The problem is in posets, so you get it in all methods that construct the face lattice:
http://trac.sagemath.org/ticket/14356 On Monday, June 16, 2014 3:47:18 PM UTC+1, jplab wrote: > > Hey Sage-devel! > > I've been experiencing memory issues dealing with Polyhedron objects for a > while now... Perhaps it is time to look if something could be done. > > Here is a simple code reproducing the (what I believe to be a) memory leak. > > First, I use the garbage collector to force the cleaning of memory and > then look if the python command grows in memory in a "top". > > sage: while True: > P=Polyhedron(vertices=[[1,0,0],[0,1,0],[0,0,1]]) > eq=P.equations() > del P, eq > gc.collect() > ....: > 63 > 31 > 31 > 31 > 31 > ... > > It constantly collects garbage, which is to be expected, and on the long > run, the python command does not increase in memory usage. While, on the > contrary: > > sage: while True: > ....: P=Polyhedron(vertices=[[1,0,0],[0,1,0],[0,0,1]]) > ....: fv=P.f_vector() > ....: del P, fv > ....: gc.collect() > ....: > 0 > 0 > 0 > ... > > Which not to be expected I guess. Then, when one waits enough, one sees in > the "top" that the memory of python increases steadily... This is bad! > > I have observed the same behavior with the following functions: > > adjacency_matrix > f_vector > face_lattice > facet_adjacency_matrix > facial_adjacencies > graph > is_simple > vertex_adjacencies (although deprecated, also in the new method to produce > the output) > vertex_adjacency_matrix > vertex_graph > > Someone has an idea? > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
