Classes
class	AmdahlParallelModel
	A class that defines an Amdahl's Law-based parallel task performance model. More...

class	BandwidthMeterService
	A service that measures and records bandwidth usage on a set of links at regular time intervals. More...

class	BareMetalComputeService
	A compute service that manages a set of multi-core compute hosts and provides access to their resources. More...

class	BareMetalComputeServiceMessagePayload
	Configurable message payloads for a MultiHostMulticoreComputeService. More...

class	BareMetalComputeServiceProperty
	Configurable properties for a bare_metal. More...

class	BatchComputeService
	A batch-scheduled compute service that manages a set of compute hosts and controls access to their resource via a batch queue. More...

class	BatchComputeServiceMessagePayload
	Configurable message payloads for a batch. More...

class	BatchComputeServiceProperty
	Configurable properties for a BatchComputeService. More...

class	CloudComputeService
	A cloud-based compute service that manages a set of physical hosts and controls access to their resources by (transparently) executing jobs in VM instances. More...

class	CloudComputeServiceMessagePayload
	Configurable message payloads for a CloudService. More...

class	CloudComputeServiceProperty
	Configurable properties for a CloudComputeService. More...

class	ComputeService
	The compute service base class. More...

class	ComputeServiceMessagePayload
	Configurable message payloads for a ComputeService. More...

class	ComputeServiceProperty
	Configurable properties for a ComputeService. More...

class	ComputeThreadHasDied
	A "compute thread has died" failure cause. More...

class	ConstantEfficiencyParallelModel
	A class the implemens a constant-efficiency parallel task performance model. More...

class	CustomParallelModel
	A class that defines a custom parallel task performance model. More...

class	DataMovementManager
	A helper daemon (co-located with a WMS) that handles data movement operations. More...

class	DynamicOptimization
	An abstract class that serves as a base class for implementing dynamic (i.e., at runtime) optimizations to be used by a WMS while executing a Workflow. More...

class	EnergyMeterService
	A service that measures and records energy consumption on a set of hosts at regular time intervals. More...

class	FailureCause
	A top-level class to describe all simulation-valid failures that can occur during workflow execution (and should/could be handled by a WMS) More...

class	FatalFailure
	An "Unknown" failure cause (should not happen) More...

class	FileAlreadyBeingCopied
	A "file is already being copied" failure cause. More...

class	FileCopyCompletedEvent
	A "file copy has completed" WorkflowExecutionEvent. More...

class	FileCopyFailedEvent
	A "file copy has failed" WorkflowExecutionEvent. More...

class	FileLocation
	A class that encodes a file location. More...

class	FileNotFound
	A "file was not found" failure cause. More...

class	FileRegistryService
	A file registry service (a.k.a. replica catalog) that holds a database of which files are available at which storage services. Specifically, the database holds a set of <file, storage service> entries. A WMS can add, lookup, and remove entries at will from this database. More...

class	FileRegistryServiceMessagePayload
	Configurable message payload for a FileRegistryService. More...

class	FileRegistryServiceProperty
	Configurable properties for a FileRegistryService. More...

class	FunctionalityNotAvailable
	A "requested functionality is not available on that service" failure cause. More...

class	HostError
	A "host error" failure cause (e.g., attempted to start a daemon on a host that is off) More...

class	HTCondorComputeService
	A workload management framework compute service. More...

class	HTCondorComputeServiceMessagePayload
	Configurable message payloads for an htcondor. More...

class	HTCondorComputeServiceProperty
	Properties for an HTCondor service. More...

class	InvalidDirectoryPath
	A "unknown mount point storage service" failure cause. More...

class	JobKilled
	A "job has been killed" failure cause. More...

class	JobManager
	A helper daemon (co-located with and explicitly started by a WMS), which is used to handle all job executions. More...

class	JobTimeout
	A "job has timed out" failure cause. More...

class	JobTypeNotSupported
	A "compute service does not support requested job type" failure cause. More...

class	NetworkError
	A "network error (or endpoint is down)" failure cause. More...

class	NetworkProximityService
	A network proximity service that continuously estimates inter-host latencies and can be queried for such estimates. More...

class	NetworkProximityServiceMessagePayload
	Configurable message payloads for a NetworkProximityService. More...

class	NetworkProximityServiceProperty
	Configurable properties for a NetworkProximityService. More...

class	NoScratchSpace
	A "no scratch space" failure cause. More...

class	NotAllowed
	A "operation not allowed" failure cause. More...

class	NotEnoughResources
	A "compute service doesn't have enough cores" failure cause. More...

class	ParallelModel
	A virtual class (with convenient static methods) to define parallel task performance models. More...

class	PegasusWorkflowParser
	A class that implement methods to read workflow files provided by the Pegasus project. More...

