[MITgcm-support] mpi run with cpu more than 9999

[Martin Losch]

Hi Daquan,

I have no experience with so many processors. I assume that there will be plenty of problems with order 1e4 files open (depending on your file system), but you can fix the “*****” problem by changing the definitions in eesupp/src/eeboot_minimal.F:
Look for “USE_PDAF” to see how the names of STDERR and STDOUT are changed to have longer numbers and do something similar for the default case.

Alternatively you can define SINGLE_DISK_IO, but then only process 0 (0000) will write a STDOUT/STDERR pair.

Martin

> On 10. Mar 2020, at 12:52, Daquan Guo <Daquan.Guo at kaust.edu.sa> wrote:
> 
> Dear mitgcm community and developers,
> 
> I am running a case with 16650 cpus and facing a problem. 
> It seems the files scratch.*, STDERR.* and STDOUT.* can not be written well if the number exceeds 9999, instead it generates one file named 'scratch.****', which can not be read and processed then the model crashed. 
> I am wondering if anyone has experience on this and knows how to fix it?
> Thanks in advance.
> 
> Best,
> Daquan
> 
>   
> 
> 
> 
> 
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