[MITgcm-support] simple question on internal wave simulation

[hslee]

Hi Matthew

 

Thanks for your advice.

I figure it out the problem but have another problem. Maybe I will post more
questions after trying some. ^^

 

Regards

HanSoo

  _____  

From: mitgcm-support-bounces at mitgcm.org
[mailto:mitgcm-support-bounces at mitgcm.org] On Behalf Of Matthew Mazloff
Sent: Saturday, February 04, 2006 1:43 AM
To: mitgcm-support at mitgcm.org
Subject: Re: [MITgcm-support] simple question on internal wave simulation

 

Hi Lee

 

The "MON_SOLUTION: STOPPED DUE TO EXTREME VALUES OF SOLUTION" error just
means your model is unstable...probably because of an inappropriate CFL
number; you can look at the monitor output to see what your CFL number is.
CFL = U*dt/dx and must be < 1 (usually keep less than .5)

 

also note   dt < dx^2/viscah  and you have  dt = 60.0   and dx^2/viscah =
7e-5  so that is one reason your model is blowing up...your dt is way too
large or make viscah much bigger

 

 

good luck

matt

 

ps> I dont know about thread issue but i would try to get  a stable solution
before i worried about it

 

 

On Feb 2, 2006, at 9:20 PM, hslee wrote:





Hi MITgcm users

 

I am a quite beginner of MITgcm and just set up for my system(Linux's
cluster with ifort, mpi and mnc package => works fine) and tested examples
in verification.

After this, I am trying to apply to my interested area for internal wave
simulation.

Then, I have error a message shown below which I couldn't figure it out.

Could anybody give me a clue what's wrong with my simulation?

I attached data file of this simulation

----------------------------------------------------------------------------
-----------------------------------------------------------------

SOLUTION IS HEADING OUT OF BOUNDS: tMin, tMax= -2.172+280   1.363.294

MON_SOLUTION: STOPPING CALCULATION

 S/R EEDIE: Only     0 threads have completed,    1 are expected for this
configuration!

 

 

Possibly you have different setenv PARALLEL and nThreads?

MON_SOLUTION: STOPPED DUE TO EXTREME VALUES OF SOLUTION

 

Thanks in advance.

 

Lee HanSoo

 

Ph.D student,

RCFCD, DPRI, Kyoto University,

Kyoto, Japan, 611-0011

Email: hslee at rcde.dpri.kyoto-u.ac.jp

TEL : 81-(0)774-38-4309

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