Running separate C code on separate core in NIOS Multi-core system

Hello,

I have done projects on NIOS II core for single processor system.

Now, I need to learn and implement a multi-core system.

I have very basic doubts for a multi-core system:

1. If I have two independent cores. How to run separate c codes on that two core ?? And that two codes should start simultaneously.

Is it compulsory to make one core as Master to start the another core??

2. If I have dependent cores, How to communicate between two cores?? While communicating with a slave peripheral, we generally knows the address for diff registers in slave device and use to specify that address during Avalon MM interface. But if i want to send some data from one core to another, what are all the option and how ??

Please Suggest.

-Anuj