dolfin team mailing list archive

[Johan Hake <johan.hake@xxxxxxxxx>]

What triggers the error? Is it writing and/or reading to/from file. Is it 
assignment of data from within the read function in the test?

johan

On Tuesday March 29 2011 22:53:01 Anders Logg wrote:
> The parameter unit test is sometimes failing in parallel. On my local
> machine it always seems to work with 2 or 3 processes, but sometimes
> it fails with 4, giving the same error message as the buildbot:
> 
> ##Failure Location unknown## : Error
> Test name: InputOutput::test_simple
> uncaught exception of type St13runtime_error
> - *** Error: Unable to access parameter "filename" in parameter set
> "test", par
> ameter not defined.
> 
> Failures !!!
> Run: 2   Failure total: 1   Failures: 0   Errors: 1
> 
> There is a check for which process writes to file and a barrier that
> should make sure everyone waits until the file gets written.
> 
>   // Save to file
>   if (dolfin::MPI::process_number() == 0)
>   {
>     File f0("test_parameters.xml");
>     f0 << p0;
>   }
>   dolfin::MPI::barrier();
> 
>   // Read from file
>   Parameters p1;
>   File f1("test_parameters.xml");
>   f1 >> p1;
> 
> I thought that should do the trick, but apparently not.
> 
> Any ideas what goes wrong?
> 
> --
> Anders
> 
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