Check the registered students page to find out who is partnered with whom and what day people are presenting on. The assigned dates are final, unless you can switch with someone on your own. If you do this, you MUST tell me immediately. Always print up slides of your talk in case the high-tech version doesn't work out. It fixes a remote debugging problem.
More source code fixes on the project page.
Don't forget that your project has to not only finish, but actually get the right answers on the applications. It'll tell you if it passed or failed. For water, the output from the program at each time step should be the same as you get when you run with only 1 processor. As an aside, LU and SOR only use barriers, so they are a good place to start. Water throws in the complexity of locks, so save it until you get LU and SOR working first.