If none else object, I think we should just push this fix into instant, as it has been a returning headache for quite a long time.
Could you make a pull request for your fork? But as os.system does not work on windows it would be nice to stick with Popen there. Also see the commented out code in the same module. Johan On Tue, Mar 25, 2014 at 2:57 PM, Jan Blechta <[email protected]>wrote: > After some digging, it seems that segfaults observed on OFED/InfiniBand > clusters (see [1], [2], [3]) are caused by implementation of > > subprocess.Popen > > Check your local subprocess.py:_execute_child. Parent does not seem to > keep hands of memory between fork() and exec() (as required [4], [5]), > especially as it is fiddling with garbage collector. > > I tried switching to os.system (posix implementation in [6]) instead of > subprocess.Popen and it seems promising. Check out [7] or enclosed > patch. > > Jan > > [1] https://answers.launchpad.net/dolfin/+question/219270 > [2] https://answers.launchpad.net/dolfin/+question/225946 > [3] http://fenicsproject.org/pipermail/fenics/2013-June/000398.html > [4] https://www.open-mpi.org/faq/?category=openfabrics#ofa-fork > [5] > http://www.openfabrics.org/downloads/OFED/release_notes/OFED_3.12_rc1_release_notes#3.03 > [6] http://svn.python.org/projects/python/trunk/Modules/posixmodule.c > [7] https://bitbucket.org/blechta/instant/branch/blechta/ofed-fork > _______________________________________________ > fenics mailing list > [email protected] > http://fenicsproject.org/mailman/listinfo/fenics > >
_______________________________________________ fenics mailing list [email protected] http://fenicsproject.org/mailman/listinfo/fenics
