Dynamic Delay Budgeting for Circuit Placement and Routing

The patent implements dynamic delay budgeting where delay budgets are not fixed but are continuously updated during the placement and routing process. The system detects budget events (such as placement changes or routing modifications) and recalculates delay budgets in real-time, allowing the constraints to adapt as the design evolves. This dynamic approach enables better exploration of implementation options while maintaining manageable complexity through automated detection and update mechanisms.

The system incorporates feedback loops where the results of placement and routing operations are fed back into the delay budget calculation process. When budget events are detected, the system recalculates delay budgets based on the new state of the circuit design, creating a closed-loop control system. This feedback mechanism ensures that delay constraints remain accurate and relevant throughout the design process, improving placement and routing quality without requiring manual intervention.

The patent transforms static delay budgets into dynamic constraints that adapt during the design process. By detecting budget events such as placement changes or routing modifications and automatically recalculating delay budgets, the system enables flexible exploration of implementation options. This dynamic approach allows the design process to adapt to new possibilities without requiring complete re-evaluation of all constraints, thus improving adaptability while managing time efficiently.

The system performs preliminary detection of budget events and proactive recalculation of delay budgets before they become critical constraints. By anticipating when delay budgets need to be updated and performing the recalculation in advance, the system enables smoother exploration of implementation options without causing delays in the overall design process. This preliminary action approach maintains predictability while enhancing adaptability.

The patent implements a dynamic delay budget update mechanism that balances quality improvement with computational efficiency. Instead of continuously updating delay budgets, the system detects specific budget events (such as placement changes or routing modifications) and triggers recalculation only when necessary. This event-driven dynamic approach maintains high placement and routing quality while avoiding unnecessary computational overhead from frequent updates.

The system changes the parameter of delay budget updates from a continuous or fixed-interval process to an event-triggered process. By monitoring for specific budget events and only updating delay budgets when such events occur, the system optimizes the balance between placement and routing quality and computational resource consumption. This parameter change approach ensures updates are performed at the right moments without excessive computational overhead.