[petsc-users] Improve in speed/efficiency from partitioning in 1 direction to 3 directions

[TAY wee-beng]

On 4/9/2012 11:11 AM, Aron Ahmadia wrote:
> This doesn't strike me as a particularly large problem.  I'm not sure
> it's worth doing unless you are going to be looking at more unknowns
> in the future.
>
> A
Hi Aron,

It will increase to 500x500x1200 or more. In that case, do you think 
it's worth it?

Thanks!
>
> On Tue, Sep 4, 2012 at 10:08 AM, TAY wee-beng <zonexo at gmail.com> wrote:
>> Hi,
>>
>> My Fortran CFD code is currently partitioned in the z direction. Total grid
>> size is around is 153x248x620. Hence depending on the no. of procs, the z
>> direction 620 is partitioned. The grid size changes but the ratio is around
>> there.
>>
>> Parititoning in 3 directions was initially too complex for me. However, it
>> seems to be much simplified with the use of DM. However, there's still a lot
>> of work to be done to make it working.
>>
>> I'm wondering how much improvement in speed/efficiency will I get, if I
>> partition from 1 direction to 3 directions. Is it worth the effort?
>>
>> --
>> Yours sincerely,
>>
>> TAY wee-beng
>>