Wrappers around S4U's basic simulation methods. More...

#include <S4U_Simulation.h>

Public Member Functions
void	checkLinkBandwidths ()
	Method to check that all link bandwidths are >0.

void	initialize (int argc, char *argv)
	Initialize the Simgrid simulation. More...

bool	isInitialized ()
	Returns true if S4U_Simulation::initialize() has been called successfully previously. More...

bool	isPlatformSetup ()
	Returns true if S4U_Simulation::setupPlatform() has been called successfully previously. More...

void	runSimulation ()
	Start the simulation. More...

void	setupPlatform (std::string &)
	Initialize the simulated platform. Must only be called once. More...

void	shutdown ()
	Shutdown the simulation.

Static Public Member Functions
static void	compute (double)
	Simulates a computation on host on which the calling actor is running. More...

static void	computeZeroFlop ()
	Compute zero flop, which take zero time but will block if the host's pstate has a zero flop/sec speed, until the host's pstate is changed to a pstate with non-zero flop/sec speed.

static std::vector< std::string >	getAllHostnames ()
	Get the list of hostnames. More...

static std::map< std::string, std::vector< std::string > >	getAllHostnamesByCluster ()
	Get the by-cluster structure of the platform. More...

static std::vector< std::string >	getAllLinknames ()
	Get the list of link names. More...

static double	getClock ()
	Get the current simulation date. More...

static int	getCurrentPstate (const std::string &hostname)
	Get the current power state of a host. More...

static double	getDiskCapacity (std::string hostname, std::string mount_point)
	Gets the capacity of a disk attached to some host for a given mount point. More...

static std::vector< std::string >	getDisks (std::string hostname)
	Gets set of disks, i.e., mount points, available at a host. More...

static double	getEnergyConsumedByHost (const std::string &hostname)
	Get the energy consumed by the host up to now. More...

static double	getFlopRate ()
	Get the flop rate of the current host. More...

static double	getHostFlopRate (std::string hostname)
	Get the flop rate of a host. More...

static double	getHostMemoryCapacity (std::string hostname)
	Get the memory capacity of a host given a hostname. More...

static std::string	getHostName ()
	Get the hostname on which the calling actor is running. More...

static unsigned int	getHostNumCores (std::string hostname)
	Get the number of cores of a host. More...

static std::string	getHostProperty (std::string hostname, std::string property_name)
	Get the property associated to the host specified in the platform file. More...

static double	getLinkBandwidth (std::string name)
	Get a link's bandwidth. More...

static double	getLinkUsage (std::string name)
	Get a link's bandwidth usage. More...

static std::vector< int >	getListOfPstates (const std::string &hostname)
	Get the list of power states available for a host. More...

static double	getMaxPowerConsumption (const std::string &hostname)
	Get the maximum power consumption (i.e., 100% load) for a host at its current pstate. More...

static double	getMemoryCapacity ()
	Get the memory capacity of the current host. More...

static double	getMinPowerConsumption (const std::string &hostname)
	Get the minimum power consumption (i.e., idling) for a host at its current pstate. More...

static int	getNumberofPstates (const std::string &hostname)
	Get the total number of power states of a host. More...

static unsigned int	getNumCores ()
	Get the number of cores of the current host. More...

static bool	hostExists (std::string hostname)
	Determines whether a host exists for a given hostname. More...

static bool	hostHasMountPoint (std::string hostname, std::string mount_point)
	Determines whether a mount point is defined at a host. More...

static bool	isHostOn (std::string hostname)
	Returns whether a host is on or not. More...

static bool	isLinkOn (std::string linkname)
	Returns whether a link is on or not. More...

static bool	linkExists (std::string linkname)
	Determines whether a link exists for a given linkname. More...

static void	readFromDisk (double num_bytes, std::string hostname, std::string mount_point)
	Simulates a disk read. More...

static void	readFromDiskAndWriteToDiskConcurrently (double num_bytes_to_read, double num_bytes_to_write, std::string hostname, std::string read_mount_point, std::string write_mount_point)
	Read from a local disk and write to a local disk concurrently. More...

