Re: [Gretl-users] question - Unstable regression results

It's more surprising that you could get differences on the same machine (with the same OS and the same pre-built gretl version), on different days. However, I've read that on MS Windows certain software, such as DirectX, may reset the precision of floating-point units. So it may be that -- when the results are so terribly sensitive to precision -- what gets printed by gretl depends on what else you've been running lately.