#include <BackendContext.h>

Collaboration diagram for onert::backend::builtin::train::BackendContext:

Public Member Functions
	BackendContext (const backend::train::ITrainableBackend *backend, std::unique_ptr< backend::train::TrainableContextData > &&data, std::shared_ptr< backend::train::ITensorRegistry > tensor_registry=nullptr, std::shared_ptr< TensorBuilder > tensor_builder=nullptr, std::shared_ptr< KernelGenerator > kernel_gen=nullptr)

backend::train::FunctionMap	gen () override

std::shared_ptr< ExternalContext >	external_context ()

Public Member Functions inherited from onert::backend::train::TrainableBackendContext
	TrainableBackendContext (const ITrainableBackend *backend, std::unique_ptr< TrainableContextData > &&tdata, std::shared_ptr< ITensorRegistry > tensor_registry=nullptr)

virtual	~TrainableBackendContext ()=default

const ir::train::TrainableGraph *	trainable_graph () const

const TrainableContextData *	data () const

const ITrainableBackend *	backend () const

const util::Set< ir::OperandIndex > &	external_operands () const

const ir::OperandIndexMap< ir::Layout > &	operand_layouts () const

std::shared_ptr< ITensorRegistry >	tensor_registry ()

Data Fields
std::shared_ptr< KernelGenerator >	kernel_gen

Additional Inherited Members
Protected Attributes inherited from onert::backend::train::TrainableBackendContext
std::unique_ptr< TrainableContextData >	_tdata

std::shared_ptr< ITensorRegistry >	_tensor_registry

Detailed Description

Definition at line 29 of file BackendContext.h.

Constructor & Destructor Documentation

◆ BackendContext()

onert::backend::builtin::train::BackendContext::BackendContext	(	const backend::train::ITrainableBackend *	backend,
		std::unique_ptr< backend::train::TrainableContextData > &&	data,
		std::shared_ptr< backend::train::ITensorRegistry >	tensor_registry = `nullptr`,
		std::shared_ptr< TensorBuilder >	tensor_builder = `nullptr`,
		std::shared_ptr< KernelGenerator >	kernel_gen = `nullptr`
	)

inline

Definition at line 32 of file BackendContext.h.

    : backend::train::TrainableBackendContext(backend, std::move(data), tensor_registry),
      kernel_gen{kernel_gen}, _external_context(new ExternalContext),
      _tensor_builder{tensor_builder}
  {
  }

Member Function Documentation

◆ external_context()

std::shared_ptr< ExternalContext > onert::backend::builtin::train::BackendContext::external_context ( )

inline

Definition at line 46 of file BackendContext.h.

46{ return _external_context; }

◆ gen()

backend::train::FunctionMap onert::backend::builtin::train::BackendContext::gen ( )

overridevirtual

Implements onert::backend::train::TrainableBackendContext.

Definition at line 25 of file BackendContext.cc.

{
  // For now, there is no need to generate tensors for forwarding and backwarding.
  // builtin train backend handles 3 operators: `Permute`, `IF`, `WHILE`.
  // `Permute`: Tensor generation is not required.
  // `IF`, `WHILE`: Not supported yet
 
  backend::train::FunctionMap fn_map;
 
  for (auto &&op_ind : _tdata->op_order)
  {
    auto tn_seq = kernel_gen->generate(op_ind);
    fn_map.emplace(op_ind, std::move(tn_seq));
  }
 
  trainable_graph()->operands().iterate(
    [&](const ir::OperandIndex &ind, const ir::Operand &operand) {
      if (!external_operands().contains(ind) && operand.isConstant())
      {
        throw std::runtime_error(
          "BackendContext: builtin backend does not support updatable weights yet");
      }
    });
 
  // TODO Enable prepare()
  // for (auto &&it : fn_map)
  // {
  //   auto &fn_seq = it.second;
  //   fn_seq->iterate([&](exec::IFunction &ifunc) { ifunc.prepare(); });
  // }
 
  return fn_map;
}

References onert::backend::train::TrainableBackendContext::_tdata, onert::backend::train::TrainableBackendContext::external_operands(), onert::ir::Operand::isConstant(), onert::util::ObjectManager< Index, Object >::iterate(), kernel_gen, onert::ir::train::TrainableGraph::operands(), and onert::backend::train::TrainableBackendContext::trainable_graph().

Field Documentation

◆ kernel_gen

std::shared_ptr<KernelGenerator> onert::backend::builtin::train::BackendContext::kernel_gen

Definition at line 50 of file BackendContext.h.

Referenced by gen().

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

runtime/onert/core/src/backend/builtin/train/BackendContext.h
runtime/onert/core/src/backend/builtin/train/BackendContext.cc

Public Member Functions

Data Fields

Additional Inherited Members