Evaluation of the latency of each module on my design

Hi,

In order to know how fast is my FPGA Stratix II 2SEP2S180F1020C3, I would like to evaluate the latency of my design on Alera Dsp Builder. I read that an approach is to obtain the latency of the arithmetic operators (multiplier, divider, parallel adder, gain) before evaluating the delay for each module. How can I do it?

I also read about "Implementing Multipliers in FPGA Devices" on the site http://www.altera.com/literature/an/an306.pdf, but I'm still confused.

So, I would also like to Know how I can use Dsp Builder to obtain the critical path or longest time between the input and the output of the data through the design.

Thanks