Intel® Quartus® Prime Standard Edition User Guide: Design Compilation

ID 683283
Date 9/24/2018
Document Table of Contents

3.4.10. Fitter Intial Placement Seed

Specifies the starting value the Fitter uses when randomly determining the initial placement for the current design. The value can be any non-negative integer value. Changing the starting value may or may not produce better fitting. Specify a starting value only if the Fitter is not meeting timing requirements by a small amount. Use the Design Space Explorer to sweep many seed values easily and find the best value for your project. Modifying the design or Quartus settings even slightly usually changes which seed is best for the design.

To set the Synthesis Seed option, click Assignments > Settings > Compiler Settings > Advanced Settings (Fitter). The default value is 1. You can specify a positive integer value.