Feature/install check (#16044)

* test=develop, add install check

* test=develop, add install check scripts

* test=develop, refine language

* test=develop, add api spec

* test=develop, change cdn to bj to pass ci

paddle/fluid/API.spec

@@ -520,6 +520,7 @@ paddle.fluid.unique_name.guard (ArgSpec(args=['new_generator'], varargs=None, ke
 paddle.fluid.recordio_writer.convert_reader_to_recordio_file (ArgSpec(args=['filename', 'reader_creator', 'feeder', 'compressor', 'max_num_records', 'feed_order'], varargs=None, keywords=None, defaults=(Compressor.Snappy, 1000, None)), ('document', '65c7523e86f0c50bb729b01667f36310'))
 paddle.fluid.recordio_writer.convert_reader_to_recordio_files (ArgSpec(args=['filename', 'batch_per_file', 'reader_creator', 'feeder', 'compressor', 'max_num_records', 'feed_order'], varargs=None, keywords=None, defaults=(Compressor.Snappy, 1000, None)), ('document', 'bc643f0f5f1b9db57ff0d8a57d379bd7'))
 paddle.fluid.Scope Scope() -> paddle.fluid.core._Scope
+paddle.fluid.install_check.run_check (ArgSpec(args=[], varargs=None, keywords=None, defaults=None), ('document', '66b7c84a17ed32fec2df9628367be2b9'))
 paddle.reader.cache (ArgSpec(args=['reader'], varargs=None, keywords=None, defaults=None), ('document', '1676886070eb607cb608f7ba47be0d3c'))
 paddle.reader.map_readers (ArgSpec(args=['func'], varargs='readers', keywords=None, defaults=None), ('document', '77cbadb09df588e21e5cc0819b69c87d'))
 paddle.reader.buffered (ArgSpec(args=['reader', 'size'], varargs=None, keywords=None, defaults=None), ('document', '0d6186f109feceb99f60ec50a0a624cb'))

python/paddle/fluid/__init__.py

@@ -59,6 +59,7 @@ from .parallel_executor import *
 from . import compiler
 from .compiler import *
 from paddle.fluid.layers.math_op_patch import monkey_patch_variable
+from . import install_check
 
 Tensor = LoDTensor
 
@@ -91,6 +92,7 @@ __all__ = framework.__all__ + executor.__all__ + \
         'unique_name',
         'recordio_writer',
         'Scope',
+        'install_check',
     ]
 
 

python/paddle/fluid/install_check.py

+# Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from .framework import Program, program_guard, unique_name, default_startup_program
+from .param_attr import ParamAttr
+from .initializer import Constant
+from . import layers
+from . import backward
+from .imperative import Layer, nn
+from . import executor
+
+from . import core
+import numpy as np
+
+__all__ = ['run_check']
+
+
+class SimpleLayer(Layer):
+    def __init__(self, name_scope):
+        super(SimpleLayer, self).__init__(name_scope)
+        self._fc1 = nn.FC(self.full_name(),
+                          3,
+                          ParamAttr(initializer=Constant(value=0.1)))
+
+    def forward(self, inputs):
+        x = self._fc1(inputs)
+        x = layers.reduce_sum(x)
+        return x
+
+
+def run_check():
+    ''' intall check to verify if install is success
+
+    This func should not be called only if you need to verify installation
+    '''
+    print("Running Verify Fluid Program ... ")
+    prog = Program()
+    startup_prog = Program()
+    scope = core.Scope()
+    with executor.scope_guard(scope):
+        with program_guard(prog, startup_prog):
+            with unique_name.guard():
+                np_inp = np.array([[1.0, 2.0], [3.0, 4.0]], dtype=np.float32)
+                inp = layers.data(
+                    name="inp", shape=[2, 2], append_batch_size=False)
+                simple_layer = SimpleLayer("simple_layer")
+                out = simple_layer(inp)
+                param_grads = backward.append_backward(
+                    out, parameter_list=[simple_layer._fc1._w.name])[0]
+                exe = executor.Executor(core.CPUPlace(
+                ) if not core.is_compiled_with_cuda() else core.CUDAPlace(0))
+                exe.run(default_startup_program())
+                exe.run(feed={inp.name: np_inp},
+                        fetch_list=[out.name, param_grads[1].name])
+
+    print(
+        "Your Paddle Fluid is installed successfully! Let's start deep Learning with Paddle Fluid now"
+    )

python/paddle/fluid/tests/unittests/test_install_check.py

+# Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from __future__ import print_function
+import unittest
+import paddle.fluid as fluid
+
+
+class TestInstallCheck(unittest.TestCase):
+    def test_install_check(self):
+        fluid.install_check.run_check()