Le dimanche 10 avril 2016 à 16:25 +0530, K leo a écrit : > These couple weeks I ran julia (0.4.5) on a Xubuntu guest of > VirtualBox hosted by a Macbook Pro. During the hour-long runs, the > system crashed a few times: user interface froze. This has happened > a few times in the past when I ran Julia natively on a Xubuntu > computer. So hardware problem can be ruled out. No program should be able to crash the whole system. So this really sounds like a bug in Xubuntu. What could also happen is that you run out of memory, and the system is swapping so much that it's never able to recover.
In any case, this is likely not related to @inbounds, which could only trigger a crash of Julia, but not of the whole system. Regards > Trying to guess what could be the problem for the crashes, I put my > attention on the use of @inbounds and @simd in the code. The > documentation says @inbounds can cause crash when the index gets out > of bound. @simd was not said of possibly causing crashes, but it is > said of being experimental. So I took those out and re-run the code. > > After a few hours, the code finishes without crashing. Though this > does not lead to the conclusion that the two modifiers were the > culprit, as the code did not crash everytime in the past, this rather > makes me wonder if @inbounds can possibly be the cause. Look, the > code finishes without having an index out of bound problem. Is this > enough to conclude that @inbounds was not the problem? > > What can make @simd crash the system? > > Another possible cause might be the version of Julia I used. For the > past weeks, I used the Linux generic version of Julia. This > successful run was on the version I got from Ubuntu's PPA. In the > past, I also juggled between the two sources for Julia. I can't be > certain in saying that the generic version crashes on ubuntu, but my > question is what are the real differences between the two version of > Julia? > >
