ArmNN
 24.02
RefBackend.cpp
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1 //
2 // Copyright © 2022-2023 Arm Ltd and Contributors. All rights reserved.
3 // SPDX-License-Identifier: MIT
4 //
5 
6 #include "RefBackend.hpp"
7 #include "RefBackendId.hpp"
8 #include "RefWorkloadFactory.hpp"
9 #include "RefLayerSupport.hpp"
11 
18 
19 namespace armnn
20 {
21 
23 {
24  static const BackendId s_Id{RefBackendId()};
25  return s_Id;
26 }
27 
29  const IBackendInternal::IMemoryManagerSharedPtr& memoryManager) const
30 {
31  return std::make_unique<RefWorkloadFactory>(PolymorphicPointerDowncast<RefMemoryManager>(memoryManager));
32 }
33 
35  class TensorHandleFactoryRegistry& tensorHandleFactoryRegistry) const
36 {
37  auto memoryManager = std::make_shared<RefMemoryManager>();
38 
39  tensorHandleFactoryRegistry.RegisterMemoryManager(memoryManager);
40 
41  std::unique_ptr<RefTensorHandleFactory> factory = std::make_unique<RefTensorHandleFactory>(memoryManager);
42  // Register copy and import factory pair
43  tensorHandleFactoryRegistry.RegisterCopyAndImportFactoryPair(factory->GetId(), factory->GetId());
44  // Register the factory
45  tensorHandleFactoryRegistry.RegisterFactory(std::move(factory));
46 
47  return std::make_unique<RefWorkloadFactory>(PolymorphicPointerDowncast<RefMemoryManager>(memoryManager));
48 }
49 
51 {
52  return IBackendContextPtr{};
53 }
54 
57 {
59 }
60 
62 {
63  return std::make_unique<RefMemoryManager>();
64 }
65 
67 {
68  static ILayerSupportSharedPtr layerSupport{new RefLayerSupport};
69  return layerSupport;
70 }
71 
73  const ModelOptions& modelOptions) const
74 {
75  OptimizationViews optimizationViews(modelOptions);
76 
77  auto it = subgraph.end();
78  std::map<LayerGuid, Layer*> untouched;
79 
80  while (it != subgraph.begin())
81  {
82  --it;
83  Layer& base = *(PolymorphicDowncast<Layer*>(*it));
84  untouched.insert({base.GetGuid(), &base});
85  }
86 
87  it = subgraph.end();
88  while (it != subgraph.begin())
89  {
90  --it;
91  Layer& base = *(PolymorphicDowncast<Layer*>(*it));
92 
93  // Special case to fuse padding into average pooling 2d for quantized datatype.
94  // Required to be done as a backend specific optimization as Neon does not support this special case.
95  if (base.GetType() == LayerType::Pooling2d)
96  {
97  Pooling2dLayer* baseLayer = PolymorphicDowncast<Pooling2dLayer*>(&base);
98  Pooling2dDescriptor poolingDescriptor = baseLayer->GetParameters();
99 
101  {
102  PadLayer* padLayer = PolymorphicDowncast<PadLayer*>(
104  if (padLayer->GetOutputSlot(0).GetNumConnections() == 1 &&
106  poolingDescriptor,
107  padLayer->GetOutputSlot().GetTensorInfo(),
108  true))
109  {
110  FoldPadIntoAveragePool2d<Pooling2dLayer>(optimizationViews, baseLayer,
111  poolingDescriptor, padLayer);
112  untouched.erase(baseLayer->GetGuid());
113  untouched.erase(padLayer->GetGuid());
114  }
115  }
116  }
117 
118  // Remove Reshape where possible
119  if (base.GetType() == LayerType::Reshape)
120  {
121  ReshapeLayer* baseLayer = PolymorphicDowncast<ReshapeLayer*>(&base);
122  RemoveReshapeLayer(baseLayer, untouched, optimizationViews);
123  }
124  }
125 
126  if (optimizationViews.GetSubstitutions().empty() && optimizationViews.GetDeletedSubgraphs().empty())
127  {
