Implementation Log - Implementation Log - 2026.1 English - UG906

Vivado Design Suite User Guide: Design Analysis and Closure Techniques (UG906)

Document ID
UG906
Release Date
2026-06-23
Version
2026.1 English

The Vivado implementation log includes the following:

  • Information about the location, netlist, and constraints.
  • Logic optimizations that Vivado runs by default to reduce utilization and improve design performance.
  • The placement phases, plus a post-placement timing estimate (WNS and TNS only).
  • The router phases, plus several timing estimates and an estimated post-routing timing summary (WNS, TNS, WHS, and THS only).
  • Elapsed time and memory for each implementation command and phases.

Review this report or the proper section of the messages tab for errors, critical warnings, and warnings. The placer generates warnings that can be elevated to errors later in the flow. If using stepwise runs, the log contains only the results for the last step.

Important: Review this log or the messages tab for errors, critical warnings, and warnings. The synthesis tool can issue messages that cause serious issues later in the design flow. Address them early to avoid downstream problems.