Support for running on Mac OS

[leckie-chn]

Currently nni only supports running on Linux, but running on Mac is also important.

[leckie-chn]

encountered following error when running nnictl create --config examples/trials/mnist/config.yml

[2018-11-19 00:28:22] DEBUG (mnist_AutoML) {'dropout_rate': 0.562259326513507, 'conv_size': 2, 'hidden_size': 124, 'batch_size': 8, 'learning_rate': 0.01}
[2018-11-19 00:28:22] WARNING (tensorflow) From mnist.py:151: read_data_sets (from tensorflow.contrib.learn.python.learn.datasets.mnist) is deprecated and will be removed in a future version.
Instructions for updating:
Please use alternatives such as official/mnist/dataset.py from tensorflow/models.
[2018-11-19 00:28:22] WARNING (tensorflow) From /Users/test/Library/Python/3.6/lib/python/site-packages/tensorflow/contrib/learn/python/learn/datasets/mnist.py:260: maybe_download (from tensorflow.contrib.learn.python.learn.datasets.base) is deprecated and will be removed in a future version.
Instructions for updating:
Please write your own downloading logic.
[2018-11-19 00:28:22] WARNING (tensorflow) From /Users/test/Library/Python/3.6/lib/python/site-packages/tensorflow/contrib/learn/python/learn/datasets/base.py:252: _internal_retry.<locals>.wrap.<locals>.wrapped_fn (from tensorflow.contrib.learn.python.learn.datasets.base) is deprecated and will be removed in a future version.
Instructions for updating:
Please use urllib or similar directly.
[2018-11-19 00:28:22] ERROR (mnist_AutoML) <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:841)>
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py", line 1318, in do_open
    encode_chunked=req.has_header('Transfer-encoding'))
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py", line 1239, in request
    self._send_request(method, url, body, headers, encode_chunked)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py", line 1285, in _send_request
    self.endheaders(body, encode_chunked=encode_chunked)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py", line 1234, in endheaders
    self._send_output(message_body, encode_chunked=encode_chunked)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py", line 1026, in _send_output
    self.send(msg)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py", line 964, in send
    self.connect()
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py", line 1400, in connect
    server_hostname=server_hostname)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/ssl.py", line 407, in wrap_socket
    _context=self, _session=session)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/ssl.py", line 814, in __init__
    self.do_handshake()
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/ssl.py", line 1068, in do_handshake
    self._sslobj.do_handshake()
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/ssl.py", line 689, in do_handshake
    self._sslobj.do_handshake()
ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:841)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "mnist.py", line 228, in <module>
    main(params)
  File "mnist.py", line 151, in main
    mnist = input_data.read_data_sets(params['data_dir'], one_hot=True)
  File "/Users/test/Library/Python/3.6/lib/python/site-packages/tensorflow/python/util/deprecation.py", line 306, in new_func
    return func(*args, **kwargs)
  File "/Users/test/Library/Python/3.6/lib/python/site-packages/tensorflow/contrib/learn/python/learn/datasets/mnist.py", line 260, in read_data_sets
    source_url + TRAIN_IMAGES)
  File "/Users/test/Library/Python/3.6/lib/python/site-packages/tensorflow/python/util/deprecation.py", line 306, in new_func
    return func(*args, **kwargs)
  File "/Users/test/Library/Python/3.6/lib/python/site-packages/tensorflow/contrib/learn/python/learn/datasets/base.py", line 252, in maybe_download
    temp_file_name, _ = urlretrieve_with_retry(source_url)
  File "/Users/test/Library/Python/3.6/lib/python/site-packages/tensorflow/python/util/deprecation.py", line 306, in new_func
    return func(*args, **kwargs)
  File "/Users/test/Library/Python/3.6/lib/python/site-packages/tensorflow/contrib/learn/python/learn/datasets/base.py", line 205, in wrapped_fn
    return fn(*args, **kwargs)
  File "/Users/test/Library/Python/3.6/lib/python/site-packages/tensorflow/contrib/learn/python/learn/datasets/base.py", line 233, in urlretrieve_with_retry
    return urllib.request.urlretrieve(url, filename)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py", line 248, in urlretrieve
    with contextlib.closing(urlopen(url, data)) as fp:
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py", line 223, in urlopen
    return opener.open(url, data, timeout)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py", line 526, in open
    response = self._open(req, data)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py", line 544, in _open
    '_open', req)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py", line 504, in _call_chain
    result = func(*args)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py", line 1361, in https_open
    context=self._context, check_hostname=self._check_hostname)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py", line 1320, in do_open
    raise URLError(err)
urllib.error.URLError: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:841)>

[leckie-chn]

known possible issues for running examples/trials/mnist on Mac:
tensorflow/tensorflow - Mac + Python 3.6.1: Attempting to download mnist data results in CERTIFICATE_VERIFY_FAILED error

fix: run
/Applications/Python\ 3.6/Install\ Certificates.command

[leckie-chn]

supported in https://github.com/Microsoft/nni/releases/tag/v0.4