[petsc-dev] [issue1595] Issues of limited number of MPI communicators when having many instances of hypre boomerAMG with Moose 49d13fee5f3a3720

[Matthew Knepley]

I have to be registered. I believe  there is also a suitcoat requirement
for the Hypre list.

   Matt

On Tue, Apr 3, 2018 at 6:03 PM, Matthew Knepley <knepley at gmail.com> wrote:

> On Tue, Apr 3, 2018 at 6:02 PM, Rob Falgout hypre Tracker <
> hypre-support at llnl.gov> wrote:
>
>>
>> Rob Falgout <rfalgout at llnl.gov> added the comment:
>>
>> In my opinion, if the user is doing something simultaneously with a hypre
>> solve (not the typical case, I think), then they should be responsible for
>> ensuring that the communicators don't conflict.  It will also be easier to
>> control the number of communicators used in those situations where there
>> are limits.
>>
>
> That seems like a solipsistic way to operate, and it does not scale very
> well. Substitute "other library" for "user" in
> what you said. Now all libraries but Hypre must protect themselves from
> Hypre messages. Why is Hypre special?
> Doesn't it seem like you guys should segregate your messages into a
> different space?
>
>    Matt
>
>
>> Just my 2 cents.
>>
>> -Rob
>>
>> ____________________________________________
>> hypre Issue Tracker <hypre-support at llnl.gov>
>> <http://cascb1.llnl.gov/hypre/issue1595>
>> ____________________________________________
>>
>
>
>
> --
> 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.caam.rice.edu/~mk51/>
>



-- 
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.caam.rice.edu/~mk51/>
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