Resource allocation

canary uses a ProcessPoolExecutor to execute tests asynchronously using N workers[1]. Tests are submitted to the executor such that the number of occupied slots of a resource remains less than or equal to the total number slots available. Resources across compute nodes are specified within a “resource pool” using a structured JSON format[2].

• The resource pool
• Defining the resource pool
• Defining resources required by a test case
• Environment variables

[1]

The number of workers can be set by the --workers=N canary run flag.

[2]

canary‘s resource pool specification is a generalization of ctest’s.