hermes::RoundRobin Class Reference

#include <round_robin.h>

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Public Member Functions
Status	Placement (const std::vector< size_t > &blob_sizes, const std::vector< u64 > &node_state, const std::vector< TargetID > &targets, const api::Context &ctx, std::vector< PlacementSchema > &output)
size_t	GetNumDevices () const
int	GetCurrentDeviceIndex () const
DeviceID	GetDeviceByIndex (int i) const
void	SetCurrentDeviceIndex (int new_device_index)
Public Member Functions inherited from hermes::DPE
	DPE (PlacementPolicy policy)

Static Public Member Functions
static void	InitDevices (hermes::Config *config, std::shared_ptr< api::Hermes > result)
static void	InitDevices (int count, int start_val=0)

Private Member Functions
Status	AddSchema (size_t index, std::vector< u64 > &node_state, const std::vector< size_t > &blob_sizes, const std::vector< TargetID > &targets, PlacementSchema &output)

Private Attributes
std::mutex	device_index_mutex_

Static Private Attributes
static int	current_device_index_ {}
static std::vector< DeviceID >	devices_

Additional Inherited Members
Public Attributes inherited from hermes::DPE
std::vector< f32 >	bandwidths
Protected Member Functions inherited from hermes::DPE
std::vector< int >	GetValidSplitChoices (size_t blob_size)
bool	SplitBlob (size_t blob_size)
void	GetSplitSizes (size_t blob_size, std::vector< size_t > &output)
Protected Attributes inherited from hermes::DPE
PlacementPolicy	policy_

Detailed Description

Represents the state of a Round-Robin data placement strategy

Member Function Documentation

Placement()

Status hermes::RoundRobin::Placement ( const std::vector< size_t > &  blob_sizes, const std::vector< u64 > &  node_state, const std::vector< TargetID > &  targets, const api::Context &  ctx, std::vector< PlacementSchema > &  output  )

virtual

set placement schema given BLOB sizes, node states, targets, and context.

Implements hermes::DPE.

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GetNumDevices()

size_t hermes::RoundRobin::GetNumDevices

(

)

const

Retrieves the number of devices

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GetCurrentDeviceIndex()

int hermes::RoundRobin::GetCurrentDeviceIndex

(

)

const

Retrieves the current device index

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GetDeviceByIndex()

DeviceID hermes::RoundRobin::GetDeviceByIndex

(

int

i

)

const

Retrieves the device ID at a given index

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SetCurrentDeviceIndex()

void hermes::RoundRobin::SetCurrentDeviceIndex

(

int

new_device_index

)

Re-/Sets the current device index

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InitDevices() [1/2]

void hermes::RoundRobin::InitDevices ( hermes::Config *  config, std::shared_ptr< api::Hermes >  result  )

static

Initialize the static variable for devices

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InitDevices() [2/2]

void hermes::RoundRobin::InitDevices ( int  count, int  start_val = 0  )

static

Initialize count devices with start_val value

AddSchema()

Status hermes::RoundRobin::AddSchema ( size_t  index, std::vector< u64 > &  node_state, const std::vector< size_t > &  blob_sizes, const std::vector< TargetID > &  targets, PlacementSchema &  output  )

private

add placement schema to output

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Member Data Documentation

current_device_index_

int hermes::RoundRobin::current_device_index_ {}

inlinestaticprivate

The current device index

devices_

std::vector< DeviceID > hermes::RoundRobin::devices_

staticprivate

A list of device targets

device_index_mutex_

std::mutex hermes::RoundRobin::device_index_mutex_

private

Protect index updates

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

• /home/runner/work/hermes/hermes/src/dpe/round_robin.h
• /home/runner/work/hermes/hermes/src/dpe/round_robin.cc