Interpreting gminer terminal

I’ve started using gminer for alt coins. Two questions for interpretation of the printout.

  1. What are the different numbers under Shares – 411/2/0? I know the 411 is shares and understand what they represent in a PoW pool, however I am unclear on the 2 and 0.
  2. Why are shares being verified on the CPU as opposed to the GPU I set up?