[yt-users] Re: Increasing number of CPU cores can not speed up the works

Hi Britton, Thanks for your prompt reply. I followed your advice that move I/O step outside the duration of timer[1] and make the total time longer, and then I obtain the scaling [2]. Look at figure[2], we can see that the performance of 2 cores is only 124/112~1.1 times better than that of 1 core. Does this make sense? Hope I really miss something because I have a huge data to be analysed. Thanks. [1] http://paste.yt-project.org/show/152/ [2] http://i.imgur.com/3vALOL1.png Rocky