static void	setPstate (const std::string &hostname, int pstate)
	Set the power state of the host. More...

static void	sleep (double)
	Simulates a sleep. More...

static void	turnOffHost (std::string hostname)
	Turn off a host. More...

static void	turnOffLink (std::string linkname)
	Turn off a link. More...

static void	turnOnHost (std::string hostname)
	Turn on a host. More...

static void	turnOnLink (std::string linkname)
	Turn on a link. More...

static void	writeToDisk (double num_bytes, std::string hostname, std::string mount_point)
	Simulates a disk write. More...

static void	yield ()
	Simulates a yield.

Static Public Attributes
static constexpr double	DEFAULT_RAM = (1024.0 * 1024.0 * 1024.0 * 1024.0 * 1024.0)
	The ram capacity of a physical host whenever not specified in the platform description file.

Detailed Description

Wrappers around S4U's basic simulation methods.

Member Function Documentation

◆ compute()

void wrench::S4U_Simulation::compute ( double flops )

static

Simulates a computation on host on which the calling actor is running.

Parameters

flops the number of flops

◆ getAllHostnames()

std::vector< std::string > wrench::S4U_Simulation::getAllHostnames ( )

static

Get the list of hostnames.

Returns: a vector of hostnames

◆ getAllHostnamesByCluster()

std::map< std::string, std::vector< std::string > > wrench::S4U_Simulation::getAllHostnamesByCluster ( )

static

Get the by-cluster structure of the platform.

Returns: a map of all cluster names and their associated hostname list

◆ getAllLinknames()

std::vector< std::string > wrench::S4U_Simulation::getAllLinknames ( )

static

Get the list of link names.

Returns: a vector of link names

◆ getClock()

double wrench::S4U_Simulation::getClock ( )

static

Get the current simulation date.

Returns: the simulation clock

◆ getCurrentPstate()

int wrench::S4U_Simulation::getCurrentPstate ( const std::string & hostname )

static

Get the current power state of a host.

Parameters

hostname the host name

Returns: The index of the current pstate of the host (as specified in the platform xml description file)

Exceptions

std::runtime_error

◆ getDiskCapacity()

double wrench::S4U_Simulation::getDiskCapacity	(	std::string	hostname,
		std::string	mount_point
	)

static

Gets the capacity of a disk attached to some host for a given mount point.

Parameters

hostname	the host's name
mount_point	the mount point (e.g., "/home")

Returns: the capacity of the disk / mount point

Exceptions

std::invalid_argument

◆ getDisks()

std::vector< std::string > wrench::S4U_Simulation::getDisks ( std::string hostname )

static

Gets set of disks, i.e., mount points, available at a host.

Parameters

hostname the host's name

Returns: a vector of mount points

Exceptions

std::invalid_argument

◆ getEnergyConsumedByHost()

double wrench::S4U_Simulation::getEnergyConsumedByHost ( const std::string & hostname )

static

Get the energy consumed by the host up to now.

Parameters

hostname the host name

Returns: the energy consumed by the host in Joules

Exceptions

std::invalid_argument
std::runtime_error

◆ getFlopRate()

double wrench::S4U_Simulation::getFlopRate ( )

static

Get the flop rate of the current host.

Returns: the flop rate in floating point operations per second

Exceptions

std::invalid_argument

◆ getHostFlopRate()

double wrench::S4U_Simulation::getHostFlopRate ( std::string hostname )

static

Get the flop rate of a host.

Parameters

hostname the name of the host

Returns: the flop rate in floating point operations per second

Exceptions

std::invalid_argument

◆ getHostMemoryCapacity()

double wrench::S4U_Simulation::getHostMemoryCapacity ( std::string hostname )

static

Get the memory capacity of a host given a hostname.

Parameters

hostname the name of the host

Returns: a memory capacity in bytes

◆ getHostName()

std::string wrench::S4U_Simulation::getHostName ( )

static

Get the hostname on which the calling actor is running.

