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[TRTLLM-7361][feat] KV cache transfer for uneven pp #7117

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Merged
merged 8 commits into from
Sep 8, 2025
Merged

[TRTLLM-7361][feat] KV cache transfer for uneven pp #7117

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6784232
cache transceiver_support layer_num%pp_size!=0
chuangz0 Aug 21, 2025
7da62b4
add test for contextPP4_genTP4
chuangz0 Aug 21, 2025
634e640
add test for mtp
chuangz0 Aug 22, 2025
d13cd26
nixl support uneven layerNum
chuangz0 Aug 25, 2025
a6dd6a0
add some comments
chuangz0 Aug 25, 2025
a844214
address comments
chuangz0 Aug 28, 2025
4bb4312
resolve comments
chuangz0 Sep 4, 2025
6f21399
address some comment
chuangz0 Sep 5, 2025
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6 changes: 3 additions & 3 deletions cpp/include/tensorrt_llm/batch_manager/cacheTransceiver.h
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Original file line number Diff line number Diff line change
Expand Up @@ -72,20 +72,20 @@ class CacheTransceiver : public BaseCacheTransceiver
public:
CacheTransceiver(kv_cache_manager::BaseKVCacheManager* cacheManager,
executor::kv_cache::CacheState::ModelConfig const& cacheStateModelCfg, runtime::WorldConfig const& worldConfig,
nvinfer1::DataType dataType,
std::vector<SizeType32> const& attentionLayerNumPerPP, nvinfer1::DataType dataType,
executor::kv_cache::CacheState::AttentionType attentionType
= executor::kv_cache::CacheState::AttentionType::kDEFAULT,
std::optional<executor::CacheTransceiverConfig> cacheTransceiverConfig = std::nullopt);

CacheTransceiver(kv_cache_manager::BaseKVCacheManager* cacheManager, std::vector<SizeType32> numKvHeadsPerLayer,
SizeType32 sizePerHead, SizeType32 tokensPerBlock, runtime::WorldConfig const& worldConfig,
nvinfer1::DataType dataType,
std::vector<SizeType32> const& attentionLayerNumPerPP, nvinfer1::DataType dataType,
executor::kv_cache::CacheState::AttentionType attentionType
= executor::kv_cache::CacheState::AttentionType::kDEFAULT,
std::optional<executor::CacheTransceiverConfig> cacheTransceiverConfig = std::nullopt)
: CacheTransceiver(cacheManager,
executor::kv_cache::CacheState::ModelConfig{numKvHeadsPerLayer, sizePerHead, tokensPerBlock}, worldConfig,
dataType, attentionType, cacheTransceiverConfig)
attentionLayerNumPerPP, dataType, attentionType, cacheTransceiverConfig)
{
}

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25 changes: 16 additions & 9 deletions cpp/include/tensorrt_llm/executor/dataTransceiverState.h
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Original file line number Diff line number Diff line change
Expand Up @@ -48,34 +48,39 @@ class CacheState final
kMLA = 1,
};

CacheState(ModelConfig modelConfig, runtime::WorldConfig const& worldConfig, nvinfer1::DataType dataType,
CacheState(ModelConfig modelConfig, runtime::WorldConfig const& worldConfig,
std::vector<SizeType32> const& attentionLayerNumPerPP, nvinfer1::DataType dataType,
AttentionType attentionType = AttentionType::kDEFAULT, int kvFactor = 2)
: mModelConfig(std::move(modelConfig))
, mParallelConfig{worldConfig.getTensorParallelism(), worldConfig.getPipelineParallelism(),
worldConfig.getContextParallelism(), worldConfig.enableAttentionDP(), worldConfig.getTensorParallelRank(),
worldConfig.getTensorParallelism()}
worldConfig.getTensorParallelism(), attentionLayerNumPerPP}
, mDataType{dataType}
, mAttentionConfig(attentionType, kvFactor)
{
}

CacheState(std::vector<SizeType32> nbKvHeadPerLayer, SizeType32 sizePerHead, SizeType32 tokensPerBlock,
SizeType32 tensorParallelism, SizeType32 pipelineParallelism, SizeType32 contextParallelism,
nvinfer1::DataType dataType, AttentionType attentionType = AttentionType::kDEFAULT, int kvFactor = 2,
bool enableAttentionDP = false, int DPrank = 0, int DPsize = 0)
std::vector<SizeType32> const& attentionLayerNumPerPP, nvinfer1::DataType dataType,
AttentionType attentionType = AttentionType::kDEFAULT, int kvFactor = 2, bool enableAttentionDP = false,
int DPrank = 0, int DPsize = 0)
: mModelConfig{std::move(nbKvHeadPerLayer), sizePerHead, tokensPerBlock}
, mParallelConfig{tensorParallelism, pipelineParallelism, contextParallelism, enableAttentionDP, DPrank, DPsize}
, mParallelConfig{tensorParallelism, pipelineParallelism, contextParallelism, enableAttentionDP, DPrank, DPsize,
attentionLayerNumPerPP}
, mDataType{dataType}
, mAttentionConfig(attentionType, kvFactor)
{
}

CacheState(SizeType32 nbAttentionLayers, SizeType32 nbKvHeads, SizeType32 sizePerHead, SizeType32 tokensPerBlock,
SizeType32 tensorParallelism, SizeType32 pipelineParallelism, SizeType32 contextParallelism,
nvinfer1::DataType dataType, AttentionType attentionType = AttentionType::kDEFAULT, int kvFactor = 2,
bool enableAttentionDP = false, int DPrank = 0, int DPsize = 0)
std::vector<SizeType32> const& attentionLayerNumPerPP, nvinfer1::DataType dataType,
AttentionType attentionType = AttentionType::kDEFAULT, int kvFactor = 2, bool enableAttentionDP = false,
int DPrank = 0, int DPsize = 0)
: mModelConfig{std::vector(nbAttentionLayers, nbKvHeads), sizePerHead, tokensPerBlock}
, mParallelConfig{tensorParallelism, pipelineParallelism, contextParallelism, enableAttentionDP, DPrank, DPsize}
, mParallelConfig{tensorParallelism, pipelineParallelism, contextParallelism, enableAttentionDP, DPrank, DPsize,
attentionLayerNumPerPP}
, mDataType{dataType}
, mAttentionConfig(attentionType, kvFactor)
{
Expand Down Expand Up @@ -108,12 +113,14 @@ class CacheState final
bool mEnableAttentionDP;
SizeType32 mDPrank;
SizeType32 mDPsize;
std::vector<SizeType32> mAttentionLayerNumPerPP;

[[nodiscard]] bool operator==(ParallelConfig const& other) const noexcept
{
return mTensorParallelism == other.mTensorParallelism && mPipelineParallelism == other.mPipelineParallelism
&& mContextParallelism == other.mContextParallelism && mEnableAttentionDP == other.mEnableAttentionDP
&& mDPrank == other.mDPrank && mDPsize == other.mDPsize;
&& mDPrank == other.mDPrank && mDPsize == other.mDPsize
&& mAttentionLayerNumPerPP == other.mAttentionLayerNumPerPP;
}
};

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