[petsc-users] SuperLU_dist bug with parallel symbolic factorisation

[Eric Chamberland]

On 22/05/18 02:03 PM, Smith, Barry F. wrote:
> 
>     Hmm, why would
> 
>> the resolution with *sequential* symbolic factorisation gives ans err around 1e-6 instead of 1e-16 for parallel one (when it works).
> 
>    ? One would think that doing a "sequential" symbolic factorization won't affect the answer to this huge amount? Perhaps this is the problem that needs to be addressed.
> 

I do agree that this is a huge amount of difference... and if we agree 
this is also a bug, than it means there are not one but two bugs that 
deserve to be fixed...

Thanks,

Eric