Optimized FPGA VIs require a certain amount of limited resources, such as configurable logic blocks (CLBs) and memory, to execute.
The following table summarizes factors that typically require greater utilization of a particular FPGA resource. For example, increasing the size of arrays in your VI requires greater use of block RAM.
|Resource Utilization Factors||Block RAM||DSP48||Flip-Flops||LUTs|
|Increasing array size|
|Increasing multiply and multiply-accumulator operations|
|Increasing use of Boolean and Numeric nodes|
|Increasing use of Math nodes|
|Increasing clock rate|
In addition to the factors listed in the table, increasing the complexity of your algorithm leads to greater utilization of all FPGA resources. Common design choices that result in more complex algorithms include a high number of nested loops and the use of wider data types, such as 32-bit numbers versus 16-bit numbers.