Follow-up Comment #211, task #7807 (project relax): The following timing script and log file demonstrate that the numpy.dot() out argument is not operating as it should be. Using the out argument should be faster, but this example shows at least for numpy 1.6.2 and 1.8.0 that it is slower! Therefore the only conclusion that I can make is that the numpy people have not implemented this efficiently and they do not use the fast BLAS/LAPACK inplace operations. (file #21039, file #21040) _______________________________________________________ Additional Item Attachment: File name: dot_speed2.py Size:4 KB File name: dot_speed2.log Size:1 KB _______________________________________________________ Reply to this item at: <http://gna.org/task/?7807> _______________________________________________ Message sent via/by Gna! http://gna.org/