[petsc-users] Are there any functions (objects ) for scattering and gathering 64-bit integers just like VecScatter for PetscScalar?

[Fande Kong]

Thank you very much. I don't want to use one-sided communication. It's
horrible with countless bugs in current mpi implementations.

On Fri, Nov 2, 2012 at 4:41 PM, Jed Brown <jedbrown at mcs.anl.gov> wrote:

> Read the issue I linked. You can watch it to be notified of action. It
> should be obvious that I've known about the Open MPI problem for a long
> time. You can also ask them to fix their bug. They _should_ fix it
> regardless.
> On Nov 2, 2012 5:24 PM, "Fande Kong" <fd.kong at siat.ac.cn> wrote:
>
>> I got it. You still didn't fix the bugs that I encountered a few months
>> ago. All current MPI implementations couldn't support the function
>> MPI_Accumulate or others well with one-sided communication when data is
>> large.  Thus, I have to hack your code (PetscSF) to use point-point
>> communications. But  I find it's not so easy.
>>
>> don't you want to change to use point-point?
>>
>> On Fri, Nov 2, 2012 at 4:04 PM, Jed Brown <jedbrown at mcs.anl.gov> wrote:
>>
>>> The current implementation uses one-sided because that was a natural. I
>>> need a solid day to implement without one-sided. As stated in the issue I
>>> posted, this is necessary because Open MPI data types are broken.
>>>
>>>
>>> On Fri, Nov 2, 2012 at 5:01 PM, Fande Kong <fd.kong at siat.ac.cn> wrote:
>>>
>>>> did you remove horrible one-side communication? and did you make some
>>>> tests with using 64-bit integers?
>>>>
>>>>
>>>> On Fri, Nov 2, 2012 at 3:50 PM, Jed Brown <jedbrown at mcs.anl.gov> wrote:
>>>>
>>>>> I am using PetscSF for this. You would need petsc-dev and the current
>>>>> implementation requires an MPI with non-broken data types.
>>>>>
>>>>>
>>>>> https://bitbucket.org/petsc/petsc-dev/issue/9/implement-petscsf-without-one-sided
>>>>>
>>>>> Here are some (dated) notes about the communication model.
>>>>> http://59A2.org/files/StarForest.pdf
>>>>>
>>>>>
>>>>> On Fri, Nov 2, 2012 at 4:41 PM, Fande Kong <fd.kong at siat.ac.cn> wrote:
>>>>>
>>>>>> Hi all,
>>>>>>
>>>>>> Are there any functions (objects ) for scattering and gathering
>>>>>> 64-bit integers just like VecScatter for PetscScalar? The VecScatter is
>>>>>> very useful for managing communication for PetscScalar. But I can't find
>>>>>> any functions or objects to do similar things for PetscInt. Any suggestions?
>>>>>>
>>>>>> Regards,
>>>>>> --
>>>>>> Fande Kong
>>>>>> ShenZhen Institutes of Advanced Technology
>>>>>> Chinese Academy of Sciences
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Fande Kong
>>>> ShenZhen Institutes of Advanced Technology
>>>> Chinese Academy of Sciences
>>>>
>>>>
>>>
>>
>>
>> --
>> Fande Kong
>> ShenZhen Institutes of Advanced Technology
>> Chinese Academy of Sciences
>>
>>


-- 
Fande Kong
ShenZhen Institutes of Advanced Technology
Chinese Academy of Sciences
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