[Nek5000-users] Nek: abnormal termination by signal 11

[nek5000-users at lists.mcs.anl.gov]

Hello,
I typically work with a single precision restart file. lx1 is typically reduced from 12 to 10 or from 10 to 8.
However, it seems that the error was eliminated in the newest release? I just tried to reproduce the error and it did not occur with the newest master from github, only with an older version.
Jan

> Am 15.03.2017 um 13:55 schrieb nek5000-users at lists.mcs.anl.gov:
> 
> When you do a restart and it hangs, what's your old and new lx1? Is this a single or double precision field file?
> 
> 
> -----Original message-----
>> From:nek5000-users at lists.mcs.anl.gov <nek5000-users at lists.mcs.anl.gov>
>> Sent: Friday 10th March 2017 17:52
>> To: nek5000-users at lists.mcs.anl.gov
>> Subject: Re: [Nek5000-users] Nek: abnormal termination by signal 11
>> 
>> Jan,
>> 
>> Memory layout on different architectures is different...
>> 
>> There is some sort of memory issue in the restart process under the scenario
>> you described --- it is entirely my fault --- but I've not been able to readily track it down.
>> Given that this situation does not often arise and that we have a standard fix, I've
>> focused on other issues, but I apologize for causing you to lose time on this.
>> 
>> Paul
>> 
>> ________________________________________
>> From: nek5000-users-bounces at lists.mcs.anl.gov [nek5000-users-bounces at lists.mcs.anl.gov] on behalf of nek5000-users at lists.mcs.anl.gov [nek5000-users at lists.mcs.anl.gov]
>> Sent: Friday, March 10, 2017 8:39 AM
>> To: nek5000-users at lists.mcs.anl.gov
>> Subject: Re: [Nek5000-users] Nek: abnormal termination by signal 11
>> 
>> Hi Stefan and Paul,
>> I just made a short test and it seems Pauls advice actually helped. I increased lelt so that the total memory available  stayed the same and the run started fine.
>> This was with a single restart file with MPIIO on the IBM big endian system, but I think  I also had some restart files created on Intel.
>> I will look into the memory footprint and the new master next week.
>> Any idea why this only happens on IBM?
>> Many thanks for the advice,
>> Jan
>>> 
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