Workload

Workloads define what tasks in the simulation, when they were submitted, and their computational requirements. Workload are defined using two files:

• Tasks: The Tasks file contains the metadata of the tasks
• Fragments: The Fragments file contains the computational demand of each task over time

Both files are provided using the parquet format.

Tasks

The Tasks file provides an overview of the tasks:

Metric	Required?	Datatype	Unit	Summary
id	Yes	string		The id of the server
submission_time	Yes	int64	datetime	The submission time of the server
nature	No	string	[deferrable, non-deferrable]	Defines if a task can be delayed
deadline	No	string	datetime	The latest the scheduling of a task can be delayed to.
duration	Yes	int64	datetime	The finish time of the submission
cpu_count	Yes	int32	count	The number of CPUs required to run this task
cpu_capacity	Yes	float64	MHz	The amount of CPU required to run this task
mem_capacity	Yes	int64	MB	The amount of memory required to run this task

Fragments

The Fragments file provides information about the computational demand of each task over time:

Metric	Required?	Datatype	Unit	Summary
id	Yes	string		The id of the task
duration	Yes	int64	milli seconds	The duration since the last sample
cpu_count	Yes	int32	count	The number of cpus required
cpu_usage	Yes	float64	MHz	The amount of computational power required.