c1618a0427
### What this PR does / why we need it?
Added a check in the may_reinitialize_input_batch method to verify
whether the backend implements the get_supported_block_size method
### Does this PR introduce _any_ user-facing change?
no user-facing change
### How was this patch tested?
Only a few lines of code within the methods were modified, and the
format check test has been passed.
- vLLM version: v0.14.1
- vLLM main:
dc917cceb8
---------
Signed-off-by: Debuuuuger <huangzr@cmbchina.com>
Signed-off-by: debuger <102402761+huangazazaz@users.noreply.github.com>
Signed-off-by: Debuuuuger <12110718@mail.sustech.edu.cn>
Co-authored-by: Debuuuuger <huangzr@cmbchina.com>
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
1541 lines
67 KiB
Python
1541 lines
67 KiB
Python
from dataclasses import dataclass
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from typing import TYPE_CHECKING, NamedTuple, TypeVar
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import numpy as np
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import torch
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import torch_npu
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import vllm.envs as envs_vllm
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from vllm.config import VllmConfig, get_current_vllm_config
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from vllm.forward_context import ForwardContext, get_forward_context
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from vllm.logger import logger
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from vllm.model_executor.layers.attention.mla_attention import MLACommonMetadataBuilder
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from vllm.model_executor.layers.linear import UnquantizedLinearMethod
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from vllm.utils.math_utils import cdiv, round_down
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from vllm.v1.attention.backend import AttentionBackend, AttentionCGSupport, MLAAttentionImpl # type: ignore
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from vllm.v1.attention.backends.utils import PAD_SLOT_ID # type: ignore
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from vllm.v1.kv_cache_interface import AttentionSpec, MLAAttentionSpec
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from vllm_ascend.ascend_config import get_ascend_config
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from vllm_ascend.attention.attention_mask import AttentionMaskBuilder
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from vllm_ascend.attention.attention_v1 import AscendAttentionState
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from vllm_ascend.attention.context_parallel.common_cp import AscendPCPMetadata, CPChunkedContextMetadata
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from vllm_ascend.attention.utils import (
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AscendCommonAttentionMetadata,
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ascend_chunked_prefill_workspace_size,
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enable_cp,
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enabling_mlapo,
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maybe_save_kv_layer_to_connector,
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split_decodes_and_prefills,
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trans_rope_weight,
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transdata,
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wait_for_kv_layer_from_connector,
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)
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from vllm_ascend.compilation.acl_graph import (
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get_draft_graph_params,
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get_graph_params,
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update_draft_graph_params_workspaces,
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update_graph_params_workspaces,
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)
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from vllm_ascend.ops.layer_shard_linear import (
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is_hidden_layer,
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post_process_after_loading_for_shard_weight_series,
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reach_layer_for_shard_weight_series,
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register_all_layers_to_shard_weight_series,
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)
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from vllm_ascend.ops.rotary_embedding import get_cos_and_sin_mla
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from vllm_ascend.ops.weight_prefetch import maybe_npu_prefetch
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from vllm_ascend.quantization.methods import AscendW8A8LinearMethod
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from vllm_ascend.utils import ACL_FORMAT_FRACTAL_ND, maybe_trans_nz, weak_ref_tensors
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from vllm_ascend.worker.npu_input_batch import NPUInputBatch
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if TYPE_CHECKING:
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from vllm.v1.core.sched.output import SchedulerOutput
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MAX_O_PROJ_PREFETCH_SIZE = 16 * 1024 * 1024
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BUILD_METADATA_STEP_PREFILL = 0
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BUILD_METADATA_STEP_DECODE = 1
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# token count limits within the mlapo operator
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MLAPO_MAX_SUPPORTED_TOKENS = 1024
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class AscendMLABackend(AttentionBackend):
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accept_output_buffer: bool = True
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@staticmethod
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def get_name() -> str:
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# HACK(Ronald1995): vllm `initialize_kv_cache` method in model runner v2 make
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# attention name assertion, we just set name to FLASH_ATTN to avoid assertion error.
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# rectify this when vllm disable the assertion.
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return "ASCEND_MLA" if not envs_vllm.VLLM_USE_V2_MODEL_RUNNER else "FLASH_ATTN"
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@staticmethod
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def get_builder_cls():
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if enable_cp():
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from vllm_ascend.attention.context_parallel.mla_cp import AscendMlaCPMetadataBuilder
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return AscendMlaCPMetadataBuilder
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return AscendMLAMetadataBuilder
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@staticmethod
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def get_kv_cache_shape(num_blocks: int, block_size: int, num_kv_heads: int, head_size: int) -> tuple[int, ...]:
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return num_blocks, block_size, num_kv_heads, head_size
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@staticmethod
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def get_impl_cls() -> type["MLAAttentionImpl"]:
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if enable_cp():
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from vllm_ascend.attention.context_parallel.mla_cp import AscendMlaCPImpl
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return AscendMlaCPImpl
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return AscendMLAImpl
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@staticmethod
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def get_supported_kernel_block_sizes() -> list[int]:
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return [128]
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@dataclass
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class ChunkedContextMetadata:
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"""
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Metadata for chunked context handling in MLA attention.
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Manages sequence boundaries and workspace for chunked prefill processing.
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"""
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cu_seq_lens: torch.Tensor
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starts: torch.Tensor
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seq_tot: list[int]
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max_seq_lens: list[int]
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workspace: torch.Tensor
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chunk_seq_lens: torch.Tensor
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chunk_seq_lens_npu: torch.Tensor
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@dataclass
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class AscendMLAPrefillMetadata:
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"""Prefill Specific Metadata for Ascend"""
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attn_mask: torch.Tensor
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query_lens: torch.Tensor
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seq_lens: list[int]
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context_lens: torch.Tensor
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input_positions: torch.Tensor
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query_start_loc: torch.Tensor
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block_table: torch.Tensor
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max_query_len: int
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max_seq_lens: int
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chunked_context: ChunkedContextMetadata | CPChunkedContextMetadata | None = None
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sin: torch.Tensor = None
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cos: torch.Tensor = None
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pcp_metadata: AscendPCPMetadata | None = None
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@dataclass
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class AscendMLADecodeMetadata:
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"""Decode-specific metadata for Ascend MLA attention."""
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# Input positions for rotary embeddings since for MLA the rotary
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# position embeddings are applied inside the attention backend
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input_positions: torch.Tensor
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block_table: torch.Tensor
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seq_lens: torch.Tensor
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max_seq_lens: int
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seq_lens_list: list[int]
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actual_seq_lengths_q: list[int] | None = None
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attn_mask: torch.Tensor | None = None
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sin: torch.Tensor = None
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cos: torch.Tensor = None
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cp_seq_len: torch.Tensor = None
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@dataclass
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class AscendMLAMetadata:
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"""Metadata for MLACommon.
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NOTE: Please read the comment at the top of the file before trying to
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understand this class
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"""
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# NOTE(sang): Definition of context_len, query_len, and seq_len.
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# |---------- N-1 iteration --------|
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# |---------------- N iteration ---------------------|
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# |- tokenA -|......................|-- newTokens ---|
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# |---------- context_len ----------|
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# |-------------------- seq_len ---------------------|
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# |-- query_len ---|
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num_actual_tokens_pcp_padded: int
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num_actual_tokens: int # Number of tokens excluding padding.
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slot_mapping: torch.Tensor
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query_start_loc: torch.Tensor
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seq_lens: torch.Tensor
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block_tables: torch.Tensor
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# New for MLA (compared to FlashAttention)
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# For handling prefill decode split
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num_decodes: int
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num_decode_tokens: int
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num_prefills: int
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# For logging.
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num_input_tokens: int = 0 # Number of tokens including padding.
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query_lens: list[int] | None = None
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# The dimension of the attention heads
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head_dim: int | None = None
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attn_mask: torch.Tensor = None
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# chunked prefill by default if no attn_states passed
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attn_state: AscendAttentionState = AscendAttentionState.ChunkedPrefill
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decode: AscendMLADecodeMetadata | None = None
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prefill: AscendMLAPrefillMetadata | None = None
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reshape_cache_event: torch.npu.Event = None
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def __post_init__(self):
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pass
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# supported_head_sizes = AscendMLABackend.get_supported_head_sizes()
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# if self.head_dim is not None and self.head_dim \
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# not in supported_head_sizes:
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# raise ValueError(
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# f"Only {supported_head_sizes} are supported for head_dim,",
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# f"received {self.head_dim}.")
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M = TypeVar("M", bound=AscendMLAMetadata)
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class AscendMLAMetadataBuilder(MLACommonMetadataBuilder[AscendMLAMetadata]):
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"""
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NOTE: Please read the comment at the top of the file before trying to
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understand this class
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"""
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def __init__(
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self,
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kv_cache_spec: MLAAttentionSpec,
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layer_names: list[str],
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vllm_config: VllmConfig,
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device: torch.device,
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metadata_cls: type[AscendMLAMetadata] | None = None,
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supports_dcp_with_varlen: bool = False,
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):
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super().__init__(
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kv_cache_spec,
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layer_names,
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vllm_config,
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device,
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metadata_cls if metadata_cls is not None else AscendMLAMetadata,
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supports_dcp_with_varlen,
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)
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scheduler_config = vllm_config.scheduler_config
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self.block_size = vllm_config.cache_config.block_size
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self.max_blocks = (vllm_config.model_config.max_model_len + self.block_size - 1) // self.block_size
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self.chunked_prefill_enabled = scheduler_config.enable_chunked_prefill
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self.speculative_config = vllm_config.speculative_config
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self.decode_threshold = 1
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if self.speculative_config:
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spec_token_num = self.speculative_config.num_speculative_tokens
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self.decode_threshold += spec_token_num
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assert self.decode_threshold <= 16, (
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f"decode_threshold exceeded \
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npu_fused_infer_attention_score TND layout's limit of 16, \
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got {self.decode_threshold}"
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)
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self.reorder_batch_threshold = self.decode_threshold
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self.rope_dim = self.model_config.hf_text_config.qk_rope_head_dim
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self.cos_cache = None
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self.sin_cache = None
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self.chunk_seq_lens: torch.Tensor = None
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self.cu_seq_lens_cpu: torch.Tensor = None
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self.num_chunks: torch.Tensor = None
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self.max_context_chunk = 0
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self.num_decodes = 0
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self.num_prefills = 0
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self.num_decode_tokens = 0
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self.num_prefill_tokens = 0
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self.context_lens_cpu: torch.Tensor = None
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self.num_actual_tokens: int | None = None
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self.block_table: torch.Tensor = None
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self.slot_mapping: torch.Tensor = None
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self.graph_pad_size = 0
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self.query_lens: torch.Tensor = None
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self.seq_lens: torch.Tensor = None
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self.attn_mask_builder = AttentionMaskBuilder(self.device)
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@staticmethod
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def determine_chunked_prefill_workspace_size(vllm_config: VllmConfig) -> int:
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return ascend_chunked_prefill_workspace_size(vllm_config)
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@classmethod
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def get_cudagraph_support(
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cls: type["AscendMLAMetadataBuilder"],
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vllm_config: VllmConfig,
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kv_cache_spec: AttentionSpec,
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) -> AttentionCGSupport:
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# Explicit override in case the underlying builder specialized this getter.