class	PilotJob
	A pilot (i.e., non-standard) workflow job that can be submitted to a ComputeService by a WMS (via a JobManager) More...

class	PilotJobExpiredEvent
	A "pilot job has expired" WorkflowExecutionEvent. More...

class	PilotJobScheduler
	A (mostly virtual) base class for implementing PilotJob scheduling algorithms to be used by a WMS. More...

class	PilotJobStartedEvent
	A "pilot job has started" WorkflowExecutionEvent. More...

class	Service
	A service that can be added to the simulation and that can be used by a WMS when executing a workflow. More...

class	ServiceIsDown
	A "service is down" failure cause. More...

class	ServiceIsSuspended
	A "service is suspended" failure cause. More...

class	ServiceMessagePayload
	Configurable message payloads for a Service. More...

class	ServiceProperty
	Configurable properties for a Service. More...

class	SimpleStorageService
	A storage service that provides direct access to some storage resources (e.g., one or more disks). An important (configurable) property of the storage service is SimpleStorageServiceProperty::BUFFER_SIZE (see documentation thereof), which defines the buffer size that the storage service uses. Specifically, when the storage service receives/sends data from/to the network, it does so in a loop over data "chunks", with pipelined network and disk I/O operations. The smaller the buffer size the more "fluid" the model, but the more time-consuming the simulation. A large buffer size, however, may lead to less realistic simulations. At the extreme, an infinite buffer size would correspond to fully sequential executions (first a network receive/send, and then a disk write/read). Setting the buffer size to "0" corresponds to a fully fluid model in which individual data chunk operations are not simulated, thus achieving both accuracy (unless one specifically wishes to study the effects of buffering) and quick simulation times. For now, setting the buffer size to "0" is not implemented. The default buffer size is 10 MiB (note that the user can always declare a disk with arbitrary bandwidth in the platform description XML). More...

class	SimpleStorageServiceMessagePayload
	Configurable message payloads for a SimpleStorageService. More...

class	SimpleStorageServiceProperty
	Configurable properties for a SimpleStorageService. More...

class	Simulation
	A class that provides basic simulation methods. Once the simulation object has been explicitly or implicitly destroyed, then any call to the WRENCH APIs has undefied behavior (due to memory_manager_service being de-allocated). More...

class	SimulationOutput
	A class that contains post-mortem simulation-generated data. More...

class	SimulationTimestamp
	A time-stamped simulation event stored in SimulationOutput. More...

class	SimulationTimestampDiskRead
	A base class for simulation timestamps regarding disk reads. More...

class	SimulationTimestampDiskReadCompletion
	A simulation timestamp class for disk read completions. More...

class	SimulationTimestampDiskReadFailure
	A simulation timestamp class for disk read failure times. More...

class	SimulationTimestampDiskReadStart
	A simulation timestamp class for disk read start times. More...

class	SimulationTimestampDiskWrite
	A base class for simulation timestamps regarding disk writes. More...

class	SimulationTimestampDiskWriteCompletion
	A simulation timestamp class for disk write completions. More...

class	SimulationTimestampDiskWriteFailure
	A simulation timestamp class for disk write failure times. More...

class	SimulationTimestampDiskWriteStart
	A simulation timestamp class for disk write start times. More...

class	SimulationTimestampEnergyConsumption
	A simulation timestamp class for energy consumption. More...

class	SimulationTimestampFileCopy
	A base class for simulation timestamps regarding file copies. More...

class	SimulationTimestampFileCopyCompletion
	A simulation timestamp class for file copy completions. More...

class	SimulationTimestampFileCopyFailure
	A simulation timestamp class for file copy failure times. More...

class	SimulationTimestampFileCopyStart
	A simulation timestamp class for file copy start times. More...

class	SimulationTimestampFileRead
	A base class for simulation timestamps regarding file reads. More...

class	SimulationTimestampFileReadCompletion
	A simulation timestamp class for file read completions. More...

class	SimulationTimestampFileReadFailure
	A simulation timestamp class for file read failure times. More...

class	SimulationTimestampFileReadStart
	A simulation timestamp class for file read start times. More...

class	SimulationTimestampFileWrite
	A base class for simulation timestamps regarding file writes. More...

class	SimulationTimestampFileWriteCompletion
	A simulation timestamp class for file write completions. More...

class	SimulationTimestampFileWriteFailure
	A simulation timestamp class for file write failure times. More...

class	SimulationTimestampFileWriteStart
	A simulation timestamp class for file write start times. More...

class	SimulationTimestampLinkUsage
	A simulation timestamp class for link usage. More...

class	SimulationTimestampPair
	A base class for simulation timestamps. More...

class	SimulationTimestampPstateSet
	A simulation timestamp class for changes in a host's pstate. More...

