[MITgcm-devel] model crashes when opening scratch units

[Martin Losch]

Hi there,

this is probably not directly related to the MITgcm, but when I try to run the model on ECMWF’s Cray_XC30, I sometimes (depends a little on the number processors) get this type of error message:

> lib-4051 : UNRECOVERABLE library error 
>   The file must not exist prior to OPEN if STATUS is 'NEW'.
> 
> Encountered during an OPEN of unit 11
> Fortran unit 11 is not connected
> 
> lib-4051 : UNRECOVERABLE library error 
>   The file must not exist prior to OPEN if STATUS is 'NEW'.
> 
> Encountered during an OPEN of unit 11
> Fortran unit 11 is not connected
> Application 56285485 is crashing. ATP analysis proceeding...
> 
> ATP Stack walkback for Rank 579 starting:
>   _start at start.S:113
>   __libc_start_main at libc-start.c:242
>   main at main.f:4353
>   eeboot_ at eeboot.f:1583
>   eeset_parms_ at eeset_parms.f:1821
>   _OPEN at 0xa3a47d
>   __OPN at 0xa3a22c
>   _f_open at 0xa380a4
>   _ferr at 0xa33d6a
>   abort at abort.c:92
>   raise at pt-raise.c:42
> ATP Stack walkback for Rank 579 done
> …

The line in eeset_parms.f is the one where the first scratch unit is opened.
      OPEN(UNIT=scrUnit1,STATUS='SCRATCH')
      OPEN(UNIT=scrUnit2,STATUS='SCRATCH’)

Has anyone had this problem? Is this a hardware bug?

Martin