Install Chainer & cupy without CUDA on OSX 10.11.6

How can I install Chainer and cupy without CUDA on OS X 10.11.6?

I’m running on an old (2009) MacBookPro with an old GPU GeForce 9400 which only supports CUDA 1.1.

When I installed chainer it complained that cupy was not installed.

$ python -m chainer validate
Traceback (most recent call last):
  File "/Users/davidlaxer/anaconda/lib/python2.7/runpy.py", line 163, in _run_module_as_main
    mod_name, _Error)
  File "/Users/davidlaxer/anaconda/lib/python2.7/runpy.py", line 111, in _get_module_details
    __import__(mod_name)  # Do not catch exceptions initializing package
  File "chainer/__init__.py", line 26, in <module>
    from chainer import training  # NOQA
  File "chainer/training/__init__.py", line 7, in <module>
    from chainer.training import updaters  # NOQA
  File "chainer/training/updaters/__init__.py", line 1, in <module>
    from chainer.training.updaters import multiprocess_parallel_updater  # NOQA
  File "chainer/training/updaters/multiprocess_parallel_updater.py", line 12, in <module>
    from cupy.cuda import nccl
  File "/Users/davidlaxer/anaconda/lib/python2.7/site-packages/cupy/__init__.py", line 16, in <module>
    raise six.reraise(RuntimeError, RuntimeError(msg), sys.exc_info()[2])
  File "/Users/davidlaxer/anaconda/lib/python2.7/site-packages/cupy/__init__.py", line 8, in <module>
    from cupy import core
  File "/Users/davidlaxer/anaconda/lib/python2.7/site-packages/cupy/core/__init__.py", line 1, in <module>
    from cupy.core import core
RuntimeError: CuPy is not correctly installed. Please check your environment, uninstall Chainer and reinstall it with `pip install chainer --no-cache-dir -vvvv`.

I also tried to install a newer version of CUDA (e.g. 6.5, 7.0, 7.5, 8.0)

...

  gcc -fno-strict-aliasing -I/Users/davidlaxer/anaconda/include -arch x86_64 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -D_GLIBCXX_USE_CXX11_ABI=0 -D_FORCE_INLINES=1 -I/Developer/NVIDIA/CUDA-7.5/include -I/Users/davidlaxer/anaconda/include/python2.7 -c cupy/cuda/thrust.cpp -o build/temp.macosx-10.7-x86_64-2.7/cupy/cuda/thrust.o
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/private/var/folders/nj/nphdkhyj6s1dttb0pd9zb2wc0000gn/T/pip-build-dzkUib/cupy/setup.py", line 102, in <module>
        'sdist': sdist},
      File "/Users/davidlaxer/anaconda/lib/python2.7/site-packages/setuptools/__init__.py", line 129, in setup
        return distutils.core.setup(**attrs)
      File "/Users/davidlaxer/anaconda/lib/python2.7/distutils/core.py", line 151, in setup
        dist.run_commands()
      File "/Users/davidlaxer/anaconda/lib/python2.7/distutils/dist.py", line 953, in run_commands
        self.run_command(cmd)
      File "/Users/davidlaxer/anaconda/lib/python2.7/distutils/dist.py", line 972, in run_command
        cmd_obj.run()
      File "/Users/davidlaxer/anaconda/lib/python2.7/site-packages/setuptools/command/install.py", line 61, in run
        return orig.install.run(self)
      File "/Users/davidlaxer/anaconda/lib/python2.7/distutils/command/install.py", line 563, in run
        self.run_command('build')
      File "/Users/davidlaxer/anaconda/lib/python2.7/distutils/cmd.py", line 326, in run_command
        self.distribution.run_command(command)
      File "/Users/davidlaxer/anaconda/lib/python2.7/distutils/dist.py", line 972, in run_command
        cmd_obj.run()
      File "/Users/davidlaxer/anaconda/lib/python2.7/distutils/command/build.py", line 127, in run
        self.run_command(cmd_name)
      File "/Users/davidlaxer/anaconda/lib/python2.7/distutils/cmd.py", line 326, in run_command
        self.distribution.run_command(command)
      File "/Users/davidlaxer/anaconda/lib/python2.7/distutils/dist.py", line 972, in run_command
        cmd_obj.run()
      File "cupy_setup_build.py", line 554, in run
        build_ext.build_ext.run(self)
      File "/Users/davidlaxer/anaconda/lib/python2.7/site-packages/setuptools/command/build_ext.py", line 75, in run
        _build_ext.run(self)
      File "/Users/davidlaxer/anaconda/lib/python2.7/site-packages/Cython/Distutils/old_build_ext.py", line 185, in run
        _build_ext.build_ext.run(self)
      File "/Users/davidlaxer/anaconda/lib/python2.7/distutils/command/build_ext.py", line 340, in run
        self.build_extensions()
      File "/Users/davidlaxer/anaconda/lib/python2.7/site-packages/Cython/Distutils/old_build_ext.py", line 193, in build_extensions
        self.build_extension(ext)
      File "/Users/davidlaxer/anaconda/lib/python2.7/site-packages/setuptools/command/build_ext.py", line 196, in build_extension
        _build_ext.build_extension(self, ext)
      File "/Users/davidlaxer/anaconda/lib/python2.7/distutils/command/build_ext.py", line 499, in build_extension
        depends=ext.depends)
      File "/Users/davidlaxer/anaconda/lib/python2.7/distutils/ccompiler.py", line 574, in compile
        self._compile(obj, src, ext, cc_args, extra_postargs, pp_opts)
      File "cupy_setup_build.py", line 447, in _compile
        base_opts = build.get_compiler_base_options()
      File "install/build.py", line 153, in get_compiler_base_options
        _compiler_base_options = _get_compiler_base_options()
      File "install/build.py", line 191, in _get_compiler_base_options
        stderrdata.decode('utf8'))
    RuntimeError: Encountered unknown error while testing nvcc:
    nvcc fatal   : The version ('50000') of the host compiler ('clang') is not supported
    
    
    ----------------------------------------
Command "/Users/davidlaxer/anaconda/bin/python -u -c "import setuptools, tokenize;__file__='/private/var/folders/nj/nphdkhyj6s1dttb0pd9zb2wc0000gn/T/pip-build-dzkUib/cupy/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /var/folders/nj/nphdkhyj6s1dttb0pd9zb2wc0000gn/T/pip-1RDzQM-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /private/var/folders/nj/nphdkhyj6s1dttb0pd9zb2wc0000gn/T/pip-build-dzkUib/cupy/

clang:

$ clang --version
clang version 5.0.0 (tags/RELEASE_500/final)
Target: x86_64-apple-darwin15.6.0
Thread model: posix
InstalledDir: /Users/davidlaxer/anaconda/bin

nvcc:

$ nvcc --version
nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2015 NVIDIA Corporation
Built on Mon_Apr_11_13:23:40_CDT_2016
Cuda compilation tools, release 7.5, V7.5.26

xcode:

Version 8.2.1 (8C1002)

[stonebig]

excuse-me for the question, I have a doubt : can cupy work without Cuda ? (relying on numpy or numpy-mkl only)

[kmaehashi]

Good to hear that! In the era of Chainer 1.x, cupy was a part of chainer package.