#13 How to increase the no of iterations in Pagerank

[Ashutosh Raghuvanshi]

If i run Pagerank on soc-livejournal1 dataset it completes in 60 iterations but if I want to run it for more number of times then what to do?
-p iter_num=50 (any no. less than 60) works but -p iter_num=70 (any no. greater than 60 doesn't work)

even tol=0.1 is only for checking...that also doesn't go for more accurate results.

so please help