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[0.9.1][Perf]Remove NZ of kv_b_proj in Deepseek MLA. #1872

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Merged
ganyi1996ppo merged 1 commit into from
Jul 19, 2025
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[0.9.1][Perf]Remove NZ of kv_b_proj in Deepseek MLA. #1872

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9 changes: 1 addition & 8 deletions vllm_ascend/attention/mla_v1.py
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Original file line number Diff line number Diff line change
Expand Up @@ -22,8 +22,7 @@
from vllm_ascend.multistream.context import get_multistream_comm_context
from vllm_ascend.multistream.ms_split import model_input_split_v1_mla_attn
from vllm_ascend.ops.attention import vanilla_chunked_prefill_mla
from vllm_ascend.utils import (ACL_FORMAT_FRACTAL_NZ, npu_prefetch,
npu_stream_switch, npu_wait_tensor)
from vllm_ascend.utils import npu_prefetch, npu_stream_switch, npu_wait_tensor

if TYPE_CHECKING:
from vllm.v1.core.sched.output import SchedulerOutput
Expand Down Expand Up @@ -711,12 +710,6 @@ def get_and_maybe_dequant_weights(layer: LinearBase):
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()
if get_ascend_config().enable_weight_nz_layout:
# cast quantized weight tensors in NZ layout for higher inference speed
self.W_UV.data = torch_npu.npu_format_cast(self.W_UV.data,
ACL_FORMAT_FRACTAL_NZ)
self.W_UK_T.data = torch_npu.npu_format_cast(
self.W_UK_T.data, ACL_FORMAT_FRACTAL_NZ)

def _compute_prefill_context(
self,
Expand Down