadata_from_tensor_dict(
                 attn_backend, tensor_dict)
-        if "enable_kv_scales_calculation" in tensor_dict:
-            tensor_dict.pop("enable_kv_scales_calculation")
         return cls(**tensor_dict)
 
 

vllm/worker/model_runner_base.py

@@ -47,8 +47,7 @@ def _init_attn_metadata_from_tensor_dict(
     # Extract the fields used to create AttentionMetadata.
     valid_attn_kwargs = {}
     for field in dataclasses.fields(attn_backend.get_metadata_cls()):
-        if field.name in tensor_dict and field.name != \
-            'enable_kv_scales_calculation':
+        if field.name in tensor_dict:
             valid_attn_kwargs[field.name] = tensor_dict.pop(field.name)
 
     attn_metadata = attn_backend.make_metadata(**valid_attn_kwargs)

vllm/worker/openvino_model_runner.py

@@ -278,6 +278,7 @@ def _prepare_model_input(
             block_indices_begins=block_indices_begins_tensor,
             max_context_len=max_context_len_tensor,
             multi_modal_placeholder_index_maps=placeholder_index_maps,
+            enable_kv_scales_calculation=False,
         )
 
         multi_modal_kwargs = MultiModalKwargs.batch(multi_modal_kwargs_list)

vllm/worker/tpu_model_runner.py

@@ -184,6 +184,7 @@ def _dummy_run(
                     num_decode_tokens=0,
                     slot_mapping=slot_mapping,
                     multi_modal_placeholder_index_maps=None,
+                    enable_kv_scales_calculation=False,
                     block_tables=None,
                     context_lens=None,
                     effective_query_lens=None,
@@ -202,6 +203,7 @@ def _dummy_run(
                     num_decode_tokens=0,
                     slot_mapping=slot_mapping,
                     multi_modal_placeholder_index_maps=None,
+                    enable_kv_scales_calculation=False,
                     block_tables=block_tables,
                     context_lens=context_lens,
                     effective_query_lens=effective_query_lens,
@@ -233,6 +235,7 @@ def _dummy_run(
                 num_decode_tokens=batch_size * seq_len,
                 slot_mapping=slot_mapping,
                 multi_modal_placeholder_index_maps=None,
+                enable_kv_scales_calculation=False,
                 block_tables=block_tables,
                 context_lens=context_lens,
             )
@@ -418,6 +421,7 @@ def _prepare_prompt(
             num_decode_tokens=0,
             slot_mapping=slot_mapping,
             multi_modal_placeholder_index_maps=None,
+            enable_kv_scales_calculation=False,
             block_tables=block_tables,
             context_lens=context_lens,
             effective_query_lens=prompt_lens,
@@ -489,6 +493,7 @@ def _prepare_decode(
             num_decode_tokens=batch_size,
             slot_mapping=slot_mapping,
             multi_modal_placeholder_index_maps=None,
+            enable_kv_scales_calculation=False,
             block_tables=block_tables,
             context_lens=context_lens,
         )

vllm/worker/xpu_model_runner.py

@@ -257,6 +257,7 @@ def _prepare_prompt(
             is_prompt=True,
             slot_mapping=slot_mapping,
             multi_modal_placeholder_index_maps=placeholder_index_maps,
+            enable_kv_scales_calculation=False,
             seq_lens=seq_lens,
             seqlen_q=seqlen_q,
             max_seqlen=max_seqlen,
@@ -341,6 +342,7 @@ def _prepare_decode(
             is_prompt=False,
             slot_mapping=slot_mapping,
             multi_modal_placeholder_index_maps=None,
+            enable_kv_scales_calculation=False,
             seq_lens=seq_lens,
             seqlen_q=torch.tensor([]),
             max_seqlen=0,