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| Parameter | Units | Description |
|---|---|---|
nIter0 | 1 | Index of the first iteration. If these variables are set to nonzero values, the model will look for a ''pickup'' file |
nTimeSteps | 1 | Number of time steps that you want the MITgcm simulation to run. |
| s | The model ''clock'' timestep. This determines the IO frequencies and is used in tagging output. |
deltaTmom | s | Timestep for momentum equations. This can be set to the same value as deltaTclock. |
deltaTtracer | s | Timestep for tracer equations. This can be set to the same value as deltaTclock. |
deltaTfreesurf | s | Timestep for free surface equations. This can be set to the same value as deltaTclock. |
| s | Control the output frequency (in seconds) of permanent checkpoint files. See MITgcm manual section 1.5.1. |
| s | Control the output frequency (in seconds) of rolling checkpoint files. See MITgcm manual section 1.5.1. |
taveFreq | s | Controls the frequency (in seconds) of saving time-averaged diagnostic quantities. |
dumpFreq | s | Controls the frequency (in seconds) with which the instantaneous state of the model is saved. |
monitorFreq | s | Sets the the interval between diagnostics written out to the text stdout stream (i.e. to the terminal or the files STDOUT.*). It supplies statistics on model variables (max,mean,etc.) and also checks the CFL values. It can be quite expensive and so should not be done every time-step but perhaps every 10-50 timesteps. |
data.debug_run
The data.debug_run file is used to submit a 10-hour MITgcm simulation. The time stepping settings are as follows.
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As you can see, we set the basic timestep (deltaTclock) to 3600 seconds = 1 hour, and then run for 10 timesteps = 10 hours total. Diagnostics (taveFreq, dumpFreq, monitorFreq) are saved out at the end of the run (after 360000 seconds).
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Submitting a MITgcm debugging run
To submit a 10-hour debugging run (on 13 CPUs), type the following commands:
| Code Block |
|---|
#### To run a 10-hr debug Hg simulation ####### cd MITgcm_code/ # Switch to main code directory setcpus 13 hg # Pcks the proper SIZE.h and data.exch2 file for 13 CPUs cd verification/global_hg_llc90/run # Change to the Hg run directory sbatch run.mitgcm.13np.1month # SubmitSets the runproper todata SLURMand data.exch ####files; Tosubmits runjob a debug #### 10-hr debug PFOS simulation ####### cd MITgcm_code/ # Switch to main code directory setcpus 13 pfos # Picks the proper SIZE.h and data.exch2 file for 13 CPUs cd verification/pfos/run # Change to the HgPFOS run directory sbatch run.mitgcm.13np.1month # SubmitSets the proper data runand to SLURM #### To run adata.exch files; submits job #### 10-hr debug PCB simulation ####### cd MITgcm_code/ # Switch to main code directory setcpus 13 pcb cd verification/pfos/run # Change to the PCB run directory sbatch run.mitgcm.13np.1month # Sets the proper data and data.exch files; submits job |
Submitting a MITgcm 1-month run
To submit a 1-month MITgcm run (on 13 CPUs), type the following commands:
| Code Block |
|---|
#### 1-month Hg simulation ###
cd MITgcm_code/ # Switch to main code directory
cd verification/global_hg_llc90/run # Change to the Hg run directory
sbatch run.mitgcm.13np.1month # Sets the proper data and data.exch files; submits job
#### 1-month PFOS simulation ###
cd MITgcm_code/ # Switch to main code directory
cd verification/pfos/run # Change to the PFOS run directory
sbatch run.mitgcm.13np.1month # Sets the proper data and data.exch files; submits job
#### 1-month PCB simulation ###
cd MITgcm_code/ # Switch to main code directory
cd verification/pfos/run # Change to the PCB run directory
sbatch run.mitgcm.13np.1month # Sets the proper data and data.exch files; submits job |
Submitting a MITgcm 20 year run
To submit a 20-year MITgcm simulation (on 96 CPUs), type the following commands:
| Code Block |
|---|
#### To run a debug Hg simulation ### cd MITgcm_code/ # Switch to main code directory cd verification/global_hg_llc90/run # Change to the Hg run directory sbatch run.mitgcm.13np.1month # Sets the proper data and data.exch files; submits job #### To run a debug PFOS simulation ### cd MITgcm_code/ # Switch to main code directory cd verification/pfos/run # Change to the PFOS run directory sbatch run.mitgcm.13np.1month # Sets the proper data and data.exch files; submits job #### To run a debug PCB simulation ### cd MITgcm_code/ # Picks the proper SIZE.h and# data.exch2Switch fileto formain 13code CPUsdirectory cd verification/pfospcb/run # Change to the HgPCB run directory sbatch run.mitgcm.13np96np.1month20yr # SubmitSets the run to SLURM |
Submitting a MITgcm 1-month run
Hello
Submitting a MITgcm 20 year run
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proper data and data.exch files; submits job |
Other runs
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