GreenDIRAC

GreenDIRAC is a DIRAC extension built for the GreenDIGIT Project. It enriches DIRAC workload management with sustainability data—power usage effectiveness (PUE) and carbon intensity (CI)—so scheduling and reporting tools can account for the environmental cost of running jobs.

What GreenDIRAC adds

• Registers itself as a DIRAC extension so the agents and configuration entries are available alongside standard DIRAC deployments.
• Uses the collected metrics to prefer greener queues when dispatching jobs and to record energy/emissions for completed workloads.

Core agents

• Green-aware Site Director – augments queue information with PUE, CI and then computes a green score that ranks queues from greenest to least green before scheduling.
• GreenReportingAgent – collects finished job records, queries CIM/CI services for sustainability data, computes energy/emissions figures, and persists the metrics to DIRAC databases and ElasticSearch when enabled.

Local CIM configuration

CIMClient reads credentials and API endpoints from: src/GreenDIRAC/WorkloadManagementSystem/Client/cim.conf

Required sections and keys:

• [CIM]: EMAIL, PASSWORD, API_BASE, METRICS_URL
• [KPI]: API_BASE
• [Defaults]: PUE, CI, ENERGY_WH
• [Runtime]: TOKEN_MAX_AGE_H, CACHE_TTL, TOKEN_TIMEOUT_S, PUE_TIMEOUT_S, CI_TIMEOUT_S, SUBMIT_TIMEOUT_S

If cim.conf is missing, CIMClient fails at startup with RuntimeError("CIMClient config file not found: ...").