Nvfp4 Moe Plugin

class Nvfp4MoePlugin : public nvinfer1::IPluginV3, public nvinfer1::IPluginV3OneCore, public nvinfer1::IPluginV3OneBuild, public nvinfer1::IPluginV3OneRuntime

TensorRT plugin: NVFP4 MoE — FP16 activations with on-the-fly NVFP4 quant. SM100/SM101/SM110 use the split FC1/FC2 CuTeDSL path.

Weight layout: FC1 is the 64-row up/gate interleave [up_chunk(64), gate_chunk(64), up_chunk(64), ...] (the layout the split split FC1 kernel reads natively). For the SM12x fused path, see the sibling NvFP4MoEPluginGeforce plugin which consumes the plain [up_all, gate_all] concat layout.

Note

This plugin is only supported on SM100, SM101, and SM110.

Note

This plugin is only supported on FP16 I/O.

Note

The split FC1/FC2 path supports swiglu and relu2 with E=128, 0 < top_k <= 8.

Public Functions

Nvfp4MoePlugin(

std::string const &name,

int32_t numExperts,

int32_t topK,

int32_t hiddenSize,

int32_t moeInterSize,

int32_t activationType,

int32_t nGroup,

int32_t topkGroup,

int32_t normTopkProb,

float routedScalingFactor,

int32_t routingMode,

int32_t backend,

int32_t maxRoutedRows,

int32_t ioDtype

)

Nvfp4MoePlugin(

std::string const &name,

nvinfer1::PluginFieldCollection const *fc

)

Nvfp4MoePlugin() = delete

Nvfp4MoePlugin(Nvfp4MoePlugin const&) = delete

~Nvfp4MoePlugin() noexcept override

nvinfer1::IPluginCapability *getCapabilityInterface(

nvinfer1::PluginCapabilityType type

) noexcept override

nvinfer1::IPluginV3 *clone() noexcept override

char const *getPluginName() const noexcept override

char const *getPluginVersion() const noexcept override

char const *getPluginNamespace() const noexcept override

int32_t getNbOutputs() const noexcept override

int32_t getOutputDataTypes(

nvinfer1::DataType *outputTypes,

int32_t nbOutputs,

nvinfer1::DataType const *inputTypes,

int32_t nbInputs

) const noexcept override

int32_t getOutputShapes(

nvinfer1::DimsExprs const *inputs,

int32_t nbInputs,

nvinfer1::DimsExprs const *shapeInputs,

int32_t nbShapeInputs,

nvinfer1::DimsExprs *outputs,

int32_t nbOutputs,

nvinfer1::IExprBuilder &exprBuilder

) noexcept override

bool supportsFormatCombination(

int32_t pos,

nvinfer1::DynamicPluginTensorDesc const *inOut,

int32_t nbInputs,

int32_t nbOutputs

) noexcept override

int32_t configurePlugin(

nvinfer1::DynamicPluginTensorDesc const *in,

int32_t nbInputs,

nvinfer1::DynamicPluginTensorDesc const *out,

int32_t nbOutputs

) noexcept override

size_t getWorkspaceSize(

nvinfer1::DynamicPluginTensorDesc const *inputs,

int32_t nbInputs,

nvinfer1::DynamicPluginTensorDesc const *outputs,

int32_t nbOutputs

) const noexcept override

int32_t enqueue(

nvinfer1::PluginTensorDesc const *inputDesc,

nvinfer1::PluginTensorDesc const *outputDesc,

void const *const *inputs,

void *const *outputs,

void *workspace,

cudaStream_t stream

) noexcept override

int32_t onShapeChange(

nvinfer1::PluginTensorDesc const *in,

int32_t nbInputs,

nvinfer1::PluginTensorDesc const *out,

int32_t nbOutputs

) noexcept override

nvinfer1::IPluginV3 *attachToContext(

nvinfer1::IPluginResourceContext *context

) noexcept override

nvinfer1::PluginFieldCollection const *getFieldsToSerialize(

) noexcept override

void setPluginNamespace(char const *pluginNamespace) noexcept

class Nvfp4MoePluginCreator : public nvinfer1::IPluginCreatorV3One

Plugin creator — parses PluginFieldCollection into the attributes above, registers under TensorRT’s default namespace, exposes name “Nvfp4MoePlugin” / version “1”.

Public Functions

Nvfp4MoePluginCreator()

~Nvfp4MoePluginCreator() override = default

char const *getPluginName() const noexcept override

char const *getPluginVersion() const noexcept override

nvinfer1::PluginFieldCollection const *getFieldNames(

) noexcept override

char const *getPluginNamespace() const noexcept override

void setPluginNamespace(char const *pluginNamespace) noexcept

nvinfer1::IPluginV3 *createPlugin(

char const *name,

nvinfer1::PluginFieldCollection const *fc,

nvinfer1::TensorRTPhase phase

) noexcept override