Article,
A Fast Iterative Algorithm for Recovery of Sparse Signals from One-Bit Quantized Measurements
CHECKPOINTING WITH MINIMAL RECOVERY IN ADHOCNET BASED TMR, 6 (4): 1-16 (October 2012)
DOI: 10.5121/iju.2015.6403
Abstract
This paper describes two-fold approach towards utilizing Triple Modular Redundancy (TMR) in Wireless
Adhoc Network (AdocNet). A distributed checkpointing and recovery protocol is proposed. The protocol
eliminates useless checkpoints and helps in selecting only dependent processes in the concerned
checkpointing interval, to recover. A process starts recovery from its last checkpoint only if it finds that it is
dependent (directly or indirectly) on the faulty process. The recovery protocol also prevents the occurrence
of missing or orphan messages. In AdocNet, a set of three nodes (connected to each other) is considered to
form a TMR set, being designated as main, primary and secondary. A main node in one set may serve as
primary or secondary in another. Computation is not triplicated, but checkpoint by main is duplicated in its
primary so that primary can continue if main fails. Checkpoint by primary is then duplicated in secondary
if primary fails too.
