: set_clock_groups identifies clocks as synchronous, asynchronous, or exclusive to prevent unnecessary timing analysis on unrelated paths. Optimization Strategies
: Ensures data remains stable long enough after the clock edge to prevent corruption. Violations are fixed by inserting buffers. 2. Defining the Clock Network
# Creates a divide-by-2 clock generated by an internal register create_generated_clock -name div2_clk -source [get_ports clk] -divide_by 2 [get_pins clk_div_reg/Q] Use code with caution. Clock Non-Idealities: Jitter, Skew, and Latency synopsys timing constraints and optimization user guide 2021
Reorganizing logic gates to reduce the levels of logic in a critical path.
When Design Compiler faces severe negative slack (timing violations), it employs aggressive recovery strategies: When Design Compiler faces severe negative slack (timing
Fine-tune constraints to explore different trade-offs between performance, power, and area.
Use report_timing extensively. Do not just look at violations; understand the path's structure. massive area inflation
"Avoid using set_max_delay on a path that already has a clock. This overrides the default setup relationship and usually results in over-optimization, increasing area by 20%."
: Constraining the external environment for the chip's ports.
Artificially tight targets cause tool congestion, massive area inflation, and excessive power draw. report_constraint -all_violators
Mastering Digital Design: A Comprehensive Guide to Synopsys Timing Constraints and Optimization