peersim - maximum and minimum functions using aggregation protocol

PeerSim

Speakers: Daniyar Mukhanov & Maneshka Paiva

P2P

Peer-to-peer

Decentralised connection

Application

Parallelizable

Content management

Collaborative

PeerSim

Configuration

Objective Create maximum and minimum functions using the Aggregate Protocol

Aggregation protocol

About Aggregation protocol

● A protocol that allows computation of average,minimum and maximum functions

● Each node holds a numeric value

● Each node knows its neighbor’s node values

Average function● Divide the sum of the

current node and neighbor’s node by 2

● The average is computed at each node in each cycle

Maximum Function● Computes the maximum

value between a node’s value and its neighbor’s values

Codes for max

Computing Max

Config File

MaxObserver

Returns the maximum value of the nodes in cycle

Returns the number of occurrences of maximum value

From Console

Prints the maximum value and the maximum data counts

Minimum Function● Computes the minimum

value between a node’s value and its neighbour’s values

Codes for Min

Computing Min

Config File

MinObserver

Returns the minimum value of the nodes in cycle

Returns the number of occurrences of minimum value

From Console

Prints the maximum value and the maximum data counts

Exploring Observer File Further

What does it do?

Included a print statement in observer file to view what value is been added to stats

Result?Value at each node was

obtained from the protocol

Pros

❏ Platform independent

❏ Composed of cycle driven and event driven simulation engines

❏ This allows it to be scalable(CD) and dynamic(ED)

❏ High configurability

Cons❏ Poor documentation

❏ Code is difficult to understand at first

Thank you!

questions?