onSize()">
                <label for="validation_size">
                    <a href="#" data-toggle="tooltip" data-placement="top" title="What percentage of data to use for validation">Validation size</a>: 
                    <span id="validation_size_label"></span>
                </label> 
            </div>
            <div class="form-group">
                <input type="checkbox" id="multi_gpu" name="multi_gpu" checked>
                <label for="multi_gpu"><a href="#" data-toggle="tooltip" data-pla