I tried to install cupy via pip install cupy. I get the following error:

    Looking in links: 
    /cvmfs/ 
   /cvmfs/ Collecting cupy
    Using cached 
    Complete output from command python setup.py egg_info:
    Options: {'profile': False, 'annotate': False, 'linetrace': False, 'wheel_libs': [], 'package_name': 'cupy', 'no_rpath': False, 'no_cuda': False, 'long_description': None}
    **************************************************
    *** WARNING: nvcc not in path.
    *** WARNING: Please set path to nvcc.
    **************************************************
    **************************************************
    *** WARNING: nvcc path != CUDA_PATH
    *** WARNING: nvcc path: None
    *** WARNING: CUDA_PATH: /cvmfs/
    **************************************************

    -------- Configuring Module: cuda --------
    cc1plus: warning: command line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++
    gcc: warning: /cvmfs/ linker input file unused because linking not done
    /cvmfs/ file not recognized: Is a directory
    collect2: error: ld returned 1 exit status
    Cannot build a stub file.
    Original error: command 'g++' failed with exit status 1

    ************************************************************
    * CuPy Configuration Summary                               *
    ************************************************************

    Build Environment:
      Include directories: ['/cvmfs/
      Library directories: ['/cvmfs/
      nvcc command       : ['/cvmfs/

    Environment Variables:
      CFLAGS          : /cvmfs/
      LDFLAGS         : /cvmfs/
      LIBRARY_PATH    : /cvmfs/
      CUDA_PATH       : /cvmfs/
      NVCC            : (none)

    Modules:
      cuda      : No
        -> Include files not found: ['cublas_v2.h', 'cuda.h', 'cuda_profiler_api.h', 'cuda_runtime.h', 'cufft.h', 'curand.h', 'cusparse.h', 'nvrtc.h', 'nvToolsExt.h']
        -> Check your CFLAGS environment variable.

    ERROR: CUDA could not be found on your system.
    Please refer to the Installation Guide for details:
    

    ************************************************************

    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/localscratch/tamouze.7243408.0/pip-install-_wUDId/cupy/setup.py", line 65, in <module>
        ext_modules = cupy_setup_build.get_ext_modules()
      File "cupy_setup_build.py", line 561, in get_ext_modules
        extensions = make_extensions(arg_options, compiler, use_cython)
      File "cupy_setup_build.py", line 374, in make_extensions
        raise Exception('Your CUDA environment is invalid. '
    Exception: Your CUDA environment is invalid. Please check above error log.

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /localscratch/tamouze.7243408.0/pip-install-_wUDId/cupy/

Im working on SSH linux server. Im not comfortable with linux environment. My problem looks like the environment is not ok, please how can setup correctly them? I want to use cupy with cahiner