Getting core.exception.OutOfMemoryError error on allocating large arrays

[Sparsh Mittal]

I am running

enum long DIM = 1024L * 1024L * 1024L* 8L ;
void main() {
  auto signal = new double[DIM];
}


and getting core.exception.OutOfMemoryError error.  One option is 
to use short/int, but I need to use double. Also, on using large 
arrays, computer becomes slow.

Is there no workaround at all, so that I can work on large 
arrays? Please let me know.