OOM Error on Archer Running UM8.4+UKCA

[pliojop]

Morning,

Since late March I have been running teh UM at version 8.4 with UKCA based on Luke Abraham's release job.

I had been initially limited to running the job in 8 hour chunks, getting 3 months & 10 days in those periods. On Friday I switched to 24 hour length jobs, as Luke had informed me that the issue that had prevented me running for more than 8 hours had been resolved.

However, both my jobs experienced a couple of OOM errors over the weekend causing them to crash out after between 13 and 15 hours.

I have resubmitted the jobs again this morning as 8 hour length jobs, and will add to the ticket if they experience an issue.

Thanks

James

[grenville]

James

This sounds like a problem we have seen with the Ceray cce8.2.1 complier - please tell us the jobid.

Grenville

[pliojop]

Hi Grenville,

Sorry, xlaya and xlayb were the job IDs!

James

[grenville]

James

If you rebuild the entire model now, you will pick up cce8.3.7 as the compiler - you won't need any special hand edits, however, you will need to ensure that the default cray-netcdf module is loaded, rather than cray-netdf/4.3.1.

If your model is running OK, there is no need to rebuild 'though.

Grenville