128  optimizationViews.AddUntouchedSubgraph(SubgraphView(subgraph));
129  }
130  else
131  {
132  ReportUntouchedLayers(optimizationViews, untouched);
133  }
134 
135  return optimizationViews;
136 }
137 
138 std::vector<ITensorHandleFactory::FactoryId> RefBackend::GetHandleFactoryPreferences() const
139 {
140  return std::vector<ITensorHandleFactory::FactoryId> { RefTensorHandleFactory::GetIdStatic() };
141 }
142 
144 {
145  auto memoryManager = std::make_shared<RefMemoryManager>();
146 
147  registry.RegisterMemoryManager(memoryManager);
148 
149  std::unique_ptr<RefTensorHandleFactory> factory = std::make_unique<RefTensorHandleFactory>(memoryManager);
150 
151  // Register copy and import factory pair
152  registry.RegisterCopyAndImportFactoryPair(factory->GetId(), factory->GetId());
153  // Register the factory
154  registry.RegisterFactory(std::move(factory));
155 }
156 
157 std::unique_ptr<ICustomAllocator> RefBackend::GetDefaultAllocator() const
158 {
159  return std::make_unique<DefaultAllocator>();
160 }
161 
163 {
164  ExecutionData executionData;
165  executionData.m_Data = &workingMemDescriptor;
166  return executionData;
167 }
168 
169 void RefBackend::UpdateExecutionData(ExecutionData& executionData, WorkingMemDescriptor& workingMemDescriptor) const
170 {
171  executionData.m_Data = &workingMemDescriptor;
172 }
173 
174 } // namespace armnn
armnn::OptimizationViews::AddUntouchedSubgraph
void AddUntouchedSubgraph(SubgraphView &&subgraph)
Definition: OptimizationViews.hpp:48
armnn::RefBackend::OptimizeSubgraphView
OptimizationViews OptimizeSubgraphView(const SubgraphView &subgraph, const ModelOptions &modelOptions) const override
Definition: RefBackend.cpp:72
armnn::RefBackend::CreateBackendProfilingContext
IBackendInternal::IBackendProfilingContextPtr CreateBackendProfilingContext(const IRuntime::CreationOptions &creationOptions, IBackendProfilingPtr &backendProfiling) override
Create context specifically used for profiling interaction from backends.
Definition: RefBackend.cpp:55
armnn::OutputSlot::GetTensorInfo
const TensorInfo & GetTensorInfo() const override
Definition: Layer.cpp:92
armnn::RefBackend::CreateBackendContext
IBackendInternal::IBackendContextPtr CreateBackendContext(const IRuntime::CreationOptions &) const override
Create the runtime context of the backend.
Definition: RefBackend.cpp:50
DefaultAllocator.hpp
armnn::IBackendInternal::IMemoryManagerSharedPtr
std::shared_ptr< IMemoryManager > IMemoryManagerSharedPtr
Definition: IBackendInternal.hpp:99
armnn::TensorHandleFactoryRegistry
Definition: TensorHandleFactoryRegistry.hpp:23
armnn::experimental::ExecutionData::m_Data
void * m_Data
Definition: ExecutionData.hpp:16
armnn::RefLayerSupport
Definition: RefLayerSupport.hpp:12
armnn::RefTensorHandleFactory::GetIdStatic
static const FactoryId & GetIdStatic()
Definition: RefTensorHandleFactory.cpp:16
armnn::RefBackendId
constexpr const char * RefBackendId()
Definition: RefBackendId.hpp:10
armnn::Layer::GetOutputSlot
const OutputSlot & GetOutputSlot(unsigned int index=0) const override
Get the const output slot handle by slot index.
Definition: Layer.hpp:339
armnn::TensorHandleFactoryRegistry::RegisterMemoryManager
void RegisterMemoryManager(std::shared_ptr< IMemoryManager > memoryManger)
Register a memory manager with shared ownership.
