Yooooooooooooo !!! > I upgraded to Sage 6.0, and the output is still wrong. I then checked IBM, > and a new version of CPLEX was released in early December 2013. With CPLEX > 12.6.0 and Sage 6.0, I now get the correct answers.
HMmmmmmmm O_o > So it seems that CPLEX 12.5.10 was the culprit. Though it is surprising to > me that there would be such a basic bug. I am somewhat worried that there is > something wrong with the CPLEX interface code in Sage, but it seems very > straightforward. Well, at first we stored all the LP data, but now we really just forward every Sage command to the solver-specific backend. But if there was a bug like that in Cplex, it is highly unlikely that all tests passed in the graph/ folder. It is stuffed with binary problems. > I recall having weird problems using CPLEX in Sage in the past; one specific > instance from summer 2012 jumps to mind. I'll see if I can't dig up one of > those instances and see if they have been fixed with new versions of Sage and > CPLEX. Okay ! > Do you mean http://trac.sagemath.org/ticket/14581 ? Yep sorry >_< Nathann -- 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. For more options, visit https://groups.google.com/groups/opt_out.
