[MITgcm-support] STDOUT redirect in parallel

[Neil Swart]

Thanks Martin,

Running everything from /scratch seems like the way to go.

Cheers,
Neil

---------------------------------------------------
Neil Swart

Climate Modelling Group
School of Earth and Ocean Sciences
University of Victoria
Victoria, BC
Canada

http://climate.uvic.ca/

On Mar 24, 2011, at 1:21 AM, Martin Losch wrote:

> Hi Neil,
> 
> this is what I do in such a case:
> 
> I copy forcing etc to the /scratch directory and run the model there. Then you'll have all I/O on that disk. This also works for distributed resources, by default the model writes to the local directory (useSingleCPUio=.false., and globalFiles=.false.)
> 
> You can also turn off most of the output to STDOUT by using the mnc package for the monitor output (monitor_mnc = .true. in data.mnc), and debugLevel = -1 (in data&PARM01), then you'll only get output in STDOUT at the beginning and the end.
> 
> Martin
> 
> On Mar 23, 2011, at 11:12 PM, Neil Swart wrote:
> 
>> Hi folks,
>> 
>> I run MITgcm in parallel on a server using the TORQUE resource manager and MOAB scheduler. The gpfs disks on the system really slow down the model if it writes to them - so I need to redirect everything to a local /scratch disk.
>> 
>> I use mnc for monitor, and I can easily redirect all the mnc output by specifying: mnc_outdir_str='/scratch/mnc' in data.mnc. 
>> 
>> I'm wondering if there is there is a similarly easy run time way to redirect the STDOUT & STDERR streams to /scratch - (other than by editing eeboot_minimal.F) ?
>> 
>> This is probably obvious and I just don't see it.
>> 
>> Thanks,
>> Neil
>> ---------------------------------------------------
>> Neil Swart
>> 
>> Climate Modelling Group
>> School of Earth and Ocean Sciences
>> University of Victoria
>> Victoria, BC
>> Canada
>> 
>> http://climate.uvic.ca/
>> 
>> 
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> 
> 
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