[RUNTIME] Proper Device Attribute Query for AMD GPU

[petrex]

The PR implements proper device queries through hip runtime API.

One primary motivation is to support devices across different architectures. Note that we had some hardcoded value before (for example, max thread per block/ warp size), which may not be optimal for the new architecture.

One minor change: replace hipGetDeviceProperties() with hipDeviceGetAttribute() for better perf.

[petrex]

The error doesn't seem relevant to me, let me kick off the CI again.

___________________________ test_forward_placeholder ___________________________
def test_forward_placeholder():
'''test a simple pb with Placeholder node in the end of GraphDef'''
with tf.Graph().as_default():
> graph_def = tf_testing.get_workload("Custom/placeholder.pb")
tests/python/frontend/tensorflow/test_forward.py:1879: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ python/tvm/relay/testing/tf.py:209: in get_workload
path_model = download_testdata(model_url, model_path, module='tf')
python/tvm/contrib/download.py:158: in download_testdata
download(url, abspath, overwrite=False, size_compare=True)
python/tvm/contrib/download.py:63: in download
res_get = urllib2.urlopen(url)
/usr/lib/python3.6/urllib/request.py:223: in urlopen
return opener.open(url, data, timeout)
/usr/lib/python3.6/urllib/request.py:532: in open
response = meth(req, response)
/usr/lib/python3.6/urllib/request.py:642: in http_response
'http', request, response, code, msg, hdrs)
/usr/lib/python3.6/urllib/request.py:570: in error
return self._call_chain(*args)
/usr/lib/python3.6/urllib/request.py:504: in _call_chain
result = func(*args)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ self = <urllib.request.HTTPDefaultErrorHandler object at 0x7f8c54531f98>
req = <urllib.request.Request object at 0x7f8c9c49a748>
fp = <http.client.HTTPResponse object at 0x7f8c9c2e5278>, code = 503
msg = 'Service Unavailable'
hdrs = <http.client.HTTPMessage object at 0x7f8c801b3080>
def http_error_default(self, req, fp, code, msg, hdrs):
> raise HTTPError(req.full_url, code, msg, hdrs, fp)
E urllib.error.HTTPError: HTTP Error 503: Service Unavailable
/usr/lib/python3.6/urllib/request.py:650: HTTPError

[petrex]

See wiki. One architecture with different compute capabilities.

[masahi]

@petrex sorry I merged #4341 first and there is a conflict. Can you rebase?

[masahi]

@petrex can you check indentation issues? I see some weird indentation done by clang-format. It should be consistent with the rest of the code base.

[petrex]

Morning @masahi. That weird clang-format behavior was due to a missing { from a manual merging. I've pushed the fix (passing linter and build, now with unit tests). Let's wait for the signal from CI. thanks