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

ID 683236
Date 9/26/2022

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2.3.2. Early Timing Analysis (Beta)

Early Timing Analysis flow is a beta feature. The SDC-on-RTL component of the Early Timing Analysis relies on enabling the DNI flow. DNI supports the underlying technology that helps read the constraints early in the compilation flow and use them in the later stages of Intel® Quartus® Prime compilation. For more information about the DNI flow, refer to DNI Flow (Beta).

Once you enable the DNI flow, the compilation dashboard updates, and you can now access the Early Timing Analysis stage along with Analysis & Elaboration, as shown in the following image:

Figure 32. Early Timing Analysis Stage

Early Timing Analysis flow is a combination of Synopsys* Design Constraint (SDC) on RTL and post-synthesis static timing analysis. However, you can run the flow even without RTL SDCs where you can view the post-synthesis timing netlist. For more information, refer to Synopsys* Design Constraint (SDC) on RTL and Post-Synthesis Static Timing Analysis (STA).

Figure 33. Early Timing Analysis Flow

Early Timing Analysis flow involves running Analysis & Elaboration and Synthesis stages in conjunction with the Early Timing Analysis stage and iterating on your design's static timing analysis results early in the Intel® Quartus® Prime software compilation flow without running the Fitter. For additional information about each of the compilation stages listed in the Early Timing Analysis Flow, refer to the following topics: