Recompiling with higher number of ELEME/CONNE

Hi 

I remember I read somewhere which parameters to be modified to recompile the code (omp-v3.3) to include higher number of elements and connections. However I cant find it. To make it an accessible and handy post for others,  may I have the instructions on the parameters to be changed before recompiling. FYI, my domain has around 9E5 grids (still below 1E6) but the number of connections exceeds 3E6. Also please let me know  if there are hints about modifying other parameters (the number of chemicals - size of the matrices etc) for very large problems.

Kind regards

Kaveh Sookhak Lari