wrench::BatchComputeService Class Reference

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

#include <BatchComputeService.h>

Inheritance diagram for wrench::BatchComputeService:

Public Member Functions
	BatchComputeService (const std::string &hostname, std::vector< std::string > compute_hosts, std::string scratch_space_mount_point, std::map< std::string, std::string > property_list={}, std::map< std::string, double > messagepayload_list={})
	Constructor. More...

Additional Inherited Members
Static Public Attributes inherited from wrench::ComputeService
static constexpr unsigned long	ALL_CORES = ULONG_MAX
	A convenient constant to mean "use all cores of a physical host" whenever a number of cores is needed when instantiating compute services.
static constexpr double	ALL_RAM = DBL_MAX
	A convenient constant to mean "use all ram of a physical host" whenever a ram capacity is needed when instantiating compute services.

Detailed Description

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

In the current implementation of this service, like for many of its real-world counterparts, memory partitioning among jobs onq the same host is not handled. When multiple jobs share hosts, which can happen when jobs require only a few cores per host and can thus be co-located on the same hosts in a non-exclusive fashion, each job simply runs as if it had access to the full RAM of each compute host it is scheduled on. The simulation of these memory contended scenarios is thus, for now, not realistic as there is no simulation of the effects of memory sharing (e.g., swapping).

Constructor & Destructor Documentation

BatchComputeService()

wrench::BatchComputeService::BatchComputeService	(	const std::string &	hostname,
		std::vector< std::string >	compute_hosts,
		std::string	scratch_space_mount_point,
		std::map< std::string, std::string >	property_list = {},
		std::map< std::string, double >	messagepayload_list = {}
	)

Constructor.

Parameters

hostname	the hostname on which to start the service
compute_hosts	the list of names of the available compute hosts the hosts must be homogeneous (speed, number of cores, and RAM size) all cores are usable by the batch service on each host all RAM is usable by the batch service on each host
scratch_space_mount_point	the mount point of the scratch storage space for the service ("" means "no scratch space")
property_list	a property list that specifies BatchComputeServiceProperty values ({} means "use all defaults")
messagepayload_list	a message payload list that specifies BatchComputeServiceMessagePayload values ({} means "use all defaults")

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

• BatchComputeService.h
• BatchComputeService.cpp