Introduction
Modern FPGA designs, with their increasing density and complexity, introduce significant challenges for achieving timing closure. This document presents a verified and repeatable methodology to accelerate timing closure within the Intel® Quartus® Prime Pro Edition software. It details three key steps: initial RTL analysis and optimization, application of automated compiler techniques, and preservation of satisfactory design results.
Key Steps for Timing Closure Acceleration
Step 1: Analyze and Optimize Design RTL
This phase focuses on optimizing the design's source code. It involves correcting violations identified by the Design Assistant, reducing logic levels to improve Fitter prioritization, and mitigating high fan-out nets to reduce resource congestion.
Step 2: Apply Compiler Optimization Techniques
This step involves leveraging the Compiler's optimization modes and strategies to manage resource congestion, especially in highly utilized designs. Techniques include adjusting optimization settings for area and routability, and employing fractal synthesis for arithmetic-intensive designs.
Step 3: Preserve Satisfactory Results
To streamline future compilations, this stage focuses on locking down critical design elements like clocks, RAMs, and DSPs. It also covers preserving design partition results, allowing for focused optimization on specific parts of the design that still require attention.
Related Information
For detailed guidance on specific features and techniques, refer to the Intel Quartus Prime Pro Edition User Guides, including those on Design Optimization, Design Recommendations, Design Compilation, and Block-Based Design. Application Note AN-899 also provides insights into reducing compile time with fast preservation.
For more information on Intel FPGA products and solutions, visit the Intel FPGA website.
