Python vs C++

After 10 more days experiment, python's poor performance is the reason for my to change the language to C++/C, I found some information about how to write a C extension for python, but it is not easy as the description. But the advantage of python is the concise code style, tons of module to use, it is a double side sword, easy coding make poor running speed. If you need performance, use C, if you need easy coding, use python. It should be my wrong choice at beginning, at least I learn a new language and some experience.

By the way, thanks Turnbeutel and TD's sharing, I ran their code for 22 hours, time consuming project
120 = MIN_EPOCHS
200 = MAX_EPOCHS
64 = FEATURES
3000 counts RMSE = 0.783169(y value)
6000 counts RMSE = 0.7491227
Final RMSE = 0.735715

1 count make 7.5 seconds(By Simon Funk's blog, yes, it real cost around 7.5 seconds, amazing)
min epochs = 120, at least, it will cost 120*7.5 = 900 seconds = 15 minutes for 1 feature
features = 64, so we total need 64*15=960 minutes = 16 hours, but it is the minimal, my wee ibmx60s has 3G ram, 1.6 dual core cpu, spent almost 22 hours to finish the running.

Another method to calculate the total time
total count = 7680, each count spends 7.5s, 7680*7.5=57,600 second = 960 minutes = 16 hours