Managing Message Output - 2025.2 English - UG900

Vivado Design Suite User Guide: Logic Simulation (UG900)

Document ID
UG900
Release Date
2025-12-17
Version
2025.2 English

Your HDL design can produce a large number of messages (for example, via the $display Verilog system task or report VHDL statement). To manage the large volume of log messages produced, you can limit the amount of text output sent to the Tcl Console and log file. This saves computer memory and disk space. Use the -maxlogsize command line option as described in the following steps to set the maximum size of log file.

  1. In the Flow Navigator, right-click on SIMULATION and select Simulation Settings.
  2. In the Settings dialog box, add -maxlogsize <size> next to xsim.simulate.xsim.more_options, where <size> is the maximum amount of text output in megabytes.