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# @override omitted only because of mypy limitation due to type variable.
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return AttentionCGSupport.UNIFORM_BATCH
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def reorder_batch(self, input_batch: "NPUInputBatch", scheduler_output: "SchedulerOutput") -> bool:
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# We now want to reorder the batch so that the "decode" requests are at
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# the front and the "prefill" requests are at the using the least amount
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# swaps possible. (NOTE for now we loosely use "decode" to mean requests
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# where attention is likely memory-bound and "prefill" to mean requests
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# where attention is likely compute-bound, TODO(lucas): figure out a
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# better naming here)
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decodes = []
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prefills = []
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for i, req_id in enumerate(input_batch.req_ids):
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num_tokens = scheduler_output.num_scheduled_tokens[req_id]
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if num_tokens <= self.decode_threshold:
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decodes.append(i)
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else:
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prefills.append(i)
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# We hope that this is fairly minimal since decodes
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# should be around for a number of iterations so hopefully they are
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# relatively stationary (and new request are generally appended to the
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# persistent batch so already should be at the back)
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# To achieve this we loop over the decodes in descending order and
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# the prefills in ascending order. We swap decodes from the "back"
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# i.e. past where the last decode should be in the reodorered with
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# prefills from the front of the batch.
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# `decodes` and `prefills` are already in ascending order just based on
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# the above loop
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num_decodes = len(decodes)
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num_prefills = len(prefills)
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first_prefill = 0
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modified_batch = False
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for i in range(1, min(num_decodes, num_prefills) + 1):
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# If the decode is at the "back" of the batch, i, we can swap it
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# with the prefill closest to the front of the batch
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if decodes[num_decodes - i] >= num_decodes:
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input_batch.swap_states(prefills[first_prefill], decodes[num_decodes - i])
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first_prefill += 1
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modified_batch = True
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else:
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break
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# Save for next `build` call
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# TODO(lucas): this is a bit of a hack, we should probably have a
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# better way of doing this
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return modified_batch
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def pad_actual_seq_len_q_mtp_enable_pad(
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self, num_reqs_pad_size, num_reqs, actual_seq_lengths_q, common_attn_metadata
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):
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"""
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Pads actual_seq_lengths_q evenly to not exceed 16 tokens per request
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in order to meet the requirement of npu_fused_infer_attention_score.
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In Torchair scenario, the lengths of the queries must be padded to the same length.
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And npu_fused_infer_attention_score constraint requires the last element must equal to batch_size(num_tokens).
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For example:
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batch_size=36, num_reqs_pad_size=2, num_reqs=16
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By default, each request should have inference 2 token, which means actual_seq_lengths_q should be
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[2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36].
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However, mtp torchair + PD scenario, the actual_seq_lengths_q may be
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[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16] before padding, since the first decode request only has 1 token.
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In order to meet the requirement of npu_fused_infer_attention_score, we need to pad actual_seq_lengths_q
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evenly to not exceed 16 tokens per request.
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after padding actual_seq_lengths_q should be similar to [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,32,36]
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"""
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FIA_SEQ_LEN_LIMIT = 16
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need_padding = (
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num_reqs_pad_size != 0
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and len(common_attn_metadata.actual_seq_lengths_q) > num_reqs
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and common_attn_metadata.actual_seq_lengths_q[num_reqs] - actual_seq_lengths_q[-1] > FIA_SEQ_LEN_LIMIT
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)
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if need_padding:
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padding_seq_len_q = common_attn_metadata.actual_seq_lengths_q[num_reqs : num_reqs + num_reqs_pad_size]
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start_val = actual_seq_lengths_q[-1]
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end_val = padding_seq_len_q[-1]
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num_step = len(padding_seq_len_q)
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interpolated = np.round(np.linspace(start_val, end_val, num_step + 1)[1:]).astype(int).tolist()
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assert interpolated[-1] == end_val
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assert len(interpolated) == len(padding_seq_len_q)
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actual_seq_lengths_q = actual_seq_lengths_q + interpolated
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else:
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actual_seq_lengths_q = (
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actual_seq_lengths_q
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+ common_attn_metadata.actual_seq_lengths_q[num_reqs : num_reqs + num_reqs_pad_size]
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)
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return actual_seq_lengths_q
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def pad_actual_seq_len_q_mtp_disable_pad(self, num_reqs_pad_size, num_reqs, actual_seq_lengths_q):
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"""
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Only use for acl full graph mode.
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Pad the last element of the actual_seq_lengths_q equal to the TND(T) and
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the num of dimensions equal to the batch_size of main model.
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For example:
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batch_size = 8, num_reqs = 4, num_speculative_tokens = 1
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input actual_seq_lengths_q = [1, 2, 4, 5] (the 3rd req was accept a token)
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After padding the actual_seq_lengths_q will be similar to [1, 2, 4, 5, 6, 6, 7, 8]
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"""
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need_padding = num_reqs_pad_size > 0
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if need_padding:
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start_val = actual_seq_lengths_q[-1]
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end_val = num_reqs + num_reqs_pad_size
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num_step = num_reqs_pad_size
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interpolated = np.round(np.linspace(start_val, end_val, num_step + 1)[1:]).astype(int).tolist()
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assert interpolated[-1] == end_val
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assert len(interpolated) == num_reqs_pad_size
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actual_seq_lengths_q = actual_seq_lengths_q + interpolated
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return actual_seq_lengths_q
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def set_num_actual_tokens(
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self,
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common_attn_metadata: AscendCommonAttentionMetadata,
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):
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self.num_actual_tokens = common_attn_metadata.num_actual_tokens
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|
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def build(
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self,
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common_prefix_len: int,
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common_attn_metadata: AscendCommonAttentionMetadata,
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fast_build: bool = False,
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) -> AscendMLAMetadata:
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num_reqs = common_attn_metadata.num_reqs
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query_start_loc = common_attn_metadata.query_start_loc
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query_start_loc_cpu = common_attn_metadata.query_start_loc_cpu
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self.num_decodes, self.num_prefills, self.num_decode_tokens, self.num_prefill_tokens = (
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split_decodes_and_prefills(common_attn_metadata, decode_threshold=self.decode_threshold)
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)
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self.set_num_actual_tokens(common_attn_metadata)
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assert self.num_decodes + self.num_prefills == num_reqs
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assert self.num_decode_tokens + self.num_prefill_tokens == common_attn_metadata.num_actual_tokens
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# NOTE: Currently, MTP-fullgraph is incompatibility pcp
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self.slot_mapping = common_attn_metadata.slot_mapping[: self.num_actual_tokens]
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query_seq_lens_cpu = query_start_loc_cpu[1:] - query_start_loc_cpu[:-1]
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self.query_lens = query_seq_lens_cpu[:num_reqs]
|
|
self.seq_lens = common_attn_metadata.seq_lens_cpu[:num_reqs]
|
|
|
|
self.graph_pad_size = common_attn_metadata.graph_pad_size
|
|
block_table_size = self.get_block_table_size(common_attn_metadata, BUILD_METADATA_STEP_PREFILL)
|
|
self.block_table = common_attn_metadata.block_table_tensor[:block_table_size]
|
|
|
|
prefill_metadata = None
|
|
if self.num_prefills > 0:
|
|
prefill_metadata = self.build_prefill_metadata(common_prefix_len, common_attn_metadata)
|
|
|
|
decode_metadata = None
|
|
if self.num_decodes > 0:
|
|
decode_metadata = self.build_decode_metadata(common_prefix_len, common_attn_metadata)
|
|
return self.metadata_cls( # type: ignore
|
|
num_actual_tokens_pcp_padded=self.num_actual_tokens,
|
|
num_input_tokens=common_attn_metadata.num_input_tokens,
|
|
num_actual_tokens=self.num_actual_tokens,
|
|
query_lens=self.query_lens.tolist(),
|
|
slot_mapping=self.slot_mapping,
|
|
head_dim=self.model_config.get_head_size(),
|
|
num_decodes=self.num_decodes,
|
|
num_decode_tokens=self.num_decode_tokens,
|
|
num_prefills=self.num_prefills,
|
|
attn_mask=self.attn_mask_builder.get_final_mla_mask(self.model_config),
|
|
attn_state=common_attn_metadata.attn_state,
|
|
prefill=prefill_metadata,
|
|
decode=decode_metadata,
|
|
query_start_loc=query_start_loc,
|
|
block_tables=self.block_table,
|
|
seq_lens=self.seq_lens,
|
|
)
|
|
|
|
def build_chunked_metadata(
|
|
self,
|
|
common_prefix_len: int,
|
|
common_attn_metadata: AscendCommonAttentionMetadata,
|
|
):
|
|
if not self.chunked_prefill_enabled:
|
|
return None
|
|
num_reqs = common_attn_metadata.num_reqs
|
|
|
|
num_computed_tokens_cpu = self.seq_lens - self.query_lens
|
|
reqs_start = self.num_decodes # prefill_start
|
|
|
|
self.context_lens_cpu = num_computed_tokens_cpu[reqs_start:num_reqs]
|
|
max_context_len_cpu = self.context_lens_cpu.max().item()
|
|
if not max_context_len_cpu > 0:
|
|
return None
|
|
num_prefills_with_context_cpu = (self.context_lens_cpu > 0).sum().item()
|
|
self.max_context_chunk = self.chunked_prefill_workspace_size // num_prefills_with_context_cpu
|
|
self.max_context_chunk = round_down(self.max_context_chunk, self.block_size)
|
|
|
|
assert self.max_context_chunk > 0
|
|
self.num_chunks = cdiv(max_context_len_cpu, self.max_context_chunk)
|
|
chunk_starts = (
|
|
torch.arange(self.num_chunks, dtype=torch.int32).unsqueeze(1).expand(-1, self.num_prefills)
|
|
* self.max_context_chunk
|
|
)
|
|
chunk_ends = torch.min(self.context_lens_cpu.unsqueeze(0), chunk_starts + self.max_context_chunk)
|
|
self.chunk_seq_lens = (chunk_ends - chunk_starts).clamp(min=0)
|
|
self.cu_seq_lens_cpu = torch.zeros(self.num_chunks, self.num_prefills + 1, dtype=torch.int32, pin_memory=True)
|
|
torch.cumsum(self.chunk_seq_lens, dim=1, out=self.cu_seq_lens_cpu[:, 1:], dtype=torch.int32)
|
|
return ChunkedContextMetadata(
|
|
cu_seq_lens=self.cu_seq_lens_cpu.pin_memory().to(self.device, non_blocking=True),
|
|
starts=chunk_starts.pin_memory().to(self.device, non_blocking=True),
|
|
seq_tot=self.chunk_seq_lens.sum(dim=1).tolist(),
|
|
max_seq_lens=self.chunk_seq_lens.max(dim=1).values.tolist(),
|
|
chunk_seq_lens=self.chunk_seq_lens,
|
|
chunk_seq_lens_npu=self.chunk_seq_lens.npu(),
|
|
workspace=self.chunked_prefill_workspace,
|
|
)
|
|
|
|
def get_block_table_size(self, common_attn_metadata: AscendCommonAttentionMetadata, build_metadata_step: int):
|
|
if build_metadata_step == BUILD_METADATA_STEP_PREFILL:
