I have 16 1D arrays with approximately 10-11 million double-precision elements each. I need to execute a cross-correlation across them, i.e., 1 with 2, 1 with 3, ..., 1 with 16, 2 with 3, 2 with 4, ..., 2 with 16, and so on. This cannot be done efficiently on my MacBook Intel Core 2 duo 2.4 GHz, with 4GB of RAM. My question is, what is the typical approach, if not brute force (faster processor, more RAM) that people use to overcome this problem, or problems like it?
I asked this question on Stack Overflow a few minutes ago, but I realized that there might be more people here who have dealt with this particular problem.