This is an experimental session in the lab to familiarize you with how OpenMP works on the Sun 450's.

Setup

A list of resources for this experimentation is available form the page for this course http://www.cs.rit.edu/~ncs/Courses/531.shtml.

In groups of two or three (because of the licensing restrictions), your task is to

• use assurec and assureview to identify what, if anything, is wrong with the following programs for parallel execution, i.e., what about them may cause the parallel version to not produce the same results as the sequential version?:
  • makefile
  • order.c
  • order1.c
  • order2.c
  • order3.c
  • order4.c

  You can download these files by doing a SHIFT left mouse click while positioned on the link.

  To use assureview,

  • make orderx, where x is the blank or 1-4
  • execute orderx, where orderx is what you compiled in the last step.
  • make assure

• Experiment with rearranging the code and/or using other OpenMP pragma to try to create a program that will pass assureview's tests.

• A challenge: mandel.c is a sequential c program that generates the colors of the pixels in a 64X64 Mandelbrot set image. Add the appropriate OpenMP pragma and rearrange code as necessary until assurec and assureview find no errors. Summarize what you needed to do.

Be prepared to report on Tuesday what you have tried and what success, if any, you had. For your convenience, you may download answersheet for making notes.

NOTE: Once your program satisfies assureview, you'll need to recompile it using guidec before actually running it in a parallel mode where you might expect to get speedup. (For example, guidec -o order1 order1.c)