204
vllm_ascend/compilation/passes/sequence_parallelism_moe.py
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204
vllm_ascend/compilation/passes/sequence_parallelism_moe.py
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@@ -0,0 +1,204 @@
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import torch
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import torch._inductor.pattern_matcher as pm
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from torch._inductor.pattern_matcher import PatternMatcherPass
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from vllm.compilation.passes.vllm_inductor_pass import PatternPrettyPrinter, VllmInductorPass
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from vllm.config import VllmConfig
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from vllm.config.utils import Range
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from vllm.logger import logger
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from vllm_ascend.compilation.passes.sequence_parallelism import (
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_SequenceParallelPatternHelper,
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get_sp_min_token_num,
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)
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class MiddleLayerAllgatherAddRMSNormPattern(_SequenceParallelPatternHelper):
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"""Replaces all_gather + slice + AddRMSNormBias with AddRMSNormBias +
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all_gather to avoid middle-layer shape mismatch."""
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def __init__(self, vllm_config: VllmConfig, eps: float = 1e-6):
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super().__init__(eps, vllm_config.model_config.dtype, torch.npu.current_device())
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def get_inputs(self):
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input = self.empty(5, 16)
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weight = self.empty(16)
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residual = self.empty(8, 16)
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# num_tokens = 8
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return [input, weight, residual]
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def get_scalar_inputs(self):
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return {"num_tokens": 8}
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def register(self, pm_pass: PatternMatcherPass):
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def pattern(
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input: torch.Tensor, weight: torch.Tensor, residual: torch.Tensor, num_tokens
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) -> tuple[torch.Tensor, torch.Tensor]:
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all_gather = self._all_gather(input)
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x_sliced = all_gather[:num_tokens]
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result, _, residual = torch.ops._C_ascend.npu_add_rms_norm_bias(x_sliced, residual, weight, None, self.eps)
|
||||
|
||||
return result, residual
|
||||
|
||||
def replacement(
|
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input: torch.Tensor, weight: torch.Tensor, residual: torch.Tensor, num_tokens
|
||||
) -> tuple[torch.Tensor, torch.Tensor]:
|
||||
residual = torch.ops.vllm.maybe_chunk_residual(input, residual)
|
||||
result, _, residual = torch.ops._C_ascend.npu_add_rms_norm_bias(input, residual, weight, None, self.eps)
|
||||
all_gather = self._all_gather(result)
|
||||
return all_gather, residual
|
||||
|
||||
pm.register_replacement(
|
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pattern, replacement, self.get_inputs(), pm.fwd_only, pm_pass, scalar_workaround=self.get_scalar_inputs()
|
||||
)
|
||||
|
||||
|
||||
class LastLayerAllgatherRMSNormPattern(_SequenceParallelPatternHelper):
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||||
"""Same as MiddleLayerAllgatherAddRMSNormPattern but for the last layer (no residual)
|
||||
all_gather + RMSNorm fusion."""
|
||||
|
||||
def __init__(self, vllm_config: VllmConfig, eps: float = 1e-6):
|
||||
super().__init__(eps, vllm_config.model_config.dtype, torch.npu.current_device())
|
||||
|
||||
def get_inputs(self):
|
||||
input = self.empty(5, 16)
|
||||
weight = self.empty(16)
|
||||
residual = self.empty(8, 16)
|
||||
return [input, weight, residual]
|
||||
|
||||
def get_scalar_inputs(self):
|
||||
return {"num_tokens": 8}
|
||||
|
||||
def register(self, pm_pass: PatternMatcherPass):
|
||||
def pattern(
|
||||
input: torch.Tensor, weight: torch.Tensor, residual: torch.Tensor, num_tokens
|
||||
) -> tuple[torch.Tensor, torch.Tensor]:
|
||||
all_gather = self._all_gather(input)
|
||||
x_sliced = all_gather[:num_tokens]
|
||||
result, _, _ = torch.ops._C_ascend.npu_add_rms_norm_bias(x_sliced, residual, weight, None, self.eps)
|
||||
|
||||
return result
|
||||
|
||||
def replacement(
|
||||
input: torch.Tensor, weight: torch.Tensor, residual: torch.Tensor, num_tokens
|
||||
) -> tuple[torch.Tensor, torch.Tensor]:
|
||||
residual = torch.ops.vllm.maybe_chunk_residual(input, residual)
|
||||
result, _, _ = torch.ops._C_ascend.npu_add_rms_norm_bias(input, residual, weight, None, self.eps)
|
||||
all_gather = self._all_gather(result)
|
||||
return all_gather
|
||||
|
||||
pm.register_replacement(
|
||||
pattern, replacement, self.get_inputs(), pm.fwd_only, pm_pass, scalar_workaround=self.get_scalar_inputs()
|
||||
)
|
||||
|
||||
|
||||
class Qwen3VLMiddleLayerAllgatherAddRMSNormPattern(_SequenceParallelPatternHelper):
|
||||
"""Replaces all_gather + slice + add + AddRMSNormBias with add(chunk) +
|
||||
AddRMSNormBias + all_gather for Qwen3-VL-style all_gather path."""
