Lower Device Utilization - 2021.2 English

Versal ACAP System Integration and Validation Methodology Guide (UG1388)

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2021.2 English

When several fabric resource utilization percentages are high (on average > 75%), placement becomes more challenging if the netlist complexity is also high (high top-level connectivity, high Rent exponent, high average fanout). High performance designs also come with additional placement challenges. In such situations, revisit the design features and consider removing non-essential modules until only one or two fabric resource utilization percentages are high. If logic reduction is not possible, review the other congestion alleviation techniques presented in this chapter.

Tip: Review resource utilization after opt_design to get more accurate numbers, once unused logic has been trimmed instead of after synthesis.