# Archer2 IOServer crashes suite \[Unable to find specified unit ( 11) in list (portio) \]
**URL:** https://cms-helpdesk.ncas.ac.uk/t/archer2-ioserver-crashes-suite-unable-to-find-specified-unit-11-in-list-portio/873
**Category:** Unified Model
**Tags:** ARCHER2, Nesting-Suite
**Created:** [23 January 2023 10:53 UTC](https://cms-helpdesk.ncas.ac.uk/t/archer2-ioserver-crashes-suite-unable-to-find-specified-unit-11-in-list-portio/873 "2023-01-23T10:53:52Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@markr](https://cms-helpdesk.ncas.ac.uk/u/markr)
#### Post date: [23 January 2023 10:53 UTC](https://cms-helpdesk.ncas.ac.uk/t/archer2-ioserver-crashes-suite-unable-to-find-specified-unit-11-in-list-portio/873/1 "2023-01-23T10:53:53Z")
hello,
I have tried to configure this suite: u-ct529 with IOServers.
I modified the site config file (ala kscale technique) and was able to see 8 servers start with last 8 of MPI tasks (120-127).
Unfortunately it very quickly fails as indicated by portio. which I think is ATMOSCNTL.
/work/n02/n02/mricha/cylc-run/u-ct529/work/20151129T0000Z/TM\_4km\_RA3\_p3\_um\_fcst\_000
(I think you should be able to see it as sticky-bit is modding permissions)
I modified the suite to run the 1st level nest of terramaris for 3hours simtime.
many thanks for any advice,
Mark
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### Author:  [@markr](https://cms-helpdesk.ncas.ac.uk/u/markr)
#### Post date: [23 January 2023 11:30 UTC](https://cms-helpdesk.ncas.ac.uk/t/archer2-ioserver-crashes-suite-unable-to-find-specified-unit-11-in-list-portio/873/2 "2023-01-23T11:30:46Z")
Having looked at the pe0 outptut I see the FILE\_MANAGER assigns unit 11 as and when it needs. so the last assignemtn before cras is:
/work/n02/n02/mricha/cylc-run/u-ct529/share/cycle/20151129T0000Z/TM/4km/RA3\_p3/um//model-variables-3D\_%AY%Am%AdT%AH%AM\_T+%RH.nc
there is a file: model-variables-3D\_20151129T0000\_T+00.nc
but no other pattern matched.
Still unclear,
Mark
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### Author:  [@system](https://cms-helpdesk.ncas.ac.uk/u/system)
#### Post date: [24 November 2023 15:31 UTC](https://cms-helpdesk.ncas.ac.uk/t/archer2-ioserver-crashes-suite-unable-to-find-specified-unit-11-in-list-portio/873/3 "2023-11-24T15:31:57Z")
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### Author:  [@system](https://cms-helpdesk.ncas.ac.uk/u/system)
#### Post date: [23 December 2023 22:31 UTC](https://cms-helpdesk.ncas.ac.uk/t/archer2-ioserver-crashes-suite-unable-to-find-specified-unit-11-in-list-portio/873/4 "2023-12-23T22:31:32Z")
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### Author:  [@system](https://cms-helpdesk.ncas.ac.uk/u/system)
#### Post date: [11 January 2024 15:52 UTC](https://cms-helpdesk.ncas.ac.uk/t/archer2-ioserver-crashes-suite-unable-to-find-specified-unit-11-in-list-portio/873/5 "2024-01-11T15:52:38Z")
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### Author:  [@system](https://cms-helpdesk.ncas.ac.uk/u/system)
#### Post date: [27 January 2024 19:42 UTC](https://cms-helpdesk.ncas.ac.uk/t/archer2-ioserver-crashes-suite-unable-to-find-specified-unit-11-in-list-portio/873/6 "2024-01-27T19:42:18Z")
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### Author:  [@system](https://cms-helpdesk.ncas.ac.uk/u/system)
#### Post date: [15 February 2024 12:27 UTC](https://cms-helpdesk.ncas.ac.uk/t/archer2-ioserver-crashes-suite-unable-to-find-specified-unit-11-in-list-portio/873/7 "2024-02-15T12:27:24Z")
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### Author:  [@RosalynHatcher](https://cms-helpdesk.ncas.ac.uk/u/RosalynHatcher)
#### Post date: [19 February 2024 14:35 UTC](https://cms-helpdesk.ncas.ac.uk/t/archer2-ioserver-crashes-suite-unable-to-find-specified-unit-11-in-list-portio/873/8 "2024-02-19T14:35:31Z")