Math Forum http://mathforum.org/kb List of forum topics en Re: Efficiently computing large numbers of vector norms http://mathforum.org/kb/thread.jspa?messageID=7923560&tstart=0#7923560 > I copied and pasted your code (but had]]> Nov 15, 2012 8:32:19 AM Nov 15, 2012 8:32:19 AM mattjacREMOVE@THISieee.spam 0 Re: Efficiently computing large numbers of vector norms http://mathforum.org/kb/thread.jspa?messageID=7923524&tstart=0#7923524 Nov 15, 2012 7:11:16 AM Nov 15, 2012 7:11:16 AM hmc05_remove_this_@ic.ac.uk 1 Re: Efficiently computing large numbers of vector norms http://mathforum.org/kb/thread.jspa?messageID=7923064&tstart=0#7923064 > Note that I removed all of the ctranspose operations from the loops, because in reality they are avoidable and contribute]]> Nov 14, 2012 6:49:19 AM Nov 14, 2012 6:49:19 AM hmc05_remove_this_@ic.ac.uk 2 Re: Efficiently computing large numbers of vector norms http://mathforum.org/kb/thread.jspa?messageID=7922822&tstart=0#7922822 > I cannot repeat your test, as I get an]]> Nov 13, 2012 7:03:15 PM Nov 13, 2012 7:03:15 PM mattjacREMOVE@THISieee.spam 3 Re: Efficiently computing large numbers of vector norms http://mathforum.org/kb/thread.jspa?messageID=7922733&tstart=0#7922733 Nov 13, 2012 2:23:10 PM Nov 13, 2012 2:23:10 PM hmc05_remove_this_@ic.ac.uk 4 Re: Efficiently computing large numbers of vector norms http://mathforum.org/kb/thread.jspa?messageID=7922720&tstart=0#7922720 > > It would be interesting to know]]> Nov 13, 2012 1:45:14 PM Nov 13, 2012 1:45:14 PM mattjacREMOVE@THISieee.spam 5 Re: Efficiently computing large numbers of vector norms http://mathforum.org/kb/thread.jspa?messageID=7922710&tstart=0#7922710 > It would be interesting to know the data dimensions you're working with.

For my tests, I had:

N1 =]]> Nov 13, 2012 1:22:15 PM Nov 13, 2012 1:22:15 PM hmc05_remove_this_@ic.ac.uk 6 Re: Efficiently computing large numbers of vector norms http://mathforum.org/kb/thread.jspa?messageID=7922670&tstart=0#7922670 > Sorry, please disregard my last post.]]> Nov 13, 2012 11:28:13 AM Nov 13, 2012 11:28:13 AM mattjacREMOVE@THISieee.spam 7 Re: Efficiently computing large numbers of vector norms http://mathforum.org/kb/thread.jspa?messageID=7922324&tstart=0#7922324
My original loop: 29.3665 secs
Loop-less]]> Nov 12, 2012 4:32:05 PM Nov 12, 2012 4:32:05 PM hmc05_remove_this_@ic.ac.uk 8 Re: Efficiently computing large numbers of vector norms http://mathforum.org/kb/thread.jspa?messageID=7922293&tstart=0#7922293 Nov 12, 2012 2:48:21 PM Nov 12, 2012 2:48:21 PM hmc05_remove_this_@ic.ac.uk 9