moco::MaxPoolGraphBuilder Class Reference

#include <MaxPool.h>

Collaboration diagram for moco::MaxPoolGraphBuilder:

Public Member Functions
bool	validate (const tensorflow::NodeDef &) const final
void	build (const tensorflow::NodeDef &, GraphBuilderContext *) const final
Public Member Functions inherited from moco::GraphBuilder
virtual	~GraphBuilder ()

Detailed Description

Definition at line 25 of file MaxPool.h.

Member Function Documentation

build()

void moco::MaxPoolGraphBuilder::build ( const tensorflow::NodeDef &  node, GraphBuilderContext *  context  ) const

finalvirtual

Implements moco::GraphBuilder.

Definition at line 97 of file MaxPool.cpp.

{
  assert(context != nullptr);
 
  loco::Graph *graph = context->graph();
  SymbolTable *tensor_names = context->tensor_names();
  UpdateQueue *updates = context->updates();
 
  // name of loco nodes
  ::std::string node_name = node.name();
 
  // tensorflow data_format: one of NHWC or NCHW.
  auto data_layout = plier::tf::get_string_attr(node, "data_format");
  auto maxPool_node = graph->nodes()->create<TFMaxPool>();
  maxPool_node->name(node.name());
  maxPool_node->data_layout(data_layout);
 
  // padding
  auto padding = moco::str_toupper(plier::tf::get_string_attr(node, "padding"));
  maxPool_node->padding(padding);
 
  // ksize
  auto tf_ksize = plier::tf::get_list_attr(node, "ksize");
  auto ksize = plier::tf::as_int64_list(tf_ksize);
  assert(ksize.size() == 4);
  maxPool_node->ksize(ksize);
 
  // strides
  auto tf_strides = plier::tf::get_list_attr(node, "strides");
  auto strides = plier::tf::as_int64_list(tf_strides);
  assert(strides.size() == 4);
  maxPool_node->strides(strides);
 
  // To set the input node of encode_node with node_name
  TensorName output_name(node_name, 0);
  tensor_names->enroll(output_name, maxPool_node);
 
  // Record ifm inputs to featureEncode_node
  auto update = std::make_unique<TFMaxPoolGraphUpdate>(maxPool_node, TensorName(node.input(0)));
 
  updates->enroll(std::move(update));
}

References plier::tf::as_int64_list(), moco::SymbolTable::enroll(), moco::UpdateQueue::enroll(), plier::tf::get_list_attr(), plier::tf::get_string_attr(), moco::GraphBuilderContext::graph(), moco::TFNode::name(), moco::str_toupper(), moco::GraphBuilderContext::tensor_names(), moco::update(), and moco::GraphBuilderContext::updates().

validate()

bool moco::MaxPoolGraphBuilder::validate ( const tensorflow::NodeDef &  node ) const

finalvirtual

Implements moco::GraphBuilder.

Definition at line 65 of file MaxPool.cpp.

{
  // note: even though "data_format" is not entered when a model is written,
  //       TF seems to generate "data_format" field into a pb file
  if (!plier::tf::has_attrs(node, {"T", "data_format", "ksize", "padding", "strides"}))
    return false;
 
  auto data_layout = plier::tf::get_string_attr(node, "data_format");
  if (!(data_layout == "NHWC" || data_layout == "NCHW"))
  {
    throw oops::UserExn("MaxPool Unsupported data_format", node.name());
  }
 
  auto tf_ksize = plier::tf::get_list_attr(node, "ksize");
  auto ksize = plier::tf::as_int64_list(tf_ksize);
  if (ksize.size() != 4)
  {
    // TODO support ksize length for 1 and 2
    throw oops::UserExn("MaxPool ksize requires rank 4", node.name());
  }
 
  auto tf_strides = plier::tf::get_list_attr(node, "strides");
  auto strides = plier::tf::as_int64_list(tf_strides);
  if (strides.size() != 4)
  {
    // TODO support strides length for 1 and 2
    throw oops::UserExn("MaxPool strides requires rank 4", node.name());
  }
 
  return true;
}

References plier::tf::as_int64_list(), plier::tf::get_list_attr(), plier::tf::get_string_attr(), and plier::tf::has_attrs().

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

• compiler/moco/import/include/moco/Import/Nodes/MaxPool.h
• compiler/moco/import/src/Nodes/MaxPool.cpp