On Mon, 11 Aug 2014 14:37:54 -0400 Aniruddha Jana <[email protected]> wrote:
> Hello, > > I am just starting out with FEniCS and was trying out the Python > Cahn-Hilliard example under > 'dolfin-1.4.0/demo/documented/cahn-hilliard/python’. However, I get > the following error. Any thoughts on this issue? What mistake am I > making? > > The detailed error is copied below. I have FEniCS built from source > and running on an Ubuntu 12.04 machine. The SWIG version in the > machine is 2.0.4. You have to build DOLFIN with parallel linear algebra backend, i.e. PETSc or Trilinos. The former one is strongly preferred and currently only one being supported by DOLFIN. Jan > > Many thanks, > Aniruddha > > mpirun -n 2 python demo_cahn-hilliard.py > Number of global vertices: 9409 > Number of global cells: 18432 > Traceback (most recent call last): > Traceback (most recent call last): > File "demo_cahn-hilliard.py", line 70, in <module> > u = Function(ME) # current solution > File > "/home/jana/Builds/lib/python2.7/site-packages/dolfin/functions/function.py", > line 279, in __init__ self.__init_from_function_space(V) File > "/home/jana/Builds/lib/python2.7/site-packages/dolfin/functions/function.py", > line 322, in __init_from_function_space cpp.Function.__init__(self, > V) File > "/home/jana/Builds/lib/python2.7/site-packages/dolfin/cpp/function.py", > line 715, in __init__ > _function.Function_swiginit(self,_function.new_Function(*args)) > RuntimeError: > > *** > ------------------------------------------------------------------------- > *** DOLFIN encountered an error. If you are not able to resolve this > issue *** using the information listed below, you can ask for help at > *** *** [email protected] > *** > *** Remember to include the error message listed below and, if > possible, *** include a *minimal* running example to reproduce the > error. *** > *** > ------------------------------------------------------------------------- > *** Error: Unable to resize uBLAS vector. *** Reason: Distributed > vectors not supported by uBLAS backend. *** Where: This error was > encountered inside uBLASVector.cpp. *** Process: unknown > *** > *** DOLFIN version: 1.4.0 > *** Git changeset: > *** > ------------------------------------------------------------------------- > > File "demo_cahn-hilliard.py", line 70, in <module> > u = Function(ME) # current solution > File > "/home/jana/Builds/lib/python2.7/site-packages/dolfin/functions/function.py", > line 279, in __init__ self.__init_from_function_space(V) File > "/home/jana/Builds/lib/python2.7/site-packages/dolfin/functions/function.py", > line 322, in __init_from_function_space cpp.Function.__init__(self, > V) File > "/home/jana/Builds/lib/python2.7/site-packages/dolfin/cpp/function.py", > line 715, in __init__ > _function.Function_swiginit(self,_function.new_Function(*args)) > RuntimeError: > > *** > ------------------------------------------------------------------------- > *** DOLFIN encountered an error. If you are not able to resolve this > issue *** using the information listed below, you can ask for help at > *** *** [email protected] > *** > *** Remember to include the error message listed below and, if > possible, *** include a *minimal* running example to reproduce the > error. *** > *** > ------------------------------------------------------------------------- > *** Error: Unable to resize uBLAS vector. *** Reason: Distributed > vectors not supported by uBLAS backend. *** Where: This error was > encountered inside uBLASVector.cpp. *** Process: unknown > *** > *** DOLFIN version: 1.4.0 > *** Git changeset: > *** > ------------------------------------------------------------------------- _______________________________________________ fenics mailing list [email protected] http://fenicsproject.org/mailman/listinfo/fenics
