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Adaptive energy-management features of the IBM POWER7 chip

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12 Author(s)
Floyd, M. ; IBM Systems and Technology Group, Austin, TX, USA ; Ware, M. ; Rajamani, K. ; Gloekler, T.
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The IBM POWER7® processor implements several new adaptive power-management techniques that, in concert with the EnergyScale™ firmware, allow it to proactively take advantage of variations in workload, environmental conditions, and overall system utilization to meet customer-directed power and performance goals. These features build on the support and the capabilities provided by its predecessor, i.e., the IBM POWER6™ processor. Among these are per-core frequency scaling with available autonomous frequency controls, per-chip automated voltage slewing, power-consumption estimation, soft power capping, and hardware instrumentation assist.

Note: The Institute of Electrical and Electronics Engineers, Incorporated is distributing this Article with permission of the International Business Machines Corporation (IBM) who is the exclusive owner. The recipient of this Article may not assign, sublicense, lease, rent or otherwise transfer, reproduce, prepare derivative works, publicly display or perform, or distribute the Article.  

Published in:

IBM Journal of Research and Development  (Volume:55 ,  Issue: 3 )