Archer2 IOServer crashes suite [Unable to find specified unit ( 11) in list (portio) ]

Unified Model
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1

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

2

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