MNIST CNN training doesn't work on Cuda 8.0 + Cudnn 5.1
Created by: zchen0211
My paddle demo training on mnist is good on cpu but doesn't converge on GPU. I used latest release of Ubuntu 16.04, cuda and cudnn. The codes are in the ./demo, with standard setup. The same codes run perfectly on the old version cuda 7.5 + cudnn 5.
After many iterations, the test error is still high. The error rate is still 30%+, which should be around 1% in previous releases.