1. The case for VM based Cloudlets in Mobile Computing
-Mahadev Satyanarayanan†, Paramvir Bahl‡, Ramon Caceres•,
Nigel Davies◦
†Carnegie Mellon University,‡Microsoft Research,•AT&T Research,
◦Lancaster University
Presented by: Anjali Sridhar

2. Current Limitations of Mobile Devices
Processor Speed
Memory Size
Battery Life
Intrinsic to Mobility!
Applications that augment human cognition require LARGE processing power and energy!

3. Motivation
Compute intensive applications based on image processing, speech recognition, natural language processing, augmented reality etc that augment cognitive ability of users needs to be handled by a system capable of providing low latency results to the user

4. Example Scenario Cognitive assistance for an Alzheimer’s patient
- lightweight wearable computer with a head-up display in the form of an eyeglass
Eyeglass has a camera for scene capture and ear phones for audio feedback
Augmented reality system to aid cognition

5. Proposed Solution
Leverage the cloudlet-based resource-rich mobile computing resource
Reduced one hop latency and peak bandwidth demand of multiple users

6. Cloud Vs Cloudlet
Why is the Cloud not sufficient?

7. Cloudlet Cloud on Internet Mobile Device Distant Cloud on Internet
Low Latency
High Bandwidth
Wireless network
Coffee Shop Cloudlet

8. Solution Transient Cloudlet Customization Use of VM technology:
VM Migration – Suspend VM, migrate the entire VM
Dynamic VM Synthesis - Apply an overlay VM and resume execution

9. Cloudlet Customization – Dynamic VM Synthesis Approach

10. Implementation - Kimberley
Mobile Device : Nokia N810 Internet Tablet
Mobile OS: Maemo 4.0 linux
Cloudlet Infrastructure: Desktop Computer
Cloudlet OS: Ubuntu Linux

11. Kimberley
Steps: 1)Prepare the overlay VM kimberlize <baseVM> <install-script> <resume-script> 2) Connect to the Cloudlet 3) Receive VM residue, Cleanup

12. Kimberley
Creation Time for VM Overlays

13. Speed of VM Synthesis

14. Challenges Business Model – Top Down or Bottom Up?
Base VM compatibility – How many Base VM’s do we need to have present at the cloudlet?
Trust and Security – Is the cloudlet secure?

15. Thank You!