TensorRT 5 builder when set max_batch_size to 8 the output shape?

Hi,
I would like to know ,When I set the maxBatchSize to 8, what is the corresponding output?
for input (3,224,224),maxBatchSize set to 1, output is (1,101)
for input (3,224,224),maxBatchSize set to 8, my output is still (1,101),but why not (8,101)?

Thanks.