title: How does Scala attain parallelism?
body: <p>I am taking a course on distributed systems and we have to make our project using Scala. Our instructor told us that Scala is good in the sense that it uses multiple cores to do the computation and uses parallelism to solve problems while being integrated with the actor model.</p>
  
  <p>This is a theoretical question. I have learned some basics about the actor model using Akka and my question is that, while programming, does the user have to provide the details to the compiler so that various actors work on multiple cores, or does Scala take care of that and use multiple cores for various actors?</p>
  
  <p>In a nutshell my question is: when we declare multiple actors using the Akka libraries in Scala, does Scala compiler automatically use the multi-core CPU power to distribute various actors among cores, or does the programmer have to provide some input to do this?</p>