# ACCESS-CM2 error codes (error 22)
**URL:** https://forum.access-hive.org.au/t/access-cm2-error-codes-error-22/1018
**Category:** Coupled Model
**Tags:** access-cm2, error
**Created:** [24 July 2023 00:27 UTC](https://forum.access-hive.org.au/t/access-cm2-error-codes-error-22/1018 "2023-07-24T00:27:27Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@sebmckenna](https://forum.access-hive.org.au/u/sebmckenna)
#### Post date: [24 July 2023 00:27 UTC](https://forum.access-hive.org.au/t/access-cm2-error-codes-error-22/1018/1 "2023-07-24T00:27:27Z")
Hi,
I was wondering if there is somewhere I can see what different error codes mean?
I have had a job stop over the weekend due to an error, but I don’t really know what caused it. This is from a pacemaker style simulation using Holgers setup to change the SST restoring file each year. Im not sure why the job would fail now, it has been running for 24 years fine before this.
Here is the error message below from job.out:
```auto
????????????????????????????????????????????????????????????????????????????????
???!!!???!!!???!!!???!!!???!!! ERROR ???!!!???!!!???!!!???!!!???!!!
? Error code: 22
? Error from routine: io:buffin
? Error message: Error in buffin errorCode= 1.00 len=0/28672
? Error from processor: 0
? Error number: 14
????????????????????????????????????????????????????????????????????????????????
```
Let me know how I can fix this, or if should just restart the cycle and see if it works?
Here is some of the other lines prior to the job giving the error message if that helps:
```auto
MPPIO: file op completed
REPLANCA: UPDATE REQUIRED FOR FIELD 1
Information used in checking ancillary data set: position of lookup table in dataset: 681
Position of first lookup table referring to data type 1
Interval between lookup tables referring to data type 85 Number of steps 8
STASH code in dataset 60 STASH code requested 60
'start' position of lookup tables for dataset 1 in overall lookup array 1
BUFFIN: C I/O Error - Return code = 1
******************IO Error Report***********************************
Unit Generating error= 15
---File States --------------------------
Unit 11 open on filename /home/561/sm2435/cylc-run/u-cy286/work/09760101/coupled/ATM_RUNDIR/History_Data/cy286a.p70976aug
--> File Type: 2 , Read Only: F , Write Only: F
--> Local: T AllLocal: F Remote: F Broadcast: T
--> Local: T AllLocal: F Remote: F Broadcast: T
Unit 12 open on filename /home/561/sm2435/cylc-run/u-cy286/work/09760101/coupled/ATM_RUNDIR/History_Data/cy286a.p80976aug
--> File Type: 2 , Read Only: F , Write Only: F
--> Local: T AllLocal: F Remote: F Broadcast: T
--> Local: T AllLocal: F Remote: F Broadcast: T
Unit 13 open on filename /home/561/sm2435/cylc-run/u-cy286/work/09760101/coupled/ATM_RUNDIR/History_Data/cy286a.pd0976aug
--> File Type: 2 , Read Only: F , Write Only: F
--> Local: T AllLocal: F Remote: F Broadcast: T
--> Local: T AllLocal: F Remote: F Broadcast: T
Unit 15 open on filename /g/data/access/TIDS/CMIP6_ANCIL/data/ancils/n96e/timeslice_1850/OzoneConc/v1/mmro3_monthly_CMIP6_1850_N96_edited-ancil_2anc
--> File Type: 1 , Read Only: T , Write Only: F
--> Local: T AllLocal: F Remote: F Broadcast: F
--> Local: T AllLocal: F Remote: F Broadcast: F
Unit 16 open on filename /g/data/access/projects/access/umdir/ancil/atmos/n96e/orca1/general_sea/GlobColour/v0/qrclim.sea
--> File Type: 1 , Read Only: T , Write Only: F
--> Local: T AllLocal: F Remote: F Broadcast: T
--> Local: T AllLocal: F Remote: F Broadcast: T
Unit 17 open on filename /projects/access/data/ancil/access_cm2_n96e/O1/cable_vegfunc_ncarlai.anc
--> File Type: 1 , Read Only: T , Write Only: F
