High Throughput Complex Multiply Implementation resource

Question

There are two option in the implementation resource of a High Throughput Complex Multiply block in LabVIEW FPGA (Auto and Look-up Table). What is the difference between the two and what is the advantage of one over the other? which consumes less fpga resource?

Answer 1

nmbernardo,
Auto specifies that the compiler decides whether to use embedded block multipliers or look-up tables (LUTs) to implement the multiplier. Whereas Look-Up Table specifies that this function uses LUTs to implement the multiplier. Selecting this option might increase the clock rate at which this function can compile.