Require paddlepaddle>=2.3.0

Author: lululxvi

.travis.yml

@@ -30,10 +30,12 @@ install:
   - pip install tensorflow tensorflow-probability
   - conda install pytorch cpuonly -c pytorch
   - pip install jax flax optax
+  - pip install paddlepaddle
 
 script:
   # Your test script goes here
   - DDEBACKEND=tensorflow.compat.v1 python -c "import deepxde"
   - DDEBACKEND=tensorflow python -c "import deepxde"
   - DDEBACKEND=pytorch python -c "import deepxde"
   - DDEBACKEND=jax python -c "import deepxde"
+  - DDEBACKEND=paddle python -c "import deepxde"

deepxde/backend/paddle/tensor.py

@@ -1,7 +1,12 @@
 """paddle backend implementation"""
+from distutils.version import LooseVersion
+
 import paddle
 
 
+if LooseVersion(paddle.__version__) < LooseVersion("2.3.0"):
+    raise RuntimeError("DeepXDE requires PaddlePaddle>=2.3.0")
+
 if paddle.device.is_compiled_with_cuda():
     paddle.device.set_device("gpu")
 

docs/requirements.txt

@@ -12,7 +12,7 @@ tensorflow-probability>=0.10.0
 # PyTorch
 torch>=1.9.0
 # PaddlePaddle
-paddlepaddle
+paddlepaddle>=2.3.0
 # JAX
 jax
 flax