Seminar
1 Summary :
Paper
1:
Presented
the Dynamic Voltage Scaling (DVS) algorithm to reduce energy dissipation by
lowering the Supply Voltage and operating frequency of the devices.
Discussed Time Constrained applications and the effects of changing the frequency of the Processor violating some of the timeliness guarantees
And discusses DVS algorithm that consider
Deadlines and are tightly coupled with the actual real time scheduler of the
O.S.
Discussed
Classic Real time Schedulers and the types of Real time Schedulers which
involve
Rate
Monotonic (RM) and Earliest Deadline First (EDF) algorithms.
1.Static
Voltage Scaling
2.
Cycle Conserving RT-DVS
3.
Look – Ahead RT DVS :
Paper
2: SPAN : An Energy-Efficient Coordination
algorithm for topology maintenance in Ad hoc Wireless Networks.
Presented SPAN a power saving technique for multi hop ad hoc wireless networks that reduces energy consumption without significantly diminishing the capacity or connectivity of the network
.
Discussed on the design of Span, the role of co-ordinators, Co-ordinator
announcements and withdrawals and Span Node Broadcasts.
Paper
3: Dynamic Power Management for Portable Systems
Presented
Different Device Power States and System Power States. Presented the Role of Power Manager
Which
observers the overall work load of the system and decides when and how to force
power state transition.
Discussed the different timeout policies.
Discussed
the time-based SMDP Progression.