>
>> I wonder if the their symbolic setup is getting called every time. You do
>> 50 solves it looks like and that should be enough to amortize a one time
>> setup cost.
>>
>
> Hypre does not have concept called symbolic. They do everything from
> scratch, and won't reuse any data.
>
Really, Hypre
>
> So you could reorder your equations and see a block diagonal matrix with
>> 576 blocks. right?
>>
>
> I not sure I understand the question correctly. For each mesh vertex, we
> have a 576x576 diagonal matrix. The unknowns are ordered in this way:
> v0, v2.., v575 for vertex 1, and another 576
On Mon, Apr 15, 2019 at 2:56 PM Fande Kong wrote:
>
>
> On Mon, Apr 15, 2019 at 6:49 AM Matthew Knepley wrote:
>
>> On Mon, Apr 15, 2019 at 12:41 AM Fande Kong via petsc-dev <
>> petsc-dev@mcs.anl.gov> wrote:
>>
>>> On Fri, Apr 12, 2019 at 7:27 AM Mark Adams wrote:
>>>
On Thu, Ap
>
>
> I guess you are interested in the performance of the new algorithms on
> small problems. I will try to test a petsc example such as
> mat/examples/tests/ex96.c.
>
It's not a big deal. And the fact that they are similar on one node tells
us the kernels are similar.
>
>
>>
>> And are you su
I would suggest Fande add this new implementation into petsc. What is the
algorithm?
I'll try to see if I can further reduce memory consumption of the current
symbolic PtAP when I get time.
Hong
On Fri, Apr 12, 2019 at 8:27 AM Mark Adams via petsc-dev
mailto:petsc-dev@mcs.anl.gov>> wrote:
On
I would suggest Fande add this new implementation into petsc. What is the
algorithm?
I'll try to see if I can further reduce memory consumption of the current
implementation of symbolic PtAP when I get time.
Hong
On Fri, Apr 12, 2019 at 8:27 AM Mark Adams via petsc-dev <
petsc-dev@mcs.anl.gov> wro
On Thu, Apr 11, 2019 at 11:42 PM Smith, Barry F. wrote:
>
>
> > On Apr 11, 2019, at 9:07 PM, Mark Adams via petsc-dev <
> petsc-dev@mcs.anl.gov> wrote:
> >
> > Interesting, nice work.
> >
> > It would be interesting to get the flop counters working.
> >
> > This looks like GMG, I assume 3D.
> >
>
> On Apr 11, 2019, at 9:07 PM, Mark Adams via petsc-dev
> wrote:
>
> Interesting, nice work.
>
> It would be interesting to get the flop counters working.
>
> This looks like GMG, I assume 3D.
>
> The degree of parallelism is not very realistic. You should probably run a
> 10x smaller pro
Interesting, nice work.
It would be interesting to get the flop counters working.
This looks like GMG, I assume 3D.
The degree of parallelism is not very realistic. You should probably run a
10x smaller problem, at least, or use 10x more processes. I guess it does
not matter. This basically like
Excellent! Thanks
Barry
> On Apr 11, 2019, at 6:08 PM, Fande Kong via petsc-dev
> wrote:
>
> Hi Developers,
>
> I just want to share a good news. It is known PETSc-ptap-scalable is taking
> too much memory for some applications because it needs to build intermediate
> data structur
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