[petsc-users] petsc without MPI

[Balay, Satish]

Not sure why you are looking at this flag and interpreting it - PETSc code uses the flag PETSC_HAVE_MPIUNI to check for a sequential build.

[this one states the module MPI similar to BLASLAPACK etc  in configure is enabled]

Satish

On Tue, 19 Nov 2019, Povolotskyi, Mykhailo via petsc-users wrote:

> Let me explain the problem.
> 
> This log file has
> 
> #ifndef PETSC_HAVE_MPI
> #define PETSC_HAVE_MPI 1
> #endif
> 
> while I need to have PETSC without MPI.
> 
> On 11/19/2019 2:55 PM, Matthew Knepley wrote:
> The log you sent has configure completely successfully. Please retry and send the log for a failed run.
> 
>   Thanks,
> 
>      Matt
> 
> On Tue, Nov 19, 2019 at 2:53 PM Povolotskyi, Mykhailo via petsc-users <petsc-users at mcs.anl.gov<mailto:petsc-users at mcs.anl.gov>> wrote:
> Why it did not work then?
> 
> On 11/19/2019 2:51 PM, Balay, Satish wrote:
> > And I see from configure.log - you are using the correct option.
> >
> > Configure Options: --configModules=PETSc.Configure --optionsModule=config.compilerOptions --with-scalar-type=real --with-x=0 --with-hdf5=0 --with-single-library=1 --with-shared-libraries=0 --with-log=0 --with-mpi=0 --with-clanguage=C++ --with-cxx-dialect=C++11 --CXXFLAGS="-fopenmp -fPIC" --CFLAGS="-fopenmp -fPIC" --with-fortran=0 --FFLAGS="-fopenmp -fPIC" --with-64-bit-indices=0 --with-debugging=0 --with-cc=gcc --with-fc=gfortran --with-cxx=g++ COPTFLAGS= CXXOPTFLAGS= FOPTFLAGS= --download-metis=0 --download-superlu_dist=0 --download-parmetis=0 --with-valgrind-dir=/apps/brown/valgrind/3.13.0_gcc-4.8.5 --download-mumps=1 --with-mumps-serial=1 --with-fortran-kernels=0 --with-blaslapack-lib="-Wl,-rpath,/apps/cent7/intel/compilers_and_libraries_2017.1.132/linux/mkl/lib/intel64  -L/apps/cent7/intel/compilers_and_libraries_2017.1.132/linux/mkl/lib/intel64 -lmkl_intel_lp64 -lmkl_gnu_thread -lmkl_core " --with-blacs-lib=/apps/cent7/intel/compilers_and_libraries_2017.1.132/linux/mkl/lib/intel64/libmkl_blacs_intelmpi_lp64.so --with-blacs-include=/apps/cent7/intel/compilers_and_libraries_2017.1.132/linux/mkl/include --with-scalapack=0
> > <<<<<<<
> >
> > And configure completed successfully. What issue are you encountering? Why do you think its activating MPI?
> >
> > Satish
> >
> >
> > On Tue, 19 Nov 2019, Balay, Satish via petsc-users wrote:
> >
> >> On Tue, 19 Nov 2019, Povolotskyi, Mykhailo via petsc-users wrote:
> >>
> >>> Hello,
> >>>
> >>> I'm trying to build PETSC without MPI.
> >>>
> >>> Even if I specify --with_mpi=0, the configuration script still activates
> >>> MPI.
> >>>
> >>> I attach the configure.log.
> >>>
> >>> What am I doing wrong?
> >> The option is --with-mpi=0
> >>
> >> Satish
> >>
> >>
> >>> Thank you,
> >>>
> >>> Michael.
> >>>
> >>>
> 
> 
> 
> --
> What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.
> -- Norbert Wiener
> 
> https://www.cse.buffalo.edu/~knepley/<http://www.cse.buffalo.edu/~knepley/>
>