Error using Multiclass support vector machines

I am operating with two data files for a project. My training set and testing set are of size 451315 X 304 respectively. I am aiming to classify eight different classes. I have tried using the Multi Class Support Vector Machine by Anand Mishra (Thanks to you, sir!) provided in MATLAB answers forum. However, this is the error that occurs in the function m-file. It works for a smaller dataset, but at this high amount data, it is giving away this error. Please clarify.

The error shown is as follows.

Error using seqminopt>seqminoptImpl (line 198)
No convergence achieved within maximum number of iterations.

Error in seqminopt (line 81)
[alphas offset] = seqminoptImpl(data, targetLabels, ...

Error in svmtrain (line 499)
    [alpha, bias] = seqminopt(training, groupIndex, ...

[Walter Roberson]

... so increase the maximum number of iterations ?