Introduction to Cyberinfrastructure and Grid Computing
Spring, 2007

CS 696 Assignment #5 (Due Friday, 18-May-07, 8:00 am)
(This page last updated on 15-May-07)
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Problem 1:    SimpleMathWebServices
  • For this project, you have two options for the final implementation
    • Option 1
      • Choose to implement operations from Group I or Group II
      • Make sure that your service is hosted in your port range and notify the class
      • Write a client that access operations from the other Groups, hosted by another class member
    • Option 2
      • You may choose to implement all the operations (from both groups)
      • You should fire up one service for each operation, and host on different ports.
      • Demonstrate that your client can access multiple services.
  • Problem: Compute the properties of an Ellipse using distributed Web Services:
      An ellipse centered at the point (h,k) and having its major axis parallel to the x-axis is specified by the equation
      (x-h)^2/a^2 + (y-k)^2/b^2 = 1
      where (a,b) are the major and minor axes of the ellipse. In parametric form:
      x = h + a cos(t)
      x = h + a cos(t)
      where -pi <= t <= pi. Compute the following properties for the unit circle, and for [h,k,a,b]=[-1,-2,4.5,2.75]:
      • eccentricity
      • circumference
      • area
      • arclength
      • radius at a given (x,y) location
  • Use the Tutorial verion of SimpleMath web service
    • The tutorial version has been installed onto pipeline3.acel.sdsu.edu
    • locate your service in your home directory
    • you will be assigned a port number for hosting your service, and a range of ports for your own testing. Do not use other ports because you may interfere with another student
  • Extend the client to access muliple instances of this service
    • Hint: see tutorial for mult ResourceProviders for hints.
    • you need to access once service from each 'Group' (see below)
    • How long does this take?
  • Extend the server to support the client:
    • modify to operate with floating point numbers
    • add services: Group I: sqrt, division, exponential (x^y)
    • add services: Group II: sin(), cos(),tan(), etc.
    • Reference:http://en.wikipedia.org/wiki/Ellipse


Problem 2:   Using the TeraGrid
  • WS-GRAM:
    • Write a simple shell script that
      • retrieves the MOTD from the host on which the script is running: /etc/motd
      • creates basic header information (full hostname, ip address, date, userID, etc.)
      • writes this all to a file
      • stores the file in 2 places: host from which you submitted the job, and your home directory on another TG machine.
    • submit this job to the WS-GRAM service as a fork process
    • submit this job to the WS-GRAM  PBS queing system, run on multiple nodes (e.g. 4)
    • submit to gram services on 2 other hosts

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