liiutao

> [@A-006](https://github.com/A-006) have suggested me to set "fft_mode 1" to accelerate multi-threads calculation, maybe [@JTaozhang](https://github.com/JTaozhang) you can try it. Setting "fft_mode 1" affects FFTW, but I'm not sure to what...

Here is the part that calculates Cu > examples/scf/lcao_Cu/INPUT INPUT_PARAMETERS pseudo_dir ../../../tests/PP_ORB orbital_dir ../../../tests/PP_ORB nbands 10 calculation scf ecutwfc 100 scf_thr 1.0e-8 scf_nmax 100 smearing_method gaussian smearing_sigma 0.02 mixing_type broyden...

in the PR #4827 ,i add the openmp gather in the source/module_hamilt_lcao/module_gint/gint_vl_cpu_interface.cpp：204-223。now the dvlocal has been add to the openmp.Can **pvdpRx_reduced** be correctly calculated now?

Now the calculation result of **gint_kernel_dvlocal** will be copied to pvdpRx_reduced. It is not clear whether the calculation result is correct, and it is necessary to understand how to handle...

Now,Refactor the code section to make the OpenMP results consistent, and integration tests will be added later.