[MITgcm-devel] model crashes when opening scratch units

[Matthew Mazloff]

Hi Martin

Yes, I sometimes get this when running with lots of cores, so I don't think Cray_XC30 is the only platform where this is an issue.

However defining 
#define TARGET_CRAYXT
in CPP_EEOPTIONS.h
always fixes it

Matt

On Apr 16, 2015, at 8:16 AM, Martin Losch <Martin.Losch at awi.de> wrote:

> 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
> 
> 
> 
> 
> 
> 
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