title: How is a CUDA kernel launched?
body: <p>I have created a simple CUDA application to add two matrices. It is compiling fine. I want to know how the kernel will be launched by all the threads and what will the flow be inside CUDA? I mean, in what fashion every thread will execute each element of the matrices.</p>
  
  <p>I know this is a very basic concept, but I don't know this. I am confused regarding the flow.</p>