, Volume 27, Issue 4, pp 255-263,
Open Access This content is freely available online to anyone, anywhere at any time.
Date: 31 Aug 2011

Determine energy-saving potential in wait-states of large-scale parallel programs


Energy consumption is one of the major topics in high performance computing (HPC) in the last years. However, little effort is put into energy analysis by developers of HPC applications.

We present our approach of combined performance and energy analysis using the performance analysis tool-set Scalasca. Scalascas parallel wait-state analysis is extended by a calculation of the energy-saving potential if a lower power-state can be used.

This project is funded by the BMBF (German federal ministery for education and science) under grant 01—H08008E within the call: “HPC-Software für skalierbare Parallelrechner”.