INTRODUCTION AND PURPOSE:
This article endeavors to provide a single point of reference to Power Management blogs, articles and other resources relevant to the Intel® Xeon Phi™ coprocessor.
Unlike a lot of previous recent blogs, this series is about power management in general. At the very end of the series, I’ll write specifically about the Intel® Xeon Phi™ coprocessor.
I have talked incessantly over the years about power states (e.g. P-states and C-states), and how the processor transitions from one state to another. For a list of previous blogs in this series, and well as other related blogs on power and power management, see the article at [List0]. But I have left out an important component of power management, namely the policy.
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(For a PDF version of this article, download the attachment.)
At SC13 (Super Computing 2013)*, someone commented that Intel seems to have some super-secret set of tricks in its pocket, allowing us to optimize “far beyond those of mortal man”+. We don’t really have any super-secret tricks. Even if we did, we wouldn’t use them. We want mortal man (you) to be able to reproduce whatever we do. It is also in our business interest to insure that you can optimize on Intel hardware to the fullest extent possible.