|
|
# If graph_pad_size > -1, mean is running in fullgraph mode.
|
|
# NOTE: Maybe this block_table change can be removed when graph_pad_size > 1.
|
|
if (
|
|
self.graph_pad_size > common_attn_metadata.num_reqs
|
|
and self.speculative_config.disable_padded_drafter_batch
|
|
):
|
|
return self.graph_pad_size
|
|
return common_attn_metadata.num_reqs
|
|
return self.num_decodes
|
|
|
|
def build_prefill_metadata(
|
|
self,
|
|
common_prefix_len: int,
|
|
common_attn_metadata: AscendCommonAttentionMetadata,
|
|
) -> AscendMLAPrefillMetadata:
|
|
query_start_loc = common_attn_metadata.query_start_loc
|
|
|
|
# NOTE: Currently, MTP-fullgraph is incompatibility pcp
|
|
input_positions = common_attn_metadata.positions[: self.num_actual_tokens].long()
|
|
|
|
chunked_context_metadata = self.build_chunked_metadata(common_prefix_len, common_attn_metadata)
|
|
reqs_start = self.num_decodes # prefill_start
|
|
tokens_start = self.num_decode_tokens
|
|
max_query_len = self.query_lens[reqs_start:].max().item()
|
|
max_seq_lens = self.seq_lens[reqs_start:].max().item()
|
|
prefill_query_start_loc = query_start_loc[reqs_start:] - query_start_loc[reqs_start]
|
|
|
|
prefill_input_positions = input_positions[tokens_start:]
|
|
cos, sin = get_cos_and_sin_mla(prefill_input_positions)
|
|
return AscendMLAPrefillMetadata(
|
|
attn_mask=self.attn_mask_builder.get_final_mla_mask(self.model_config),
|
|
query_lens=self.query_lens[reqs_start:].to(torch.int32),
|
|
seq_lens=self.seq_lens,
|
|
context_lens=self.seq_lens[reqs_start:],
|
|
input_positions=prefill_input_positions,
|
|
block_table=self.block_table[reqs_start:, ...],
|
|
max_query_len=max_query_len,
|
|
max_seq_lens=max_seq_lens,
|
|
query_start_loc=prefill_query_start_loc,
|
|
chunked_context=chunked_context_metadata,
|
|
sin=sin,
|
|
cos=cos,
|
|
)
|
|
|
|
def build_decode_metadata(
|
|
self,
|
|
common_prefix_len: int,
|
|
common_attn_metadata: AscendCommonAttentionMetadata,
|
|
) -> AscendMLADecodeMetadata:
|
|
num_reqs = common_attn_metadata.num_reqs
|
|
query_start_loc_cpu = common_attn_metadata.query_start_loc_cpu
|
|
|
|
input_positions = common_attn_metadata.positions[: self.num_actual_tokens].long()
|
|
|
|
# Notice that num_decodes != num_decode_tokens in SpecDecoding Scenario
|
|
actual_seq_lengths_q = query_start_loc_cpu[1 : self.num_decodes + 1].tolist()
|
|
max_seq_lens = self.seq_lens[: self.num_decodes].max().item()
|
|
self.seq_lens = self.seq_lens[: self.num_decodes]
|
|
input_positions = input_positions[: self.num_decode_tokens]
|
|
|
|
block_table_size = self.get_block_table_size(common_attn_metadata, BUILD_METADATA_STEP_DECODE)
|
|
self.block_table = self.block_table[:block_table_size]
|
|
|
|
# NOTE: Currently, MTP-fullgraph is incompatibility pcp
|
|
# NOTE: Maybe this block_table change can be removed when graph_pad_size > 1.
|
|
if self.graph_pad_size > self.num_decodes and self.speculative_config.disable_padded_drafter_batch:
|
|
self.block_table = self.block_table[: self.graph_pad_size, ...]
|
|
seq_lens_list = self.seq_lens.tolist()
|
|
|
|
cp_seq_len = None
|
|
|
|
if self.graph_pad_size > num_reqs:
|
|
if self.speculative_config.disable_padded_drafter_batch:
|
|
num_reqs_pad_size = self.graph_pad_size - num_reqs
|
|
actual_seq_lengths_q = self.pad_actual_seq_len_q_mtp_disable_pad(
|
|
num_reqs_pad_size, num_reqs, actual_seq_lengths_q
|
|
)
|
|
seq_lens_list = seq_lens_list + [0] * (self.graph_pad_size - self.num_decodes)
|
|
num_block_pad_size = self.graph_pad_size - self.block_table.shape[0]
|
|
if num_block_pad_size > 0:
|
|
block_table_padding = torch.zeros(
|
|
(num_block_pad_size,) + self.block_table.shape[1:],
|
|
dtype=self.block_table.dtype,
|
|
device=self.block_table.device,
|
|
)
|
|
self.block_table = torch.cat([self.block_table, block_table_padding], dim=0)
|
|
else:
|
|
num_token_pad_size = self.graph_pad_size - self.num_decode_tokens
|
|
num_reqs_pad_size = self.graph_pad_size // common_attn_metadata.decode_token_per_req - num_reqs
|
|
num_block_table_pad_size = (
|
|
self.graph_pad_size // common_attn_metadata.decode_token_per_req - self.num_decodes
|
|
)
|
|
seq_lens_list = self.seq_lens.tolist() + [0] * num_reqs_pad_size
|
|
slot_padding = torch.full(
|
|
(num_token_pad_size,), PAD_SLOT_ID, dtype=self.slot_mapping.dtype, device=self.slot_mapping.device
|
|
)
|
|
self.slot_mapping = torch.cat([self.slot_mapping, slot_padding])
|
|
block_table_padding = torch.zeros(
|
|
(num_block_table_pad_size,) + self.block_table.shape[1:],
|
|
dtype=self.block_table.dtype,
|
|
device=self.block_table.device,
|
|
)
|
|
self.block_table = torch.cat([self.block_table, block_table_padding], dim=0)
|
|
position_padding = torch.zeros(
|
|
num_token_pad_size, dtype=input_positions.dtype, device=input_positions.device
|
|
)
|
|
input_positions = torch.cat([input_positions, position_padding])
|
|
actual_seq_lengths_q = self.pad_actual_seq_len_q_mtp_enable_pad(
|
|
num_reqs_pad_size, num_reqs, actual_seq_lengths_q, common_attn_metadata
|
|
)
|
|
|
|
cos, sin = get_cos_and_sin_mla(input_positions, use_cache=True)
|
|
decode_metadata = AscendMLADecodeMetadata(
|
|
input_positions=input_positions,
|
|
block_table=self.block_table,
|
|
seq_lens=self.seq_lens,
|
|
seq_lens_list=seq_lens_list,
|
|
max_seq_lens=max_seq_lens,
|
|
attn_mask=self.attn_mask_builder.get_splitfuse_attn_mask(),
|
|
actual_seq_lengths_q=actual_seq_lengths_q,
|
|
sin=sin[: self.num_decode_tokens, ...],
|
|
cos=cos[: self.num_decode_tokens, ...],
|
|
cp_seq_len=cp_seq_len,
|
|
)
|
|
return decode_metadata
|
|
|
|
def build_for_graph_capture(
|
|
self,
|
|
common_attn_metadata: AscendCommonAttentionMetadata,
|
|
attn_state: AscendAttentionState = AscendAttentionState.DecodeOnly,
|
|
):
|
|
if attn_state in {AscendAttentionState.DecodeOnly, AscendAttentionState.SpecDecoding}:
|
|
attn_metadata = self.build(
|
|
common_prefix_len=0,
|
|
common_attn_metadata=common_attn_metadata,
|
|
)
|
|
else:
|
|
raise NotImplementedError(
|
|
"Currently we only support building dummy metadata for DecodeOnly and SpecDecoding state"
|
|
)
|
|
|
|
attn_metadata.attn_state = attn_state
|
|
return attn_metadata
|
|
|
|
|
|
class DecodeMLAPreprocessResult(NamedTuple):
|
|
ql_nope: torch.Tensor | None = None
|
|
q_pe: torch.Tensor | None = None
|
|
k_nope: torch.Tensor | None = None
|
|
k_pe: torch.Tensor | None = None
|
|
decode_q_wo_k_up: torch.Tensor | None = None
|
|
|
|
|
|
class PrefillMLAPreprocessResult(NamedTuple):
|
|
q_nope: torch.Tensor | None = None
|
|
q_pe: torch.Tensor | None = None
