Hi, Thanks for the suggestion.
Unfortunately I'm using university managed machines here, so I have no control over the distribution, not even root access. However, I just downloaded the latest Enthought distribution, which uses numpy 1.3, and now numpy is only 30% to 60% slower than matlab, instead of 5 times slower. I can live with that. (whether it uses atlas now or not, I don't know). Cheers David Quoting Jason Rennie <jren...@gmail.com>: > Hi David, > > Let me suggest that you try the latest version of Ubuntu (9.04/Jaunty), > which was released two months ago. It sounds like you are effectively using > release 5 of RedHat Linux which was originally released May 2007. There > have been updates (5.1, 5.2, 5.3), but, if my memory serves me correctly, > RedHat updates are more focused on fixing bugs and security issues rather > than improving functionality. Ubuntu does a full, new release every 6 > months so you don't have to wait as long to see improvements. Ubuntu also > has a tremendously better package management system. You generally > shouldn't be installing packages by hand as it sounds like you are doing. > > This post suggests that the latest version of Ubuntu is up-to-date wrt > ATLAS: > > http://www.mail-archive.com/numpy-discussion@scipy.org/msg13102.html > > Jason > > On Fri, Jun 5, 2009 at 5:44 AM, David Paul Reichert < > d.p.reich...@sms.ed.ac.uk> wrote: > >> Thanks for the replies so far. >> >> I had already tested using an already transposed matrix in the loop, >> it didn't make any difference. Oh and btw, I'm on (Scientific) Linux. >> >> I used the Enthought distribution, but I guess I'll have to get >> my hands dirty and try to get that Atlas thing working (I'm not >> a Linux expert though). My simulations pretty much consist of >> matrix multiplications, so if I don't get rid of that factor 5, >> I pretty much have to get back to Matlab. >> >> When you said Atlas is going to be optimized for my system, does >> that mean I should compile everything on each machine separately? >> I.e. I have a not-so-great desktop machine and one of those bigger >> multicore things available... >> >> Cheers >> >> David >> > > -- > Jason Rennie > Research Scientist, ITA Software > 617-714-2645 > http://www.itasoftware.com/ > -- The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336. _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