|
||||
|
||||
def __init__(self, vllm_config: VllmConfig, eps: float = 1e-6):
|
||||
super().__init__(eps, vllm_config.model_config.dtype, torch.npu.current_device())
|
||||
|
||||
def get_inputs(self):
|
||||
input = self.empty(5, 16)
|
||||
weight = self.empty(16)
|
||||
residual = self.empty(8, 16)
|
||||
deepstack_input_embeds = self.empty(8, 16)
|
||||
return [input, weight, residual, deepstack_input_embeds]
|
||||
|
||||
def get_scalar_inputs(self):
|
||||
return {"num_tokens": 8}
|
||||
|
||||
def register(self, pm_pass: PatternMatcherPass):
|
||||
def pattern(
|
||||
input: torch.Tensor,
|
||||
weight: torch.Tensor,
|
||||
residual: torch.Tensor,
|
||||
deepstack_input_embeds: torch.Tensor,
|
||||
num_tokens,
|
||||
) -> tuple[torch.Tensor, torch.Tensor]:
|
||||
all_gather = self._all_gather(input)
|
||||
x_sliced = all_gather[:num_tokens]
|
||||
add_ = x_sliced + deepstack_input_embeds
|
||||
result, _, residual = torch.ops._C_ascend.npu_add_rms_norm_bias(add_, residual, weight, None, self.eps)
|
||||
|
||||
return result, residual
|
||||
|
||||
def replacement(
|
||||
input: torch.Tensor,
|
||||
weight: torch.Tensor,
|
||||
residual: torch.Tensor,
|
||||
deepstack_input_embeds: torch.Tensor,
|
||||
num_tokens,
|
||||
) -> tuple[torch.Tensor, torch.Tensor]:
|
||||
chunk = deepstack_input_embeds.chunk(self.tp_size)[self.tp_rank]
|
||||
add_ = input + chunk
|
||||
residual = torch.ops.vllm.maybe_chunk_residual(input, residual)
|
||||
result, _, residual = torch.ops._C_ascend.npu_add_rms_norm_bias(add_, residual, weight, None, self.eps)
|
||||
all_gather = self._all_gather(result)
|
||||
return all_gather, residual
|
||||
|
||||
pm.register_replacement(
|
||||
pattern, replacement, self.get_inputs(), pm.fwd_only, pm_pass, scalar_workaround=self.get_scalar_inputs()
|
||||
)
|
||||
|
||||
|
||||
class AllGatherChunkNoOpPattern(_SequenceParallelPatternHelper):
|
||||
"""Folds all_gather + sequence_parallel_chunk_impl into identity (no-op)."""
|
||||
|
||||
def __init__(self, vllm_config: VllmConfig, eps: float = 1e-6):
|
||||
super().__init__(eps, vllm_config.model_config.dtype, torch.npu.current_device())
|
||||
|
||||
def get_inputs(self):
|
||||
return [self.empty(8, 16)]
|
||||
|
||||
def register(self, pm_pass: PatternMatcherPass):
|
||||
def pattern(input: torch.Tensor) -> torch.Tensor:
|
||||
gathered = self._all_gather(input)
|
||||
return torch.ops.vllm.sequence_parallel_chunk_impl(gathered)
|
||||
|
||||
def replacement(input: torch.Tensor) -> torch.Tensor:
|
||||
return input
|
||||
|
||||
pm.register_replacement(pattern, replacement, self.get_inputs(), pm.fwd_only, pm_pass)
|
||||
|
||||
|
||||
class SequenceParallelismMoePass(VllmInductorPass):
|
||||
"""Sequence parallelism AllGather epilogue pass.
|
||||
|
||||
Applies AllGather-based patterns: MiddleLayerAllgatherAddRMSNormPattern,
|
||||
LastLayerAllgatherRMSNormPattern, Qwen3VLMiddleLayerAllgatherAddRMSNormPattern,
|
||||
and AllGatherChunkNoOpPattern (all_gather + sequence_parallel_chunk_impl -> identity).
|
||||
"""
|
||||
|
||||
def __init__(self, config: VllmConfig):
|
||||
super().__init__(config)
|
||||
|
||||
self.patterns: PatternMatcherPass = PatternMatcherPass(pass_name="npu_sequence_parallelism_allgather_ep_pass")
|
||||
|
||||
for epsilon in [1e-5, 1e-6]:
|
||||
MiddleLayerAllgatherAddRMSNormPattern(config, epsilon).register(self.patterns)
|
||||
LastLayerAllgatherRMSNormPattern(config, epsilon).register(self.patterns)
|
||||
Qwen3VLMiddleLayerAllgatherAddRMSNormPattern(config, epsilon).register(self.patterns)
|
||||
|
||||
AllGatherChunkNoOpPattern(config).register(self.patterns)
|
||||
|
||||
self.min_tokens = get_sp_min_token_num(config)
|
||||
|
||||
def __call__(self, graph: torch.fx.Graph):
|
||||
self.begin()
|
||||
logger.debug("before apply replacement %s", str(graph))
|
||||
self.matched_count = self.patterns.apply(graph)
|
||||
logger.debug("after apply replacement %s", str(graph))
|
||||
logger.debug("SequenceParallelismMoePass replaced %s patterns", self.matched_count)
|
||||
pattern_idx = 0
|
||||
for pattern_entry in self.patterns.patterns.values():
|
||||
for p in pattern_entry:
|
||||
p_str = PatternPrettyPrinter.run(p.pattern)
|
||||
logger.debug("Pattern %d: %s", pattern_idx, p_str)
|
||||
pattern_idx += 1
|
||||
self.end_and_log()
|
||||
|
||||
def is_applicable_for_range(self, compile_range: Range) -> bool:
|
||||
applicable = compile_range.start >= self.min_tokens
|
||||
logger.debug("SequenceParallelismMoePass compile_range=%r applicable=%r", compile_range, applicable)
|
||||
return applicable
|
||||
Reference in New Issue
Block a user