Definition: TensorHandleFactoryRegistry.cpp:34
BackendRegistry.hpp
RefLayerSupport.hpp
armnn::IBackendInternal::IBackendContextPtr
std::unique_ptr< IBackendContext > IBackendContextPtr
Definition: IBackendInternal.hpp:90
armnn::Layer::GetInputSlot
const InputSlot & GetInputSlot(unsigned int index) const override
Get a const input slot handle by slot index.
Definition: Layer.hpp:337
armnn::LayerWithParameters::GetParameters
const Parameters & GetParameters() const override
If the layer has a descriptor return it.
Definition: LayerWithParameters.hpp:19
armnn::RefBackend::CreateMemoryManager
IBackendInternal::IMemoryManagerUniquePtr CreateMemoryManager() const override
Definition: RefBackend.cpp:61
armnn::RefBackend::GetIdStatic
static const BackendId & GetIdStatic()
Definition: RefBackend.cpp:22
armnn::RefBackend::GetDefaultAllocator
std::unique_ptr< ICustomAllocator > GetDefaultAllocator() const override
Returns the default memory allocator for the backend.
Definition: RefBackend.cpp:157
armnn::Layer
Definition: Layer.hpp:230
armnn::OutputSlot::GetOwningLayer
Layer & GetOwningLayer() const
Definition: Layer.hpp:132
armnn::optimizations::pad_fold::TryFoldPadIntoLayer2d
bool TryFoldPadIntoLayer2d(const PadDescriptor &padDescriptor, Descriptor &layerDescriptor, const TensorInfo &tensorInfo)
Definition: FoldPadIntoLayer2d.hpp:88
armnn::ReshapeLayer
This layer represents a reshape operation.
Definition: ReshapeLayer.hpp:15
RefBackendId.hpp
armnn::SubgraphView::begin
IConnectableLayerIterator begin()
Definition: SubgraphView.cpp:283
armnn::RemoveReshapeLayer
void RemoveReshapeLayer(ReshapeLayer *baseLayer, std::map< LayerGuid, Layer * > &untouched, OptimizationViews &optimizationViews)
Definition: SubgraphUtils.hpp:293
armnn::OutputSlot::GetNumConnections
unsigned int GetNumConnections() const override
Definition: Layer.hpp:158
IBackendContext.hpp
PolymorphicDowncast.hpp
armnn::RefBackend::GetLayerSupport
IBackendInternal::ILayerSupportSharedPtr GetLayerSupport() const override
Definition: RefBackend.cpp:66
armnn::Layer::GetGuid
LayerGuid GetGuid() const final
Returns the unique id of the layer.
Definition: Layer.hpp:343
armnn::SubgraphView
The SubgraphView class represents a subgraph of a Graph.
Definition: SubgraphView.hpp:31
armnn::OptimizationViews
Definition: OptimizationViews.hpp:17
armnn::Pooling2dLayer
This layer represents a pooling 2d operation.
Definition: Pooling2dLayer.hpp:13
armnn::RefBackend::CreateWorkloadFactory
IBackendInternal::IWorkloadFactoryPtr CreateWorkloadFactory(const IBackendInternal::IMemoryManagerSharedPtr &memoryManager=nullptr) const override
Definition: RefBackend.cpp:28
armnn::RefBackend::RegisterTensorHandleFactories
void RegisterTensorHandleFactories(class TensorHandleFactoryRegistry &registry) override
(Optional) Register TensorHandleFactories Either this method or CreateMemoryManager() and IWorkloadFa...
Definition: RefBackend.cpp:143
armnn::LayerType::Pooling2d
@ Pooling2d
armnn::RefBackend::CreateExecutionData
ExecutionData CreateExecutionData(WorkingMemDescriptor &workingMemDescriptor) const override
Returns ExecutionData for the backend.
Definition: RefBackend.cpp:162
armnn::IBackendInternal::IBackendProfilingContextPtr
std::shared_ptr< arm::pipe::IBackendProfilingContext > IBackendProfilingContextPtr
This is the bridge between backend and backend profiling we'll keep it in the backend namespace.
