Hi, I'm quite sure that this is not a bug, but -- as has been noted in the answer to your stackoverflow question -- your system simply runs out of memory and the "OOM killer" terminates your process. I tried your PDF conversion example and it has a peak memory usage around 2.5GB -- how much physical RAM and swap does your system have? In case your process is killed for this reason, there should be a log entry in /var/log/syslog or /var/log/kern.log . Note that some computation code does not use the peak memory during its computations but in the end when all the results are saved to disk. In case you are really sure that your memory size is sufficient, please also try to run memtest -- maybe some of your RAM is defect (even though this should rather lead to random errors instead of the termination by the operating system).
** Package changed: python-defaults (Ubuntu) => linux (Ubuntu) ** Changed in: linux (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1027655 Title: Computations terminated by system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1027655/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs