[MITgcm-support] Running offline example in parallel

[Neill Mackay]

Hi all,

I've overcome the problem of being unable to read the bathy.bin file by adding the following flags to my options file for genmake2:

-assume byterecl
-convert big_endian

However now I have a new problem. When I try to run the model, it crashes with the following output to standard error:

(PID.TID 0001.0001) *** ERROR ***  MDS_READ_FIELD: filename: input_off/uVeltave.0000000014 , input_off/uVeltave.0000000014.002.001.data
(PID.TID 0001.0001) *** ERROR ***  MDS_READ_FIELD: Files DO not exist

I've attached the standard out and standard error files. It searches for the files with names e.g. uVeltave.0000000014.001.001.data and finds them, as these are what I have been using when running on one processor, but then it looks for the above named files and obviously they aren't there. How is this designed to work for parallel runs?

Thanks,

Neill.

From: neill_mackay at hotmail.com
To: mitgcm-support at mitgcm.org
Date: Tue, 9 Aug 2011 16:39:10 +0100
Subject: Re: [MITgcm-support] Running offline example in parallel








Hi Joe,

The actual file is in the run directory.

Cheers,

Neill.

From: js08s at my.fsu.edu
To: mitgcm-support at mitgcm.org
Date: Tue, 9 Aug 2011 15:32:02 +0000
Subject: Re: [MITgcm-support] Running offline example in parallel









Neill,

Is your bathy.bin file located in your run directory, or do you have it linked to your run directory?



-Joe



From: Neill Mackay [neill_mackay at hotmail.com]

Sent: Tuesday, August 09, 2011 10:46 AM

To: mitgcm-support at mitgcm.org

Subject: [MITgcm-support] Running offline example in parallel






Hi all,



I'm having some difficulty setting up the offline experiment to run in parallel. I've managed to get it to compile OK, but when I run it the output (attached) ends with the following:



(PID.TID 0000.0001)  MDS_READ_FIELD: opening global file: bathy.bin



And in the output from mpi (also attached), the following message appears several times:



forrtl: severe (36): attempt to access non-existent record, unit 9, file /gpfs/env/jys10tau/MITGCM/verification/tutorial_offline/run/bathy.bin



I'm trying to run this initially on 8 processors, with a grid which is 240x30, divided up into 8 tiles of 30x30 each (see SIZE.h file attached). The bathy.bin file I'm using has a grid of 240x30 to match. I've had a good look through the manual and support
 history, and I can't work out what I'm doing wrong. Any suggestions?



Thanks,



Neill.








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