Returns: the hostname as a string

◆ getHostNumCores()

unsigned int wrench::S4U_Simulation::getHostNumCores ( std::string hostname )

static

Get the number of cores of a host.

Parameters

hostname the name of the host

Returns: the number of cores of the host

Exceptions

std::invalid_argument

◆ getHostProperty()

std::string wrench::S4U_Simulation::getHostProperty	(	std::string	hostname,
		std::string	property_name
	)

static

Get the property associated to the host specified in the platform file.

Parameters

hostname	the host name
property_name	the property name

Returns: a string relating to the property specified in the platform file

◆ getLinkBandwidth()

double wrench::S4U_Simulation::getLinkBandwidth ( std::string name )

static

Get a link's bandwidth.

Parameters

name	the link's name

Returns: a bandwidth in Bps

◆ getLinkUsage()

double wrench::S4U_Simulation::getLinkUsage ( std::string name )

static

Get a link's bandwidth usage.

Parameters

name	the link's name

Returns: a bandwidth usage in Bps

◆ getListOfPstates()

std::vector< int > wrench::S4U_Simulation::getListOfPstates ( const std::string & hostname )

static

Get the list of power states available for a host.

Parameters

hostname the host name

Returns: a list of power states available for the host (as specified in the platform xml description file)

Exceptions

std::invalid_argument
std::runtime_error

◆ getMaxPowerConsumption()

double wrench::S4U_Simulation::getMaxPowerConsumption ( const std::string & hostname )

static

Get the maximum power consumption (i.e., 100% load) for a host at its current pstate.

Parameters

hostname the host name

Returns: The power consumption for this host if 100% used (as specified in the platform xml description file)

Exceptions

std::invalid_argument
std::runtime_error

◆ getMemoryCapacity()

double wrench::S4U_Simulation::getMemoryCapacity ( )

static

Get the memory capacity of the current host.

Returns: a memory capacity in bytes

◆ getMinPowerConsumption()

double wrench::S4U_Simulation::getMinPowerConsumption ( const std::string & hostname )

static

Get the minimum power consumption (i.e., idling) for a host at its current pstate.

Parameters

hostname the host name

Returns: The power consumption for this host if idle (as specified in the platform xml description file)

Exceptions

std::invalid_argument
std::runtime_error

◆ getNumberofPstates()

int wrench::S4U_Simulation::getNumberofPstates ( const std::string & hostname )

static

Get the total number of power states of a host.

Parameters

hostname the host name

Returns: The number of power states available for the host (as specified in the platform xml description file)

Exceptions

std::invalid_argument
std::runtime_error

◆ getNumCores()

unsigned int wrench::S4U_Simulation::getNumCores ( )

static

Get the number of cores of the current host.

Returns: a number of cores

◆ hostExists()

bool wrench::S4U_Simulation::hostExists ( std::string hostname )

static

Determines whether a host exists for a given hostname.

Parameters

hostname the name of the host

Returns: true or false

◆ hostHasMountPoint()

bool wrench::S4U_Simulation::hostHasMountPoint	(	std::string	hostname,
		std::string	mount_point
	)

static

Determines whether a mount point is defined at a host.

Parameters

hostname	the host's name
mount_point	the mount point

Returns: true if the host has a disk attached to the specified mount point, false otherwise

◆ initialize()

void wrench::S4U_Simulation::initialize	(	int *	argc,
		char **	argv
	)

Initialize the Simgrid simulation.

Parameters

argc	the C-style argument counts
argv	the C-style argument list

◆ isHostOn()

bool wrench::S4U_Simulation::isHostOn ( std::string hostname )

static

Returns whether a host is on or not.

Parameters

hostname the name of the host

Returns: true or false

Exceptions

std::invalid_argument

◆ isInitialized()

bool wrench::S4U_Simulation::isInitialized ( )

Returns true if S4U_Simulation::initialize() has been called successfully previously.

