Allocating large 2D array in D

[Sparsh Mittal]

I am allocating 2d array as:

double[gridSize][gridSize] gridInfo;
which works for small dimension, but for large dimension, 16Mb 
limit comes.

Would you please tell me how do allocate a large 2d array (which 
has to be done as a dynamic array)? It is a square grid and 
dimensions are already known.

I also searched internet but could not find an answer. Thanks.