Not only that, but on modern processors, the order of operations tends to be important. For instance, the FFT algorithm executes a fixed number of floating poin

Not only that, but on modern processors, the order of operations tends to be important. For instance, the FFT algorithm executes a fixed number of floating point calculations, but can perform very differently based on the ordering of these calculations with respect to memory access. For projects that take advantage of this, see: http://spiral.net http://spiral.net http://www.fftw.org/ http://www.fftw.org/