[MITgcm-support] build errors for llc_1080

[Dimitris Menemenlis]

Hi Ryan, one thought is that if atmospheric forcing or oceanic state
is incompatible with initial sea ice conditions, you can have a very large
impulse on first time step as you melt a lot of ice (that would cause freshening
of surface layer but I don’t think that model would crash) or a lot of freezing,
which would destabilize the surface level.  But that does not explain why
cases 2, 3, and 7 fail.

Question: are you trying to run with latest MITgcm code, or did you
download "cvs co -r checkpoint64p MITgcm_code”
to try and match vintage of instructions and configuration?

Dimitris Menemenlis

> On Nov 29, 2016, at 1:29 PM, Ryan Abernathey <ryan.abernathey at gmail.com> wrote:
> 
> These suggestions are great (and also obvious, but only in retrospect of course!)
> 
> I also downloaded a pickup file from pleaides and tried thiat.
> 
> Here is a table of what works.
> 
> initial condition              | exf | seaice | success?
> -------------------------------|-----|--------|---------
> Jan2010_THETA_1080x14040x90_r4 |  Y  |   Y    |  N
> Jan2010_THETA_1080x14040x90_r4 |  Y  |   N    |  N
> Jan2010_THETA_1080x14040x90_r4 |  N  |   N    |  N
> uniform                        |  Y  |   Y    |  N
> uniform                        |  Y  |   N    |  Y
> uniform                        |  N  |   N    |  Y
> pickup.0000002880              |  N  |   N    |  N
> 
> 
> The only cases that work involve uniform initial conditions. With these, it works with exf enabled, but not seaice.
> 
> I thought perhaps my initial conditions files were corrupted. (Still have not done checksums, sorry.) But the test with the pickup suggests that the problem is deeper.
> 
> I will keep digging.
> 
> Thanks again for the help!
> 
> -Ryan
> 

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