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  • Interface: Server attribute: SVR_ATR_power_ramp_rate_enable
    • Change Control: Stable
    • Synopsis: power_ramp_rate_enable
    • Details: Server attribute. When set to True, PBS can use power ramp rate limiting feature for Cray. 
      • Setting this attribute will also enables attributes  SVR_ATR_node_idle_time. 
      • Once set, un-setting SVR_ATR_power_ramp_rate_enable attribute will not unset SVR_ATR_node_idle_time.
      • Format: Boolean 
      • Default: unset
      • Manager has read and write permission and others have read permission.
  • Interface: New server attribute: SVR_ATR_node_idle_time
    • Visibility: Public
    • Change Control: Stable
    • Synopsis: node_idle_time
    • Details: This new server attribute will define the minimum idle time for nodes to be considered for powering off.
      • Enabled when server attribute power_ramp_rate_enable is set.
      • The default value is set to 1800 seconds.
      • Manager and Operator has set permission. All have read permission.
      • To modify the default value use qmgr:
          • qmgr -c "set server node_idle_time = <new_value>"
        • <new_value> is the time in seconds and should be a non zero positive number.
  • Interface: New node attribute: ND_ATR_power_ramp_rate_enable
    • Visibility: Public
    • Change Control: Stable
    • Synopsis: power_ramp_rate_enable
    • Details: This new node attribute will control if a node can be allowed to ramp rate limiting.
    • The default value is False.
    • Manager has set permission. All have read permission.
    • To modify the default value use qmgr:
      • qmgr -c "set node <node_name> power_ramp_rate_enable-=True"
  • Interface: New node attribute: ND_ATR_last_busy_time
    • Visibility: Public
    • Change Control: Stable
    • Synopsis: last_busy_time
    • Details: This new node attribute will be updated with time stamp at the end of job or reservation.
      • Attribute will be reset when node is powered on.
      • Managers and Operators have read permission.
  • Interface: New node state: ramping-up
    • Visibility: Public
    • Change Control: Stable
    • Synopsis: ramping-up
    • Details: This new node state will be set when nodes are being ramped-up by PBS via power ramp rate limiting.
  • Interface: New node state: ramping-down
    • Visibility: Public
    • Change Control: Stable
    • Synopsis: ramping-down
    • Details: This new node state will be set when nodes are being ramped down by PBS via power ramp rate limiting.
  • Interface: New node state: sleeping
    • Visibility: Public
    • Change Control: Stable
    • Synopsis: sleeping
    • Details: This new node state will be set when nodes are ramped down by PBS via power ramp rate limiting. Scheduler will be able to schedule jobs and reservations on these nodes with sleeping state if node has been ramped down for at least min_power_down_delay. If selected by the scheduler, server will power these nodes up when required to run jobs or reservations.
  • Interface: New server hook rampup
    • Visibility: Public
    • Change Control: Stable
    • Synopsis: rampup server hook
    • Details: This is a new server pbshook enabled when server attribute power_ramp_rate_enable is set to True. This hook takes list of vnodes to ramp up. This hook interfaces with vendor power api's through generic PMI interface to power on nodes.
  • Interface: New server hook poweroff
    • Visibility: Public
    • Change Control: Stable
    • Synopsis: poweroff server hook
    • Details: This is a new server pbshook enabled when server attribute power_provisioning is set to True. This hook takes list of vnodes to power off. This hook interfaces with vendor power api's through generic PMI interface to power off nodes.
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