environment_log

# Current environment test (styx)


> gfortran 
  - gcc version 6.3.0 (styx: default)
    Davidson    : pass; openMP: pass
    Arpack      : pass; openMP: pass
    propagation : pass; openMP: pass

  - gcc version 8.3.0 (styx: gcc_830_init)
    Davidson    : pass; openMP: pass
    Arpack      : pass; openMP: pass (commit "dmout")
      a wierd bug subroutine "dmout" for matrix output at line 1050
    propagation : pass; openMP: pass
    
  - gcc version 9.1.0 (styx: gcc_910_init) 
    Davidson    : pass; openMP: pass
    Arpack      : pass; openMP: pass (commit "dmout")
      a wierd bug subroutine "dmout" for matrix output at line 1050
    propagation : pass; openMP: pass

> ifort

  - ifort version 17.0.1 (styx: intel17_init)
    Davidson    : pass; openMP: pass
    Arpack      : pass; openMP: pass
    propagation : pass; openMP: pass
    
  - ifort version 18.0.3 (styx: intel18_init)
    Davidson    : pass; openMP: pass
    Arpack      : pass; openMP: pass
    propagation : pass; openMP: pass

> mpifort
  - Open MPI: 1.4.3 (styx: openmpi_init)
    ! note, openmpi_init is not correct in initialize the OpenMPI environment
    ! the mpifort is note currectly load, check by "which mpifort"

  - Open MPI: 2.0.2 compiled with gfortran (styx: default)
    Davidson    : pass
    Arpack      : pass
    propagation : pass

  - Open MPI: 4.0.3 compiled with ifort (styx: openmpi_403_intel18_init)
    Davidson    : pass
    Arpack      : pass
    propagation : pass

> pgf90

    
----------------------------------------------------------------------------------------
> makefile parallelization 
  num_cores=2: 1.8 times improvement; 
  num_cores=3: 2.3; 
  num_cores=4: 2.7;
  num_cores=5: 2.8;
  suggest to run with: make -j 3