Placer Directives - 2023.1 English

Vivado Design Suite User Guide: Implementation (UG904)

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2023.1 English

Because placement typically has the greatest impact on overall design performance, the Placer has the most directives of all commands. The following table shows which directives might benefit which types of designs.

Table 1. Directive Guidelines
Directive Designs Benefited
BlockPlacement Designs with many block RAM, DSP blocks, or both
ExtraNetDelay Designs that anticipate many long-distance net connections and nets that fan out to many different modules
SpreadLogic Designs with very high connectivity that tend to create congestion
ExtraPostPlacementOpt All design types
SSI SSI designs that might benefit from different styles of partitioning to relieve congestion or improve timing.