# UKESM run stopped without errors **URL:** \ **Category:** Uncategorized\ **Tags:** ARCHER2\ **Created:** [22 October 2024 10:52 UTC](https://cms-helpdesk.ncas.ac.uk/t/ukesm-run-stopped-without-errors/1541 "2024-10-22T10:52:03Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![jingjin](https://avatars.discourse-cdn.com/v4/letter/j/7ab992/32.png) [@jingjin](https://cms-helpdesk.ncas.ac.uk/u/jingjin)\ **Post date:** [22 October 2024 10:52 UTC](https://cms-helpdesk.ncas.ac.uk/t/ukesm-run-stopped-without-errors/1541/1 "2024-10-22T10:52:03Z")
Hello CMS, I was running a UKESM suite (u-dh564) on ARCHER2. The run stopped at “coupled” task in the first cycle. However, I didn’t find any error information in job.out. I’ve tried restarting the suite multiple time but ended up the same. Just wondering any ideas for things I could check? Cheers, Jing ---
**Author:** ![RosalynHatcher](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/rosalynhatcher/32/11_2.png) [@RosalynHatcher](https://cms-helpdesk.ncas.ac.uk/u/RosalynHatcher)\ **Post date:** [22 October 2024 12:53 UTC](https://cms-helpdesk.ncas.ac.uk/t/ukesm-run-stopped-without-errors/1541/2 "2024-10-22T12:53:03Z")
Hi Jing, The coupled task has core-dumped. I would suggest doing a completely clean run with `rose suite-run --new` to completely delete the cylc-run directories and start from scratch. I can see this suite has been run and got further before so it’s possible it’s got itself in a mess. Each task generates a job.out AND a job.err file. Additionally there are further ocean, ice and the atmos pe files in the /work directory that can provide further information. Regards, Ros. ---
**Author:** ![jingjin](https://avatars.discourse-cdn.com/v4/letter/j/7ab992/32.png) [@jingjin](https://cms-helpdesk.ncas.ac.uk/u/jingjin)\ **Post date:** [22 October 2024 15:53 UTC](https://cms-helpdesk.ncas.ac.uk/t/ukesm-run-stopped-without-errors/1541/3 "2024-10-22T15:53:08Z")
Hi Ros, I ran the suite with rose suite-run --new, but it still stopped with the same error. I’ve checked log files of each model component. None of them report an error. Cheers, Jing ---
**Author:** ![RosalynHatcher](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/rosalynhatcher/32/11_2.png) [@RosalynHatcher](https://cms-helpdesk.ncas.ac.uk/u/RosalynHatcher)\ **Post date:** [22 October 2024 18:48 UTC](https://cms-helpdesk.ncas.ac.uk/t/ukesm-run-stopped-without-errors/1541/4 "2024-10-22T18:48:12Z")
Hi Jing, What have you changed since the time it ran ok? Regards, Ros ---
**Author:** ![jingjin](https://avatars.discourse-cdn.com/v4/letter/j/7ab992/32.png) [@jingjin](https://cms-helpdesk.ncas.ac.uk/u/jingjin)\ **Post date:** [23 October 2024 09:53 UTC](https://cms-helpdesk.ncas.ac.uk/t/ukesm-run-stopped-without-errors/1541/5 "2024-10-23T09:53:43Z")
Hi Ros, I wanted to get it restart in 1850. I changed restart files. I have restart files named _2277_ taken from a pi-control run, so I linked these files to my working directory and renamed them as _1850_. Then I changed model basis time to 1850,1,1,0,0, and set i\_override\_date\_time=2, new\_date\_time=1850,1,1,0,0,0 in the UM namelist. The coupled task stopped in the middle of reading NEMO namelist, even before the first timestep. I have no idea what happened. Cheers, Jing ---
**Author:** ![jingjin](https://avatars.discourse-cdn.com/v4/letter/j/7ab992/32.png) [@jingjin](https://cms-helpdesk.ncas.ac.uk/u/jingjin)\ **Post date:** [28 October 2024 12:49 UTC](https://cms-helpdesk.ncas.ac.uk/t/ukesm-run-stopped-without-errors/1541/6 "2024-10-28T12:49:08Z")
Hi Ros, I’ve tried changing the restart files back to the time it ran Okay. I’ve also tried keeping the name of _2277_ restart files but changed model basis time to 2277,1,1,0,0. However, neither works. They can’t run any further and stopped with no errors. Cheers, Jing ---
**Author:** ![RosalynHatcher](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/rosalynhatcher/32/11_2.png) [@RosalynHatcher](https://cms-helpdesk.ncas.ac.uk/u/RosalynHatcher)\ **Post date:** [29 October 2024 08:31 UTC](https://cms-helpdesk.ncas.ac.uk/t/ukesm-run-stopped-without-errors/1541/7 "2024-10-29T08:31:30Z")
Hi Jing, If the suite no longer runs with the original start files then there must be something else you have changed as well. I’ve run the original job (u-de744), from 2006 start files, and it works fine for me. I suggest you start from a fresh known working version and try again. Regards, Ros. ---
**Author:** ![jingjin](https://avatars.discourse-cdn.com/v4/letter/j/7ab992/32.png) [@jingjin](https://cms-helpdesk.ncas.ac.uk/u/jingjin)\ **Post date:** [4 November 2024 10:34 UTC](https://cms-helpdesk.ncas.ac.uk/t/ukesm-run-stopped-without-errors/1541/8 "2024-11-04T10:34:38Z")
Thanks, Ros. You’re right that something must be changed. The NEMO **jphgr\_mesh** parameter was accidentally changed. After swapping it back, the suite is running Okay. Cheers, Jing