|
|
k_nope: torch.Tensor | None = None
|
|
k_pe: torch.Tensor | None = None
|
|
value: torch.Tensor | None = None
|
|
|
|
|
|
class AscendMLAImpl(MLAAttentionImpl):
|
|
"""
|
|
NOTE: Please read the comment at the top of the file before trying to
|
|
understand this class
|
|
"""
|
|
|
|
def __init__(
|
|
self,
|
|
num_heads: int,
|
|
head_size: int,
|
|
scale: float,
|
|
num_kv_heads: int,
|
|
alibi_slopes: list[float] | None,
|
|
sliding_window: int | None,
|
|
kv_cache_dtype: str,
|
|
logits_soft_cap: float | None,
|
|
attn_type: str,
|
|
kv_sharing_target_layer_name: str | None,
|
|
**kwargs,
|
|
):
|
|
self.vllm_config = get_current_vllm_config()
|
|
self.num_heads = num_heads
|
|
self.head_size = head_size
|
|
self.scale = float(scale)
|
|
self.num_kv_heads = num_kv_heads
|
|
self.kv_cache_dtype = kv_cache_dtype
|
|
|
|
# MLA Args
|
|
self.q_lora_rank = kwargs["q_lora_rank"]
|
|
self.kv_lora_rank = kwargs["kv_lora_rank"]
|
|
self.qk_nope_head_dim = kwargs["qk_nope_head_dim"]
|
|
self.qk_rope_head_dim = kwargs["qk_rope_head_dim"]
|
|
self.qk_head_dim = kwargs["qk_head_dim"]
|
|
self.v_head_dim = kwargs["v_head_dim"]
|
|
self.rotary_emb = kwargs["rotary_emb"]
|
|
self.fused_qkv_a_proj = kwargs.get("fused_qkv_a_proj")
|
|
self.q_proj = kwargs["q_proj"] if self.q_lora_rank is None else kwargs["q_b_proj"]
|
|
self.kv_b_proj = kwargs["kv_b_proj"]
|
|
self.o_proj = kwargs["o_proj"]
|
|
self.vllm_config = get_current_vllm_config()
|
|
self.kv_a_proj_with_mqa = kwargs.get("kv_a_proj_with_mqa")
|
|
self.kv_a_layernorm = kwargs.get("kv_a_layernorm")
|
|
self.q_a_layernorm = kwargs.get("q_a_layernorm")
|
|
self.num_queries_per_kv = self.num_heads // self.num_kv_heads
|
|
|
|
ascend_config = get_ascend_config()
|
|
self.enable_shared_expert_dp = ascend_config.enable_shared_expert_dp
|
|
self.enable_prefetch = ascend_config.weight_prefetch_config.enabled
|
|
self.enable_kv_nz = ascend_config.enable_kv_nz
|
|
|
|
self.ring_mla_mask_size = 512
|
|
|
|
self.speculative_config = self.vllm_config.speculative_config
|
|
self.enable_mlapo = enabling_mlapo(self.vllm_config)
|
|
|
|
self.is_kv_producer = (
|
|
self.vllm_config.kv_transfer_config is not None and self.vllm_config.kv_transfer_config.is_kv_producer
|
|
)
|
|
self.layer_sharding_kwargs = []
|
|
for layer_name in get_ascend_config().layer_sharding or []:
|
|
if layer_name in kwargs:
|
|
self.layer_sharding_kwargs.append(kwargs[layer_name])
|
|
else:
|
|
logger.warning_once(
|
|
f"Layer '{layer_name}' not found in kwargs for layer sharding, skipping sharding configuration"
|
|
)
|
|
register_all_layers_to_shard_weight_series(self.layer_sharding_kwargs)
|
|
|
|
@staticmethod
|
|
def update_graph_params(
|
|
update_stream,
|
|
forward_context,
|
|
num_tokens,
|
|
vllm_config=None,
|
|
speculative_config=None,
|
|
num_dcp_pcp_tokens=None,
|
|
draft_attn_metadatas=None,
|
|
):
|
|
if forward_context.is_draft_model:
|
|
graph_params = get_draft_graph_params()
|
|
else:
|
|
graph_params = get_graph_params()
|
|
# FIXME: Behold! We are using a temporary hack here to update the args
|
|
# for each layer's attention op in the graph.
|
|
with torch.npu.stream(update_stream):
|
|
for key, param, handle, event in zip(
|
|
forward_context.attn_metadata,
|
|
graph_params.attn_params[num_tokens],
|
|
graph_params.handles[num_tokens],
|
|
graph_params.events[num_tokens],
|
|
):
|
|
(
|
|
q_nope,
|
|
k_nope,
|
|
q_pe,
|
|
k_pe,
|
|
num_heads,
|
|
num_kv_heads,
|
|
input_layout,
|
|
attn_mask,
|
|
sparse_mode,
|
|
scale,
|
|
block_table,
|
|
block_size,
|
|
seq_lens_list,
|
|
actual_seq_lengths,
|
|
attn_output,
|
|
softmax_lse,
|
|
) = param
|
|
seq_lens_list = forward_context.attn_metadata[key].decode.seq_lens_list
|
|
if speculative_config and speculative_config.method == "mtp" and not forward_context.is_draft_model:
|
|
actual_seq_lengths = forward_context.attn_metadata[key].decode.actual_seq_lengths_q
|
|
spec_multiple = speculative_config.num_speculative_tokens + 1
|
|
seq_lens_list = seq_lens_list + [0] * (num_tokens // spec_multiple - len(seq_lens_list))
|
|
actual_seq_lengths = [spec_multiple * (i + 1) for i in range(num_tokens // spec_multiple)]
|
|
elif forward_context.is_draft_model:
|
|
actual_seq_lengths = forward_context.attn_metadata[key].decode.actual_seq_lengths_q
|
|
block_table = forward_context.attn_metadata[key].decode.block_table
|
|
# TODO: This is a hack and should be fixed in the future.
|
|
if speculative_config.disable_padded_drafter_batch:
|
|
block_table = block_table[: len(actual_seq_lengths)]
|
|
seq_lens_list = seq_lens_list + [0] * (len(actual_seq_lengths) - len(seq_lens_list))
|
|
else:
|
|
seq_lens_list = seq_lens_list + [0] * (num_tokens - len(seq_lens_list))
|
|
torch.npu.graph_task_update_begin(update_stream, handle)
|
|
|
|
torch_npu.npu_fused_infer_attention_score.out(
|
|
q_nope,
|
|
k_nope,
|
|
k_nope,
|
|
query_rope=q_pe,
|
|
key_rope=k_pe,
|
|
num_heads=num_heads,
|
|
num_key_value_heads=num_kv_heads,
|
|
input_layout=input_layout,
|
|
atten_mask=attn_mask,
|
|
sparse_mode=sparse_mode,
|
|
scale=scale,
|
|
antiquant_mode=0,
|
|
antiquant_scale=None,
|
|
block_table=block_table,
|
|
block_size=block_size,
|
|
actual_seq_lengths_kv=seq_lens_list,
|
|
actual_seq_lengths=actual_seq_lengths,
|
|
workspace=graph_params.workspaces.get(num_tokens),
|
|
out=[attn_output, softmax_lse],
|
|
)
|
|
torch.npu.graph_task_update_end(update_stream)
|
|
|
|
event.record(update_stream)
|
|
|
|
def _v_up_proj(self, x):
|
|
# Convert from (N, B, L)/(N, B, 1, L) to (N, B, L)
|
|
x = x.view(self.num_heads, -1, self.kv_lora_rank)
|
|
# Multiply (N, B, L) x (N, L, V) -> (B, N, V)
|
|
x = torch_npu.npu_transpose_batchmatmul(x, self.W_UV, perm_y=(1, 0, 2))
|
|
# Convert from (B, N, V) to (B, N * V)
|
|
x = x.reshape(-1, self.num_heads * self.v_head_dim)
|
|
return x
|
|
|
|
# Return `ql_nope`, `q_pe`
|
|
def _q_proj_and_k_up_proj(self, x):
|
|
q_nope, q_pe = (
|
|
self.q_proj(x)[0]
|
|
.view(-1, self.num_heads, self.qk_head_dim)
|
|
.split([self.qk_nope_head_dim, self.qk_rope_head_dim], dim=-1)
|
|
)
|
|
|
|
# Convert from (B, N, P) to (N, B, P)
|
|
q_nope = q_nope.transpose(0, 1)
|
|
# Multiply (N, B, P) x (N, P, L) -> (N, B, L)
|
|
ql_nope = torch.bmm(q_nope, self.W_UK_T)
|
|
# Convert from (N, B, L) to (B, N, L)
|
|
return ql_nope.transpose(0, 1), q_pe
|
|
|
|
def process_weights_after_loading(self, act_dtype: torch.dtype):
|
|
# NOTE: We currently do not support quant kv_b_proj.
|
|
assert isinstance(self.kv_b_proj.quant_method, UnquantizedLinearMethod)
