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Green Cloud Computing. Hadi Salimi Distributed Systems Lab, School of Computer Engineering, Iran University of Science and Technology, [email protected] Fall 2010. Vision and Potential of Cloud Computing. C omputer networks grow up and become sophisticated !

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Green Cloud Computing

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Green Cloud Computing

Hadi Salimi

Distributed Systems Lab,

School of Computer Engineering,

Iran University of Science and Technology,

[email protected]

Fall 2010

Green Cloud Computing


Vision and Potential of Cloud Computing

  • Computer networks grow up and become sophisticated !

  • Computing utilities based on a service provisioning model expected

  • Users can access applications as services from anywhere in the world on demand

Green Cloud Computing


Challenges of Cloud Infrastructure

  • On-demand resource provisioning in response to time-varying workloads

  • Data centers are expensive to maintain, High energy costs and huge carbon footprints

  • Lowering the energy usage of data centers is a complex issue

Green Cloud Computing


Challenges of Cloud Infrastructure(cont.)

  • Cloud resources need to be allocated not only to satisfy QoS, but also to reduce energy usage.

  • Rising energy cost is a potential threat as it increases the TCO & ROI of Cloud infrastructure setup by providers.

Green Cloud Computing


Cloud Infrastructure

Green Cloud Computing


Green Cloud Architectural Elements

  • a) Consumers/Brokers

  • b) Green Resource Allocator

    • Green Negotiator

    • Service Analyzer

    • Consumer Profiler

    • Pricing

    • Energy Monitor

    • Service Scheduler

    • VM Manager

    • Accounting

  • c) Virtual Machines

  • d) Physical Machines

  • Green Cloud Computing


    Energy-Aware Data Centre Resource Allocation

    • The problem of VM allocation can be divided in two parts

      • admission of new requests for VM

      • optimization of current allocation of VM

    • To solve it we apply modification of the Best Fit Decreasing algorithm

    • The complexity where is the number of VMs that have to be allocated and is the number of hosts

      • select VMs that need to be migrated

      • chosen VMs are placed on hosts

        • The first heuristic is Single Threshold

    Green Cloud Computing


    Open Challenges

    • Ability to transfer VMs between physical nodes using live migration

    • Minimal number of nodes according to current resource requirements

    • Performance degradation and, thus result in SLA violation

    Green Cloud Computing


    Energy-aware Dynamic Resource Allocation Challenge

    • Resized and consolidated

    • Provide high performance while meeting SLA

      • Excessive power cycling of a server could

      • Turning resources off in a dynamic environment

      • Ensuring SLA brings challenges

    Green Cloud Computing


    QoS-based Resource Selection and Provisioning Challenge

    • QoS-aware resource selection plays an important role in Cloud computing

    • explore the trade-offs between QoS and energy saving

    Green Cloud Computing


    Optimization of Virtual Network Topologies Challenge

    • Communicating VMs may costly data transfer between physical nodes

    • To observe the communication between VMs and place them on the same or closely located nodes

    Green Cloud Computing


    Autonomic Optimization of Thermal states and Cooling System Operation Challenge

    • High temperature leads to a reduced system reliability and availability, decreased lifetime of devices

      • Leverages the temperature variations between different workloads

      • Hardware level thermal management techniques

    Green Cloud Computing


    Efficient Consolidation of VMs for Managing Heterogeneous Workloads Challenge

    • Different types of applications can be allocated on one physical computer node

    • What kind of applications can be allocated to a single host that efficient usage of the resources.

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    Concluding

    • Cloud computing plays a significant role in the reduction of data center energy consumption costs

    • Consumers are increasingly becoming conscious about the environment

    Green Cloud Computing


    References

    • RajkumarBuyya, et al. "Energy-Efficient Management of Data Center Resources for Cloud Computing: A Vision, Architectural Elements, and Open Challenges."

    Green Cloud Computing


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