Install BOINC here from Google Play ->
https://play.google.com/store/apps/details?id=edu.berkeley.boinc
Here is the tip, because it was so hot in japan now. So,If you ticked "Compute on Battery" then the limit maximum setting temperature will pause the calculate processes.
Tick "Show advanced preference and control .." and set "Max. battery temperature" to upper value (my case at 90 degree)
