have you seen www.fortran.com?

It was thus said that the Great Chris M once stated: Mathematical simulations. Back in college, I wrote a program (in C, didn't really have a Fortran compiler for the platform) that did a horrendous number of calculations (looking for attractors---please don't ask for more of an explanation as I didn't even really understand what my employer was looking for, but I could write the program to his specifications) that took a year to run. Even a 10% improvement in speed would have nocked a month off the run time [1]. Probably not. Games typically simplify the physics, and use a lot of tricks to get "acceptable" looking results, not "accurate" results. There's a difference there. -spc (Who's old enough to have taken Fortran in college ... ) [1] Last year, I did some tests, and was sad (and amazed) to see that the same problem I did over a decade previously would have taken maybe a week on a modern quad-core machine. Then again, had I such equipment available to me back then, the work off the backend would have possibly taken a year [2]. [2] The program generated images that needed to be run together into an animation and transferred to VCS tape. The editing of the results alone took several days of constant work.