LightGBM::RecursiveHalvingMap Class Reference

Network structure for recursive halving algorithm. More...

#include <network.h>

Public Member Functions
	RecursiveHalvingMap (int k, RecursiveHalvingNodeType _type, bool _is_power_of_2)

Static Public Member Functions
static RecursiveHalvingMap	Construct (int rank, int num_machines)
	Create the object of recursive halving map.

Data Fields
int	k
	Communication times for one recursize halving algorithm
RecursiveHalvingNodeType	type
	Node type.
bool	is_power_of_2
int	neighbor
std::vector< int >	ranks
	ranks[i] means the machines that will communicate with on i-th communication
std::vector< int >	send_block_start
	send_block_start[i] means send block start index at i-th communication
std::vector< int >	send_block_len
	send_block_start[i] means send block size at i-th communication
std::vector< int >	recv_block_start
	send_block_start[i] means recv block start index at i-th communication
std::vector< int >	recv_block_len
	send_block_start[i] means recv block size at i-th communication

Detailed Description

Network structure for recursive halving algorithm.

Member Function Documentation

Construct()

RecursiveHalvingMap LightGBM::RecursiveHalvingMap::Construct ( int  rank, int  num_machines  )

static

Create the object of recursive halving map.

Parameters

rank	Rank of this machine
num_machines	The total number of machines

Returns

The object of recursive halving map

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

• External/LightGBM_2.2.3/LightGBM-2.2.3/include/LightGBM/network.h
• External/LightGBM_2.2.3/LightGBM-2.2.3/src/network/linker_topo.cpp