Damian Eads wrote: > At work we noticed a significant difference in results occurring in two > versions of our code, an earlier version written in C++, and a later > version written in Python/numpy. The algorithms were structured about > the same. My colleague found the cause of the discrepancy; it turned out > to be a difference in the way numpy and the C++ program were compiled. > One used -mfpmath=sse, and the other, -mfpmath=387. Keeping them both > the same cleared the discrepancy.
Was it really a "significant" difference, or just noticeable? I hope not, that would be pretty scary! -CHB -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception [EMAIL PROTECTED] _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
