cant install cupy

windows10, anaconda3 installed Visual Studio Community 2017 installed cuda_9.0.176_win10

`(base) C:\Users\cmjoh>pip install cupy --pre Collecting cupy Using cached cupy-4.0.0b4.tar.gz Complete output from command python setup.py egg_info: ************************************************** *** WARNING: Cannot find nvToolsExt. nvtx was disabled. ************************************************** Options: {‘package_name’: ‘cupy’, ‘long_description’: None, ‘wheel_libs’: [], ‘profile’: False, ‘linetrace’: False, ‘annotate’: False, ‘no_cuda’: False}

-------- Configuring Module: cuda --------
Microsoft Visual C++ 14.0 is required. Get it with "Microsoft Visual C++ Build Tools": http://landinghub.visualstudio.com/visual-cpp-build-tools

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

Build Environment:
  Include directories: ['C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\v9.0\\include', 'C:\\Program Files\\NVIDIA Corporation\\NvToolsExt\\include']
  Library directories: ['C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\v9.0\\bin', 'C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\v9.0\\lib\\x64', 'C:\\Program Files\\NVIDIA Corporation\\NvToolsExt\\lib\\x64']
  nvcc command       : ['C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\v9.0\\bin/nvcc.exe']

Environment Variables:
  CFLAGS          : (none)
  LDFLAGS         : (none)
  LIBRARY_PATH    : (none)
  CUDA_PATH       : C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v9.0
  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']
    -> Check your CFLAGS environment variable.

ERROR: CUDA could not be found on your system.
Please refer to the Installation Guide for details:
https://docs-cupy.chainer.org/en/stable/install.html

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

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "C:\Users\cmjoh\AppData\Local\Temp\pip-build-g5xaodze\cupy\setup.py", line 64, in <module>
    ext_modules = cupy_setup_build.get_ext_modules()
  File "C:\Users\cmjoh\AppData\Local\Temp\pip-build-g5xaodze\cupy\cupy_setup_build.py", line 547, in get_ext_modules
    extensions = make_extensions(arg_options, compiler, use_cython)
  File "C:\Users\cmjoh\AppData\Local\Temp\pip-build-g5xaodze\cupy\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 C:\Users\cmjoh\AppData\Local\Temp\pip-build-g5xaodze\cupy
`

[beckybai]

same problem with cuda-9.0. using this solved the problem: $pip install cupy-cuda90

[kmaehashi]

We started to provide windows wheels for development releases. Please refer to the installation guide. https://docs-cupy.chainer.org/en/latest/install.html#install-cupy