Hi Ameya,

I'm not sure I understand the problem correctly. The maximum number of supersteps allows you to halt the computation when that threshold is reached. The RMSE can be computed within the master compute.

What do you want to achieve exactly?

On Thu, Nov 21, 2013 at 10:47 PM, Ameya Vilankar <ameya.vilankar@gmail.com> wrote:
I am implementing a machine learning algorithm on top giraph. The algorithm converges when all the vertices call voteToHalt or some max number of supersteps have completed. 
I want to calculate the RMSE error  after the algorithm has converged. But the problem is either all the vertices have called vote to halt or (in the case where we reach max supersteps) only some of them are still active.
I need to reactivate or wake up all the vertices. Is there any way in giraph that I could do this?

Ameya Vilankar

   Claudio Martella