It looks like all threads are attempting to open a display on an xserver but Xlib has not been initialized to use multiple threads.
Interestingly, I can execute your code in my development build of pvpython just fine under Ubuntu 14.04. May I ask what you are planning to do with the multiprocessing package? Maybe there is another way you can accomplish it without the multiprocessing package? - Cory On Wed, Jul 8, 2015 at 10:05 PM, Sha Mo <[email protected]> wrote: > In order to use multi-core cpu well, I want to use multiprocessing module > in paraview python script. But following error was occurred when I try to > run following code on Paraview Python Shell: > > import multiprocessing > pool = multiprocessing.Pool(processes=4) > > paraview version 4.3.1 > Process PoolWorker-1: > Traceback (most recent call last): > Process PoolWorker-2: > paraview: Fatal IO error 2 (No such file or directory) on X server :0. > File "/usr/lib/python2.7/multiprocessing/process.py", line 249, in > _bootstrap > Process PoolWorker-3: > paraview: Fatal IO error 11 (Resource temporarily unavailable) on X server > :0. > paraview: Fatal IO error 11 (Resource temporarily unavailable) on X server > :0. > Process PoolWorker-4: > paraview: Fatal IO error 2 (No such file or directory) on X server :0. > Process PoolWorker-5: > paraview: Fatal IO error 11 (Resource temporarily unavailable) on X server > :0. > Process PoolWorker-6: > paraview: Fatal IO error 2 (No such file or directory) on X server :0. > Process PoolWorker-8: > Process PoolWorker-7: > paraview: Fatal IO error 2 (No such file or directory) on X server :0. > paraview: Fatal IO error 2 (No such file or directory) on X server :0. > [xcb] Unknown sequence number while processing queue > [xcb] Most likely this is a multi-threaded client and XInitThreads has not > been called > [xcb] Aborting, sorry about that. > paraview: ../../src/xcb_io.c:274: poll_for_event: Assertion > `!xcb_xlib_threads_sequence_lost' failed. > Aborted (core dumped) > > I wonder whether it is wrong way to use parallel programming on pvpython？ > [SG50] > ________________________________ > CONFIDENTIALITY: This email is intended solely for the person(s) named and > may be confidential and/or privileged. If you are not the intended > recipient, please delete it, notify us and do not copy, use, or disclose > its contents. > Towards a sustainable earth: Print only when necessary. Thank you. > _______________________________________________ > Powered by www.kitware.com > > Visit other Kitware open-source projects at > http://www.kitware.com/opensource/opensource.html > > Please keep messages on-topic and check the ParaView Wiki at: > http://paraview.org/Wiki/ParaView > > Search the list archives at: http://markmail.org/search/?q=ParaView > > Follow this link to subscribe/unsubscribe: > http://public.kitware.com/mailman/listinfo/paraview > -- Cory Quammen R&D Engineer Kitware, Inc.
_______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Search the list archives at: http://markmail.org/search/?q=ParaView Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/paraview