|
|
# NOTE: Weight will be reshaped next, we need to revert and transpose it.
|
|
kv_b_proj_weight = torch_npu.npu_format_cast(self.kv_b_proj.weight.data, ACL_FORMAT_FRACTAL_ND).T
|
|
assert kv_b_proj_weight.shape == (
|
|
self.kv_lora_rank,
|
|
self.num_heads * (self.qk_nope_head_dim + self.v_head_dim),
|
|
), (
|
|
f"{kv_b_proj_weight.shape=}, "
|
|
f"{self.kv_lora_rank=}, "
|
|
f"{self.num_heads=}, "
|
|
f"{self.qk_nope_head_dim=}, "
|
|
f"{self.v_head_dim=}"
|
|
)
|
|
kv_b_proj_weight = kv_b_proj_weight.view(
|
|
self.kv_lora_rank,
|
|
self.num_heads,
|
|
self.qk_nope_head_dim + self.v_head_dim,
|
|
)
|
|
|
|
W_UK, W_UV = kv_b_proj_weight.split([self.qk_nope_head_dim, self.v_head_dim], dim=-1)
|
|
|
|
# Convert from (L, N, V) to (N, L, V)
|
|
self.W_UV = W_UV.transpose(0, 1).contiguous()
|
|
# Convert from (L, N, P) to (N, P, L)
|
|
self.W_UK_T = W_UK.permute(1, 2, 0).contiguous()
|
|
|
|
# TODO(zzzzwwjj): Currently, torch.ops._C_ascend.batch_matmul_transpose cannot support weight nz
|
|
# self.W_UV = maybe_trans_nz(self.W_UV)
|
|
|
|
if self.enable_mlapo:
|
|
# Currently mlapo only supports W8A8 quantization in MLA scenario
|
|
# TODO(whx): modify this limitation when mlapo supports floating point
|
|
if self.fused_qkv_a_proj is None or not isinstance(
|
|
getattr(self.fused_qkv_a_proj.quant_method, "quant_method", None), AscendW8A8LinearMethod
|
|
):
|
|
self.enable_mlapo = False
|
|
logger.warning_once(
|
|
"Currently mlapo only supports W8A8 quantization in MLA scenario."
|
|
"Some layers in your model are not quantized with W8A8,"
|
|
"thus mlapo is disabled for these layers."
|
|
)
|
|
if self.enable_mlapo:
|
|
self._process_weights_for_fused_mlapo(act_dtype)
|
|
else:
|
|
# if mlapo, W_UK_T can't trans nz
|
|
self.W_UK_T = maybe_trans_nz(self.W_UK_T)
|
|
|
|
for layer in self.layer_sharding_kwargs or []:
|
|
if is_hidden_layer(layer):
|
|
post_process_after_loading_for_shard_weight_series(layer)
|
|
|
|
def _process_weights_for_fused_mlapo(self, act_dtype: torch.dtype):
|
|
kv_a_proj_wt = self.fused_qkv_a_proj.weight.data[..., self.q_lora_rank :].contiguous() # type: ignore[union-attr]
|
|
q_a_proj_wt = self.fused_qkv_a_proj.weight.data[..., : self.q_lora_rank].contiguous() # type: ignore[union-attr]
|
|
kv_a_proj_wt = kv_a_proj_wt.t().contiguous()
|
|
kv_a_proj_wt = trans_rope_weight(kv_a_proj_wt, self.qk_rope_head_dim)
|
|
kv_a_proj_wt = kv_a_proj_wt.t().contiguous()
|
|
wd_qkv = torch.cat((kv_a_proj_wt, q_a_proj_wt), dim=-1)
|
|
wd_qkv = wd_qkv.t().contiguous()
|
|
wd_qkv = transdata(wd_qkv, block_size=(16, 32)).unsqueeze(0).contiguous()
|
|
self.wd_qkv = torch_npu.npu_format_cast(wd_qkv, 29)
|
|
|
|
kv_a_proj_deq_scl = self.fused_qkv_a_proj.deq_scale[self.q_lora_rank :].contiguous() # type: ignore[union-attr]
|
|
q_a_proj_deq_scl = self.fused_qkv_a_proj.deq_scale[: self.q_lora_rank].contiguous() # type: ignore[union-attr]
|
|
kv_a_proj_deq_scl = kv_a_proj_deq_scl.reshape(self.kv_lora_rank + self.qk_rope_head_dim, -1).contiguous()
|
|
kv_a_proj_deq_scl = trans_rope_weight(kv_a_proj_deq_scl, self.qk_rope_head_dim)
|
|
kv_a_proj_deq_scl = kv_a_proj_deq_scl.view(self.kv_lora_rank + self.qk_rope_head_dim).contiguous()
|
|
self.deq_scale_qkv = torch.cat((kv_a_proj_deq_scl, q_a_proj_deq_scl), dim=-1).contiguous()
|
|
|
|
kv_a_proj_qt_bias = self.fused_qkv_a_proj.quant_bias[self.q_lora_rank :].contiguous() # type: ignore[union-attr]
|
|
q_a_proj_qt_bias = self.fused_qkv_a_proj.quant_bias[: self.q_lora_rank].contiguous() # type: ignore[union-attr]
|
|
kv_a_proj_qt_bias = kv_a_proj_qt_bias.reshape(self.kv_lora_rank + self.qk_rope_head_dim, -1).contiguous()
|
|
kv_a_proj_qt_bias = trans_rope_weight(kv_a_proj_qt_bias, self.qk_rope_head_dim)
|
|
kv_a_proj_qt_bias = kv_a_proj_qt_bias.view(self.kv_lora_rank + self.qk_rope_head_dim).contiguous()
|
|
self.quant_bias_qkv = torch.cat((kv_a_proj_qt_bias, q_a_proj_qt_bias), dim=-1).contiguous()
|
|
|
|
wu_q = self.q_proj.weight.data
|
|
wu_q = wu_q.t().reshape(self.num_heads, self.qk_nope_head_dim + self.qk_rope_head_dim, -1)
|
|
wu_q = trans_rope_weight(wu_q, self.qk_rope_head_dim)
|
|
wu_q = wu_q.reshape(self.num_heads * (self.qk_nope_head_dim + self.qk_rope_head_dim), -1)
|
|
wu_q = transdata(wu_q, block_size=(16, 32)).unsqueeze(0).contiguous()
|
|
self.wu_q = torch_npu.npu_format_cast(wu_q, 29)
|
|
|
|
qb_deq_scl = self.q_proj.deq_scale.data
|
|
qb_deq_scl = qb_deq_scl.reshape(self.num_heads, self.qk_nope_head_dim + self.qk_rope_head_dim, -1)
|
|
qb_deq_scl = trans_rope_weight(qb_deq_scl, self.qk_rope_head_dim)
|
|
self.qb_deq_scl = qb_deq_scl.reshape(self.num_heads * (self.qk_nope_head_dim + self.qk_rope_head_dim))
|
|
|
|
qb_qt_bias = self.q_proj.quant_bias.data
|
|
qb_qt_bias = qb_qt_bias.reshape(self.num_heads, self.qk_nope_head_dim + self.qk_rope_head_dim, -1)
|
|
qb_qt_bias = trans_rope_weight(qb_qt_bias, self.qk_rope_head_dim)
|
|
self.qb_qt_bias = qb_qt_bias.reshape(self.num_heads * (self.qk_nope_head_dim + self.qk_rope_head_dim))
|
|
|
|
device = self.q_proj.weight.device
|
|
self.gamma1 = self.q_a_layernorm.weight.data # type: ignore[union-attr]
|
|
self.beta1 = torch.zeros_like(self.gamma1) if (_bias := self.q_a_layernorm.bias) is None else _bias.data # type: ignore[union-attr]
|
|
self.gamma2 = self.kv_a_layernorm.weight.data # type: ignore[union-attr]
|
|
self.quant_scale0 = self.fused_qkv_a_proj.input_scale.data # type: ignore[union-attr]
|
|
self.quant_offset0 = self.fused_qkv_a_proj.input_offset.data # type: ignore[union-attr]
|
|
self.quant_scale1 = self.q_proj.input_scale.data
|
|
self.quant_offset1 = self.q_proj.input_offset.data
|
|
self.ctkv_scale = torch.tensor([1], dtype=act_dtype, device=device)
|
|
self.q_nope_scale = torch.tensor([1], dtype=act_dtype, device=device)
