tag:blogger.com,1999:blog-6798371251264429161.post5160690963875043687..comments2008-02-15T09:11:03.512ZComments on Bitwiese: Gaining speed with WeaveManuelnoreply@blogger.comBlogger5125tag:blogger.com,1999:blog-6798371251264429161.post-71734299265496563562008-02-15T09:11:00.000Z2008-02-15T09:11:00.000ZThe iteration happens several times; actually it i...The iteration happens several times; actually it is part of the insert function of a data structure. [1]<BR/><BR/>The reduction of crossings of the C <-> Python boundary is what seems to be a major factor of the speedup here... and the data is not copied.Justinhttp://www.blogger.com/profile/04972102120598633110noreply@blogger.comtag:blogger.com,1999:blog-6798371251264429161.post-25040344427960598022008-02-15T06:25:00.000Z2008-02-15T06:25:00.000ZHow often did you iterate the given code with 1M e...How often did you iterate the given code with 1M elements?<BR/><BR/>There could be some overhead because of boundary crossing from C to Python land, right? Does the data get copied from Python data structures in to C ones?Manuelhttp://www.blogger.com/profile/13212825999891301736noreply@blogger.comtag:blogger.com,1999:blog-6798371251264429161.post-84384442782594321742008-02-14T08:14:00.000Z2008-02-14T08:14:00.000ZThere should be no overhead except the compiling o...There should be no overhead except the compiling once, since weave compiles a builtin function.<BR/><BR/>I had N of different sizes, starting at roughly ~2^20.Justinhttp://www.blogger.com/profile/04972102120598633110noreply@blogger.comtag:blogger.com,1999:blog-6798371251264429161.post-50613561131575098262008-02-14T03:40:00.000Z2008-02-14T03:40:00.000ZWhat is your "n"?<br><br>Did you try to look if th...What is your "n"?<BR/><BR/>Did you try to look if there is some overhead involved? Where is the break-even?Manuelhttp://www.blogger.com/profile/13212825999891301736noreply@blogger.comtag:blogger.com,1999:blog-6798371251264429161.post-63577679951986933462008-02-13T17:11:00.000Z2008-02-13T17:11:00.000ZUsing psyco can be as simple as putting the follow...Using psyco can be as simple as putting the following two lines at the top of your code:<BR/><BR/>import psyco<BR/>psyco.full()<BR/><BR/>It probably won't give you as great a speed increase as Weave, but I'd say it's easier to use.Weavejesterhttp://www.blogger.com/profile/15518934201255364120noreply@blogger.com