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Cluster Management

Cluster Management. An Administrator’s Viewpoint CS 6260 Jason Eric Johnson. Why Do We Care?. Administrator controls system resources Sets job priorities Responsible for keeping the system up “Gatekeeper” of the system. Administrative Concerns.

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Cluster Management

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  1. Cluster Management An Administrator’s Viewpoint CS 6260 Jason Eric Johnson

  2. Why Do We Care? • Administrator controls system resources • Sets job priorities • Responsible for keeping the system up • “Gatekeeper” of the system

  3. Administrative Concerns • What kinds of things should an Admin consider?

  4. Some Concerns • Cost of system • Cost of maintenance • Time • Money • Facilities • Suitability • Availability • Cost

  5. Some MORE Concerns • Access Control • Prioritization Problems • Security • Legal Considerations • Politics • User Support • Knowledge of Underlying Tools/Technology

  6. Potential Benefits • Why might a cluster be better than a single huge computer?

  7. Potential Benefits • Scalability • Hardware Cost • Minimized Risk of System-Wide Failure • Allows For Less Conflict Between Jobs

  8. Potential Drawbacks • Why might the single computer be better?

  9. Potential Drawbacks • Communication Between Nodes • Increased “Mess” • Takes more space • More cables (network, power) • More space • More heat

  10. Real World Example • Choosing Cluster Management Software • Bright1 vs. Scyld2

  11. Bright • GUI or Command Line • Self Contained Application • Built-In 3rd Party Integration with products like ScaleMP3

  12. Bright - GUI

  13. Bright - GPU

  14. Bright - ScaleMP

  15. Scyld • Command Line • Collection of Proprietary and Open-Source Tools • Integration Left to the User

  16. Scyld – Ganglia4 Mod

  17. Ganglia Screenshot courtesy of UC Berkeley Millenium Project5

  18. Class Exercise • Based on what we’ve just seen, which seems better? • Why? • What other considerations should an administrator have?

  19. References • 1) http://www.brightcomputing.com/ • 2) http://www.penguincomputing.com/software/scyld_clusterware • 3) http://www.scalemp.com/cluster • 4) http://ganglia.info/ • 5) https://www.millennium.berkeley.edu/

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