Version number correspondence:
paddlepaddle-gpu==XXXpostXX where the two XXs after the post represent the CUDA version and the CUDNN version.
paddlepaddle-gpu==1.5.1.post87 represents CUDA version 8, CUDNN version 7.X
paddlepaddle-gpu==1.5.1.post97 represents CUDA version 9, CUDNN version 7.X
paddlepaddle-gpu==1.5.1.post107 represents CUDA version 10, CUDNN version 7.X