[petsc-users] KSP breakdown in specific cluster (update)

TAY wee-beng zonexo at gmail.com
Wed Apr 30 02:17:07 CDT 2014


Hi,

I switched to the GNU compiler v4.8.2 from intel and everything worked 
fine. So guess I'll have to use GNU from now on.

Thank you

Yours sincerely,

TAY wee-beng

On 24/4/2014 2:19 PM, Jed Brown wrote:
> TAY wee-beng <zonexo at gmail.com> writes:
>
>> On 24/4/2014 9:41 AM, Barry Smith wrote:
>>>     The numbers like
>>>
>>>           sum = 1.9762625833649862e-323
>>>
>>>           rho = 1.9762625833649862e-323
>>>
>>>           beta = 1.600807474747106e-316
>>>           omega = 1.6910452843641213e-315
>>>           d2 = 1.5718032521948665e-316
>>>
>>>      are nonsense. They would generally indicate that something is wrong, but unfortunately don’t point to exactly what is wrong.
>> Hi,
>>
>> In that case, how do I troubleshoot? Any suggestions?
> You have memory corruption.  Use Valgrind, perhaps compiler checks like
> -fmudflap, and location watchpoints in the debugger.



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