[petsc-users] Kokkos with OpenMP

[Junchao Zhang]

Mark,
  I hope I can take up the Kokkos work in early February once we have the
ecp-tpds paper done.
--Junchao Zhang


On Mon, Jan 18, 2021 at 8:16 AM Mark Adams <mfadams at lbl.gov> wrote:

> OK, this running and using OMP Fieldsplit/additive.
>
> Kokkos does not have any solvers hooked up yet, but I have added an LU
> interface that just uses AIJ's LU.
>
> Junchao, I asked Kokkos about adding LU and they said that it is on the
> todo list. Until they do that I can't use it for the paper, but if you want
> to work on integrating solvers into aijkokkos I can do that and test with
> GMRES/Jacobi.
>
> Thanks,
> Mark
>
> On Mon, Jan 18, 2021 at 1:00 AM Barry Smith <bsmith at petsc.dev> wrote:
>
>>
>>   Mark,
>>
>>   Looks like you tried to do two things at once, you removed the fopenmp
>> and put back the --with-cuda.
>>
>>
>>
>>   Like I said if you want PETSc to build OpenMP and CUDA you need to
>> remove this line (and some others) from kokkos.py
>>
>>
>>
>>      if self.openmp.found + pthreadfound + self.cuda.found > 1:
>>       raise RuntimeError("Kokkos only supports a single parallel system
>> during its configuration")
>>
>>
>>
>> On Jan 17, 2021, at 9:39 PM, Mark Adams <mfadams at lbl.gov> wrote:
>>
>>
>>>
>>> Here is the problem. You set  --CXXOPTFLAGS="-g -O0 -fPIC  -fopenmp" to
>>> indicate how to compile for OpenMP but when ./configure checks the
>>> installed KokkosKernel include files it uses CXXPPFLAGS. (Since you
>>> provided the flag CXXOPTFLAGS  ./configure never determines the flag to put
>>> into CXXPPFLAGS.
>>>
>>> It is more desirable if you do not provide -fPIC  -fopenmp.  ./configure
>>> will figure them out for you.
>>>
>>
>> :(
>> <configure.log>
>>
>>
>>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20210119/fc523e8e/attachment-0001.html>