# Failure in postproc\_nemo

**URL:** <https://cms-helpdesk.ncas.ac.uk/t/failure-in-postproc-nemo/595>\
**Category:** Unified Model\
**Tags:** ARCHER2, PUMATest\
**Created:** [25 May 2022 10:09 UTC](https://cms-helpdesk.ncas.ac.uk/t/failure-in-postproc-nemo/595 "2022-05-25T10:09:37Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![racheldiamond](https://avatars.discourse-cdn.com/v4/letter/r/eb9ed0/32.png) [@racheldiamond](https://cms-helpdesk.ncas.ac.uk/u/racheldiamond)\
**Post date:** [25 May 2022 10:09 UTC](https://cms-helpdesk.ncas.ac.uk/t/failure-in-postproc-nemo/595/1 "2022-05-25T10:09:37Z")

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Dear NCAS helpdesk,

My suite u-cn949 failed yesterday at task 20230801T0000Z postproc\_nemo.  
cylc-run/u-cn949/share/data/History\_Data/NEMOhist/archive\_ready contains all the files I expect (the same file types as /work/n02/n02/radiam24/archive/u-cn949/20220801T0000Z/nemo\_cn949o\*). Am I ok to manually transfer everything from archive\_ready to the archive, set postproc\_nemo to succeeded, and continue running the suite? Or is there likely a bigger issue here.

In cylc-run/u-cn949/log/job/20230801T0000Z/postproc\_nemo/02/job.err:

[WARN] [SUBPROCESS]: Command: ncdump -hs /work/n02/n02/radiam24/cylc-run/u-cn949/share/data/History\_Data/NEMOhist/archive\_ready/nemo\_cn949o\_1m\_20230801-20230  
901\_grid-U.nc  
[SUBPROCESS]: Error = 1:  
ncdump: /work/n02/n02/radiam24/cylc-run/u-cn949/share/data/History\_Data/NEMOhist/archive\_ready/nemo\_cn949o\_1m\_20230801-20230901\_grid-U.nc: /work/n02/n  
02/radiam24/cylc-run/u-cn949/share/data/History\_Data/NEMOhist/archive\_ready/nemo\_cn949o\_1m\_20230801-20230901\_grid-U.nc: NetCDF: HDF error

[ERROR] ncdump: Command failed:  
ncdump: /work/n02/n02/radiam24/cylc-run/u-cn949/share/data/History\_Data/NEMOhist/archive\_ready/nemo\_cn949o\_1m\_20230801-20230901\_grid-U.nc: /work/n02/n02/radia  
m24/cylc-run/u-cn949/share/data/History\_Data/NEMOhist/archive\_ready/nemo\_cn949o\_1m\_20230801-20230901\_grid-U.nc: NetCDF: HDF error

[FAIL] Command Terminated  
[FAIL] Terminating PostProc…  
[FAIL] main\_pp.py nemo \<\<‘ **STDIN** ’  
[FAIL]  
[FAIL] ‘ **STDIN** ’ # return-code=1  
2022-05-24T16:39:50Z CRITICAL - failed/EXIT

Also - u-cm087 failed at the same time in 19421101T0000Z: postproc\_nemo with a very similar error.

Best wishes,

Rachel

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**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:** [25 May 2022 14:14 UTC](https://cms-helpdesk.ncas.ac.uk/t/failure-in-postproc-nemo/595/3 "2022-05-25T14:14:36Z")

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Hi Rachel,

I’m not sure what’s happened, the postproc had problems doing the nccopy at the first attempt. It looks to me like the `nemo_cn949o_1m_20230801-20230901_grid-U.nc` is corrupted - it’s only 96MB and I’d expect it to be 111MB - I get errors trying to read it with multiple tools.

Cheers,  
Ros.

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**Author:** ![racheldiamond](https://avatars.discourse-cdn.com/v4/letter/r/eb9ed0/32.png) [@racheldiamond](https://cms-helpdesk.ncas.ac.uk/u/racheldiamond)\
**Post date:** [25 May 2022 14:35 UTC](https://cms-helpdesk.ncas.ac.uk/t/failure-in-postproc-nemo/595/4 "2022-05-25T14:35:36Z")

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Hi,

Thanks, I’ll restart the model from that step to regenerate those files.

Best wishes,

Rachel

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**Author:** ![system](https://europe1.discourse-cdn.com/flex013/uploads/cms_support/original/1X/1fd2411499ffcbc299fe756cd5cdf26e44956558.png) [@system](https://cms-helpdesk.ncas.ac.uk/u/system)\
**Post date:** [31 October 2023 08:21 UTC](https://cms-helpdesk.ncas.ac.uk/t/failure-in-postproc-nemo/595/5 "2023-10-31T08:21:32Z")

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**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:** [2 November 2023 22:24 UTC](https://cms-helpdesk.ncas.ac.uk/t/failure-in-postproc-nemo/595/6 "2023-11-02T22:24:19Z")

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