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

ID 683283
Date 9/24/2018
Document Table of Contents Summary of Guidelines Related to Logic Optimization Across Partitions

To ensure that your design does not require logic optimization across partitions, follow the guidelines below:
  • Include logic in the same partition for optimization and merging
  • Include constants in the same partition as logic
  • Avoid signals that drive multiple partition I/O or connect I/O together
  • Invert clocks in destination partitions
  • Connect I/O directly to I/O register for packing across partition boundaries
  • Do not use internal tri-states
  • Include all tri-state and enable logic in the same partition

Remember that these guidelines are not mandatory when implementing an incremental compilation flow, but can improve the quality of results. When creating source design code, follow these guidelines and organize your HDL code to support good partition boundaries. For designs that are complete, assess whether assigning a partition affects the resource utilization or timing performance of a design block as compared to the flat design. Make the appropriate changes to your design or hierarchy, or merge partitions as required, to improve your results.