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@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>