pypho_cfiber is the same as pypho_fiber. The init and the call is the same.
pypho_cfibercode> calls a function which is written in c. This function calculates the fiber propagation very fast.
Before using the function you have to compile it on your computer. Follow the instructions.
You should define the number of threads your CPU has or you want to use. Please change the value in the file speedfiber.pyx:
N_cores = 4