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

[Fande Kong]

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
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