IBM PowerNV Score-P Plugin

This plugin tracks the power consumption of a Power 9-system.

Usage

Environment Variables

Async Plugin

• SCOREP_METRIC_PLUGINS=ibmpowernv_plugin
• SCOREP_METRIC_IBMPOWERNV_PLUGIN (required) * (for all) OR comma-separated list of metrics to collect. See here for available metrics.
• SCOREP_METRIC_IBMPOWERNV_PLUGIN_INTERVAL (optional, default: 10ms, case sensitive) Interval of testing. The value is a duration string which will be parsed, e.g. 100ms.
• SCOREP_METRIC_IBMPOWERNV_PLUGIN_SOCKETS (optional, default: 2) Number of sockets to create sensors for. Must be at least 1.

Strict-Sync Plugin

• SCOREP_METRIC_PLUGINS=ibmpowernv_sync_plugin
• SCOREP_METRIC_IBMPOWERNV_SYNC_PLUGIN (required) * adds all metrics. (any other value is forbidden)
• SCOREP_METRIC_IBMPOWERNV_PLUGIN_INTERVAL (optional, default: 10ms, case sensitive) minimal intervall beteween two measurments. If the distance between two events is shorter, the same value might be reported. The value is a duration string which will be parsed, e.g. 100ms.
• SCOREP_METRIC_IBMPOWERNV_PLUGIN_SOCKETS (optional, default: 2) Number of sockets to create sensors for. Must be at least 1.

Testing

For testing grab a sample occ inband sensors file and set the environment variable SCOREP_METRIC_IBMPOWERNV_PLUGIN_OCC_FILENAME to its location. Provided your built libibmpowernv_plugin.so is in the current directory and you have lo2s installed, use this to generate a sample test trace:

LD_LIBRARY_PATH=.:$LD_LIBRARY_PATH SCOREP_METRIC_PLUGINS=ibmpowernv_plugin SCOREP_METRIC_IBMPOWERNV_PLUGIN='*' SCOREP_METRIC_IBMPOWERNV_PLUGIN_OCC_FILENAME=./occ_inband_sensors_20210301T090454Z SCOREP_METRIC_IBMPOWERNV_PLUGIN_INTERVAL="0.1s"  lo2s -v -- sleep 1

(expected: occ_power_system always reads 471 W, occ_power_system_acc always 5415690.465 J)

Acknowledgements

Copied structure of the source from the meminfo Score-P plugin.

Copied and adjusted code to read the sensors from Variorum, which in turn is originally from here.

Used function for time parsing from metricq.