--> Local: T AllLocal: F Remote: F Broadcast: T
--> Local: T AllLocal: F Remote: F Broadcast: T
Unit 18 open on filename /g/data/access/projects/access/data/ancil/access_cm2_n96e/O1/qrclim.sulpdms
--> File Type: 1 , Read Only: T , Write Only: F
--> Local: T AllLocal: F Remote: F Broadcast: T
--> Local: T AllLocal: F Remote: F Broadcast: T
---End File States ----------------------
```
---
### Author:  [@Aidan](https://forum.access-hive.org.au/u/Aidan)
#### Post date: [24 July 2023 07:14 UTC](https://forum.access-hive.org.au/t/access-cm2-error-codes-error-22/1018/2 "2023-07-24T07:14:45Z")
> [@sebmckenna](#):
>
> `Error from routine: io:buffin`
It’s maybe not directly relevant, but I searched for that term and came up with this thread from the NCAS Modelling Support forum:
> **[BUFFIN: Read Failed](https://cms-helpdesk.ncas.ac.uk/t/buffin-read-failed/592)**
>
> Dear NCAS helpdesk, My suite u-ck767 keeps failing near the end of the coupled task for 19071101T0000Z with error in cylc-run/u-ck767/log/job/19071101T0000Z/coupled/04/job.err: BUFFIN: Read Failed: Cannot allocate memory \[1\] \[1\] ??? \[1\]...
which might provide some clues with _how_ to debug this.
---
### Author:  [@Scott](https://forum.access-hive.org.au/u/Scott)
#### Post date: [24 July 2023 23:39 UTC](https://forum.access-hive.org.au/t/access-cm2-error-codes-error-22/1018/3 "2023-07-24T23:39:22Z")
Possibly the current date of the model is beyond the data in the ancillary file. Historical experiment ancillaries run to 2015ish.
Stash 60 is ozone - matches up with unit 15 being the error file
```auto
STASH code in dataset 60 STASH code requested 60
# ...
Unit Generating error= 15
# ...
Unit 15 open on filename /g/data/access/TIDS/CMIP6_ANCIL/data/ancils/n96e/timeslice_1850/OzoneConc/v1/mmro3_monthly_CMIP6_1850_N96_edited-ancil_2anc
```
though this is a climatology (periodic 12 months of data) so it won’t be that dates have gone wrong.
I’d say retry and see if it reproduces at the same time.
---
### Author:  [@sebmckenna](https://forum.access-hive.org.au/u/sebmckenna)
#### Post date: [24 July 2023 23:50 UTC](https://forum.access-hive.org.au/t/access-cm2-error-codes-error-22/1018/4 "2023-07-24T23:50:57Z")
Thanks @Aidan and @Scott
I have restarted and will see what happens.
Yeah error suggests it is not reading that file properly, but file does exist so not sure why it fails now. I will let you know if restarting fixes the problem or not
Thanks,
Sebastian
---
### Author:  [@Aidan](https://forum.access-hive.org.au/u/Aidan)
#### Post date: [25 July 2023 00:39 UTC](https://forum.access-hive.org.au/t/access-cm2-error-codes-error-22/1018/5 "2023-07-25T00:39:23Z")
I note that this reply talks about “switching on extra diagnostics messages”
> **[BUFFIN: Read Failed](https://cms-helpdesk.ncas.ac.uk/t/buffin-read-failed/592/2)**
>
> Rachel Please switch on Extra diagnostic messages & run again - perhaps that will tell us which file is causing the problem. (memory and disk are different things in this context) Grenville
Is that something that is available in this suite? If so, is this a standard measure we should always suggested when debugging?
---
### Author:  [@sebmckenna](https://forum.access-hive.org.au/u/sebmckenna)
#### Post date: [25 July 2023 23:57 UTC](https://forum.access-hive.org.au/t/access-cm2-error-codes-error-22/1018/6 "2023-07-25T23:57:22Z")
Restarting the job seems to have fixed it and the model is continuing to run with no issue now.
Unsure what caused this to happen, but it appears to have fixed itself in this case.
@Aidan I couldn’t find any options for extra diagnostics when I had a look.