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

[Anton Popov]

On 10/25/2016 01:58 PM, Anton Popov wrote:
>
>
> On 10/24/2016 10:32 PM, Barry Smith wrote:
>>     Valgrind doesn't report any problems?
>>
>
> Valgrind hangs and never returns (waited hours for a 5 sec run) after 
> entering factorization for the second time.

Before it happens it prints this (attached)

Anton



>
>>> On Oct 24, 2016, at 12:09 PM, Anton Popov <popov at uni-mainz.de> wrote:
>>>
>>>
>>>
>>> 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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