GPGPU-WG KnowledgeBase GLUE2 Profile ExecutionEnvironment
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.
ExecutionEnvironment | ||||
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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. | |
UsedInstances | UInt32 | 0..1 | The number of Execution Environment instances which are considered to be fully used; an instance is used when, according to the policies of the Computing Manager (i.e., LRMS), it cannot accept new jobs because it already runs the maximum number of allowed jobs. | |
UnavailableInstances | UInt32 | 0..1 | The number of Execution Environment instances which are currently unavailable, e.g. because of failures or maintenance. | |
PhysicalCPUs | UInt32 | 0..1 | The number of physical CPUs in one ExecutionEnvironment instance, i.e. the number of sockets per Worker Node. | |
LogicalCPUs | UInt32 | 0..1 | The number of logical CPUs in one ExecutionEnvironment instance, i.e. typically the number of cores per Worker Node. | |
CPUMultiplicity | CPUMultiplicity_t | 0..1 | Condensed information about the multiplicity of both physical CPUs and cores available in an execution environment instance.. | |
CPUVendor | String | 0..1 | The name of the physical CPU vendor. Free format, but it SHOULD correspond to the name by which the vendor is generally known. | |
CPUModel | String | 0..1 | The name of the physical CPU model, as defined by the vendor. | |
CPUVersion | String | 0..1 | The specific version of the Physical CPU model, as defined by the vendor | |
CPUClockSpeed | UInt32 | 0..1 | MHz | The nominal clock speed of the physical CPU. |
CPUTimeScalingFactor | Real32 | 0..1 | ||
WallTimeScalingFactor | Real32 | 0..1 | ||
MainMemorySize | UInt64 | 1 | MB | |
VirtualMemorySize | UInt64 | 0..1 | MB | |
OSFamily | OSFamily_t | 1 | ||
OSName | OSName_t | 0..1 | ||
OSVersion | String | 0..1 | ||
ConnectivityIn | ExtendedBoolean_t | 1 | ||
ConnectivityOut | ExtendedBoolean_t | 1 | ||
NetworkInfo | NetworkInfo_t | * | ||
Association End | Mult. | Description | ||
ExecutionEnvironment.ID | * | An application environment MAY be used in zero or more execution environments | ||
ComputingManager.ID | 1 | An application environment is part of a computing manager. | ||
ApplicationHandle.ID | * | An application environment MAY be handled via zero or more application handles. | ||
Inherited Association End | Mult. | Description | ||
Extension.Key | * | The entity MAY be extended via key-value pairs |