|
|
|
|
# On KV consumers (decode-only) MLAPO uses the transformed weights built above;
|
|
# the original fused_qkv_a_proj/q_proj weights and quant params are no longer
|
|
# referenced, so drop them to save memory.
|
|
if (
|
|
self.vllm_config.kv_transfer_config is not None
|
|
and self.vllm_config.kv_transfer_config.is_kv_consumer
|
|
and self.vllm_config.scheduler_config.max_num_batched_tokens <= MLAPO_MAX_SUPPORTED_TOKENS
|
|
):
|
|
self.fused_qkv_a_proj.weight = None # type: ignore[union-attr]
|
|
self.fused_qkv_a_proj.deq_scale = None # type: ignore[union-attr]
|
|
self.fused_qkv_a_proj.quant_bias = None # type: ignore[union-attr]
|
|
self.q_proj.weight = None
|
|
self.q_proj.deq_scale = None
|
|
self.q_proj.quant_bias = None
|
|
torch.npu.empty_cache()
|
|
|
|
def get_context_seq_len_npu(self, index: int, attn_metadata: AscendMLAMetadata):
|
|
prefill_metadata = attn_metadata.prefill
|
|
assert prefill_metadata is not None
|
|
assert prefill_metadata.chunked_context is not None
|
|
assert prefill_metadata.chunked_context.chunk_seq_lens_npu is not None
|
|
iters = len(prefill_metadata.chunked_context.seq_tot)
|
|
assert 0 <= index < iters
|
|
return prefill_metadata.chunked_context.chunk_seq_lens_npu[index]
|
|
|
|
def _reorg_kvcache(
|
|
self,
|
|
kv_c_normed: torch.Tensor,
|
|
k_pe: torch.Tensor,
|
|
chunked_context: CPChunkedContextMetadata,
|
|
chunk_idx: int,
|
|
toks: int,
|
|
) -> tuple[torch.Tensor, torch.Tensor]:
|
|
return kv_c_normed, k_pe
|
|
|
|
def _compute_prefill_context(
|
|
self,
|
|
q_nope: torch.Tensor,
|
|
q_pe: torch.Tensor,
|
|
kv_c_and_k_pe_cache: tuple[torch.Tensor],
|
|
rope_dim: int,
|
|
attn_metadata: AscendMLAMetadata,
|
|
prefix_output: torch.Tensor,
|
|
prefix_lse: torch.Tensor,
|
|
):
|
|
assert len(kv_c_and_k_pe_cache) > 1
|
|
prefill_metadata = attn_metadata.prefill
|
|
if prefill_metadata is None or prefill_metadata.chunked_context is None:
|
|
return prefix_output, prefix_lse
|
|
|
|
iters = len(prefill_metadata.chunked_context.seq_tot)
|
|
|
|
current_seq_len = torch.tensor(prefill_metadata.query_lens, dtype=torch.int32)
|
|
cache_kv_c = kv_c_and_k_pe_cache[0]
|
|
cache_k_pe = kv_c_and_k_pe_cache[1]
|
|
num_heads = cache_k_pe.size(2)
|
|
latent_kv_dim = kv_c_and_k_pe_cache[0].size(-1)
|
|
for i in range(iters):
|
|
toks = prefill_metadata.chunked_context.seq_tot[i]
|
|
# chunk_seq_lens will be padded when pcp&dcp
|
|
context_seq_len = prefill_metadata.chunked_context.chunk_seq_lens[i]
|
|
seq_len = torch.stack([current_seq_len, context_seq_len])
|
|
context_seq_len_npu = self.get_context_seq_len_npu(i, attn_metadata)
|
|
kv_c_normed = torch.empty(toks, num_heads, latent_kv_dim, dtype=q_nope.dtype, device=q_nope.device)
|
|
k_pe = torch.empty(toks, num_heads, rope_dim, dtype=q_nope.dtype, device=q_nope.device)
|
|
|
|
torch_npu.atb.npu_paged_cache_load(
|
|
cache_kv_c,
|
|
cache_k_pe,
|
|
prefill_metadata.block_table,
|
|
context_seq_len_npu,
|
|
seq_starts=prefill_metadata.chunked_context.starts[i],
|
|
key=kv_c_normed,
|
|
value=k_pe,
|
|
)
|
|
kv_c_normed, k_pe = self._reorg_kvcache(
|
|
kv_c_normed,
|
|
k_pe,
|
|
chunked_context=prefill_metadata.chunked_context,
|
|
chunk_idx=i,
|
|
toks=toks,
|
|
)
|
|
kv_c_normed = kv_c_normed.squeeze()
|
|
kv_nope = self.kv_b_proj(kv_c_normed)[0].view(-1, self.num_heads, self.qk_nope_head_dim + self.v_head_dim)
|
|
k_nope, v = kv_nope.split([self.qk_nope_head_dim, self.v_head_dim], dim=-1)
|
|
k_pe = k_pe.expand((*k_nope.shape[:-1], -1))
|
|
|
|
mask = attn_metadata.attn_mask
|
|
torch_npu.atb.npu_ring_mla(
|
|
q_nope=q_nope,
|
|
q_rope=q_pe,
|
|
k_nope=k_nope,
|
|
k_rope=k_pe,
|
|
value=v,
|
|
mask=mask,
|
|
seqlen=seq_len,
|
|
head_num=self.num_heads,
|
|
kv_head_num=self.num_heads,
|
|
pre_out=prefix_output,
|
|
prev_lse=prefix_lse,
|
|
qk_scale=self.scale,
|
|
kernel_type="kernel_type_high_precision",
|
|
mask_type="no_mask",
|
|
input_layout="type_bsnd",
|
|
calc_type="calc_type_default",
|
|
output=prefix_output,
|
|
softmax_lse=prefix_lse,
|
|
)
|
|
return prefix_output, prefix_lse
|
|
|
|
def _forward_prefill(
|
|
self,
|
|
q_nope: torch.Tensor,
|
|
q_pe: torch.Tensor,
|
|
k_nope: torch.Tensor,
|
|
k_pe: torch.Tensor,
|
|
value: torch.Tensor,
|
|
kv_c_and_k_pe_cache: tuple[torch.Tensor],
|
|
attn_metadata: AscendMLAMetadata,
|
|
) -> torch.Tensor:
|
|
assert attn_metadata.prefill is not None
|
|
assert len(kv_c_and_k_pe_cache) > 1
|
|
num_tokens = q_nope.size(0)
|
|
attn_output = torch.empty(num_tokens, self.num_heads, self.v_head_dim, dtype=q_nope.dtype, device=q_nope.device)
|
|
attn_lse = torch.empty(self.num_heads, num_tokens, dtype=torch.float32, device=q_nope.device)
|
|
torch_npu.atb.npu_ring_mla(
|
|
q_nope=q_nope,
|
|
q_rope=q_pe,
|
|
k_nope=k_nope,
|
|
k_rope=k_pe,
|
|
value=value,
|
|
mask=attn_metadata.attn_mask,
|
|
seqlen=attn_metadata.prefill.query_lens,
|
|
head_num=self.num_heads,
|
|
kv_head_num=self.num_heads,
|
|
pre_out=None,
|
|
prev_lse=None,
|
|
qk_scale=self.scale,
|
|
kernel_type="kernel_type_high_precision",
|
|
mask_type="mask_type_triu",
|
|
input_layout="type_bsnd",
|
|
calc_type="calc_type_first_ring",
|
|
output=attn_output,
|
|
softmax_lse=attn_lse,
|
|
)
|
|
attn_output, attn_lse = self._compute_prefill_context(
|
|
q_nope, q_pe, kv_c_and_k_pe_cache, self.qk_rope_head_dim, attn_metadata, attn_output, attn_lse
|
|
)
|
|
|
|
attn_output = attn_output.reshape([num_tokens, self.num_heads * self.v_head_dim])
|
|
return attn_output
|
|
|
|
def exec_kv_decode(
|
|
self,
|
|
kv_no_split: torch.Tensor,
|
|
cos: torch.Tensor,
|
|
sin: torch.Tensor,
|
|
kv_cache: tuple,
|
|
slots: torch.Tensor,
|
|
):
|
|
B = kv_no_split.shape[0]
|
|
N = self.num_kv_heads
|
|
S = 1
|
|
# npu_kv_rmsnorm_rope_cache needs [B, N, S, D]
|
|
kv_no_split = kv_no_split.view(B, N, S, self.kv_lora_rank + self.qk_rope_head_dim)
|
|
cache_mode = "PA_NZ" if self.enable_kv_nz else "PA"
|
|
k_pe, k_nope, _, _ = torch_npu.npu_kv_rmsnorm_rope_cache(
|
|
kv_no_split,
|
|
self.kv_a_layernorm.weight, # type: ignore[union-attr]
|
|
cos,
|
|
sin,
|
|
slots.to(torch.int64),
|
|
kv_cache[1],
|
|
kv_cache[0],
|
|
epsilon=self.kv_a_layernorm.variance_epsilon, # type: ignore[union-attr]
|
|
cache_mode=cache_mode,
|
|
)
|
|
return k_pe, k_nope
|
|
|
|
def exec_kv_prefill(
|
|
self,
|
|
kv_no_split: torch.Tensor,
|
|
cos: torch.Tensor,
|
|
sin: torch.Tensor,
|
|
kv_cache: tuple,
|
|
slots: torch.Tensor,
|
|
):
|
|
B = kv_no_split.shape[0]
|
|
N = self.num_kv_heads
|
|
S = 1
|
|
# npu_kv_rmsnorm_rope_cache needs [B, N, S, D]
|
|
kv_no_split = kv_no_split.view(B, N, S, self.kv_lora_rank + self.qk_rope_head_dim)
|
|
cache_mode = "PA"
|
|
_, _, k_pe, k_nope = torch_npu.npu_kv_rmsnorm_rope_cache(
|
|
kv_no_split,
|
|
self.kv_a_layernorm.weight, # type: ignore[union-attr]
|
|
cos,
|
|
sin,
|
|
slots.to(torch.int64),
|
|
kv_cache[1],
|
|
kv_cache[0],
|
|
epsilon=self.kv_a_layernorm.variance_epsilon, # type: ignore[union-attr]
|
|
cache_mode=cache_mode,
|
|
is_output_kv=True,
|
|
)
|
|
return k_pe, k_nope
|
|
|
|
def rope_single(
|
|
self,
|
|
x: torch.Tensor,
|
|
cos: torch.Tensor,
|
|
sin: torch.Tensor,
|
|
) -> torch.Tensor:
|
|
B, N, D = x.shape
|
|
S = 1
|
|
x = x.view(B, N, S, D)
|
|
x = torch_npu.npu_interleave_rope(x, cos, sin)
|
|
return x.view(B, N, D)
|
|
|
|
def _forward_decode(
|
|
self,
|
|
q_nope: torch.Tensor,
|
|
q_pe: torch.Tensor,
|
|
k_nope: torch.Tensor,
|
|
k_pe: torch.Tensor,
|
|
block_size: int,
|
|
attn_metadata: AscendMLAMetadata,
|
|
) -> torch.Tensor:
|
|
decode_meta = attn_metadata.decode
|
|
assert decode_meta is not None
|
|
num_tokens = q_nope.size(0)
|
|
# shape of knope/k_pe for npu graph mode should be:
|
|
# [num_blocks, num_kv_heads, block_size, self.kv_lora_rank/self.qk_rope_head_dim]
|
|
actual_seq_lengths = None
|
|
if self.enable_kv_nz:
|
|
nz_fmt_last_dim = 16
|
|
k_nope = k_nope.view(
|
|
-1, self.num_kv_heads, self.kv_lora_rank // nz_fmt_last_dim, block_size, nz_fmt_last_dim
|
|
)
|
|
k_pe = k_pe.view(
|
|
-1, self.num_kv_heads, self.qk_rope_head_dim // nz_fmt_last_dim, block_size, nz_fmt_last_dim
|
|
)
|
|
else:
|
|
k_nope = k_nope.view(-1, self.num_kv_heads, block_size, self.kv_lora_rank)
|
|
k_pe = k_pe.view(-1, self.num_kv_heads, block_size, self.qk_rope_head_dim)
|
|
|
|
attn_output_shape: tuple | None = None
|
|
if (
|
|
attn_metadata.attn_state
|
|
in [
|
|
AscendAttentionState.SpecDecoding,
|
|
AscendAttentionState.ChunkedPrefill,
|
|
AscendAttentionState.DecodeOnly,
|
|
]
|
|
and self.speculative_config is not None
|
|
):