Definition: IBackendInternal.hpp:92
RefWorkloadFactory.hpp
armnn::Layer::GetType
LayerType GetType() const override
Returns the armnn::LayerType of this layer.
Definition: Layer.hpp:286
armnn::IBackendInternal::IBackendProfilingPtr
std::unique_ptr< arm::pipe::IBackendProfiling > IBackendProfilingPtr
Definition: IBackendInternal.hpp:93
armnn::IRuntime::CreationOptions
Definition: IRuntime.hpp:78
armnn::RefBackend::UpdateExecutionData
void UpdateExecutionData(ExecutionData &executionData, WorkingMemDescriptor &workingMemDescriptor) const override
Update the ExecutionData for a layer.
Definition: RefBackend.cpp:169
armnn::LayerType::Reshape
@ Reshape
armnn::IBackendInternal::IMemoryManagerUniquePtr
std::unique_ptr< IMemoryManager > IMemoryManagerUniquePtr
Definition: IBackendInternal.hpp:98
RefBackend.hpp
armnn::OptimizationViews::GetSubstitutions
const Substitutions & GetSubstitutions() const
Definition: OptimizationViews.hpp:58
armnn::SubgraphView::end
IConnectableLayerIterator end()
Definition: SubgraphView.cpp:288
armnn::OptimizationViews::GetDeletedSubgraphs
const Subgraphs & GetDeletedSubgraphs() const
Definition: OptimizationViews.hpp:61
armnn::BackendId
Definition: BackendId.hpp:75
armnn::InputSlot::GetConnectedOutputSlot
const OutputSlot * GetConnectedOutputSlot() const
Definition: Layer.hpp:56
armnn
Copyright (c) 2021 ARM Limited and Contributors.
Definition: 01_00_quick_start.dox:6
armnn::experimental::WorkingMemDescriptor
Definition: WorkingMemDescriptor.hpp:18
armnn::LayerType::Pad
@ Pad
armnn::TensorHandleFactoryRegistry::RegisterFactory
void RegisterFactory(std::unique_ptr< ITensorHandleFactory > allocator)
Register a TensorHandleFactory and transfer ownership.
Definition: TensorHandleFactoryRegistry.cpp:12
armnn::IBackendInternal::ILayerSupportSharedPtr
std::shared_ptr< ILayerSupport > ILayerSupportSharedPtr
Definition: IBackendInternal.hpp:94
armnn::TensorHandleFactoryRegistry::RegisterCopyAndImportFactoryPair
void RegisterCopyAndImportFactoryPair(ITensorHandleFactory::FactoryId copyFactoryId, ITensorHandleFactory::FactoryId importFactoryId)
Register a pair of TensorHandleFactory Id for Memory Copy and TensorHandleFactory Id for Memory Impor...
Definition: TensorHandleFactoryRegistry.cpp:66
armnn::ModelOptions
std::vector< BackendOptions > ModelOptions
Definition: BackendOptions.hpp:18
armnn::RefBackend::GetHandleFactoryPreferences
std::vector< ITensorHandleFactory::FactoryId > GetHandleFactoryPreferences() const override
(Optional) Returns a vector of supported TensorHandleFactory ids in preference order.
Definition: RefBackend.cpp:138
armnn::ReportUntouchedLayers
void ReportUntouchedLayers(OptimizationViews &optimizationViews, std::map< LayerGuid, Layer * > untouched)
Definition: SubgraphUtils.hpp:220
armnn::Pooling2dDescriptor
A Pooling2dDescriptor for the Pooling2dLayer.
Definition: Descriptors.hpp:371
armnn::IBackendInternal::IWorkloadFactoryPtr
std::unique_ptr< IWorkloadFactory > IWorkloadFactoryPtr
Definition: IBackendInternal.hpp:89
SubgraphUtils.hpp
RefTensorHandleFactory.hpp
IMemoryManager.hpp
armnn::PadLayer
This layer represents a pad operation.
Definition: PadLayer.hpp:14
armnn::experimental::ExecutionData
Definition: ExecutionData.hpp:14