IOptimizedNetwork Class Reference

#include <INetwork.hpp>

Public Member Functions
Status	PrintGraph ()
Status	SerializeToDot (std::ostream &stream) const
profiling::ProfilingGuid	GetGuid () const
	IOptimizedNetwork (std::unique_ptr< Graph > graph)
	IOptimizedNetwork (std::unique_ptr< OptimizedNetworkImpl > impl)
	~IOptimizedNetwork ()

Static Public Member Functions
static void	Destroy (IOptimizedNetwork *network)

Protected Member Functions
	IOptimizedNetwork (std::unique_ptr< Graph > graph, const ModelOptions &modelOptions)

Protected Attributes
std::unique_ptr< OptimizedNetworkImpl >	pOptimizedNetworkImpl

Friends
class	LoadedNetwork
Graph &	GetGraphForTesting (IOptimizedNetwork *optNetPtr)
ModelOptions &	GetModelOptionsForTesting (IOptimizedNetwork *optNetPtr)
IOptimizedNetworkPtr	Optimize (const INetwork &inNetwork, const std::vector< BackendId > &backendPreferences, const IDeviceSpec &deviceSpec, const OptimizerOptions &options, Optional< std::vector< std::string > &> messages)
	Create an optimized version of the network. More...

Detailed Description

Definition at line 699 of file INetwork.hpp.

Constructor & Destructor Documentation

IOptimizedNetwork() [1/3]

IOptimizedNetwork

(

std::unique_ptr< Graph >

graph

)

Definition at line 521 of file Network.cpp.

Referenced by armnn::Optimize().

    : pOptimizedNetworkImpl(new OptimizedNetworkImpl(std::move(graph))) {}

IOptimizedNetwork() [2/3]

IOptimizedNetwork

(

std::unique_ptr< OptimizedNetworkImpl >

impl

)

Definition at line 524 of file Network.cpp.

    : pOptimizedNetworkImpl(std::move(impl)) {}

~IOptimizedNetwork()

~IOptimizedNetwork ( )

default

Referenced by IOptimizedNetwork::IOptimizedNetwork().

IOptimizedNetwork() [3/3]

IOptimizedNetwork ( std::unique_ptr< Graph >  graph, const ModelOptions &  modelOptions  )

protected

Definition at line 527 of file Network.cpp.

References IOptimizedNetwork::~IOptimizedNetwork().

    : pOptimizedNetworkImpl(new OptimizedNetworkImpl(std::move(graph), modelOptions)) {}

Member Function Documentation

Destroy()

void Destroy ( IOptimizedNetwork *  network )

static

Definition at line 532 of file Network.cpp.

Referenced by armnn::Optimize().

{
    delete network;
}

GetGuid()

profiling::ProfilingGuid GetGuid

(

)

const

Definition at line 547 of file Network.cpp.

References IOptimizedNetwork::pOptimizedNetworkImpl.

{
    return pOptimizedNetworkImpl->GetGuid();
}

PrintGraph()

Status PrintGraph

(

)

Definition at line 537 of file Network.cpp.

References IOptimizedNetwork::pOptimizedNetworkImpl.

{
    return pOptimizedNetworkImpl->PrintGraph();
}

SerializeToDot()

Status SerializeToDot

(

std::ostream &

stream

)

const

Definition at line 542 of file Network.cpp.

References IOptimizedNetwork::pOptimizedNetworkImpl.

{
    return pOptimizedNetworkImpl->SerializeToDot(stream);
}

Friends And Related Function Documentation

GetGraphForTesting

Graph& GetGraphForTesting ( IOptimizedNetwork *  optNetPtr )

friend

Definition at line 25 of file TestUtils.cpp.

{
    return optNet->pOptimizedNetworkImpl->GetGraph();
}

GetModelOptionsForTesting

ModelOptions& GetModelOptionsForTesting ( IOptimizedNetwork *  optNetPtr )

friend

Definition at line 30 of file TestUtils.cpp.

{
    return optNet->pOptimizedNetworkImpl->GetModelOptions();
}

LoadedNetwork

friend class LoadedNetwork

friend

Definition at line 714 of file INetwork.hpp.

