I need to feed to an external program a number of points (in `Complex128` format) generated from the numerical evaluation of some function, e.g. $e^{i \vec{k}\cdot\vec{x}}$. The function is evaluated at points of some evenly spaced grid. I currently generate the values with `Table` (possibly multidimensional, and then `Flatten`'d) and send it to a file with `BinaryWrite`. However, this is rather slow, because I use a number of points in the order of $2^{24}$ or more. I tried with `ParallelTable`, but I inspected with `perf` and it appears that when transferring the data to the main kernel there's a lot of UTF string encoding going on for whatever reason, which defeats the speedup in the parallelization.

Is there any smarter way to accomplish what I need?