Returns: true or false

◆ isLinkOn()

bool wrench::S4U_Simulation::isLinkOn ( std::string linkname )

static

Returns whether a link is on or not.

Parameters

linkname the name of the link

Returns: true or false

Exceptions

std::invalid_argument

◆ isPlatformSetup()

bool wrench::S4U_Simulation::isPlatformSetup ( )

Returns true if S4U_Simulation::setupPlatform() has been called successfully previously.

Returns: true or false

◆ linkExists()

bool wrench::S4U_Simulation::linkExists ( std::string linkname )

static

Determines whether a link exists for a given linkname.

Parameters

linkname the name of the link

Returns: true or false

◆ readFromDisk()

void wrench::S4U_Simulation::readFromDisk	(	double	num_bytes,
		std::string	hostname,
		std::string	mount_point
	)

static

Simulates a disk read.

Parameters

num_bytes	number of bytes to read
hostname	name of host to which disk is attached
mount_point	mount point

◆ readFromDiskAndWriteToDiskConcurrently()

void wrench::S4U_Simulation::readFromDiskAndWriteToDiskConcurrently	(	double	num_bytes_to_read,
		double	num_bytes_to_write,
		std::string	hostname,
		std::string	read_mount_point,
		std::string	write_mount_point
	)

static

Read from a local disk and write to a local disk concurrently.

Parameters

num_bytes_to_read	number of bytes to read
num_bytes_to_write	number of bytes to write
hostname	the host at which the disks are located
read_mount_point	the mountpoint to read from
write_mount_point	the mountpoint to write to

◆ runSimulation()

void wrench::S4U_Simulation::runSimulation ( )

Start the simulation.

Exceptions

std::runtime_error

◆ setPstate()

void wrench::S4U_Simulation::setPstate	(	const std::string &	hostname,
		int	pstate
	)

static

Set the power state of the host.

Parameters

hostname	the host name
pstate	the power state index (the power state index is specified in the platform xml description file)

Exceptions

std::invalid_argument
std::runtime_error

◆ setupPlatform()

void wrench::S4U_Simulation::setupPlatform ( std::string & filename )

Initialize the simulated platform. Must only be called once.

Parameters

filename the path to an XML platform description file

Exceptions

void wrench::S4U_Simulation::writeToDisk	(	double	num_bytes,
		std::string	hostname,
		std::string	mount_point
	)

static

Simulates a disk write.

Parameters

num_bytes	number of bytes to write
hostname	name of host to which disk is attached
mount_point	mount point

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

S4U_Simulation.h
S4U_Simulation.cpp

Public Member Functions

Static Public Member Functions

Static Public Attributes

Detailed Description

Member Function Documentation

◆ compute()

◆ getAllHostnames()

◆ getAllHostnamesByCluster()

◆ getAllLinknames()

◆ getClock()

◆ getCurrentPstate()

◆ getDiskCapacity()

◆ getDisks()

◆ getEnergyConsumedByHost()

◆ getFlopRate()

◆ getHostFlopRate()

◆ getHostMemoryCapacity()

◆ getHostName()

◆ getHostNumCores()

◆ getHostProperty()

◆ getLinkBandwidth()

◆ getLinkUsage()

◆ getListOfPstates()

◆ getMaxPowerConsumption()

◆ getMemoryCapacity()

◆ getMinPowerConsumption()

◆ getNumberofPstates()

◆ getNumCores()

◆ hostExists()

◆ hostHasMountPoint()

◆ initialize()

◆ isHostOn()

◆ isInitialized()

◆ isLinkOn()

◆ isPlatformSetup()

◆ linkExists()

◆ readFromDisk()

◆ readFromDiskAndWriteToDiskConcurrently()

◆ runSimulation()

◆ setPstate()

◆ setupPlatform()

◆ sleep()

◆ turnOffHost()

◆ turnOffLink()

◆ turnOnHost()

◆ turnOnLink()

◆ writeToDisk()