Opened 6 months ago

Closed 5 months ago

#3406 closed help (answered)

IO Server is not active

Reported by: ggxmy Owned by: um_support
Component: UM Model Keywords:
Cc: Platform: Monsoon2
UM Version: 10.7


Dear CMS,

I submitted a copy of running UM GC3.1 suite with reduced atmospheric domain decomposition and only 1 openMP thread (OMPTHR_ATM), u-bz023, but the process coupled crashed with an error;

?  Error from routine: IOS_INIT:IOS_RUN
?  Error message: IO Server is not active

Is this a temporary problem on the server or is there a problem on my side?


Change History (3)

comment:1 Changed 6 months ago by ggxmy

still waiting for help. I'm checking help for items in io server section on rose edit and also umdp_C10.pdf. These are hard for me to understand but I feel like some of the ios parameters do not conform the domain decomposition? But can I choose any possible values? Or do these need to be optimised in some way?

comment:2 Changed 6 months ago by jeff

Hi Masaru

The UM IO Server needs 2 openmp threads to run, so you either need to go back to using 2 openmp threads or turn off the IO server. To turn off the IO server set IO server Processes to 0, in the same rose edit panel you set openmp threads.


comment:3 Changed 5 months ago by ggxmy

  • Resolution set to answered
  • Status changed from new to closed

HI Jeff.,

I set IOS_NPROC=0 and my suite is running well. Thank you for your help!


Note: See TracTickets for help on using tickets.