|
|
# The right part layout indicates the layout of the attention
|
|
# output. It is set to NTD to avoid the need for a transpose
|
|
# operation after attention.
|
|
input_layout = "TND_NTD"
|
|
# TODO: If the driver is upgraded later, the contiguous function can be deleted.
|
|
# Input shape: [num_tokens, num_heads, dim]
|
|
q_nope = q_nope.view(num_tokens, self.num_heads, -1).contiguous()
|
|
q_pe = q_pe.view(num_tokens, self.num_heads, -1)
|
|
# Output shape: [num_heads, num_tokens, dim]
|
|
attn_output_shape = (self.num_heads, num_tokens, self.kv_lora_rank)
|
|
sparse_mode = 3
|
|
attn_mask = attn_metadata.decode.attn_mask # type:ignore
|
|
actual_seq_lengths = decode_meta.actual_seq_lengths_q
|
|
else:
|
|
# The output layout is set to NBSD to eliminate the need for a
|
|
# transpose operation after attention.
|
|
if self.enable_kv_nz:
|
|
# Input shape: [num_tokens, seq_len, num_heads, dim]
|
|
input_layout = "BSND_NBSD"
|
|
q_nope = q_nope.view(num_tokens, 1, self.num_heads, -1).contiguous()
|
|
q_pe = q_pe.view(num_tokens, 1, self.num_heads, -1)
|
|
else:
|
|
# Input shape: [num_tokens, num_heads, seq_len, dim]
|
|
input_layout = "BNSD_NBSD"
|
|
q_nope = q_nope.view(num_tokens, self.num_heads, 1, -1).contiguous()
|
|
q_pe = q_pe.view(num_tokens, self.num_heads, 1, -1)
|
|
# Output shape: [num_heads, num_tokens, seq_len, dim]
|
|
attn_output_shape = (self.num_heads, num_tokens, 1, self.kv_lora_rank)
|
|
sparse_mode = 0
|
|
attn_mask = None
|
|
|
|
common_kwargs = {
|
|
"query_rope": q_pe,
|
|
"key_rope": k_pe,
|
|
"num_heads": self.num_heads,
|
|
"num_key_value_heads": self.num_kv_heads,
|
|
"input_layout": input_layout,
|
|
"atten_mask": attn_mask,
|
|
"sparse_mode": sparse_mode,
|
|
"scale": self.scale,
|
|
"antiquant_mode": 0,
|
|
"antiquant_scale": None,
|
|
"block_table": decode_meta.block_table,
|
|
"block_size": block_size,
|
|
"actual_seq_lengths": actual_seq_lengths,
|
|
"actual_seq_lengths_kv": decode_meta.seq_lens_list,
|
|
}
|
|
forward_context: ForwardContext = get_forward_context()
|
|
if forward_context.is_draft_model:
|
|
graph_params = get_draft_graph_params()
|
|
else:
|
|
graph_params = get_graph_params()
|
|
if forward_context.capturing:
|
|
stream = torch_npu.npu.current_stream()
|
|
|
|
event = torch.npu.ExternalEvent()
|
|
event.wait(stream)
|
|
event.reset(stream)
|
|
graph_params.events[num_tokens].append(event)
|
|
|
|
workspace = graph_params.workspaces.get(num_tokens)
|
|
if workspace is None:
|
|
workspace = torch_npu._npu_fused_infer_attention_score_get_max_workspace(
|
|
q_nope, k_nope, k_nope, **common_kwargs
|
|
)
|
|
if forward_context.is_draft_model:
|
|
update_draft_graph_params_workspaces(num_tokens, workspace)
|
|
else:
|
|
update_graph_params_workspaces(num_tokens, workspace)
|
|
|
|
attn_output = torch.empty(attn_output_shape, dtype=q_nope.dtype, device=q_nope.device)
|
|
softmax_lse = torch.empty(num_tokens, dtype=q_nope.dtype, device=q_nope.device)
|
|
|
|
graph_params.attn_params[num_tokens].append(
|
|
(
|
|
weak_ref_tensors(q_nope),
|
|
weak_ref_tensors(k_nope),
|
|
weak_ref_tensors(q_pe),
|
|
weak_ref_tensors(k_pe),
|
|
self.num_heads,
|
|
self.num_kv_heads,
|
|
input_layout,
|
|
weak_ref_tensors(attn_mask) if attn_mask is not None else None,
|
|
sparse_mode,
|
|
self.scale,
|
|
decode_meta.block_table,
|
|
block_size,
|
|
decode_meta.seq_lens_list,
|
|
actual_seq_lengths,
|
|
weak_ref_tensors(attn_output),
|
|
weak_ref_tensors(softmax_lse),
|
|
)
|
|
)
|
|
|
|
torch.npu.graph_task_group_begin(stream)
|
|
torch_npu.npu_fused_infer_attention_score.out(
|
|
q_nope, k_nope, k_nope, **common_kwargs, workspace=workspace, out=[attn_output, softmax_lse]
|
|
)
|
|
handle = torch.npu.graph_task_group_end(stream)
|
|
graph_params.handles[num_tokens].append(handle)
|
|
else:
|
|
attn_output, _ = torch_npu.npu_fused_infer_attention_score(q_nope, k_nope, k_nope, **common_kwargs)
|
|
|
|
return self._v_up_proj(attn_output)
|
|
|
|
def reorg_decode_q(self, decode_q_nope, decode_q_pe):
|
|
return decode_q_nope, decode_q_pe
|
|
|
|
def _mla_preprocess_only_decode(self, hidden_states, kv_cache, attn_metadata):
|
|
bsz = attn_metadata.num_decode_tokens
|
|
hidden_states = hidden_states[:bsz]
|
|
|
|
cos_shape = attn_metadata.decode.cos.shape
|
|
cos = attn_metadata.decode.cos.view(cos_shape[0], cos_shape[-1])
|
|
sin = attn_metadata.decode.sin.view(cos_shape[0], cos_shape[-1])
|
|
|
|
decode_k_nope, decode_k_pe = kv_cache[0], kv_cache[1]
|
|
decode_q_nope = torch.empty(
|
|
(hidden_states.shape[0], self.W_UK_T.shape[0], decode_k_nope.shape[-1]),
|
|
dtype=hidden_states.dtype,
|
|
device=hidden_states.device,
|
|
)
|
|
decode_q_pe = torch.empty(
|
|
(hidden_states.shape[0], self.W_UK_T.shape[0], decode_k_pe.shape[-1]),
|
|
dtype=hidden_states.dtype,
|
|
device=hidden_states.device,
|
|
)
|
|
|
|
torch.ops._C_ascend.mla_preprocess(
|
|
hidden_states,
|
|
self.wd_qkv,
|
|
self.deq_scale_qkv,
|
|
self.gamma1,
|
|
self.beta1,
|
|
self.wu_q,
|
|
self.qb_deq_scl,
|
|
self.gamma2,
|
|
cos,
|
|
sin,
|
|
self.W_UK_T,
|
|
decode_k_nope,
|
|
decode_k_pe,
|
|
attn_metadata.slot_mapping[:bsz],
|
|
quant_scale0=self.quant_scale0,
|
|
quant_offset0=self.quant_offset0,
|
|
bias0=self.quant_bias_qkv,
|
|
quant_scale1=self.quant_scale1,
|
|
quant_offset1=self.quant_offset1,
|
|
bias1=self.qb_qt_bias,
|
|
ctkv_scale=self.ctkv_scale,
|
|
q_nope_scale=self.q_nope_scale,
|
|
cache_mode="nzcache" if self.enable_kv_nz else "krope_ctkv",
|
|
quant_mode="per_tensor_quant_asymm",
|
|
q_out0=decode_q_nope,
|
|
kv_cache_out0=decode_k_nope,
|
|
q_out1=decode_q_pe,
|
|
kv_cache_out1=decode_k_pe,
|
|
enable_inner_out=False,
|
|
inner_out=torch.tensor([], device=hidden_states.device),
|
|
)
|
|
decode_q_nope = decode_q_nope.view(bsz, self.num_heads, self.kv_lora_rank)
|
|
decode_q_pe = decode_q_pe.view(bsz, self.num_heads, -1)
|
|
|
|
decode_q_nope, decode_q_pe = self.reorg_decode_q(decode_q_nope, decode_q_pe)
|
|
|
|
decode_preprocess_res = DecodeMLAPreprocessResult(decode_q_nope, decode_q_pe, decode_k_nope, decode_k_pe)
|
|
return decode_preprocess_res, None
|
|
|
|
def mla_preprocess_prefill(self, q_c, kv_no_split, kv_cache, attn_metadata):
|
|
num_decode_tokens = attn_metadata.num_decode_tokens
|
|
num_actual_tokens = attn_metadata.num_actual_tokens
|
|
prefill_kv_no_split = kv_no_split[num_decode_tokens:num_actual_tokens]
|
|
prefill_q_c = q_c[num_decode_tokens:num_actual_tokens]
|
|
prefill_q = self.q_proj(prefill_q_c)[0].view(-1, self.num_heads, self.qk_head_dim)
|
|
prefill_q_pe = prefill_q[..., self.qk_nope_head_dim :]
|
|
prefill_q_nope = prefill_q[..., : self.qk_nope_head_dim]
|
|
cos = attn_metadata.prefill.cos
|
|
sin = attn_metadata.prefill.sin
|
|
prefill_slots = attn_metadata.slot_mapping[num_decode_tokens:num_actual_tokens]
|
|
prefill_q_pe = self.rope_single(prefill_q_pe, cos, sin)
