Set the simulation run-time resolution using `timescale in test bench. There is no simulator performance gain achieved through
use of coarser resolution with the Xilinx simulation
models. (In Xilinx simulation models, most simulation time
is spent in delta cycles, and delta cycles are not affected by simulator resolution.)
Important: Run simulations using a time
resolution of 1 fs. Some Xilinx primitive components, such as GT,
require a 1 fs resolution to work properly in either functional or timing
simulation.
See Simulation Options for detailed information on Simulation Options in Settings dialog box.
Important: Picoseconds are used as the minimum resolution because testing equipment can measure timing only to the nearest picosecond resolution.