[firedrake] compile problem

[Shipton, Jemma]

Thanks Lawrence - it's running fine now and I'll make the change you've suggested too…

J
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I think this is because your firedrake is not up-to-date enough.  The
Expressions with user-defined variables arrived on 20th of May.

If you do git branch --contains 2ad90e5 you can see if your local
firedrake branch has it (you may not be up-to-date enough).

Running with current firedrake master this test case works for me.

I also note that that script is not making best use of the user-defined
variables.  You can define the Expression before the timestepping loop
and then just update values inside it (rather than redefining the
Expression):


e.g.

uexpr = Expression(..., t=t, T0=T0)

u = project(uexpr, V)

while t < T:
    uexpr.t = t
    u.project(uexpr)

Cheers,

Lawrence
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