Creating a 2D convolutional Neural Network

So, I've been following the matlab documentation: https://www.mathworks.com/help/nnet/ref/convolution2dlayer.html

and to create a convolutional network I have to take this steps for instance:

layer = convolution2dLayer(5,32,'Padding',2,'BiasLearnRateFactor',2);
layer.Weights = randn([5 5 3 32])*0.0001;

But when I do that I get the following error message:

Error using nnet.cnn.layer.Convolution2DLayer/set.Weights (line 156)

    Expected input to be one of these types:

gpuArray

Instead its type was double.

Can someone tell me whats wrong? ( I have matlab 2016a plus a video card not cuda compatible)

Answer 1

[Joss Knight]

You have to have a supported GPU to use ConvNets in R2016a. You need to get R2016b.