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Problem running in parallel with initial guess

+1 vote

Hi, I have working code in FEnics to solve a coupled problem but for the problem to converge i give non zero initial guess as suggested in forum here. Using this my problem converges but i am not able to run it in parallel as FEnics gives an error on the guess which is 

u.vector().set_local(rand(u.vector().size()))
u.vector().apply("")

and the error i get is :

u.vector().set_local(rand(u.vector().size()))
RuntimeError:

I would appreciate any help in this regard.
Thanks.

asked Feb 15, 2017 by kaushikv123 FEniCS Novice (390 points)

Hi, you need local_size.

commented Feb 15, 2017 by MiroK FEniCS Expert (80,920 points)

Thanks MiroK. It worked.

commented Feb 15, 2017 by kaushikv123 FEniCS Novice (390 points)
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