[petsc-users] SuperLU_dist issue in 3.7.4 failure of repeated calls to MatLoad() or MatMPIAIJSetPreallocation() with the same matrix

[Hong]

 Anton :
If replacing superlu_dist with mumps, does your code work?
Hong
>
> On 10/24/2016 05:47 PM, Hong wrote:
>
> Barry,
> Your change indeed fixed the error of his testing code.
> As Satish tested, on your branch, ex16 runs smooth.
>
> I do not understand why on maint or master branch, ex16 creases inside
> superlu_dist, but not with mumps.
>
>
> I also confirm that ex16 runs fine with latest fix, but unfortunately not
> my code.
>
> This is something to be expected, since my code preallocates once in the
> beginning. So there is no way it can be affected by multiple
> preallocations. Subsequently I only do matrix assembly, that makes sure
> structure doesn't change (set to get error otherwise).
>
> Summary: we don't have a simple test code to debug superlu issue anymore.
>
> Anton
>
> Hong
>
> On Mon, Oct 24, 2016 at 9:34 AM, Satish Balay <balay at mcs.anl.gov> wrote:
>
>> On Mon, 24 Oct 2016, Barry Smith wrote:
>>
>> >
>> > > [Or perhaps Hong is using a different test code and is observing bugs
>> > > with superlu_dist interface..]
>> >
>> >    She states that her test does a NEW MatCreate() for each matrix load
>> (I cut and pasted it in the email I just sent). The bug I fixed was only
>> related to using the SAME matrix from one MatLoad() in another MatLoad().
>>
>> Ah - ok.. Sorry - wasn't thinking clearly :(
>>
>> Satish
>>
>
>
>
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