fix(mge/test): fix reproducibility of test_correctness.py

GitOrigin-RevId: 70bd43bbabd022ce9538d92291ddb1c93a596e0a

python_module/test/integration/test_correctness.py

@@ -7,6 +7,8 @@
 # software distributed under the License is distributed on an
 # "AS IS" BASIS, WITHOUT ARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 import os
+import re
+import subprocess
 import sys
 
 import numpy as np
@@ -15,18 +17,48 @@ import megengine as mge
 import megengine.functional as F
 from megengine import jit, tensor
 from megengine.functional.debug_param import set_conv_execution_strategy
-from megengine.module import BatchNorm2d, Conv2d, Linear, MaxPool2d, Module
+from megengine.module import AvgPool2d, BatchNorm2d, Conv2d, Linear, Module
 from megengine.optimizer import SGD
 from megengine.test import assertTensorClose
 
 
+def get_gpu_name():
+    try:
+        gpu_info = subprocess.check_output(
+            ["nvidia-smi", "--query-gpu=gpu_name", "--format=csv,noheader"]
+        )
+        gpu_info = gpu_info.decode("ascii").split("\n")[0]
+    except:
+        gpu_info = "None"
+    return gpu_info
+
+
+def get_cpu_name():
+    cpu_info = "None"
+    try:
+        cpu_info = subprocess.check_output(["cat", "/proc/cpuinfo"]).decode("ascii")
+        for line in cpu_info.split("\n"):
+            if "model name" in line:
+                return re.sub(".*model name.*:", "", line, 1).strip()
+    except:
+        pass
+    return cpu_info
+
+
+def get_xpu_name():
+    if mge.is_cuda_available():
+        return get_gpu_name()
+    else:
+        return get_cpu_name()
+
+
 class MnistNet(Module):
     def __init__(self, has_bn=False):
         super().__init__()
         self.conv0 = Conv2d(1, 20, kernel_size=5, bias=True)
-        self.pool0 = MaxPool2d(2)
+        self.pool0 = AvgPool2d(2)
         self.conv1 = Conv2d(20, 20, kernel_size=5, bias=True)
-        self.pool1 = MaxPool2d(2)
+        self.pool1 = AvgPool2d(2)
         self.fc0 = Linear(20 * 4 * 4, 500, bias=True)
         self.fc1 = Linear(500, 10, bias=True)
         self.bn0 = None
@@ -67,6 +99,13 @@ def update_model(model_path):
 
     The model with pre-trained weights is trained for one iter with the test data attached.
     The loss and updated net state dict is dumped.
+
+    .. code-block:: python
+
+        from test_correctness import update_model
+        update_model('mnist_model_with_test.mge') # for gpu
+        update_model('mnist_model_with_test_cpu.mge') # for cpu
+
     """
     net = MnistNet(has_bn=True)
     checkpoint = mge.load(model_path)
@@ -83,7 +122,11 @@ def update_model(model_path):
     loss = train(data, label, net=net, opt=opt)
     opt.step()
 
-    checkpoint.update({"net_updated": net.state_dict(), "loss": loss.numpy()})
+    xpu_name = get_xpu_name()
+
+    checkpoint.update(
+        {"net_updated": net.state_dict(), "loss": loss.numpy(), "xpu": xpu_name}
+    )
     mge.save(checkpoint, model_path)
 
 
@@ -92,9 +135,9 @@ def run_test(model_path, use_jit, use_symbolic):
     """
     Load the model with test cases and run the training for one iter.
     The loss and updated weights are compared with reference value to verify the correctness.
-    
-    Dump a new file with updated result by calling update_model 
-    if you think the test fails due to numerical rounding errors instead of bugs. 
+
+    Dump a new file with updated result by calling update_model
+    if you think the test fails due to numerical rounding errors instead of bugs.
     Please think twice before you do so.
 
     """
@@ -109,7 +152,7 @@ def run_test(model_path, use_jit, use_symbolic):
     data.set_value(checkpoint["data"])
     label.set_value(checkpoint["label"])
 
-    max_err = 1e-1
+    max_err = 1e-5
 
     train_func = train
     if use_jit: