[Nek5000-users] seg fault

nek5000-users at lists.mcs.anl.gov nek5000-users at lists.mcs.anl.gov
Thu Mar 25 17:29:35 CDT 2010


Hi David,

We're looking into this...

Paul

On Wed, 24 Mar 2010, David Goluskin wrote:

> Hi Paul and Aleks,
>
> After running "makenek clean" before building, the new version of nek still
> seg fault.  I'll use version 417 of nek for now.
>
> David
>
> On Wed, Mar 24, 2010 at 9:31 AM, Paul Fischer <fischer at mcs.anl.gov> wrote:
>
>>
>>
>> Thanks David -- sorry to run you through the debug process remotely,
>> but just trying to isolate the variables and don't have access at the
>> moment to a similar platform (Aleks does and he's also on top of this).
>>
>> The nice thing is is that we having a rapidly growing user group ( > 60
>> at the moment) so that bug identification happens rapidly.
>>
>> It's important to rebuild with the current makenek after each svn
>> update, e.g.,   makenek clean; makenek my_case
>>
>> The reason is that the .o files may have different memory layouts from
>> one version to the next and there are then memory issues when the
>> different versions get linked together.   Not certain that's the case
>> here, but a seg-fault is often indicative of such.
>>
>> Hope this fixes it!
>>
>>
>> Paul
>>
>>
>



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