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GPGPU-WG KnowledgeBase GLUE2 Profile ExecutionEnvironment

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The ExecutionEnvironment class describes the hardware and operating system environment in which a job will run. It represents a set of homogeneous Worker Nodes, so if a computing system contains nodes with significantly different properties there MAY be several ExecutionEnvironment instances. This implies that it should be possible to request a specific environment when a job is submitted. The ExecutionEnvironment MAY refer to virtual rather than physical machines.

As well as attributes describing a typical node, the class gives summary information about the size and usage of the set of nodes which posess those properties. However, there is no way to relate these to the information in other entities, e.g. it is not possible to know which jobs in a given ComputingShare are running on which ExecutionEnvironment.


Entity Inherits from Description
ExecutionEnvironment Resource A type of environment available to and requestable by a Grid job when submitted to a

ComputingService via a Computing Endpoint; the type of environment is described in terms of hardware, operating system and network characteristics. Information about the total/available/used instances of this type of execution environment are also included.

Inherited Attribute Type Mult Unit Description
Creation Time DateTime_t 0..1 Timestamp describing when the entity instance was created
Validity Unit64 0..1 s The duration after CreationTime that the information presented in the Entity SHOULD be considered relevant. After that period has elapsed, the information SHOULD NOT be consideredrelevant
ID [key] URI 1 A global unique ID
Name String 0..1 Human Readable name
OtherInfo String * Placeholder to publish info that does not fit in any other attribute. Free-form string, comma-separated tags, (name, value ) pair are all examples of valid syntax.
Attribute Type Mult Unit Description
Platform Platform_t 1 The platform of this Execution Environment.
VirtualMachine ExtendedBoolean_t 0..1 True if the Execution Environment is hosted within a virtual machine; in this case, the values of the other attributes are related to the virtualized environment and not to the hosting environment.
TotalInstances UInt32 0..1 The total number of Execution Environment instances. This SHOULD reflect the total installed capacity, i.e. including resources which are temporarily unavailable.