Java Based Visualizer for BeoSimMichael Bassily

SURE 2004

Advisor: Dr. Ligon

Background

•What is BeoSim?

•A mini-grid simulator -Mini-grid: a collection of clusters limitedto campus wide setting

•Event Driven

•Used for testing of meta-scheduling algorithms:

Higher level distributed scheduling process, through which actions of all local schedules are coordinated on a grid wide bases, used for Co-allocation of clusters

Example Mini grid

Co-allocation

Problem

The output file of BeoSim can sometimes be thousands of lines long, a way is needed so that the user can easily see what is occurring at any given time point, a Visualizer is needed!!!

There is also a previous Visualizer, but it is too slow.

Visualizer GUI Concept Figure

New Visualizer Components

The Data structure:JobNode.java: holds data about each specific jobTimeSlice.java: holds data about each time stampTimeSack.java: holds data about the entire parse

The Parser: BeoParse.jj

Based on sun standard compiler compiler JavaCCBased on regular expressions, i.e.:

("\n" | "\r")* Header() Body(currentData) Footer(currentData) <EOF>Header():<HDR> ("\n" | "\r") <NUM>+ ("\n" | "\r")

GUI Interface:

BeoVizGuie.java: main frame holder

Sub files for each inner frame:

ClusterFrame.java – displays cluster allocation information

JobAllocFrame.java – displays timeline of running jobs

QueueFrame.java – displays instantaneous and average queue lengths

StatsFrame.java – displays usage statistics such as grid utilization percentage

Visualizer Constructs

OLD •Used 3rd party graphic package JFreeChart

•Large data structure

New •All Native java:

AWT and SWING

•Data structure at most the size of number of time stamps

GUI Interface

Runtime Improvements

The new Visualizer is much faster!!!!