|
|
if self.is_kv_producer:
|
|
attn_metadata.reshape_cache_event = torch.npu.Event()
|
|
prefill_k_pe, prefill_k_c_normed = self.exec_kv_prefill(prefill_kv_no_split, cos, sin, kv_cache, prefill_slots)
|
|
if self.is_kv_producer:
|
|
attn_metadata.reshape_cache_event.record()
|
|
prefill_k_nope, prefill_value = (
|
|
self.kv_b_proj(prefill_k_c_normed)[0]
|
|
.view(-1, self.num_heads, self.qk_nope_head_dim + self.v_head_dim)
|
|
.split([self.qk_nope_head_dim, self.v_head_dim], dim=-1)
|
|
)
|
|
prefill_k_pe = prefill_k_pe.view(prefill_q_c.shape[0], self.num_kv_heads, -1)
|
|
prefill_k_pe = prefill_k_pe.expand((*prefill_k_nope.shape[:-1], -1))
|
|
return PrefillMLAPreprocessResult(prefill_q_nope, prefill_q_pe, prefill_k_nope, prefill_k_pe, prefill_value)
|
|
|
|
def mla_preprocess_decode(self, q_c, kv_no_split, kv_cache, attn_metadata):
|
|
num_decode_tokens = attn_metadata.num_decode_tokens
|
|
decode_q_c = q_c[:num_decode_tokens]
|
|
cos = attn_metadata.decode.cos
|
|
sin = attn_metadata.decode.sin
|
|
decode_ql_nope, decode_q_pe = self._q_proj_and_k_up_proj(decode_q_c)
|
|
decode_q_pe = self.rope_single(decode_q_pe, cos, sin)
|
|
decode_slots = attn_metadata.slot_mapping[:num_decode_tokens:1]
|
|
decode_kv_no_split = kv_no_split[:num_decode_tokens]
|
|
decode_k_pe, decode_k_nope = self.exec_kv_decode(decode_kv_no_split, cos, sin, kv_cache, decode_slots)
|
|
return DecodeMLAPreprocessResult(decode_ql_nope, decode_q_pe, decode_k_nope, decode_k_pe)
|
|
|
|
def _mla_preprocess(self, layer_name, hidden_states, kv_cache, attn_metadata, need_gather_q_kv):
|
|
# MLA Preprocess:
|
|
# 1. Perform fused_qkv_a_proj and q_a_layernorm to obtain q_c and kv_no_split
|
|
# or
|
|
# Perform kv_a_proj_with_mqa to obtain kv_no_split
|
|
# 2. If need_gather_q_kv, perform all_gather.
|
|
# 3. Preprocess decode tokens, write kv cache and get:
|
|
# decode_ql_nope, decode_q_pe, decode_k_pe, decode_k_nope
|
|
# 4. Preprocess prefill tokens, write kv cache and get:
|
|
# prefill_q_nope, prefill_q_pe, prefill_k_nope, prefill_k_pe, prefill_value
|
|
has_decode = attn_metadata.num_decodes > 0
|
|
has_prefill = attn_metadata.num_prefills > 0
|
|
if self.fused_qkv_a_proj is not None:
|
|
maybe_npu_prefetch(
|
|
inputs=self.fused_qkv_a_proj.weight, dependency=hidden_states, enabled=self.enable_prefetch
|
|
)
|
|
qkv_lora = self.fused_qkv_a_proj(hidden_states)[0]
|
|
q_c, kv_no_split = qkv_lora.split(
|
|
[self.q_lora_rank, self.kv_lora_rank + self.qk_rope_head_dim],
|
|
dim=-1,
|
|
)
|
|
q_c = self.q_a_layernorm(q_c) # type: ignore[misc]
|
|
# allgather need contiguous data
|
|
kv_no_split = kv_no_split.contiguous()
|
|
else:
|
|
q_c = hidden_states
|
|
kv_no_split = self.kv_a_proj_with_mqa(hidden_states)[0] # type: ignore[misc]
|
|
|
|
# Process for Flash Comm V1
|
|
q_c = torch.ops.vllm.maybe_all_gather_and_maybe_unpad(q_c.contiguous(), need_gather_q_kv)
|
|
kv_no_split = torch.ops.vllm.maybe_all_gather_and_maybe_unpad(kv_no_split.contiguous(), need_gather_q_kv)
|
|
|
|
for layer in self.layer_sharding_kwargs or []:
|
|
if is_hidden_layer(layer):
|
|
reach_layer_for_shard_weight_series(layer)
|
|
|
|
decode_preprocess_res = None
|
|
prefill_preprocess_res = None
|
|
if has_prefill:
|
|
wait_for_kv_layer_from_connector(layer_name)
|
|
# Preprocess for decode tokens
|
|
if has_decode:
|
|
decode_preprocess_res = self.mla_preprocess_decode(q_c, kv_no_split, kv_cache, attn_metadata)
|
|
# Preprocess for prefill tokens
|
|
if has_prefill:
|
|
prefill_preprocess_res = self.mla_preprocess_prefill(q_c, kv_no_split, kv_cache, attn_metadata)
|
|
return decode_preprocess_res, prefill_preprocess_res
|
|
|
|
def get_num_actual_tokens(self, attn_metadata: M):
|
|
return attn_metadata.num_actual_tokens
|
|
|
|
def forward(
|
|
self,
|
|
layer_name,
|
|
hidden_states: torch.Tensor, # query in unified attn
|
|
kv_cache: tuple[torch.Tensor],
|
|
attn_metadata: M,
|
|
need_gather_q_kv: bool = False,
|
|
output: torch.Tensor | None = None,
|
|
) -> torch.Tensor:
|
|
assert output is not None, "Output tensor must be provided."
|
|
if attn_metadata is None:
|
|
# Profiling run.
|
|
for layer in self.layer_sharding_kwargs or []:
|
|
if is_hidden_layer(layer):
|
|
reach_layer_for_shard_weight_series(layer)
|
|
return output.fill_(0)
|
|
|
|
forward_context = get_forward_context()
|
|
num_actual_tokens = self.get_num_actual_tokens(attn_metadata)
|
|
assert (
|
|
attn_metadata.num_decodes is not None
|
|
and attn_metadata.num_prefills is not None
|
|
and attn_metadata.num_decode_tokens is not None
|
|
)
|
|
|
|
has_prefill = attn_metadata.num_prefills > 0
|
|
num_decode_tokens = attn_metadata.num_decode_tokens
|
|
# Inputs and outputs may be padded for CUDA graphs
|
|
output_padded = output
|
|
o_proj_input_shape = (forward_context.num_tokens, self.num_heads * self.v_head_dim)
|
|
o_proj_input = torch.empty(o_proj_input_shape, dtype=hidden_states.dtype, device=hidden_states.device)
|
|
|
|
# MLA Preprocess
|
|
if self.enable_mlapo and attn_metadata.num_decode_tokens <= MLAPO_MAX_SUPPORTED_TOKENS:
|
|
hidden_states = torch.ops.vllm.maybe_all_gather_and_maybe_unpad(
|
|
hidden_states.contiguous(), need_gather_q_kv
|
|
)
|
|
decode_preprocess_res, prefill_preprocess_res = self._mla_preprocess_only_decode(
|
|
hidden_states, kv_cache, attn_metadata
|
|
)
|
|
else:
|
|
decode_preprocess_res, prefill_preprocess_res = self._mla_preprocess(
|
|
layer_name, hidden_states, kv_cache, attn_metadata, need_gather_q_kv
|
|
)
|
|
if decode_preprocess_res is not None:
|
|
# MLA Preprocess for decoding
|
|
output_decode = self._forward_decode(
|
|
decode_preprocess_res.ql_nope,
|
|
decode_preprocess_res.q_pe,
|
|
decode_preprocess_res.k_nope,
|
|
decode_preprocess_res.k_pe,
|
|
kv_cache[0].shape[1],
|
|
attn_metadata,
|
|
)
|
|
|
|
o_proj_input[:num_decode_tokens] = output_decode
|
|
|
|
if prefill_preprocess_res is not None:
|
|
# FIX: aicore move should be also placed on the comm stream in dbo,
|
|
# otherwise it may affect the accuracy
|
|
# TODO: use an elegant way to overlap
|
|
output_prefill = self._forward_prefill(
|
|
prefill_preprocess_res.q_nope,
|
|
prefill_preprocess_res.q_pe,
|
|
prefill_preprocess_res.k_nope,
|
|
prefill_preprocess_res.k_pe,
|
|
prefill_preprocess_res.value,
|
|
kv_cache,
|
|
attn_metadata,
|
|
)
|
|
|
|
o_proj_input[num_decode_tokens:num_actual_tokens] = output_prefill
|
|
# O proj
|
|
MAX_O_PROJ_PREFETCH_SIZE = 16 * 1024 * 1024
|
|
maybe_npu_prefetch(
|
|
inputs=self.o_proj.weight,
|
|
dependency=o_proj_input,
|
|
max_size=MAX_O_PROJ_PREFETCH_SIZE,
|
|
enabled=self.enable_prefetch,
|
|
)
|
|
|
|
output[...] = self.o_proj(o_proj_input, is_prefill=prefill_preprocess_res is not None)[0]
|
|
|
|
del o_proj_input
|
|
|
|
if has_prefill:
|
|
maybe_save_kv_layer_to_connector(layer_name, list(kv_cache))
|
|
return output_padded
|