On 17 Apr 2014 01:57, "onefire" <onefire.myself@gmail.com> wrote:
>
> What I cannot understand is why savez takes more than 10 times longer than saving the data to a npy file. The only reason that I could come up with was the computation of the crc32. 

We can all make guesses but the solution is just to profile it :-). %prun in ipython (and then if you need more granularity installing line_profiler is useful).

-n