[petsc-users] SUPERLU_DIST in single precision

[flw at rzg.mpg.de]

Hi Shery,
Yes, ideally we would like to compile PETSc in single precision and  
simply run a single precision version of SUPERLU_DIST just like e.g.  
MUMPS.

Best regards and thanks,
Felix
Zitat von "Xiaoye S. Li" <xsli at lbl.gov>:

> Barry,
>
> I have a branch 'Mixed-precision' working with single precision FP32. I
> assume Felix wants to use superlu_dist from petsc.  How do you want to
> incorporate it in petsc?
>
> https://github.com/xiaoyeli/superlu_dist
>
> PS1:  in this version, FP32 only works on CPU.  FP64 and complex-FP64 all
> work on GPU.
>
> PS2: currently there is no mixed-precision yet, but it is the branch we are
> adding mix-prec support.  Will take a while before merging to master.
>
> Sherry
>
>
> On Wed, Jul 22, 2020 at 6:04 AM <flw at rzg.mpg.de> wrote:
>
>> Hi Barry,
>> for now I just want to run everything in single on CPUs only with
>> SUPERLU_DIST. Maybe we will also incorporate GPUs in the future, but
>> there are no immediate plans yet. So if you could provide the support,
>> that would be awesome.
>>
>> Best regards,
>> Felix
>>
>> Zitat von Barry Smith <bsmith at petsc.dev>:
>>
>> > Felix,
>> >
>> >     What are your needs, do you want this for CPUs or for GPUs?  Do
>> > you wish to run all your code in single precision or just the
>> > SuperLU_Dist solver while the rest of your code double?
>> >
>> >     If you want to run everything on CPUs using single precision
>> > then adding the support is very easy, we can provide that for you
>> > any time. The other cases will require more thought.
>> >
>> >     Barry
>> >
>> >
>> >> On Jul 21, 2020, at 8:58 AM, flw at rzg.mpg.de wrote:
>> >>
>> >> Dear PETSc support team,
>> >> some time ago you told me that you are planning on releasing a
>> >> version that supports SUPERLU_DIST in single-precision soon. Can
>> >> you tell me roughly what time frame you had in mind?
>> >>
>> >> Best regards,
>> >> Felix
>> >>
>>
>>
>>
>>