PC freeze at the start of neural network training

Hello All,

I am training a 2 hidden layers neural network to predict a single output as a function of 8 inputs of 5425 sample each. I have tested different neurons number successfully until I reach 200 neurons in each hidden layer when the MATLAB gives me an "Out of memory" error.

Then, I have increased my DDR3 RAM from 16 GB to 24 GB. I haven't received the out of memory error but the PC freeze at the start of the training with no response for minutes so I have to unplug it !!!!!!!!!!!!

Is it the RAM or a processor or what please ???

MY PC has an intel core i7-3770-3.4 GHz and an intel DQ77MK motherboard and a GTx 650 Ti - 1 GB - GDDR5 and 16 GB DDR3 10600U RAM 1333 MHz (Upgraded to 24 GB as explained earlier).

My code is very simple:

net = feedforwardnet([200,200],'trainlm');

net.divideParam.trainRatio = 70/100;

net.divideParam.valRatio = 15/100;

net.divideParam.testRatio = 15/100;

[net,tr] = train(net,st_inputs5,st_output5);

y = net(st_inputs5); %Estimate the targets using the trained network.

perf = perform(net,y,st_output5);

time = mean(tr.time);

mse = mean(((st_output5(:)-y(:)).^2));

rmse=sqrt(mse);

R222 = 1 - sum((st_output5 - y).^2)/sum((st_output5 - mean(st_output5)).^2);

mae = mean(abs(((st_output5(:)-y(:)))));

tr.num_epochs;

Answer 1

[Ameen Bassam]

Problem solved. I have upgraded my RAM to 32 GB RAM with a higher transfer rate of 1600 MHz instead of the old 1333 MHz and installed an SSD instead of the HDD. Training takes longtime but it works.