The requested array exceeds the preset

% 1. Create the net

net = newgrnn(sample_train_input,sample_train_output,0.01);

toc;

% 2. Simulate the validation set

output_valid = sim(net,sample_valid_input);

For the need, I build a grnn network.

sample_train_input is an array of 8*151066

sample_train_output is an array of 1*151066

sample_valid_input is an array of 8*18883

When executing “output_valid = sim(net,sample_valid_input)”, it prompts "The requested 151066x18883 (21.3GB) array exceeds the preset maximum array size. Creating arrays larger than this limit may take longer and will cause MATLAB to be unresponsive."

I have looked at the settings in the preset-matlab array size limit, I have set it to 100%, but I still have this problem, how can I fix it?

Answer 1

[Kiran Felix Robert]

Hi,

This issue arises due to RAM Limitations.

• As you have already set the Maximum array size to 100% try running the following command in the command window to check if the available memory is greater than the required 21GB.

memory;

• Also try checking if the Java heap memory is not set to a very large value. Refer this documentation for more info.
• Try out parallel simulations if you have Parallel computation toolbox.