class	SimulationTimestampTask
	A base class for simulation timestamps regarding workflow tasks. More...

class	SimulationTimestampTaskCompletion
	A simulation timestamp class for WorkflowTask completion times. More...

class	SimulationTimestampTaskFailure
	A simulation timestamp class for WorkflowTask failure times. More...

class	SimulationTimestampTaskStart
	A simulation timestamp class for WorkflowTask start times. More...

class	SimulationTimestampTaskTermination
	A simulation timestamp class for WorkflowTask termination times. More...

class	SimulationTimestampType
	File, Source, Whoami used to be hashed as key for unordered multimap for ongoing file operations. More...

class	StandardJobCompletedEvent
	A "standard job has completed" WorkflowExecutionEvent. More...

class	StandardJobFailedEvent
	A "standard job has failed" WorkflowExecutionEvent. More...

class	StandardJobScheduler
	A (mostly virtual) base class for implementing StandardJob scheduling algorithms to be used by a WMS. More...

class	StaticOptimization
	An abstract class that serves as a base class for implementing static (i.e., before workflow execution) optimizations to be used by a WMS. More...

class	StorageService
	The storage service base class. More...

class	StorageServiceMessagePayload
	Configurable message payloads for a StorageService. More...

class	StorageServiceNotEnoughSpace
	A "not enough space on storage service" failure cause. More...

class	StorageServiceProperty
	Configurable properties for a StorageService. More...

class	TerminalOutput
	Color-enabling wrappers around Simgrid's XBT_INFO, XBT_DEBUG, XBT_WARN logging macros. More...

class	TimerEvent
	A "timer went off" WorkflowExecutionEvent. More...

class	VirtualizedClusterComputeService
	A virtualized cluster-based compute service. More...

class	VirtualizedClusterComputeServiceMessagePayload
	Configurable message payloads for a VirtualizedClusterComputeService. More...

class	VirtualizedClusterComputeServiceProperty
	Configurable properties for a VirtualizedClusterComputeService. More...

class	WMS
	A workflow management system (WMS) More...

class	Workflow
	A workflow (to be executed by a WMS) More...

class	WorkflowExecutionEvent
	A class to represent the various execution events that are relevant to the execution of a workflow. More...

class	WorkflowExecutionException
	An generic exception that is thrown whenever something unexpected (but simulation-valid) occurs during the simulated execution of a WMS. More...

class	WorkflowFile
	A data file used/produced by a WorkflowTask in a Workflow. More...

class	WorkflowJob
	Abstraction of a job used for executing tasks in a Workflow. More...

class	WorkflowTask
	A computational task in a Workflow. More...

Functions
bool	compare_last_access (Block blk1, Block blk2)
	Helper function to compare block by last access. More...

void	generateHostUtilizationGraphLayout (std::vector< WorkflowTaskExecutionInstance > &data)
	Generates graph layout for host utilization and adds that information to the JSON object. More...

std::string	generateRandomUsername (unsigned long userid)
	A method to generate a random username, so that generated workload traces look more realistic. More...

bool	isPointOnSegment (std::pair< unsigned long long, unsigned long long > segment, unsigned long long point)
	Determines if a point lies on a line segment. More...

bool	isSegmentOverlappingXAxis (std::pair< unsigned long long, unsigned long long > segment1, std::pair< unsigned long long, unsigned long long > segment2)
	Determines if two line segments overlap along the x-axis and allows for a slight overlap. More...

bool	isSegmentOverlappingYAxis (std::pair< unsigned long long, unsigned long long > segment1, std::pair< unsigned long long, unsigned long long > segment2)
	Determines if two line segments overlap along the y-axis using exact values. More...

bool	operator== (const BatchJobSet &left, const BatchJobSet &right)
	Overloaded operator. More...

bool	operator== (const BatchJobSetCoreLevel &left, const BatchJobSetCoreLevel &right)
	Overloaded operator. More...

static std::tuple< std::string, unsigned long >	parseResourceSpec (const std::string &spec)
	Helper static method to parse resource specifications to the <cores,ram> format. More...

void	processUnknownJobTermination (std::string job_id)
	No-op method. More...

bool	searchForLayout (std::vector< WorkflowTaskExecutionInstance > &data, std::size_t index)
	Searches for a possible host utilization gantt chart layout and updates the data to include what vertical position to plot each rectangle. More...

void	to_json (nlohmann::json &j, const WorkflowTaskExecutionInstance &w)
	Function called by the nlohmann::json constructor when a WorkflowTaskExecutionInstance is passed in as a parameter. This returns the JSON representation of a WorkflowTaskExecutionInstance. The name of this function is important and should not be changed as it is what nlohmann expects (hardcoded in there). More...

