Dear all, Gordon Royle has the following issue. Any ideas?
--Stefan van Zwam. Begin forwarded message: > Subject: [sage-matroid] Memory > Date: April 22, 2013 2:24:05 AM EDT > To: sage-matr...@googlegroups.com > Reply-To: sage-matr...@googlegroups.com > > I'm trying to work with some collections of graphs and matroids, but I can't > seem to keep the memory usage under control... > > For example, I have a test file containing 100000 multigraphs that I want to > import into sage and then process. > > gs = [] > gs.append(Graph([(0,1,0),(0,1,1),(0,1,2),(0,1,3),(2,3,4),(2,3,5),(2,3,6),(4,5,7),(4,5,8),(4,5,9),(0,1,10),(0,1,11),(0,1,12),(0,1,13),(0,1,14)])) > gs.append(Graph([(0,1,0),(0,1,1),(0,1,2),(0,1,3),(2,3,4),(2,3,5),(2,3,6),(4,5,7),(4,5,8),(4,5,9),(0,1,10),(0,1,11),(0,1,12),(0,1,13),(0,2,14)])) > > and another 99998 lines of the same length. > > > The entire file occupies 14Mb of disk space. > > When I run it through sage, the memory usage of the python2.7 process > fluctuates dramatically from the 140Mb of the just started sage, up to over > 4Gb before finally settling at 950Mb when the file is fully imported. > > > So somehow, my 14Mb file has blown out to over 800Mb when imported into > Sage.... > > Given that this file is just a sample for my REAL file which has 4.2 million > graphs, I just can't see how to proceed. > > -- > > --- > You received this message because you are subscribed to the Google Groups > "sage-matroid" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-matroid+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. > > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
