On Sat, Jul 17, 2010 at 5:57 AM, Robert Miller <r...@rlmiller.org> wrote: > Although > > http://trac.sagemath.org/sage_trac/ticket/5906 > > was supposed to eliminate this problem for good, sometimes random > (i.e. spring-layout) algorithms seem to trigger it, in particular when > a short path happens to get put into a straight vertical or horizontal > line. What surprises me is that it is not reproducible, even though > the doctesting framework is supposed to not be random in these types > of cases.
When I developed randstate.pyx (reproducible "random" numbers), I found the places I needed to fix by searching for doctests that weren't being run because they were marked "# random" and trying to make them reproducible. So I wouldn't have fixed any use of random numbers that wasn't exposed in a "# random" doctest. It looks like there are a few such uses in graphs/; I'll look into fixing them. Everybody, let me know if you know of other places in Sage where randomness is not under the control of the randstate framework (for example, places you haven't been able to doctest because the answer changes on every run). Or fix it yourself! It isn't hard, and randstate has copious documentation. By the way, I'm testing "sage -t graph_plot.py" in an infinite loop on my machine, and no failures so far. It's run a lot more than 20 iterations by now. Carl -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
