[petsc-users] Question about PetscViewerHDF5SetTimestep usage

[Matthew Knepley]

Please send a minimal reproducer if possible.

  Thanks,

    Matt

On Thu, Dec 20, 2018 at 1:27 PM Sajid Ali <sajidsyed2021 at u.northwestern.edu>
wrote:

> This error persists after updating petsc to 3.10.3.
>
> On Fri, Dec 14, 2018 at 4:17 PM Matthew Knepley <knepley at gmail.com> wrote:
>
>> I think this was the last commit
>> (5eab803f81ff61e3e81a6486d2410623a017e36d) in the branch,
>> but just using the current master should work.
>>
>>   Matt
>>
>> On Fri, Dec 14, 2018 at 4:04 PM Sajid Ali <
>> sajidsyed2021 at u.northwestern.edu> wrote:
>>
>>> Hi Matthew,
>>>
>>> Thanks for the info. Could you give a specific commit that I should
>>> rebuild PETSc with ? I’m currently building with commit=83593104eb216a023c00ab8a3f9897d55e531412'.
>>>
>>>
>>> On Fri, Dec 14, 2018 at 12:56 PM Matthew Knepley <knepley at gmail.com>
>>> wrote:
>>>
>>>> I believe this is now fixed in 'master', It was a bug in HDF5 attribute
>>>> creation.
>>>>
>>>>   Thanks,
>>>>
>>>>     Matt
>>>>
>>>> On Fri, Dec 14, 2018 at 1:16 PM Sajid Ali via petsc-users <
>>>> petsc-users at mcs.anl.gov> wrote:
>>>>
>>>>> Hi,
>>>>>
>>>>> I have a question about PetscViewerHDF5SetTimestep usage.
>>>>>
>>>>> I have tried the following minimal example which tries to write a
>>>>> vector twice to an hdf5 file and it fails with the error message shown
>>>>> below.
>>>>>
>>>>> Example : https://pastebin.com/cAeZsUgA
>>>>>
>>>>> Error :
>>>>>
>>>>> writing vector in hdf5 to vector.dat ...
>>>>> HDF5-DIAG: Error detected in HDF5 (1.10.4) MPI-process 0:
>>>>>   #000: H5A.c line 279 in H5Acreate2(): unable to create attribute
>>>>>     major: Attribute
>>>>>     minor: Unable to initialize object
>>>>>   #001: H5Aint.c line 323 in H5A__create(): unable to create attribute
>>>>>     major: Attribute
>>>>>     minor: Unable to create file
>>>>>   #002: H5Aint.c line 167 in H5A__create_common(): attribute already
>>>>> exists
>>>>>     major: Attribute
>>>>>     minor: Object already exists
>>>>> [0]PETSC ERROR: --------------------- Error Message
>>>>> --------------------------------------------------------------
>>>>> [0]PETSC ERROR: Error in external library
>>>>> [0]PETSC ERROR: Error in HDF5 call H5Acreate2() Status -1
>>>>> [0]PETSC ERROR: See
>>>>> http://www.mcs.anl.gov/petsc/documentation/faq.html for trouble
>>>>> shooting.
>>>>> [0]PETSC ERROR: Petsc Release Version 3.10.2, unknown
>>>>>
>>>>>
>>>>> The error is related to the second VecView after setting the timestep
>>>>> to 1. Am i doing something wrong ?
>>>>>
>>>>> Thank You,
>>>>> Sajid Ali
>>>>> Applied Physics
>>>>> Northwestern University
>>>>>
>>>>
>>>>
>>>> --
>>>> What most experimenters take for granted before they begin their
>>>> experiments is infinitely more interesting than any results to which their
>>>> experiments lead.
>>>> -- Norbert Wiener
>>>>
>>>> https://www.cse.buffalo.edu/~knepley/
>>>> <http://www.cse.buffalo.edu/~knepley/>
>>>>
>>>
>>>
>>> --
>>> Sajid Ali
>>> Applied Physics
>>> Northwestern University
>>>
>>
>>
>> --
>> What most experimenters take for granted before they begin their
>> experiments is infinitely more interesting than any results to which their
>> experiments lead.
>> -- Norbert Wiener
>>
>> https://www.cse.buffalo.edu/~knepley/
>> <http://www.cse.buffalo.edu/~knepley/>
>>
>
>
> --
> Sajid Ali
> Applied Physics
> Northwestern University
>


-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener

https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>
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