Hi I ran the thermal_electric example in the multiphysics folder using simple.py. I got the following error messages during execution:

sfepy: ====== time 0.000000e+00 (step 1 of 11) ===== sfepy: initial residual evaluation failed, giving up... Traceback (most recent call last): File "C:\sfepy\simple.py", line 170, in <module> main() File "C:\sfepy\simple.py", line 167, in main app() File "C:\sfepy\sfepy\applications\application.py", line 29, in call_basic return self.call(**kwargs) File "C:\sfepy\sfepy\applications\pde_solver_app.py", line 220, in call post_process_hook=self.post_process_hook): File "C:\sfepy\sfepy\solvers\ts_solvers.py", line 337, in __call__ state = self.solve_step(ts, state0, nls_status=nls_status) File "C:\sfepy\sfepy\solvers\ts_solvers.py", line 374, in solve_step nls_status=nls_status) File "C:\sfepy\sfepy\solvers\ts_solvers.py", line 185, in make_implicit_step vec_r = ev.eval_residual(state(), is_full=True) File "C:\sfepy\sfepy\discrete\evaluate.py", line 54, in eval_residual vec_r = self.problem.equations.eval_residuals(vec) File "C:\sfepy\sfepy\discrete\equations.py", line 679, in eval_residuals self.evaluate(mode='weak', dw_mode='vector', asm_obj=out) File "C:\sfepy\sfepy\discrete\equations.py", line 615, in evaluate term_mode=term_mode, asm_obj=asm_obj) File "C:\sfepy\sfepy\discrete\equations.py", line 832, in evaluate ret_status=True) File "C:\sfepy\sfepy\terms\terms.py", line 1368, in evaluate fargs = self.call_get_fargs(_args, kwargs) File "C:\sfepy\sfepy\terms\terms.py", line 1233, in call_get_fargs fargs = self.get_fargs(*args, **kwargs) File "C:\sfepy\sfepy\terms\terms_electric.py", line 27, in get_fargs grad = self.get(parameter, 'grad') File "C:\sfepy\sfepy\terms\terms.py", line 1082, in get is_trace=self.arg_traces[name], bf=bf) File "C:\sfepy\sfepy\discrete\variables.py", line 1634, in evaluate vec = self(step=step, derivative=time_derivative, dt=dt) File "C:\sfepy\sfepy\discrete\variables.py", line 1152, in __call__ % (self.name, step)) ValueError: data of variable are not set! (phi_known, step 0)

Do you know what is causing this error?

Also, could anyone provide a sample output for all the sfepy examples? That would be of great help.

• Nikhil