Comment by e-kayrakli

Locales do control where the data is stored. For example:

  var HostArr: [1..10] int;  // allocated on the host memory
  
  on here.gpus[0] {
    // now we are on a GPU sublocale...
    var DevArr:[1..10] int;  // allocated on the device memory
    ...
  }

In the near term, we are planning to publish our 2nd GPU blog post where we will discuss how to move data between device and host.