No Power Struggles

No Power Struggles - Ramya(UCSB Parthasarathy et al(HP Lo...

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No Power Struggles:Coordinated multi-level power management for the data center Ramya (UCSB), Parthasarathy et al (HP Labs)
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Overview Power delivery, consumption and cooling problems in a data center are being tackled currently by several systems that address “separate” aspects of these problems either locally/globally, in hardware/software. When these systems are deployed simultaneously, the policies of one tends to interfere with the others
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Overview… The lack of coordination amongst such systems leads to undesirable consequences. This paper proposes a “Global Power Management Solution” that coordinates these individual solutions.
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Classifying the existing power management solutions. . Approach used: localized/distributed resource management, VMs Power control : voltage scaling, power states, turning off machines Implementation scope: server/cluster/data center level Optimization requirements and constraints: accept performance loss?, allow power budget violation ?
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In a nutshell. . “Tracking” problem – optimize power consumption while delivering performance. “Capping” problem – Optimize power provisioning and cooling so as not to violate the power budget. “Optimization” problem – maximize power saving while minimizing performance loss. (ACPIs, VMs, etc)
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Representative Power Management Solutions Efficiency Controller (EC -tracking) – optimize per server avg. power consumption. Adjusts ACPI P- states based on past resource usage to manage “estimated” future demand. Server Manager (SM – capping) – Reduce P-state of a server on violation of Power budget.
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Representative solutions. . Enclosure Manager (EM ) – thermal power capping at blade level Group Manager (GM ) – at rack or data center level These two monitor power usage on sets of machines and re-provision power to maintain group power budget (determined manually or mandated by higher level power managers)
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. Virtual Machine Controller (VMC) –
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This note was uploaded on 12/27/2011 for the course CMPSC 290h taught by Professor Chong during the Fall '09 term at UCSB.

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No Power Struggles - Ramya(UCSB Parthasarathy et al(HP Lo...

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