The Air Pollution Application

1
The Air Pollution Application
CrossGrid Tutorial Exercise

J. Carlos Mouriño, Patricia González, María J.
Martín, Ramón Doallo and F. F. Rivera University
of A Coruña University of Santiago de Compostela
2
Introduction

• The air pollution application uses a Eulerian
  model to simulate the concentration of different
  pollutants in the environment of As Pontes Power
  Plant in A Coruña (Spain)
• We explain how to run the application into the
  Crossgrid tesbed using the MD
• We must launch the MD, click on the Start Jobs
  Wizard button and select the Air Pollution
  application.
• A graphical plugin allows the user to set the
  input parameters, and see the concentrations of
  pollutants graphically

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Input Parameters Tab
In this window several input parameters as the
simulation date, the number of hours of
simulation and the simulation model can be chosen.
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Description Tab
In this window the user can write a brief
description of the simulation and must specify
the path for the executable
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Resources Tab
From the Resources Tab we must specify the node
where we want execute the application, the job
type and the number of processors
6
Files Tab
In the Files tab we specify the input and output
files of our application. An output file for the
output refreshable image is needed
(mapadebits.bmp)
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Job Monitoring Dialog
After a job submission, we must click on the Job
Monitoring Dialog in the desktop of the MD and
this window will appear. It shows the status of
the different jobs. If a job is running we can
see its output.
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Output Plugin

• This output plugin is shown pressing Visualize in
  the job monitoring dialog
• The type box shows the pollutant that is being
  represented while the level box presents the
  altitude of the representation.
• It is no refreshable by the moment, only the
  pollutant concentration of the last iteration is
  shown

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Refreshable output

• This view is shown presing details in the job
  monitoring dialog and selecting the files tab
• We select our output file and press Visualize
• This image can be refreshed automatically setting
  a refresh period

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Step by Step exercise (1/2)

• Launch the Migrating Desktop (http//ras.man.pozna
  n.pl/crossgrid/)
• Click on the Start Jobs Wizard button.
• Select Applications -gt Air Pollution (The input
  plugin will be opened)
• Chose the date of the simulation (YYYYMMDD
  format), the start hour and the number of hours
  of simulation. (Input files for the date 20030215
  are provided, please select this in the
  exercise).
• Select the Description Tab.
• Set the Executable Path (/flatfiles/SE00/cg/wp1_4_
  4/STEMII_SE00-par-p4.exe)
• Select the Resources Tab
• Set the hostname (cg01.ific.uv.es2119/jobmanager-
  pbs-infinite) , the jobType (MPICH) and the
  nodeNumber (2).
• Select the Files Tab.

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Step by Step exercise (2/2)

• Add a new file, rename it to mapadebits.bmp, set
  a local filename in the Virtual Directory with
  the same name, set the type to out and the
  refresh to 5 or 10 seconds
• Press the Submit button.
• Click on the Starts Job Monitoring Dialog button,
  refresh the list of jobs and then refresh the
  last job until its status turn to Running.
• Press the Details Button and select the Files
  Tab.
• Select mapadebits.bmp and press Visualize.
• Set the refresh period to 5 or 10 seconds, and
  press apply.
• The image will change along the time while the
  program is running.
• This image represents the concentration of SO2 at
  300 m high.
• If you press the Visualize button in the Job
  Monitoring Dialog window the output plugin of the
  application will be shown. The representation
  scale is shown in the righ part. The represented
  pollutant and the level of the representation is
  also indicated. (This ouptput plugin still do not
  allow refreshable images)

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For More Information

• An explanation of the exercise proposed can be
  found in document
• CG1.4.4-TutorialExerciseDescription-v2.0.
  doc Actualiza la versión!!!
• This document and other information on the air
  pollution application can be found in
• http//www.des.udc.es/crossg
  rid