[petsc-users] IS natural numbering to global numbering

[YuSh Lo]

Hi Barry,

Is there any way to use the mapping generated by DMPlexDistribute along
with AO?

Thanks,
Josh


Barry Smith <bsmith at petsc.dev> 於 2023年6月9日 週五 上午10:42寫道：

>
>   You might be looking for https://petsc.org/release/manualpages/AO/AO/#ao
>
>
> On Jun 9, 2023, at 11:02 AM, Mark Adams <mfadams at lbl.gov> wrote:
>
> An IS is just an array of integers. We need your context.
> Is this question for sparse matrices? If so look at the documentation on
> the AIJ matrix construction and the global vertex numbering system.
>
> Mark
>
> On Thu, Jun 8, 2023 at 1:15 PM YuSh Lo <ysjosh.lo at gmail.com> wrote:
>
>> Hi,
>>
>> I have an IS that contains some vertex that is in natural numbering. How
>> do I map them to global numbering without being distributed?
>>
>> Thanks,
>> Josh
>>
>
>
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