[mesa-users] MLT problem

Robert Farmer rjfarmer at asu.edu
Mon Jan 11 13:29:54 EST 2016

Can you tell me your mesa version and send inlists and any mod files used,
that trigger the problem please?


On Mon, Jan 11, 2016 at 11:24 AM, Kenny Van <kvan at ualberta.ca> wrote:

> Hi everyone,
> So I've run into some issues with the code breaking. From the output of
> the error it seems like the issue occurs in the mlt.f90 file in the private
> directory inside of MLT. I have been trying to diagnose the problem myself
> and I've run into a bit of a wall. Looking at the error output I think the
> output is either in how the calculation is done for dA_dvb, which produces
> NaN. This error then propagates to d_Bcubed_dvb which is calculated using
> dA_dvb. If I understand the theory correctly, the A value, a0, diff_grads
> are all non negative values. The other place where this may be going wrong
> is with the d_diff_grads_dvb value. While I have some intuition on the
> diff_grads value, I'm not sure if d_diff_grads_dvb can be negative.
> Hopefully someone has some insight on what I can do to try and fix this
> error.
>                                d_Bcubed_dvb(mlt_dgrada)
>     NaN
>                            d_diff_grads_dvb(mlt_dgrada)
> -1.0000000000000000D+00
>                                      dA_dvb(mlt_dgrada)
>     NaN
> Thanks
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