Large 2D array gives segmentation fault

Question

I am writing some C++ code in Linux where I have declared a few 2D arrays like so:

 double x[5000][500], y[5000][500], z[5000][500];

During

Answer 1

You may want to try and use Boost.Multi_array

typedef boost::multi_array<double, 2> Double2d;
Double2d x(boost::extents[5000][500]);
Double2d y(boost::extents[5000][500]);
Double2d z(boost::extents[5000][500]);

The actual large memory chunk will be allocated on the heap and automatically deallocated when necessary.