I have opened ticket #14154 with a more detailed description, and the code that triggers the problem (eventually).
El miércoles, 20 de febrero de 2013 22:21:22 UTC+1, William escribió: > > On Wed, Feb 20, 2013 at 11:27 AM, mmarco <[email protected] <javascript:>> > wrote: > > I am writing some complicated code to compute braid monodromy of plane > > curves. In order to do so, i am using a @parallel decorator on some > > function. But i am finding some strange behaviour: the first time that i > run > > it, it works ok. But after that, if i try to re-run the same > computation, i > > get no answer. After a long wait (much longer than the expected time for > an > > answer), i stop the computation (pressing ESC in the notebook), and i > get > > the message "killing any remaining workers". > > > > Has somebody experienced something like this? Is there any known > solution? > > @parallel is just a lightweight wrapper around the operating system > fork -- it's a few hundred lines of code total. See > > > http://hg.sagemath.org/sage-main/file/ec1fb07db6e2/sage/parallel/use_fork.py#l1 > > > I have no clue what problem you're having, given the ambiguous nature > of your description and that you did not provide any source code. > However, a general issue with fork involves what happens file > descriptors, e.g., open connections to subprocesses -- it's possible > that could be relevant for you... > > William > > > > > > > -- > > 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 [email protected] <javascript:>. > > To post to this group, send email to > > [email protected]<javascript:>. > > > Visit this group at http://groups.google.com/group/sage-support?hl=en. > > For more options, visit https://groups.google.com/groups/opt_out. > > > > > > > > -- > William Stein > Professor of Mathematics > University of Washington > http://wstein.org > -- 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sage-support?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