Optimize

IOptimizedNetworkPtr Optimize ( const INetwork &  inNetwork, const std::vector< BackendId > &  backendPreferences, const IDeviceSpec &  deviceSpec, const OptimizerOptions &  options = OptimizerOptions(), Optional< std::vector< std::string > &>  messages = EmptyOptional()  )

friend

Create an optimized version of the network.

Parameters

network	INetwork description of the network to be optimized.
backendPreferences	The choice of the backend ordered by user preferences.
deviceSpec	DeviceSpec object as queried from the runtime. See IRuntime::GetDeviceSpec()
messages	If there are failures or warnings a string describing same will be added to the vector
options	OptimizerOptions object with optimizer configuration options

Returns

An IOptimizedNetworkPtr interface to the optimized network, throws an exception derived from armnn::Exception if process fails.

Definition at line 1502 of file Network.cpp.

{
    if (backendPreferences.empty())
    {
        throw InvalidArgumentException("Invoked Optimize with no backends specified");
    }

    if (options.m_ReduceFp32ToFp16 && options.m_ReduceFp32ToBf16)
    {
        throw InvalidArgumentException("BFloat16 and Float16 optimization cannot be enabled at the same time.");
    }

    std::unique_ptr<Graph> graph = std::make_unique<Graph>(inNetwork.pNetworkImpl->GetGraph());

    auto optNet = IOptimizedNetworkPtr(new IOptimizedNetwork(std::move(graph), options.m_ModelOptions),
                                       &IOptimizedNetwork::Destroy);

    IOptimizedNetwork* optNetObjPtr = optNet.get();

    // Get the optimized graph
    Graph& optGraph = optNetObjPtr->pOptimizedNetworkImpl->GetGraph();

    // Perform AddBroadcastReshapeLayer optimisation
    using namespace optimizations;
    Optimizer::Pass(optGraph, MakeOptimizations(AddBroadcastReshapeLayer()));

    // Infer the tensor infos for all output slots. Throws an exception on failure
    optGraph.InferTensorInfos();

    // Perform optimisation passes
    Optimizer::Pass(optGraph, MakeOptimizations(SquashEqualPermuteSiblings(),
                                                SquashEqualTransposeSiblings(),
                                                SquashEqualReshapeSiblings(),
                                                OptimizeInversePermutes(),
                                                OptimizeInverseTransposes(),
                                                MovePermuteUp(),
                                                MoveTransposeUp(),
                                                PermuteAsReshape(),
                                                TransposeAsReshape(),
                                                OptimizeConsecutiveReshapes(),
                                                FoldPadIntoConvolution2d(),
                                                PermuteAndBatchToSpaceAsDepthToSpace(),
                                                TransposeAndBatchToSpaceAsDepthToSpace(),
                                                FuseBatchNormIntoConvolution2DFloat32(),
                                                FuseBatchNormIntoConvolution2DFloat16(),
                                                FuseBatchNormIntoDepthwiseConvolution2DFloat32(),
                                                FuseBatchNormIntoDepthwiseConvolution2DFloat16()));

    // If Fp32 to Fp16 optimization is set convert Fp32 network to Fp16
    if (options.m_ReduceFp32ToFp16)
    {
        Optimizer::Pass(optGraph, MakeOptimizations(Fp32NetworkToFp16Converter()));
        Optimizer::Pass(optGraph, MakeOptimizations(ConvertConstantsFloatToHalf()));
    }

    // If Fp32 to Bf16 optimization is set convert Fp32 network to Bf16
    // Convert input of Convolution2d and FullyConnected from Fp32 to Bf16
    // Only Constant weight of Convolution2d and FullyConnected are converted from Fp32 to Bf16
    if (options.m_ReduceFp32ToBf16)
    {
        Optimizer::Pass(optGraph, MakeOptimizations(Fp32NetworkToBf16Converter()));
    }

    // Initialize backend settings
    BackendSettings backendSettings(backendPreferences, deviceSpec);
    if (backendSettings.GetAvailablePreferredBackends().empty())
    {
        std::stringstream failureMsg;
        failureMsg << "None of the preferred backends " << backendPreferences
                   << " are supported. Current platform provides " << backendSettings.m_SupportedBackends;
        ReportError(failureMsg.str(), messages);
        throw InvalidArgumentException(failureMsg.str());
    }

