dragon.native.machine

The Dragon native machine interface provides hardware related functionality.

These calls return various hardware properties of the system(s), like the number of processors or a list of all nodes.

Functions

`cpu_count`()	Return the number of CPUs in this system.
`current`()	Return a node object for this process.

Classes

`Node`
`System`

cpu_count() → int

Return the number of CPUs in this system.

Returns:: integer representing the number of cpus

class Node

Bases: object

__init__(ident: str)

A class abstracting the current hardware node.

Parameters:: ident (str or int) – name or h_uid of the node to request.

property name: str

Return the Dragon name of this node. Use Node.hostname for the hostname.

Returns:: The name of the node
Return type:: str

property h_uid: int

The unique global identifier of this node.

Returns:: the h_uid
Return type:: in

property ip: str

Return the IPv4 address of this node

Returns:: The addres
Return type:: str

property num_cpus: int

Return the number of CPUs of this node.

Returns:: The number of CPUs
Return type:: int

property num_gpus: int

Return a the number of GPUs on this node

Returns:: The number of GPUs
Return type:: list[int]

property physical_mem: int

Return the physical memory of this node.

Returns:: Physical memory in bytes
Return type:: int

property gpus: list[int]

Return a list of GPU visible devices on this node

Returns:: list of GPU visible devices
Return type:: list[int]

property gpu_vendor: str

Return the name of the GPU Vendor on this node

Returns:: GPU vendor name
Return type:: str

property cpus: list[int]

Return the CPUs available on this node

Returns:: list of CPUs
Return type:: list[int]

property hostname: str

Host name of the node in the network.

This is not the Dragon internal name (Node.name) for this node.

Returns:: The hostname
Return type:: str

current() → Node

Return a node object for this process.

Returns:: Node object
Return type:: Node

class System

Bases: object

__init__(): A stub of a system abstraction

property nodes

property nnodes: int