Additionally, what should we do if N is so large that we cannot gather the results into a single process? When N is large, even if the original matrix has a low non-zero rate, the resulting matrix is likely to have a non-zero rate close to 1. So for MEM = 230g, we can only do N < 2500000.

Should we write the results to a file? But will Setonix allow us to create such a large file? Since the time required to combine the results is also a critical factor in performance, I would appreciate clarification on this matter.