Detailed Description

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

Function Documentation

◆ compare_last_access()

bool wrench::compare_last_access	(	Block *	blk1,
		Block *	blk2
	)

Helper function to compare block by last access.

Parameters

blk1	: a block
blk2	: another block

Returns: true if blk1 was accessed before blk2, false otherwise

◆ generateHostUtilizationGraphLayout()

void wrench::generateHostUtilizationGraphLayout ( std::vector< WorkflowTaskExecutionInstance > & data )

Generates graph layout for host utilization and adds that information to the JSON object.

Searches for a possible gantt chart layout to represent host utilization. If a layout is found (no tasks overlap), then information about where to plot what is added to the JSON object. Note that this is a possible layout and does not reflect what task ran on what core specifically. For example, we may hav a task that was allocated 2-cores on a idle 4-core host. The task, when plotted on the gantt chart may end up in 1 of 3 positions (using cores 0 and 1, 1 and 2, or 2 and 3).

Parameters

data	JSON workflow execution data

Exceptions

std::runtime_error

◆ generateRandomUsername()

std::string wrench::generateRandomUsername ( unsigned long userid )

A method to generate a random username, so that generated workload traces look more realistic.

Parameters

userid numerical userid

Returns: a generated alpha userid

◆ isPointOnSegment()

bool wrench::isPointOnSegment	(	std::pair< unsigned long long, unsigned long long >	segment,
		unsigned long long	point
	)

Determines if a point lies on a line segment.

Parameters

segment	pair of start and end points that make up the line segment
point	point on a 1D plane

Returns: bool

◆ isSegmentOverlappingXAxis()

bool wrench::isSegmentOverlappingXAxis	(	std::pair< unsigned long long, unsigned long long >	segment1,
		std::pair< unsigned long long, unsigned long long >	segment2
	)

Determines if two line segments overlap along the x-axis and allows for a slight overlap.

Parameters

segment1	first segment
segment2	second segment

Returns: bool

◆ isSegmentOverlappingYAxis()

bool wrench::isSegmentOverlappingYAxis	(	std::pair< unsigned long long, unsigned long long >	segment1,
		std::pair< unsigned long long, unsigned long long >	segment2
	)

Determines if two line segments overlap along the y-axis using exact values.

Parameters

segment1	first segment
segment2	second segment

Returns: bool

◆ operator==() [1/2]

bool wrench::operator==	(	const BatchJobSet &	left,
		const BatchJobSet &	right
	)

Overloaded operator.

Parameters

left	left-hand side
right	right-hand side

Returns

◆ operator==() [2/2]

bool wrench::operator==	(	const BatchJobSetCoreLevel &	left,
		const BatchJobSetCoreLevel &	right
	)

Overloaded operator.

Parameters

left	left-hand side
right	right-hand side

Returns

◆ parseResourceSpec()

static std::tuple<std::string, unsigned long> wrench::parseResourceSpec ( const std::string & spec )

static

Helper static method to parse resource specifications to the <cores,ram> format.

Parameters

spec	specification string

Returns: a <cores, ram> tuple

Exceptions

std::invalid_argument

◆ processUnknownJobTermination()

void wrench::BatschedBatchScheduler::processUnknownJobTermination ( std::string job_id )

No-op method.

Parameters

job_id a batch job id

◆ searchForLayout()

bool wrench::searchForLayout	(	std::vector< WorkflowTaskExecutionInstance > &	data,
		std::size_t	index
	)

Searches for a possible host utilization gantt chart layout and updates the data to include what vertical position to plot each rectangle.

Recursive backtracking search for a valid gantt chart layout. This algorithm looks for a vertical position to place each task execution event such that it doesn't overlap with any other task.

Parameters

data	JSON workflow execution data
index	the index of the workflow execution data up to where we would like to check for a valid layout

Returns: bool

◆ to_json()

void wrench::to_json	(	nlohmann::json &	j,
		const WorkflowTaskExecutionInstance &	w
	)

Function called by the nlohmann::json constructor when a WorkflowTaskExecutionInstance is passed in as a parameter. This returns the JSON representation of a WorkflowTaskExecutionInstance. The name of this function is important and should not be changed as it is what nlohmann expects (hardcoded in there).

Parameters

j	reference to a JSON object
w	reference to a WorkflowTaskExecutionInstance

Classes

Functions

Detailed Description

Function Documentation

◆ compare_last_access()

◆ generateHostUtilizationGraphLayout()

◆ generateRandomUsername()

◆ isPointOnSegment()

◆ isSegmentOverlappingXAxis()

◆ isSegmentOverlappingYAxis()

◆ operator==() [1/2]

◆ operator==() [2/2]

◆ parseResourceSpec()

◆ processUnknownJobTermination()

◆ searchForLayout()

◆ to_json()