    // Create a map to temporarily hold initialized backend objects
    TensorHandleFactoryRegistry tensorHandleFactoryRegistry;
    BackendsMap backends = CreateSupportedBackends(tensorHandleFactoryRegistry, backendSettings);

    // Assign an available backend to each layer
    Graph::Iterator firstLayer = optGraph.begin();
    Graph::Iterator lastLayer  = optGraph.end();
    OptimizationResult assignBackendsResult = AssignBackends(optNetObjPtr->pOptimizedNetworkImpl.get(),
                                                             backendSettings,
                                                             firstLayer,
                                                             lastLayer,
                                                             messages);
    if (assignBackendsResult.m_Error)
    {
        // Failed to assign a backend to each layer
        throw InvalidArgumentException("Failed to assign a backend to each layer");
    }

    Optimizer::Pass(optGraph, MakeOptimizations(OptimizeInverseConversionsFp16(),
                                                OptimizeInverseConversionsFp32()));

    // Apply the backend-specific optimizations
    OptimizationResult backendOptimizationResult = ApplyBackendOptimizations(optNetObjPtr->pOptimizedNetworkImpl.get(),
                                                                             backendSettings,
                                                                             backends,
                                                                             options.m_ModelOptions,
                                                                             messages);
    if (backendOptimizationResult.m_Error)
    {
        // Failed to apply the backend-specific optimizations
        throw InvalidArgumentException("Failed to apply the backend-specific optimizations");
    }

    // If the debug flag is set, then insert a DebugLayer after each layer
    // Doing this after applying the backend optimizations as they might have changed some layers
    if (options.m_Debug)
    {
        Optimizer::Pass(optGraph, MakeOptimizations(InsertDebugLayer()));
    }

    // Calculate the compatibility strategies for tensor handles
    OptimizationResult strategyResult = SelectTensorHandleStrategy(optGraph,
                                                                   backends,
                                                                   tensorHandleFactoryRegistry,
                                                                   options.m_ImportEnabled,
                                                                   messages);
    if (strategyResult.m_Error)
    {
        // Failed to apply the backend-specific optimizations
        return IOptimizedNetworkPtr(nullptr, &IOptimizedNetwork::Destroy);
    }

    // Based on the tensor handle strategy determined above, insert copy layers where required.
    optGraph.AddCompatibilityLayers(backends, tensorHandleFactoryRegistry);

    // Convert constants
    Optimizer::Pass(optGraph, MakeOptimizations(ConvertConstantsFloatToHalf()));
    Optimizer::Pass(optGraph, MakeOptimizations(ConvertConstantsHalfToFloat()));

    // Run backend specific optimizations (deprecated)
    for (auto&& chosenBackend : backendSettings.m_SelectedBackends)
    {
        auto factoryFun = BackendRegistryInstance().GetFactory(chosenBackend);
        auto backendPtr = factoryFun();
        ARMNN_ASSERT(backendPtr.get() != nullptr);

        ARMNN_NO_DEPRECATE_WARN_BEGIN
        auto backendSpecificOptimizations = backendPtr->GetOptimizations();
        ARMNN_NO_DEPRECATE_WARN_END

        if (!backendSpecificOptimizations.empty())
        {
            Optimizer::Pass(optNetObjPtr->pOptimizedNetworkImpl->GetGraph(), backendSpecificOptimizations);
        }
    }

    return optNet;
}

Member Data Documentation

pOptimizedNetworkImpl

std::unique_ptr<OptimizedNetworkImpl> pOptimizedNetworkImpl

protected

Definition at line 725 of file INetwork.hpp.

Referenced by armnn::GetGraphForTesting(), IOptimizedNetwork::GetGuid(), armnn::GetModelOptionsForTesting(), armnn::Optimize(), IOptimizedNetwork::PrintGraph(), and IOptimizedNetwork::SerializeToDot().

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The documentation for this class was generated from the following files:

• include/armnn/INetwork.hpp
• src/armnn/Network.cpp