Apache SINGA
A distributed deep learning platform .
 All Classes Namespaces Files Functions Variables Typedefs Macros
Public Member Functions | Protected Attributes | List of all members
singa::PrefetchLayer Class Reference

Layer for prefetching data records and parsing them. More...

#include <input_layer.h>

Inheritance diagram for singa::PrefetchLayer:
singa::Layer

Public Member Functions

void ComputeFeature (int flag, Metric *perf) override
 Compute features of this layer based on connected layers. More...
 
void ComputeGradient (int flag, Metric *perf) override
 Compute gradients for parameters and connected layers. More...
 
- Public Member Functions inherited from singa::Layer
virtual void Setup (const LayerProto &proto, int npartitions=1)
 Setup layer properties. More...
 
virtual const std::vector
< Param * > 
GetParams () const
 Layers that have paramters must override this function. More...
 
virtual ConnectionType src_neuron_connection (int k) const
 Return the connection type between one neuron of this layer and its source layer. More...
 
virtual ConnectionType dst_layer_connection () const
 Return the connection type of this layer and all dst layers. More...
 
virtual const std::string DebugString (int step, int flag)
 For print debug info about each layer, e.g., norm of feature vector, norm of parameters. More...
 
int partition_dim () const
 
int partition_id () const
 
int type () const
 
const std::string & name () const
 Return name of this layer.
 
virtual const Blob< float > & data (const Layer *from) const
 
virtual Blob< float > * mutable_data (const Layer *from)
 
virtual const Blob< float > & grad (const Layer *from) const
 
virtual Blob< float > * mutable_grad (const Layer *from)
 
const std::vector< Layer * > srclayers () const
 return LayerS that connected to this layer
 
const std::vector< Layer * > dstlayers () const
 return LayerS that this layer connected to
 
int srclayers_size () const
 
int dstlayers_size () const
 
void clear_dstlayers ()
 
void clear_srclayers ()
 
void add_srclayer (Layer *src)
 
void add_dstlayer (Layer *dst)
 

Protected Attributes

std::thread thread_
 
- Protected Attributes inherited from singa::Layer
LayerProto layer_proto_
 
Blob< float > data_
 
Blob< float > grad_
 
std::vector< Layer * > srclayers_
 
std::vector< Layer * > dstlayers_
 

Additional Inherited Members

- Static Public Member Functions inherited from singa::Layer
static LayerCreate (const LayerProto &proto)
 

Detailed Description

Layer for prefetching data records and parsing them.

The data loading and parsing work is done by internal DataLayer and ParserLayer respectively. This layer controls the prefetching thread, i.e., creating and joining the prefetching thread.

Member Function Documentation

void singa::PrefetchLayer::ComputeFeature ( int  flag,
Metric perf 
)
overridevirtual

Compute features of this layer based on connected layers.

Parameters
perfpointer to Metric obj for collect and aggregate performance

Implements singa::Layer.

void singa::PrefetchLayer::ComputeGradient ( int  flag,
Metric perf 
)
inlineoverridevirtual

Compute gradients for parameters and connected layers.

Parameters
flagused to get the calling phase, e.g., forward of training (kForward | kTrain)
flagused to get the calling phase, e.g., forward of training

Implements singa::Layer.


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