Requirements

CPU power measurement requires an Intel CPU with RAPL support, for example Sandy Bridge or newer, and the intel_rapl powercap kernel module to be loaded.

Node power monitoring is implemented through the Cray HSS energy counters.

The Cray HSS energy counters are known to be available on Cray XK6 and XC30 machines.

NVIDIA GPU power measurement requires an NVIDIA GPU that supports power monitoring. This can be checked on the command-line with nvidia-smi -q -d power. If the reported power values are reported as “N/A”, power monitoring is not supported.